{"type": "FeatureCollection", "features": [{"id": "10.1016/j.scitotenv.2018.11.010", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:15:59Z", "type": "Journal Article", "created": "2018-11-03", "title": "\u03b415N of lichens reflects the isotopic signature of ammonia source", "description": "Although it is generally accepted that \u03b415N in lichen reflects predominating N isotope sources in the environment, confirmation of the direct correlation between lichen \u03b415N and atmospheric \u03b415N is still missing, especially under field conditions with most confounding factors controlled. To fill this gap and investigate the response of lichens with different tolerance to atmospheric N deposition, thalli of the sensitive Evernia prunastri and the tolerant Xanthoria parietina were exposed for ten weeks to different forms and doses of N in a field manipulation experiment where confounding factors were minimized. During this period, several parameters, namely total N, \u03b415N and chlorophyll a fluorescence, were measured. Under the experimental conditions, \u03b415N in lichens quantitatively responded to the \u03b415N of released gaseous ammonia (NH3). Although a high correlation between the isotopic signatures in lichen tissue and supplied N was found both in tolerant and sensitive species, chlorophyll a fluorescence indicated that the sensitive species very soon lost its photosynthetic functionality with increasing N availability. The most damaging response to the different N chemical forms was observed with dry deposition of NH3, although wet deposition of ammonium ions had a significant observable physiological impact. Conversely, there was no significant effect of nitrate ions on chlorophyll a fluorescence, implying differential sensitivity to dry deposition versus wet deposition and to ammonium versus nitrate in wet deposition. Evernia prunastri was most sensitive to NH3, then NH4+, with lowest sensitivity to NO3-. Moreover, these results confirm that lichen \u03b415N can be used to indicate the \u03b415N of atmospheric ammonia, providing a suitable tool for the interpretation of the spatial distribution of NH3 sources in relation to their \u03b415N signal.", "keywords": ["Air Pollutants", "Nitrates", "Lichens", "Nitrogen Isotopes", "Chlorophyll A", "0211 other engineering and technologies", "02 engineering and technology", "Models", " Theoretical", "chlorophyll a fluorescence", "01 natural sciences", "nitrogen deposition", "Xanthoria parietina", "Species Specificity", "Ammonia", "13. Climate action", "source spatial distribution", "biomonitoring", "physiological response", "Photosynthesis", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2018.11.010"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2018.11.010", "name": "item", "description": "10.1016/j.scitotenv.2018.11.010", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2018.11.010"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2024.125307", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:15:32Z", "type": "Journal Article", "created": "2024-11-12", "title": "Biodegradable microplastics induce profound changes in lettuce (Lactuca sativa) defense mechanisms and to some extent deteriorate growth traits", "description": "The development of agricultural technologies has intensified the use of plastic in this sector. Products of plastic degradation, such as microplastics (MPs), potentially threaten living organisms, biodiversity and agricultural ecosystem functioning. Thus, biodegradable plastic materials have been introduced to agriculture. However, the effects of biodegradable plastic substitutes on soil ecosystems are even less known than those of traditional ones. Here, we studied the effects of environmentally relevant concentrations of MPs prepared from a biodegradable plastic (a starch-polybutylene adipate terephthalate blend, PBAT-BD-MPs) on the growth and defense mechanisms of lettuce (Lactuca sativa) in CLIMECS system (CLImatic Manipulation of ECosystem Samples). PBAT-BD-MPs in the highest concentrations negatively affected some traits of growth, i.e., dry weight percentage, specific leaf area, and both C and N contents. We observed more profound changes in plant physiology and biochemistry, as PBAT-BD-MPs decreased chlorophyll content and triggered a concerted response of plant defense mechanisms against oxidative stress. In conclusion, exposure to PBAT-BD-MPs induced plant oxidative stress and activated plant defense mechanisms, leading to oxidative homeostasis that sustained plant growth and functioning. Our study highlights the need for in-depth understanding of the effect of bioplastics on plants.", "keywords": ["580", "Chlorophyll", "0301 basic medicine", "570", "0303 health sciences", "salicylic acid", "Microplastics", "Lipid peroxidation", "lipid peroxidation", "Salicylic acid", "Biodegradable Plastics", "Plant Leaves", "Oxidative Stress", "03 medical and health sciences", "Starch-polybutylene adipate terephthalate", "Biodegradation", " Environmental", "total phenolic content", "starch-polybutylene adipate terephthalate", "Soil Pollutants", "PBAT", "Total phenolic content", "CLIMECS system", "Lactuca"], "contacts": [{"organization": "Sylwia Adamczyk, Laura J. Zantis, Sam van Loon, Cornelis A.M. van Gestel, Thijs Bosker, Rachel Hurley, Luca Nizzetto, Bartosz Adamczyk, Sannakajsa Velmala,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2024.125307"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2024.125307", "name": "item", "description": "10.1016/j.envpol.2024.125307", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2024.125307"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-12-01T00:00:00Z"}}, {"id": "10.1002/jsfa.5647", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:14:17Z", "type": "Journal Article", "created": "2012-03-19", "title": "Influence Of Rootstock On Drought Response In Young \u2018Gale Gala\u2019 Apple (Malus Domestica Borkh.) Trees", "description": "Abstract<p>BACKGROUND: Drought is a major environmental stress limiting plant growth, productivity, and survival worldwide. Rootstocks are widely used to enhance plants resistance to drought stresses. This study determined influence of rootstock on drought responses in 1\uffe2\uff80\uff90year\uffe2\uff80\uff90old \uffe2\uff80\uff98Gale Gala\uffe2\uff80\uff99 apple trees grafted onto Malus sieversii or M. hupehensis.</p><p>RESULTS: Choice of rootstock resulted in differential response to drought stress. Specifically, M. sieversii caused less drought\uffe2\uff80\uff90induced reduction in relative growth rate, biomass accumulation, leaf area, leaf chlorophyll content, relative water content, photosynthesis rate and maximum chlorophyll fluorescence yield but greater increase in whole\uffe2\uff80\uff90plant water use efficiency compared to M. hupehensis. Secondly, compared with M. hupehensis, M. sieversii caused less drought\uffe2\uff80\uff90induced accumulation of reactive oxygen species but more increase in activities of antioxidant enzymes. In addition, xylem sap abscisic acid concentration was greater in trees grafted onto M. hupehensis than in those grafted onto M. sieversii under drought stress.</p><p>CONCLUSION: \uffe2\uff80\uff98Gale Gala\uffe2\uff80\uff99 trees' response to drought stress was associated with the rootstock's genotype onto which it was grafted. Trees with M. sieversii as rootstock are more drought resistant than trees with M. hupehensis as rootstock, which suggests that M. sieversii can be widely used as rootstock in arid and semi\uffe2\uff80\uff90arid regions. Copyright \uffc2\uffa9 2012 Society of Chemical Industry</p>", "keywords": ["Chlorophyll", "0301 basic medicine", "Plant Roots", "Antioxidants", "Fluorescence", "Trees", "03 medical and health sciences", "Species Specificity", "Stress", " Physiological", "Xylem", "Biomass", "Photosynthesis", "2. Zero hunger", "0402 animal and dairy science", "Water", "04 agricultural and veterinary sciences", "15. Life on land", "Adaptation", " Physiological", "6. Clean water", "Droughts", "Plant Leaves", "Malus", "0401 agriculture", " forestry", " and fisheries", "0405 other agricultural sciences", "Reactive Oxygen Species", "Abscisic Acid"], "contacts": [{"organization": "Binghua Liu, Fengwang Ma, Dong Liang, Yangjun Zou, Liang Cheng,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1002/jsfa.5647"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20the%20Science%20of%20Food%20and%20Agriculture", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/jsfa.5647", "name": "item", "description": "10.1002/jsfa.5647", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/jsfa.5647"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-03-19T00:00:00Z"}}, {"id": "10.1007/978-3-030-13068-8_80", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:14:21Z", "type": "Report", "created": "2019-09-18", "title": "CO2 Biofixation by Chlamydomonas reinhardtii Using Different CO2 Dosing Strategies", "description": "The CO2 sequestration potential of the green microalga Chlamydomonas reinhardtii was investigated with different CO2 dosing strategies. A gas mixture containing 30% CO2 and 70% N2 was used in these experiments in order to simulate the treatment of flue gases from various industries containing high concentrations of CO2. Alongside the CO2 sequestration, the results suggest that the microalgal biomass was rich in carbohydrates and lipids, and thus suitable to be used for biofuel production.", "keywords": ["Periodic CO2 dosing", "CO2 sequestration", "biochemical profiles", "Periodic CO2 dosing", " CO2 sequestration", " biochemical profiles", " chlorophyll", " Chlamydomonas reinhardtii", "chlorophyll", "7. Clean energy", "Chlamydomonas reinhardtii", "6. Clean water"]}, "links": [{"href": "https://www.iris.unina.it/bitstream/11588/726038/2/Version%20submitted%20for%20IRIS.pdf"}, {"href": "http://link.springer.com/content/pdf/10.1007/978-3-030-13068-8"}, {"href": "http://link.springer.com/content/pdf/10.1007/978-3-030-13068-8_80"}, {"href": "https://doi.org/10.1007/978-3-030-13068-8_80"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/978-3-030-13068-8_80", "name": "item", "description": "10.1007/978-3-030-13068-8_80", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/978-3-030-13068-8_80"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-09-19T00:00:00Z"}}, {"id": "10.1007/s00425-017-2647-2", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:14:33Z", "type": "Journal Article", "created": "2017-01-04", "title": "The cost of surviving nitrogen excess: energy and protein demand in the lichen Cladonia portentosa as revealed by proteomic analysis", "description": "Different nitrogen forms affect different metabolic pathways in lichens. In particular, the most relevant changes in protein expression were observed in the fungal partner, with NO 3- mostly affecting the energetic metabolism and NH 4+ affecting transport and regulation of proteins and the energetic metabolism much more than NO 3- did. Excess deposition of reactive nitrogen is a well-known agent of stress for lichens, but which symbiont is most affected and how, remains a mystery. Using proteomics can expand our understanding of stress effects on lichens. We investigated the effects of different doses and forms of reactive nitrogen, with and without supplementary phosphorus and potassium, on the proteome of the lichen Cladonia portentosa growing in a 'real-world' simulation of nitrogen deposition. Protein expression changed with the nitrogen treatments but mostly in the fungal partner, with NO3- mainly affecting the energetic metabolism and NH4+ also affecting the protein synthesis machinery. The photobiont mainly responded overexpressing proteins involved in energy production. This suggests that in response to nitrogen stress, the photobiont mainly supports the defensive mechanisms initiated by the mycobiont with an increased energy production. Such surplus energy is then used by the cell to maintain functionality in the presence of NO3-, while a futile cycle of protein production can be hypothesized to be induced by NH4+ excess. External supply of potassium and phosphorus influenced differently the responses of particular enzymes, likely reflecting the many processes in which potassium exerts a regulatory function.", "keywords": ["Chlorophyll", "Proteomics", "0301 basic medicine", "570", "mycobiont", "Lichens", "Nitrogen", "Cell Respiration", "Nitrate", "Mass Spectrometry", "Molecular mechanism", "03 medical and health sciences", "nitrate", "Ammonia", "Electrophoresis", " Gel", " Two-Dimensional", "Photosynthesis", "Ammonium", " Molecular mechanism", " Mycobiont", " Nitrate", " Photobiont", " Stress response", "Ammonium; Molecular mechanism; Mycobiont; Nitrate; Photobiont; Stress response; Genetics; Plant Science", "0303 health sciences", "Nitrates", "Stress response", "Chlorophyll A", "stress response", "Mycobiont", "ammonium", "Photobiont", "photobiont", "molecular mechanism", "Energy Metabolism", "Ammonium"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s00425-017-2647-2.pdf"}, {"href": "https://doi.org/10.1007/s00425-017-2647-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Planta", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00425-017-2647-2", "name": "item", "description": "10.1007/s00425-017-2647-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00425-017-2647-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-01-04T00:00:00Z"}}, {"id": "10.1007/s11356-014-3661-6", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:14:56Z", "type": "Journal Article", "created": "2014-10-13", "title": "Effects Of Ambient And Elevated Co2 On Growth, Chlorophyll Fluorescence, Photosynthetic Pigments, Antioxidants, And Secondary Metabolites Of Catharanthus Roseus (L.) G Don. Grown Under Three Different Soil N Levels", "description": "Catharanthus roseus L. plants were grown under ambient (375\u2009\u00b1\u200930 ppm) and elevated (560\u2009\u00b1\u200925 ppm) concentrations of atmospheric CO2 at different rates of N supply (without supplemental N, 0 kg N ha(-1); recommended N, 50 kg N ha(-1); and double recommended N, 100 kg N ha(-1)) in open top chambers under field condition. Elevated CO2 significantly increased photosynthetic pigments, photosynthetic efficiency, and organic carbon content in leaves at recommended (RN) and double recommended N (DRN), while significantly decreased total nitrogen content in without supplemental N (WSN). Activities of superoxide dismutase, catalase, and ascorbate peroxidase were declined, while glutathione reductase, peroxidase, and phenylalanine-ammonia lyase were stimulated under elevated CO2. However, the responses of the above enzymes were modified with different rates of N supply. Elevated CO2 significantly reduced superoxide production rate, hydrogen peroxide, and malondialdehyde contents in RN and DRN. Compared with ambient, total alkaloids content increased maximally at recommended level of N, while total phenolics in WSN under elevated CO2. Elevated CO2 stimulated growth of plants by increasing plant height and numbers of branches and leaves, and the magnitude of increment were maximum in DRN. The study suggests that elevated CO2 has positively affected plants by increasing growth and alkaloids production and reducing the level of oxidative stress. However, the positive effects of elevated CO2 were comparatively lesser in plants grown under limited N availability than in moderate and higher N availability. Furthermore, the excess N supply in DRN has stimulated the growth but not the alkaloids production under elevated CO2.", "keywords": ["Chlorophyll", "2. Zero hunger", "0301 basic medicine", "0303 health sciences", "Catharanthus", "Nitrogen", "Secondary Metabolism", "Hydrogen Peroxide", "Carbon Dioxide", "Plants", "15. Life on land", "Antioxidants", "Fluorescence", "6. Clean water", "3. Good health", "Plant Leaves", "Oxidative Stress", "Soil", "03 medical and health sciences", "Superoxides", "Malondialdehyde", "Photosynthesis"], "contacts": [{"organization": "Madhoolika Agrawal, Aradhana Singh,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s11356-014-3661-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%20and%20Pollution%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11356-014-3661-6", "name": "item", "description": "10.1007/s11356-014-3661-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11356-014-3661-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-10-12T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2006.12.071", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:15:22Z", "type": "Journal Article", "created": "2007-02-21", "title": "The Copper Tolerance Strategies And The Role Of Antioxidative Enzymes In Three Plant Species Grown On Copper Mine", "description": "This study was undertaken to identify the strategies and the status of antioxidant enzyme activities involved in three plant species tolerance against Cu-toxicity in copper mine. The following methods were used for evaluations in three wild type species; Datura stramonium, Malva sylvestris and Chenopodium ambrosioides. The level of chlorophyll and the activities of superoxide dismutase (SOD), glutathione peroxidase (GPX) and catalase (CAT) by spectrometry, malondialdehyde (MDA) and dityrosine by HPLC and the levels of Cu in tissues and soils by atomic absorption spectrometry (AAS). Analysis showed that total and available copper were at toxic levels for plants growing on contaminated soil (zone 1). However, there were not any visual and conspicuous symptoms of Cu toxicity in plant species. Among three species, excess copper was transferred only into the D. stramonium and C. ambrosioides tissues. The C. ambrosioides accumulated Cu in roots and then in leaves, in which the leaves chloroplasts stored Cu around two times of vacuoles. In D. stramonium most of Cu was accumulated in leaves in which the storage rate in vacuoles and chloroplasts were 42% and 8%, respectively. In zone 1, the chlorophyll levels increased significantly in leaves of C. ambrosioides with respect to the same plant growing on uncontaminated soil (zone 2). There was insignificant decrease in chlorophyll content of D. stramonium leaves, collected from zone 1 with respect to zone 2. The D. stramonium and C. ambrosioides in zone 1, both revealed significant increase in their tissues antioxidant enzyme activities in comparison with the same samples of zone 2. There was significant elevation in oxidative damage biomarkers; MDA and dityrosine, when the aerial parts of D. stramonium in zone 1 were compared with the same parts of zone 2. We concluded that there were different tolerance strategies in studied plant species that protected them against copper toxicity. In M. sylvestris, exclusion of Cu from the roots or its stabilization in the soil restricted Cu toxicity effects. On the other hand D. stramonium and C. ambrosioides, elevated their antioxidative enzyme activities in response to cu-toxicity. In addition, the species D. stramonium accumulated excess of Cu in leaves vacuoles.", "keywords": ["Chlorophyll", "0106 biological sciences", "0301 basic medicine", "Chloroplasts", "Malva", "Plants", "15. Life on land", "Lipid Metabolism", "Plant Roots", "01 natural sciences", "Antioxidants", "Mining", "6. Clean water", "Chenopodium", "Oxidative Stress", "Soil", "03 medical and health sciences", "Malondialdehyde", "Vacuoles", "Datura", "Tyrosine", "Biomass", "Copper", "Plant Proteins"], "contacts": [{"organization": "Massod Mashhadi Akbar Boojar, Faranak Goodarzi,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2006.12.071"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2006.12.071", "name": "item", "description": "10.1016/j.chemosphere.2006.12.071", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2006.12.071"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-05-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2004.04.001", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:15:31Z", "type": "Journal Article", "created": "2004-06-12", "title": "Phytoextraction Of Heavy Metals By Canola (Brassica Napus) And Radish (Raphanus Sativus) Grown On Multicontaminated Soil", "description": "Phytoextraction can provide an effective in situ technique for removing heavy metals from polluted soils. The experiment reported in this paper was undertaken to study the basic potential of phytoextraction of Brassica napus (canola) and Raphanus sativus (radish) grown on a multi-metal contaminated soil in the framework of a pot-experiment. Chlorophyll contents and gas exchanges were measured during the experiment; the heavy metal phytoextraction efficiency of canola and radish were also determined and the phytoextraction coefficient for each metal calculated. Data indicated that both species are moderately tolerant to heavy metals and that radish is more so than canola. These species showed relatively low phytoremediation potential of multicontaminated soils. They could possibly be used with success in marginally polluted soils where their growth would not be impaired and the extraction of heavy metals could be maintained at satisfying levels.", "keywords": ["Chlorophyll", "Soil pollution; Heavy metals; Phytoremediation", "Light", "Brassica napus", "Water", "04 agricultural and veterinary sciences", "01 natural sciences", "6. Clean water", "Raphanus", "Metals", " Heavy", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Environmental Pollution", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://air.uniud.it/bitstream/11390/856253/1/Env_Poll_Marchio%20et%20al_2004.pdf"}, {"href": "https://doi.org/10.1016/j.envpol.2004.04.001"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2004.04.001", "name": "item", "description": "10.1016/j.envpol.2004.04.001", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2004.04.001"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-11-01T00:00:00Z"}}, {"id": "10.1038/s41598-017-07305-6", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:16:38Z", "type": "Journal Article", "created": "2017-07-26", "title": "Theoretical isotopic fractionation of magnesium between chlorophylls", "description": "Abstract<p>Magnesium is the metal at the center of all types of chlorophyll and is thus crucial to photosynthesis. When an element is involved in a biosynthetic pathway its isotopes are fractionated based on the difference of vibrational frequency between the different molecules. With the technical advance of multi-collectors plasma-mass-spectrometry and improvement in analytical precision, it has recently been found that two types of chlorophylls (a and b) are isotopically distinct. These results have very significant implications with regards to the use of Mg isotopes to understand the biosynthesis of chlorophyll. Here we present theoretical constraints on the origin of these isotopic fractionations through ab initio calculations. We present the fractionation factor for chlorphyll a, b, d, and f. We show that the natural isotopic variations among chlorophyll a and b are well explained by isotopic fractionation under equilibrium, which implies exchanges of Mg during the chlorophyll cycle. We predict that chlorophyll d and f should be isotopically fractionated compared to chlorophyll a and that this could be used in the future to understand the biosynthesis of these molecules.</p>", "keywords": ["Chlorophyll", "0301 basic medicine", "0303 health sciences", "RELEVANT", "Molecular Structure", "PHOTOSYNTHESIS", "Science", "Q", "POTENTIALS", "R", "Chemical Fractionation", "Fe", "Article", "3. Good health", "[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry", "[CHIM.THEO] Chemical Sciences/Theoretical and/or physical chemistry", "03 medical and health sciences", "Isotopes", "Zn", "Medicine", "PLANTS", "Magnesium", "[SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry", " Molecular Biology/Biochemistry [q-bio.BM]", "GEOCHEMISTRY", "[SDV.BBM.BC] Life Sciences [q-bio]/Biochemistry", " Molecular Biology/Biochemistry [q-bio.BM]"], "contacts": [{"organization": "Fr\u00e9d\u00e9ric Moynier, Fr\u00e9d\u00e9ric Moynier, Toshiyuki Fujii,", "roles": ["creator"]}]}, "links": [{"href": "https://www.nature.com/articles/s41598-017-07305-6.pdf"}, {"href": "https://doi.org/10.1038/s41598-017-07305-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/s41598-017-07305-6", "name": "item", "description": "10.1038/s41598-017-07305-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41598-017-07305-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-08-01T00:00:00Z"}}, {"id": "10.3390/rs11111350", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:18:50Z", "type": "Journal Article", "created": "2019-06-06", "title": "Spectral Response Analysis: An Indirect and Non-Destructive Methodology for the Chlorophyll Quantification of Biocrusts", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Chlorophyll a concentration (Chla) is a well-proven proxy of biocrust development, photosynthetic organisms\u2019 status, and recovery monitoring after environmental disturbances. However, laboratory methods for the analysis of chlorophyll require destructive sampling and are expensive and time consuming. Indirect estimation of chlorophyll a by means of soil surface reflectance analysis has been demonstrated to be an accurate, cheap, and quick alternative for chlorophyll retrieval information, especially in plants. However, its application to biocrusts has yet to be harnessed. In this study we evaluated the potential of soil surface reflectance measurements for non-destructive Chla quantification over a range of biocrust types and soils. Our results revealed that from the different spectral transformation methods and techniques, the first derivative of the reflectance and the continuum removal were the most accurate for Chla retrieval. Normalized difference values in the red-edge region and common broadband indexes (e.g., normalized difference vegetation index (NDVI)) were also sensitive to changes in Chla. However, such approaches should be carefully adapted to each specific biocrust type. On the other hand, the combination of spectral measurements with non-linear random forest (RF) models provided very good fits (R2 &gt; 0.94) with a mean root mean square error (RMSE) of about 6.5 \u00b5g/g soil, and alleviated the need for a specific calibration for each crust type, opening a wide range of opportunities to advance our knowledge of biocrust responses to ongoing global change and degradation processes from anthropogenic disturbance.</p></article>", "keywords": ["chlorophyll quantification", "remote sensing", "hyperspectral", "13. Climate action", "Science", "Q", "Biocrusts; biological soil crust; chlorophyll quantification; hyperspectral; random forest; remote sensing", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "random forest", "Biocrusts", "biological soil crust"]}, "links": [{"href": "http://www.mdpi.com/2072-4292/11/11/1350/pdf"}, {"href": "https://www.mdpi.com/2072-4292/11/11/1350/pdf"}, {"href": "https://doi.org/10.3390/rs11111350"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Remote%20Sensing", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/rs11111350", "name": "item", "description": "10.3390/rs11111350", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/rs11111350"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-05T00:00:00Z"}}, {"id": "10.1093/treephys/tpaa058", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:17:04Z", "type": "Journal Article", "created": "2020-04-24", "title": "Timeline of autumn phenology in temperate deciduous trees", "description": "Abstract                <p>Cessation of xylem formation or wood growth (CWG) and onset of foliar senescence (OFS) are key autumn phenological events in temperate deciduous trees. Their timing is fundamental for the development and survival of trees, ecosystem nutrient cycling and the seasonal exchange of matter and energy between the biosphere and atmosphere, and affects the impact and feedback of forests to global change. A large-scale experimental effort and improved observational methods have allowed us to compare the timing of CWG and OFS for different deciduous tree species in Western Europe, particularly in silver birch, a pioneer species, and European beech, a late-succession species, at stands of different latitudes, of different levels of site fertility, for 2 years with contrasting meteorological and drought conditions, i.e., the low moderately dry 2017 and the extremely dry 2018. Specifically, we tested whether foliar senescence started before, after or concurrently with CWG. Onset of foliar senescence and CWG occurred generally between late September and early November, with larger differences across species and sites for OFS. Foliar senescence started concurrently with CWG in most cases, except for the drier 2018 and, for beech, at the coldest site, where OFS occurred significantly later than CWG. The behavior of beech in Spain, the southern edge of its European distribution, was unclear, with no CWG, but very low wood growth at the time of OFS. Our study suggests that OFS is generally triggered by the same drivers of CWG or when wood growth decreases in late summer, indicating an overarching mechanism of sink limitation as a possible regulator of the timing of foliar senescence.</p>", "keywords": ["0106 biological sciences", "listna senescenca", "nastajanje lesa", "cambium", "info:eu-repo/classification/udc/630*18:630*8", "autumn phenology", " xylem formation", " foliar senescence", " cambium", " chlorophyll", " radial growth", " wood", " decidiuous trees", " common aspen", " common beech", " pedunculate oak", " silver birch", "01 natural sciences", "jesenska fenologija", " nastajanje lesa", " listna senescenca", " kambij", " klorofil", " debelinska rast", " les", " listavci", " trepetlika", " navadna bukev", " dob", " navadna breza", "trepetlika", "Trees", "navadna bukev", "klorofil", "les", "chlorophyll", "pedunculate oak", "Biology", "info:eu-repo/classification/udc/630*1", "Ecosystem", "xylem formation", "kambij", "silver birch", "Temperature", "sink limitation", "04 agricultural and veterinary sciences", "dob", "navadna breza", "15. Life on land", "debelinska rast", "common beech", "listavci", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "Europe", "Plant Leaves", "radial growth", "jesenska fenologija", "common aspen", "Spain", "13. Climate action", "foliar senescence", "wood growth", "0401 agriculture", " forestry", " and fisheries", "Seasons", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "autumn phenology", "decidiuous trees", "wood"]}, "links": [{"href": "https://doi.org/10.1093/treephys/tpaa058"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Tree%20Physiology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1093/treephys/tpaa058", "name": "item", "description": "10.1093/treephys/tpaa058", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1093/treephys/tpaa058"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-04-27T00:00:00Z"}}, {"id": "10.1098/rstb.2012.0102", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:17:06Z", "type": "Journal Article", "created": "2012-10-08", "title": "Impact Of Grazing Intensity On Seasonal Variations In Soil Organic Carbon And Soil Co2 Efflux In Two Semiarid Grasslands In Southern Botswana", "description": "<p>             Biological soil crusts (BSCs) are an important source of organic carbon, and affect a range of ecosystem functions in arid and semiarid environments. Yet the impact of grazing disturbance on crust properties and soil CO             2             efflux remain poorly studied, particularly in African ecosystems. The effects of burial under wind-blown sand, disaggregation and removal of BSCs on seasonal variations in soil CO             2             efflux, soil organic carbon, chlorophyll             a             and scytonemin were investigated at two sites in the Kalahari of southern Botswana. Field experiments were employed to isolate CO             2             efflux originating from BSCs in order to estimate the C exchange within the crust. Organic carbon was not evenly distributed through the soil profile but concentrated in the BSC. Soil CO             2             efflux was higher in Kalahari Sand than in calcrete soils, but rates varied significantly with seasonal changes in moisture and temperature. BSCs at both sites were a small net sink of C to the soil. Soil CO             2             efflux was significantly higher in sand soils where the BSC was removed, and on calcrete where the BSC was buried under sand. The BSC removal and burial under sand also significantly reduced chlorophyll             a             , organic carbon and scytonemin             .             Disaggregation of the soil crust, however, led to increases in chlorophyll             a             and organic carbon. The data confirm the importance of BSCs for C cycling in drylands and indicate intensive grazing, which destroys BSCs through trampling and burial, will adversely affect C sequestration and storage. Managed grazing, where soil surfaces are only lightly disturbed, would help maintain a positive carbon balance in African drylands.           </p>", "keywords": ["Chlorophyll", "2. Zero hunger", "Conservation of Natural Resources", "Botswana", "Indoles", "Chlorophyll A", "Temperature", "Water", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Poaceae", "Carbon", "Fires", "Carbon Cycle", "Soil", "Phenols", "13. Climate action", "Animals", "0401 agriculture", " forestry", " and fisheries", "Herbivory", "Seasons", "Desert Climate", "Ecosystem", "Soil Microbiology"], "contacts": [{"organization": "Andrew D. Thomas", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1098/rstb.2012.0102"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Philosophical%20Transactions%20of%20the%20Royal%20Society%20B%3A%20Biological%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1098/rstb.2012.0102", "name": "item", "description": "10.1098/rstb.2012.0102", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1098/rstb.2012.0102"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-11-19T00:00:00Z"}}, {"id": "10.1098/rstb.2017.0302", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:17:06Z", "type": "Journal Article", "created": "2018-10-08", "title": "Tropical land carbon cycle responses to 2015/16 El Ni\u00f1o as recorded by atmospheric greenhouse gas and remote sensing data", "description": "<p>             The outstanding tropical land climate characteristic over the past decades is rapid warming, with no significant large-scale precipitation trends. This warming is expected to continue but the effects on tropical vegetation are unknown. El Ni\uffc3\uffb1o-related heat peaks may provide a test bed for a future hotter world. Here we analyse tropical land carbon cycle responses to the 2015/16 El Ni\uffc3\uffb1o heat and drought anomalies using an atmospheric transport inversion. Based on the global atmospheric CO             2             and fossil fuel emission records, we find no obvious signs of anomalously large carbon release compared with earlier El Ni\uffc3\uffb1o events, suggesting resilience of tropical vegetation. We find roughly equal net carbon release anomalies from Amazonia and tropical Africa, approximately 0.5 PgC each, and smaller carbon release anomalies from tropical East Asia and southern Africa. Atmospheric CO anomalies reveal substantial fire carbon release from tropical East Asia peaking in October 2015 while fires contribute only a minor amount to the Amazonian carbon flux anomaly. Anomalously large Amazonian carbon flux release is consistent with downregulation of primary productivity during peak negative near-surface water anomaly (October 2015 to March 2016) as diagnosed by solar-induced fluorescence. Finally, we find an unexpected anomalous positive flux to the atmosphere from tropical Africa early in 2016, coincident with substantial CO release.           </p>           <p>This article is part of a discussion meeting issue \uffe2\uff80\uff98The impact of the 2015/2016 El Ni\uffc3\uffb1o on the terrestrial tropical carbon cycle: patterns, mechanisms and implications\uffe2\uff80\uff99.</p>", "keywords": ["Life Sciences & Biomedicine - Other Topics", "FLUX", "0301 basic medicine", "Hot Temperature", "550", "551", "global warming", "01 natural sciences", "Carbon Cycle", "Greenhouse Gases", "03 medical and health sciences", "[SDU.STU.CL] Sciences of the Universe [physics]/Earth Sciences/Climatology", "CHEMICAL-TRANSPORT MODEL", "carbon cycle", "INVERSION", "Biology", "TEMPERATURE", "11 Medical and Health Sciences", "0105 earth and related environmental sciences", "tropical forests", "El Nino-Southern Oscillation", "Evolutionary Biology", "Tropical Climate", "Science & Technology", "Atmosphere", "PHOTOSYNTHESIS", "EQUATORIAL PACIFIC", "Articles", "06 Biological Sciences", "15. Life on land", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "6. Clean water", "Droughts", "[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology", "13. Climate action", "PRECIPITATION", "Remote Sensing Technology", "INDUCED CHLOROPHYLL FLUORESCENCE", "CO2", "[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces", "SENSITIVITY", "environment", "Life Sciences & Biomedicine", "fire"]}, "links": [{"href": "https://eprints.whiterose.ac.uk/135234/8/Tropical%20land%20carbon%20cycle%20responses%20to%202015/16%20El%20Ni%C3%B1o%20as%20recorded%20by%20atmospheric%20greenhouse%20gas%20and%20remote%20sensing%20data.pdf"}, {"href": "https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.2017.0302"}, {"href": "https://doi.org/10.1098/rstb.2017.0302"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Philosophical%20Transactions%20of%20the%20Royal%20Society%20B%3A%20Biological%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1098/rstb.2017.0302", "name": "item", "description": "10.1098/rstb.2017.0302", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1098/rstb.2017.0302"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-10-08T00:00:00Z"}}, {"id": "10.1098/rstb.2017.0408", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:17:07Z", "type": "Journal Article", "created": "2018-10-08", "title": "Widespread reduction in sun-induced fluorescence from the Amazon during the 2015/2016 El Ni\u00f1o", "description": "<p>             The tropical carbon balance dominates year-to-year variations in the CO             2             exchange with the atmosphere through photosynthesis, respiration and fires. Because of its high correlation with gross primary productivity (GPP), observations of sun-induced fluorescence (SIF) are of great interest. We developed a new remotely sensed SIF product with improved signal-to-noise in the tropics, and use it here to quantify the impact of the 2015/2016 El Ni\uffc3\uffb1o\uffc2\uffa0Amazon drought. We find that SIF was strongly suppressed over areas with anomalously high temperatures and decreased levels of water in the soil. SIF went below its climatological range starting from the end of the 2015 dry season (October) and returned to normal levels by February 2016 when atmospheric conditions returned to normal, but well before the end of anomalously low precipitation that persisted through June 2016. Impacts were not uniform across the Amazon basin, with the eastern part experiencing much larger (10\uffe2\uff80\uff9315%) SIF reductions than the western part of the basin (2\uffe2\uff80\uff935%). We estimate the integrated loss of GPP relative to eight previous years to be 0.34\uffe2\uff80\uff930.48 PgC in the three-month period October\uffe2\uff80\uff93November\uffe2\uff80\uff93December 2015.           </p>           <p>This article is part of a discussion meeting issue \uffe2\uff80\uff98The impact of the 2015/2016 El Ni\uffc3\uffb1o on the terrestrial tropical carbon cycle: patterns, mechanisms and implications\uffe2\uff80\uff99.</p>", "keywords": ["0301 basic medicine", "FLUXES", "El Ni\u00f1o-Southern Oscillation", "Amazon rainforest", "sun-induced fluorescence", "El Ni\u00f1o Southern Oscillation", "drought response", "Forests", "SOUTHERN-OSCILLATION", "01 natural sciences", "Fluorescence", "Trees", "SCIAMACHY", "03 medical and health sciences", "GOME-2", "ATMOSPHERIC CARBON-DIOXIDE", "SATELLITE", "0105 earth and related environmental sciences", "El Nino-Southern Oscillation", "Amazone rainforest", "Articles", "15. Life on land", "tropical terrestrial carbon cycle", "gross primary production", "TERRESTRIAL CHLOROPHYLL FLUORESCENCE", "SIMULATIONS", "6. Clean water", "Droughts", "CLIMATE", "13. Climate action", "BALANCE", "Remote Sensing Technology", "Sunlight", "Brazil"]}, "links": [{"href": "https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.2017.0408"}, {"href": "https://doi.org/10.1098/rstb.2017.0408"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Philosophical%20Transactions%20of%20the%20Royal%20Society%20B%3A%20Biological%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1098/rstb.2017.0408", "name": "item", "description": "10.1098/rstb.2017.0408", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1098/rstb.2017.0408"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-10-08T00:00:00Z"}}, {"id": "10.1111/j.1365-3040.2004.01231.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:17:25Z", "type": "Journal Article", "created": "2004-10-06", "title": "Functional Diversity Of Photosynthesis During Drought In A Model Tropical Rainforest - The Contributions Of Leaf Area, Photosynthetic Electron Transport And Stomatal Conductance To Reduction In Net Ecosystem Carbon Exchange", "description": "ABSTRACT<p>The tropical rainforest mesocosm within the Biosphere 2 Laboratory, a model system of some 110 species developed over 12\uffe2\uff80\uff83years under controlled environmental conditions, has been subjected to a series of comparable drought experiments during 2000\uffe2\uff80\uff932002. In each study, the mesocosm was subjected to a 4\uffe2\uff80\uff936 week drought, with well\uffe2\uff80\uff90defined rainfall events before and after the treatment. Ecosystem CO2 uptake rate (Aeco) declined 32% in response to the drought, with changes occurring within days and being reversible within weeks, even though the deeper soil layers did not become significantly drier and leaf\uffe2\uff80\uff90level water status of most large trees was not greatly affected. The reduced Aeco during the drought reflected both morphological and physiological responses. It is estimated that the drought\uffe2\uff80\uff90induced 32% reduction of Aeco has three principal components: (1) leaf fall increased two\uffe2\uff80\uff90fold whereas leaf expansion growth of some canopy dominants declined to 60%, leading to a 10% decrease in foliage coverage of the canopy. This might be the main reason for the persistent reduction of Aeco after rewatering. (2) The maximum photosynthetic electron transport rate at high light intensities in remaining leaves was reduced to 71% for three of the four species measured, even though no chronic photo\uffe2\uff80\uff90inhibition occurred. (3) Stomata closed, leading to a reduced ecosystem water conductance to water vapour (33% of pre\uffe2\uff80\uff90drought values), which not only reduced ecosystem carbon uptake rate, but may also have implications for water and energy budgets of tropical ecosystems. Additionally, individual rainforest trees responded differently, expressing different levels of stress and stress avoiding mechanisms. This functional diversity renders the individual response heterogeneous and has fundamental implications to scale leaf level responses to ecosystem dynamics.</p>", "keywords": ["580", "0301 basic medicine", "leaf area", "net ecosystem CO(2) exchange", "photosynthesis", "CLIMATE-CHANGE", "chlorophyll fluorescence", "CANOPY TREE", "drought", "15. Life on land", "6. Clean water", "FRENCH-GUIANA", "03 medical and health sciences", "leaf fall", "tropical trees KeyWords Plus: ATMOSPHERIC CO2 CONCENTRATIONS", "PHOTOSYSTEM-II", "XANTHOPHYLL CYCLE", "WATER-VAPOR", "L LEAVES", "13. Climate action", "leaf growth", "tropical rainforest", "photosynthetic electron transport", "GAS-EXCHANGE"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-3040.2004.01231.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%2C%20Cell%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-3040.2004.01231.x", "name": "item", "description": "10.1111/j.1365-3040.2004.01231.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-3040.2004.01231.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-10-01T00:00:00Z"}}, {"id": "10.1111/j.1438-8677.2012.00627.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:17:25Z", "type": "Journal Article", "created": "2012-06-05", "title": "Physiological And Biochemical Responses Ofquercus Pubescensto Air Warming And Drought On Acidic And Calcareous Soils", "description": "Abstract<p>The drought\uffe2\uff80\uff90 and thermo\uffe2\uff80\uff90tolerant Quercus pubescens, a tree species growing on both acidic and calcareous soils in the sub\uffe2\uff80\uff90Mediterranean region, was exposed to soil drought (\uffe2\uff88\uff9260% to \uffe2\uff88\uff9280% soil water content) and air warming (+1.2\uffe2\uff80\uff83\uffc2\uffb0C daytime temperature), singly and in combination. The experiment was conducted on two natural forest soils with similar texture but different pH (acidic and calcareous soils). The physiological (photosynthesis) and biochemical (antioxidant system) responses of Q.\uffc2\uffa0pubescens were investigated. On acidic soil, Q.\uffc2\uffa0pubescens had a higher reactive oxygen species (ROS) content than on calcareous soil, confirming that this species is better adapted to the latter soil type. A down\uffe2\uff80\uff90regulation of ascorbate\uffe2\uff80\uff90glutathione cycle enzymes suggests that ROS were used as signalling molecules. Air warming stimulated stomatal opening, while soil drought induced stomatal closure in the late afternoon and reduced Rubisco carboxylation efficiency. Photosynthetic performance in the combined treatment was higher than under single drought stress and similar to control and air warming. Q.\uffc2\uffa0pubescens biochemical responses depended on soil pH. On acidic soil, Q.\uffc2\uffa0pubescens trees exposed to air warming used ROS as signalling molecules. On calcareous soil, these trees were able to balance both soil drought and air warming stress, avoiding ROS toxic effects by increasing antioxidant enzyme activitiy and maintaining a high enzymatic antioxidant defence. When combined, drought and air warming induced either more severe (higher oxidative pressure and impairment of the light\uffe2\uff80\uff90harvesting complex) or different responses (decline of the thermal energy dissipation capacity) relative to the single stressors. Overall, however, Q.\uffc2\uffa0pubescens preserved the functionality of the photosynthetic apparatus and controlled the antioxidant system response, thus confirming its drought and thermo\uffe2\uff80\uff90tolerance and therefore its potential to adapt to the ongoing climate change.</p>", "keywords": ["0106 biological sciences", "0301 basic medicine", "Hot Temperature", "Climate", "Ribulose-Bisphosphate Carboxylase", "Light-Harvesting Protein Complexes", "Down-Regulation", "Global Warming", "01 natural sciences", "Antioxidants", "Quercus", "Soil", "03 medical and health sciences", "Antioxidant enzyme; ascorbate-glutathione cycle; chlorophyll a fluorescence; gas exchange; oak", "Stress", " Physiological", "Photosynthesis", "Ecosystem", "Antioxidant enzyme; ascorbate-glutathione cycle; chlorophyll a fluorescence; gas exchange; oak.", "Air", "Water", "15. Life on land", "Hydrogen-Ion Concentration", "Adaptation", " Physiological", "6. Clean water", "Droughts", "Oxidative Stress", "13. Climate action", "Plant Stomata"]}, "links": [{"href": "https://doi.org/10.1111/j.1438-8677.2012.00627.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1438-8677.2012.00627.x", "name": "item", "description": "10.1111/j.1438-8677.2012.00627.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1438-8677.2012.00627.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-06-05T00:00:00Z"}}, {"id": "10.3390/rs11040413", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:18:50Z", "type": "Journal Article", "created": "2019-02-19", "title": "Exploring the Potential of Satellite Solar-Induced Fluorescence to Constrain Global Transpiration Estimates", "description": "<p>The opening and closing of plant stomata regulates the global water, carbon and energy cycles. Biophysical feedbacks on climate are highly dependent on transpiration, which is mediated by vegetation phenology and plant responses to stress conditions. Here, we explore the potential of satellite observations of solar-induced chlorophyll fluorescence (SIF)\uffe2\uff80\uff94normalized by photosynthetically-active radiation (PAR)\uffe2\uff80\uff94to diagnose the ratio of transpiration to potential evaporation (\uffe2\uff80\uff98transpiration efficiency\uffe2\uff80\uff99, \uffcf\uff84). This potential is validated at 25 eddy-covariance sites from seven biomes worldwide. The skill of the state-of-the-art land surface models (LSMs) from the eartH2Observe project to estimate \uffcf\uff84 is also contrasted against eddy-covariance data. Despite its relatively coarse (0.5\uffc2\uffb0) resolution, SIF/PAR estimates, based on data from the Global Ozone Monitoring Experiment 2 (GOME-2) and the Clouds and Earth\uffe2\uff80\uff99s Radiant Energy System (CERES), correlate to the in situ \uffcf\uff84 significantly (average inter-site correlation of 0.59), with higher correlations during growing seasons (0.64) compared to decaying periods (0.53). In addition, the skill to diagnose the variability of in situ \uffcf\uff84 demonstrated by all LSMs is on average lower, indicating the potential of SIF data to constrain the formulations of transpiration in global models via, e.g., data assimilation. Overall, SIF/PAR estimates successfully capture the effect of phenological changes and environmental stress on natural ecosystem transpiration, adequately reflecting the timing of this variability without complex parameterizations.</p>", "keywords": ["VEGETATION DYNAMICS", "Science", "STOMATAL CONDUCTANCE", "0207 environmental engineering", "solar-induced chlorophyll fluorescence", "02 engineering and technology", "01 natural sciences", "transpiration", "CARBON", "GOME-2", "WATER", "PLANT", "0105 earth and related environmental sciences", "EVAPOTRANSPIRATION", "Q", "Biology and Life Sciences", "15. Life on land", "MODEL", "EVAPORATION", "SOIL", "PARTITIONING", "transpiration efficiency", "efficiency", "13. Climate action", "Earth and Environmental Sciences", "INDUCED CHLOROPHYLL FLUORESCENCE", "solar-induced chlorophyll fluorescence; transpiration; transpiration efficiency; GOME-2; eddy-covariance", "eddy-covariance"]}, "links": [{"href": "http://www.mdpi.com/2072-4292/11/4/413/pdf"}, {"href": "https://doi.org/10.3390/rs11040413"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Remote%20Sensing", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/rs11040413", "name": "item", "description": "10.3390/rs11040413", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/rs11040413"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-18T00:00:00Z"}}, {"id": "10.1371%2fjournal.pone.0044697", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:17:46Z", "type": "Journal Article", "created": "2012-09-11", "title": "A Novel Stress-Induced Sugarcane Gene Confers Tolerance To Drought, Salt And Oxidative Stress In Transgenic Tobacco Plants", "description": "Drought is a major abiotic stress that affects crop productivity worldwide. Sugarcane can withstand periods of water scarcity during the final stage of culm maturation, during which sucrose accumulation occurs. Meanwhile, prolonged periods of drought can cause severe plant losses.In a previous study, we evaluated the transcriptome of drought-stressed plants to better understand sugarcane responses to drought. Among the up-regulated genes was Scdr1 (sugarcane drought-responsive 1). The aim of the research reported here was to characterize this gene. Scdr1 encodes a putative protein containing 248 amino acids with a large number of proline (19%) and cysteine (13%) residues. Phylogenetic analysis showed that ScDR1is in a clade with homologs from other monocotyledonous plants, separate from those of dicotyledonous plants. The expression of Scdr1 in different varieties of sugarcane plants has not shown a clear association with drought tolerance.The overexpression of Scdr1 in transgenic tobacco plants increased their tolerance to drought, salinity and oxidative stress, as demonstrated by increased photosynthesis, water content, biomass, germination rate, chlorophyll content and reduced accumulation of ROS. Physiological parameters, such as transpiration rate (E), net photosynthesis (A), stomatal conductance (gs) and internal leaf CO(2) concentration, were less affected by abiotic stresses in transgenic Scdr1 plants compared with wild-type plants. Overall, our results indicated that Scdr1 conferred tolerance to multiple abiotic stresses, highlighting the potential of this gene for biotechnological applications.", "keywords": ["Chlorophyll", "Nicotiana", "0301 basic medicine", "Sucrose", "Science", "Molecular Sequence Data", "03 medical and health sciences", "Amino Acid Sequence", "Biomass", "Transgenes", "Photosynthesis", "Phylogeny", "Plant Proteins", "2. Zero hunger", "0303 health sciences", "Base Sequence", "Sequence Homology", " Amino Acid", "Q", "R", "Water", "15. Life on land", "Plants", " Genetically Modified", "6. Clean water", "Droughts", "Saccharum", "Oxidative Stress", "Medicine", "Salts", "Reactive Oxygen Species", "Research Article", "Biotechnology"]}, "links": [{"href": "https://doi.org/10.1371%2fjournal.pone.0044697"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/PLoS%20ONE", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1371%2fjournal.pone.0044697", "name": "item", "description": "10.1371%2fjournal.pone.0044697", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1371%2fjournal.pone.0044697"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-09-11T00:00:00Z"}}, {"id": "10.12666/Novenyterm.63.2014.Suppl", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-19T16:17:43Z", "type": "Report", "created": "2015-04-08", "title": "Variable rate application of fertilizers based on the Mehlich 3 methodology", "description": "The main goal of our research was to investigate some physiological parameters of barley genotypes under optimal and a quarter amount of nitrogen contents. Nitrogen fertilization even is a powerful tool in increasing grain yield in cereals. Agrarians have to optimize the application of nitrogen fertilizers to avoid pollution by nitrates parallel with preserving their economic margin. The price of nitrogen fertilizer is getting continuously growing. Hence, the supply of nitrogen is crucial for plant growth and development. The role of nitrogen in plant production is closely connected with photosynthesis. The main participators of photosynthesis are contains large amount of nitrogen, such as rubisco and chlorophylls. Several researches focused on investigating mainly the intensity and products of dark reaction of the photosynthetic pathway, but we no have sufficient information about light reaction affected by genotypic and nitrogen supply variations. Chlorophyll fluorescence induction method was used to examine potential photochemical activity (Fv/Fm) and other parameters of fast and slow phase of chlorophyll fluorescence induction curve. During our experiments relative chlorophyll content measurement was applied to follow the total chlorophyll contents of genotypes. The measured parameters help choosing efficient barley genotypes of the double-haploid population to breed more productive barley lines under lower but sufficient nitrogen supply.", "keywords": ["chlorophyll fluorescence", "nitrogen", " barley", " chlorophyll", " chlorophyll fluorescence", "0401 agriculture", " forestry", " and fisheries", "Agr\u00e1rtudom\u00e1nyok", "barley", "N\u00f6v\u00e9nytermeszt\u00e9si \u00e9s kert\u00e9szeti tudom\u00e1nyok", "chlorophyll", "04 agricultural and veterinary sciences", "nitrogen"], "contacts": [{"organization": "Juh\u00e1sz, Csaba, Sz\u0151ll\u0151si, Nikolett, M\u00e9zes, Lili, Petis, Mih\u00e1ly, Tam\u00e1s, J\u00e1nos,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.12666/Novenyterm.63.2014.Suppl"}, {"rel": "self", "type": "application/geo+json", "title": "10.12666/Novenyterm.63.2014.Suppl", "name": "item", "description": "10.12666/Novenyterm.63.2014.Suppl", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.12666/Novenyterm.63.2014.Suppl"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-04-08T00:00:00Z"}}, {"id": "10.5194/amt-13-4295-2020", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:19:14Z", "type": "Journal Article", "created": "2020-01-22", "title": "Improved SIFTER v2 algorithm for long-term GOME-2A satellite retrievals of fluorescence with a correction for instrument degradation", "description": "<p>Abstract. Solar-induced fluorescence (SIF) data from satellites are increasingly used as a proxy for photosynthetic activity by vegetation, and as a constraint on gross primary production. Here we develop an improved retrieval algorithm to retrieve mid-morning (09:30 hrs local time) SIF estimates on the global scale from GOME-2 sensor on the Metop-A satellite (GOME-2A) for the period 2007\uffe2\uff80\uff932019. Our new SIFTER v2 algorithm improves over a previous version by using a narrower spectral window that avoids strong oxygen absorption and is less sensitive to water vapour absorption, by constructing stable reference spectra from a 6-year period (2007\uffe2\uff80\uff932012) of atmospheric spectra over the Sahara, and by applying a latitude-dependent zero-level adjustment that accounts for biases in the data product. We generated stable, good-quality SIF retrievals between January 2007 and June 2013, when GOME-2A degradation in the near infrared was still limited. After the narrowing of the GOME-2A swath in July 2013, we characterized the throughput degradation of the level-1 data in order to derive reflectance corrections and apply these for the SIF retrievals between July 2013 and December 2018. SIFTER v2 data compares well with the independent NASA v2.8 data product. Especially in the evergreen tropics, SIFTER v2 no longer shows the underestimates against other satellite products that were seen in SIFTER v1. The new data product includes uncertainty estimates for individual observations, and is best used for mostly clear-sky scenes, and when spectral residuals remain below a certain spectral autocorrelation threshold. Our results support the use of SIFTER v2 data to be used as an independent constraint on photosynthetic activity on regional to global scales.                         </p>", "keywords": ["PHOTOSYNTHESIS", "TA715-787", "Environmental engineering", "04 agricultural and veterinary sciences", "TA170-171", "15. Life on land", "01 natural sciences", "TERRESTRIAL CHLOROPHYLL FLUORESCENCE", "SIMULATIONS", "Earthwork. Foundations", "13. Climate action", "Life Science", "0401 agriculture", " forestry", " and fisheries", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://amt.copernicus.org/articles/13/4295/2020/amt-13-4295-2020.pdf"}, {"href": "https://doi.org/10.5194/amt-13-4295-2020"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Atmospheric%20Measurement%20Techniques", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5194/amt-13-4295-2020", "name": "item", "description": "10.5194/amt-13-4295-2020", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/amt-13-4295-2020"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-01-22T00:00:00Z"}}, {"id": "10.1594/pangaea.194648", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:17:59Z", "type": "Dataset", "title": "Physical oceanography at station JCR2_CTD24", "description": "Plymouth Marine Laboratory. Authorship was originally 'BODC' and was changed by request of the BODC.", "keywords": ["Salinity", "potential", "Density", " sigma-theta (0)", "water", "James Clark Ross", "Fluorometer", "Density", "Irradiance", " downward PAR", "CTD/Rosette", "Fluorescence", "hemispherical photodiode", "Temperature", " water", "Irradiance", "Pressure", "Calculated", "chlorophyll", "14. Life underwater", "Fluorometer", " in-situ", "Temperature", " water", " potential", "Fluorescence", " chlorophyll", "Sigma theta (Computed by UNESCO SVAN function)", "DEPTH", " water", "downward PAR", "Temperature", "in situ", "CTD Rosette", "Sigma theta Computed by UNESCO SVAN function", "Light meter", " hemispherical photodiode", "Light meter", "Joint Global Ocean Flux Study JGOFS", "sigma theta 0", "CTD", "JR19921026", "660 nm", "Optical beam attenuation coefficient", "DEPTH", "Earth System Research", "Optical beam attenuation coefficient", " 660 nm", "Transmissometer", "Pressure", " water", "Joint Global Ocean Flux Study (JGOFS)"], "contacts": [{"organization": "Owens, Nick", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1594/pangaea.194648"}, {"rel": "self", "type": "application/geo+json", "title": "10.1594/pangaea.194648", "name": "item", "description": "10.1594/pangaea.194648", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1594/pangaea.194648"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-01-01T00:00:00Z"}}, {"id": "10.1594/pangaea.615227", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-19T16:17:59Z", "type": "Dataset", "title": "Chlorophyll and phaeopigments in surface sediment profile PE236-20", "description": "Chlorophyll a and Phaeopigments were extracted with acetone 90% from freezed dried sediment following the method of Yentsch &amp; Menzel (1963): A method for the determination of phytoplankton chlorophyll a and phaeophytin by fluorescence. Deep-Sea Res 10: 221-231. Chlorophyll a and Phaeopigments were measured with a Turner 700 fluorometre following Shuman and Lorenzen (1975): Quantitative degradation of chlorophyll by a marine herbivore, Limnology and Oceanography, 20.", "keywords": ["Replicates", "PE2xx", "bottom max", "Chlorophyll a", "Depth", "Depth", " top/min", "DEPTH", " sediment/rock", "Hotspot Ecosystem Research on the Margins of European Seas HERMES", "Chlorophyll pigment equivalents", "sediment rock", "Chloroplastic pigment equivalents", "Phaeopigments", " standard deviation", "Chloroplastic pigment equivalents", " standard deviation", "European Margin Strata Formation (EuroSTRATAFORM)", "DEPTH", "top min", "Earth System Research", "Depth", " bottom/max", "14. Life underwater", "standard deviation", "Phaeopigments", "Chlorophyll a", " standard deviation", "European Margin Strata Formation EuroSTRATAFORM", "Hotspot Ecosystem Research on the Margins of European Seas (HERMES)", "MultiCorer"], "contacts": [{"organization": "Garcia, Rosa, Thomsen, Laurenz,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1594/pangaea.615227"}, {"rel": "self", "type": "application/geo+json", "title": "10.1594/pangaea.615227", "name": "item", "description": "10.1594/pangaea.615227", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1594/pangaea.615227"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-01-01T00:00:00Z"}}, {"id": "10.3390/agronomy10081169", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:18:40Z", "type": "Journal Article", "created": "2020-08-10", "title": "Adaptation to Water and Salt Stresses of Solanum pimpinellifolium and Solanum lycopersicum var. cerasiforme", "description": "<p>Solanum pimpinellifolium and Solanum lycopersicum var. cerasiforme represent a valuable tool for tomato breeding, particularly for tolerance to abiotic stresses. Water stress and salinity are major constraints to tomato\uffe2\uff80\uff99s cultivation, and for which limited genetic variability has been reported within the cultivated species. We evaluated four accessions of S. pimpinellifolium and four of S. l. var. cerasiforme for their adaptation to water deficit and salinity. The CO2 assimilation rate, stomatal conductance, substomatal CO2 concentration, transpiration rate, and leaf chlorophyll concentration were evaluated, as well as morphological and agronomic traits. The accessions showed a remarkable inter- and intra-species response variability to both stresses. Two S. pimpinellifolium accessions and one S. l. var. cerasiforme showed unaltered physiological parameters, thus indicating a good adaptation to water deficit. Two S. l. var. cerasiforme accessions showed an interesting performance under salt stress, one of which showing also good adaptation to water stress. In general, both stresses showed a negative impact on leaf size and fruit fresh weight, especially in the big-sized fruits. However, flowering, fruit setting and earliness remained unaltered or even improved when compared to control conditions. Stressed plants yielded fruits with higher \uffc2\uffb0 Brix. Response to stresses seemed to be linked to origin environmental conditions, notwithstanding, variability was observed among accessions of the same region.</p>", "keywords": ["2. Zero hunger", "0301 basic medicine", "Salinity", "abiotic stress", "phenotyping", "S", "Soil Plant Analysis Development (SPAD) chlorophyll measurement", "Agriculture", "gas exchange", "15. Life on land", "F06 Irrigation", "Abiotic stress", "6. Clean water", "salinity", "Tomato wild relatives", "tomato wild relatives", "GENETICA", "03 medical and health sciences", "Phenotyping", "Gas exchange", "F40 Plant ecology", "Water deficit", "water deficit"], "contacts": [{"organization": "Mart\u00ednez-Cuenca, Mary-Rus, Pereira-D\u00edas, Leandro, Soler Aleixandre, Salvador, L\u00f3pez-Serrano, Lidia, Alonso-Mart\u00edn, David, Calatayud, \u00c1ngeles, D\u00edez, Mar\u00eda Jos\u00e9,", "roles": ["creator"]}]}, "links": [{"href": "http://www.mdpi.com/2073-4395/10/8/1169/pdf"}, {"href": "https://www.mdpi.com/2073-4395/10/8/1169/pdf"}, {"href": "https://doi.org/10.3390/agronomy10081169"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agronomy", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/agronomy10081169", "name": "item", "description": "10.3390/agronomy10081169", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/agronomy10081169"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-08-10T00:00:00Z"}}, {"id": "10.3390/jof7050333", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-19T16:18:46Z", "type": "Journal Article", "created": "2021-04-27", "title": "Resilience of Epiphytic Lichens to Combined Effects of Increasing Nitrogen and Solar Radiation", "description": "<p>Lichens are classified into different functional groups depending on their ecological and physiological response to a given environmental stressor. However, knowledge on lichen response to the synergistic effect of multiple environmental factors is extremely scarce, although vital to get a comprehensive understanding of the effects of global change. We exposed six lichen species belonging to different functional groups to the combined effects of two nitrogen (N) doses and direct sunlight involving both high temperatures and ultraviolet (UV) radiation for 58 days. Irrespective of their functional group, all species showed a homogenous response to N with cumulative, detrimental effects and an inability to recover following sunlight, UV exposure. Moreover, solar radiation made a tolerant species more prone to N pollution\uffe2\uff80\uff99s effects. Our results draw attention to the combined effects of global change and other environmental drivers on canopy defoliation and tree death, with consequences for the protection of ecosystems.</p>", "keywords": ["mediterranean ecosystems", "0106 biological sciences", "2. Zero hunger", "chlorophyll fluorescence", "QH301-705.5", "nitrogen pollution", "Fv/Fm ratio", "Biology (General)", "15. Life on land", "forest decay", "01 natural sciences", "global change", "Article"]}, "links": [{"href": "http://www.mdpi.com/2309-608X/7/5/333/pdf"}, {"href": "https://www.mdpi.com/2309-608X/7/5/333/pdf"}, {"href": "https://doi.org/10.3390/jof7050333"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Fungi", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/jof7050333", "name": "item", "description": "10.3390/jof7050333", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/jof7050333"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-04-26T00:00:00Z"}}, {"id": "10.4067/s0718-58392015000500014", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:19:00Z", "type": "Journal Article", "created": "2015-10-09", "description": "Straw mulching is an effective measure to improve soil properties, crop growth, and yield. To further understand the advantage mechanisms of straw mulching, a field experiment with seven straw mulching levels (0 to 18 000 kg ha-1) was conducted to study the effects of straw mulching on maize (Zea mays L.) photosynthesis and rhizosphere soil micro-ecological environment. Results showed that maize chlorophyll content was evidently affected by straw mulching, and the highest chlorophyll content was at 12 000 kg ha-1 (M4). Straw mulching could significantly improve the photosynthetic characteristics of maize, and the difference between M4 and 0 kg ha-1 (M0) was significant. There was as trend change in soil microbe quantity; it first increased and then decreased with increasing straw mulching levels, and the most suitable straw mulching level for different types of microorganisms was 9000 kg ha-1 (M3) or M4. Straw mulching significantly enhanced soil enzyme urease, invertase, dehydrogenase, and protease activities, but when the straw mulching level reached a certain level, the effect of straw mulching was no longer apparent and even had some adverse effects at straw mulching levels higher than 15 000 kg ha-1 (M5). Yield in M4 (10 186.84 kg ha-1) was the highest compared with M0 (9365.12 kg ha-1), and yield significantly increased by 8.8%. Correlation analyses indicated that the soil microbe quantity and aforementioned enzyme activities were all significantly and positively correlated with maize chlorophyll content, photosynthetic rate, and yield. Findings suggest that straw mulching can apparently increase soil microbe quantity and enzyme activities and improve crop photosynthesis and yield; the M4 level is the most reasonable straw mulching level in this study under comprehensive consideration, and a straw mulching level that is too high (over M5) will have some negative effects.", "keywords": ["2. Zero hunger", "0106 biological sciences", "photosynthesis", "enzyme activities", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "microbe quantity", "yield", "Chlorophyll content", "Zea mays", "01 natural sciences"], "contacts": [{"organization": "Zhang, Xiangqian, Qian, Yiliang, Cao, Chengfu,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.4067/s0718-58392015000500014"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chilean%20journal%20of%20agricultural%20research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.4067/s0718-58392015000500014", "name": "item", "description": "10.4067/s0718-58392015000500014", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.4067/s0718-58392015000500014"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-12-01T00:00:00Z"}}, {"id": "10.5194/bg-14-1969-2017", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:19:14Z", "type": "Journal Article", "created": "2016-11-28", "title": "Modelling sun-induced fluorescence and photosynthesis with a land surface model at local and regional scales in northern Europe", "description": "<p>Abstract. Recent satellite observations of sun-induced chlorophyll fluorescence (SIF) are thought to provide a large-scale proxy for gross primary production (GPP), thus providing a new way to assess the performance of land surface models (LSMs). In this study, we assessed how well SIF is able to predict GPP in the Fenno-Scandinavian region and what potential limitations for its application exist. We implemented a SIF model into the JSBACH LSM and used active leaf level chlorophyll fluorescence measurements (ChlF) to evaluate the performance of the SIF module at a coniferous forest at Hyyti\uffc3\uffa4l\uffc3\uffa4, Finland. We also compared simulated GPP and SIF at four Finnish micrometeorological flux measurement sites to observed GPP as well as to satellite observed SIF. Finally, we conducted a regional model simulation for the Fenno-Scandinavian region with JSBACH and compared the results to SIF retrievals from the GOME-2 (Global Ozone Monitoring Experiment-2) space-borne spectrometer and to observation-based regional GPP estimates. Both observations and simulations revealed that SIF can be used to estimate GPP at both site and regional scales. The GOME-2 based SIF was a better proxy for GPP than the remotely sensed fAPAR (fraction of absorbed photosynthetic active radiation by vegetation), even though high SIF values occurred during early spring at the northern latitudes, although these are not likely to be associated with photosynthesis.                         </p>", "keywords": ["EDDY COVARIANCE", "DATA ASSIMILATION SYSTEM", "FLUX MEASUREMENTS", "SCOTS PINE FOREST", "01 natural sciences", "7. Clean energy", "Ecology", " Evolution", " Behavior and Systematics; Earth-Surface Processes", "CO2 EXCHANGE", "PHOTOSYSTEM-II", "Life", "QH501-531", "QH540-549.5", "SDG 15 - Life on Land", "0105 earth and related environmental sciences", "QE1-996.5", "Ecology", "BOREAL CONIFEROUS FOREST", "BIOCHEMICAL-MODEL", "Forestry", "Geology", "15. Life on land", "TERRESTRIAL CHLOROPHYLL FLUORESCENCE", "Physical sciences", "Environmental sciences", "13. Climate action", "ITC-ISI-JOURNAL-ARTICLE", "ENERGY-BALANCE", "ITC-GOLD"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/585578/2/bg-14-1969-2017.pdf"}, {"href": "https://bg.copernicus.org/articles/14/1969/2017/bg-14-1969-2017.pdf"}, {"href": "https://doi.org/10.5194/bg-14-1969-2017"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeosciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5194/bg-14-1969-2017", "name": "item", "description": "10.5194/bg-14-1969-2017", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/bg-14-1969-2017"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-11-28T00:00:00Z"}}, {"id": "10.5281/zenodo.17475742", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:20:14Z", "type": "Dataset", "title": "In-situ and UAV dataset with crop and soil parameters obtained from winter wheat fields", "description": "unspecifiedThe study area was located in the Danubian Plain, Bulgaria, near the town of Knezha (43.495\u00b0N, 24.081\u00b0E). Five field campaigns (November, March, April, May, and June) were conducted during the 2016-2017 agricultural season and two (November and April) during the 2017-2018 agricultural season. Each campaign took four-five days to complete. A hierarchical sampling strategy, consisting of three levels, was adopted: Unit (a single commercial agricultural field), Elementary Sampling Unit (ESU; a 20 \u00d7 20 m plot), and Elementary Sub-Sampling Unit (ESSU; a particular location in the ESU where measurement is taken). Six Units were selected for sampling during each agricultural season. Different number of ESUs were sampled in each Unit depending of its size and diversity of soils. The location of the ESUs was kept unchanged during the season except in case relocation was needed due to waterlogging. The geographic coordinates were measured each time an ESU was visited, irrespective of whether it was relocated or not and a unique ID assigned to the ESU. Thus, data from each visit are presented as a separate independent record (row) in the dataset. In each ESU there were 3 ESSUs, one at the center and two at opposite corners of the ESU. The biological yield was measured only in the central ESSU. The dataset contains only data averaged at ESU level. Two unique identifiers, Unit_ID and ESU_ID, were used across the dataset's tables, helping identify data records and connect tables. The Unit_ID consists of the season and the Unit number, for instance \u201cS16-17_U1\u201d, where \u201cS16-17\u201d is the agricultural season 2016-2017, and \u201cU1\u201d is Unit 1. The ESU_ID consists of the month and year of the field campaign, the Unit number, and the ESU number, for instance \u201capr2017_1_2\u201d, where \u201capr2017\u201d is the April 2017 field campaign, \u201c1\u201d is the Unit number, and \u201c2\u201d is the ESU number.   The LAI, fIPAR, FAPAR, and fCover were measured using AccuPAR LP-80 ceptometer. The CC was measured using CCM-300. The AGB and plant nitrogen samples were collected from a 1 m x 1 m plot at the central ESSU and 50 cm x 50 cm plots in the other two ESSUs. The nitrogen (N) content of the above-ground organs was determined by the Kjeldahl method and expressed as per-cent of the dry weight. N uptake (g m-2) was determined as the product of N content and the dry AGB. Soil moisture content (W) was measured gravimetrically at the surface (0-5 cm) and, in some ESUs, at three additional depths (0-30 cm, 30-60 cm, and 60-100 cm) in 10 cm increments. The data were expressed in percent by mass. Reflectance data was collected using ASD FieldSpec 4 HiRes Field Spectrometer (ASD HH FS4 HiRes). Crop phenology was reported after Zadoks et al. (1974). The damages and weeds status were assessed using five-point rating scales.   The data from the four soil profiles included morphological description of soil horizons, texture (the particle-size distribution was determined by sieving and the pipette method in accordance with ISO 11277-2020), concentration of organic carbon, pH, bulk density, water retention at suctions from 0.25 kPa (pF 0.4) to 33 kPa (pF 2.7), total porosity. Soil water retention curves (pF curves) were obtained during the drainage of the samples by using the suction plate method, pressure membrane apparatus, and desiccators methods, as described in (Rousseva et al., 2017). The field capacity (FC) was estimated by the water content retained at a suction of 10 kPa (pF = 2.0). The wilting point was estimated at a suction 1500 kPa (pF = 4.2). The water retention experimental data at different suctions were approximated with the van Genuchten equation (Van Genuchten, 1980).  The crop calendar and management data included information for the studied winter wheat fields, including soil type, predecessor, pre-sowing preparation, variety, sowing date and norm, dates and type of fertilization, plant protection measures, dates of the main development stages of winter wheat, harvesting date and yield. \u00a0\u00a0  Multispectral image mosaics of the studied fields were generated using the fixed-wing drone eBee Ag furnished with Sequoia camera. The camera has Multi-channel sensor with green (550 nm), red (660 nm), red edge (735 nm), and NIR (790 nm) bands.  Meteorological data were collected by an automatic telemetric agro-meteorological station ADCON addVantage Pro6.5 installed in the vicinity of the town of Knezha. The station operated between 30.11.2016 and 22.03.2017 on its initial location (Location 1: 43.521917\u00b0N, 24.098848\u00b0E) and was later moved to another location, 1.3 km southwards (Location 2: 43.511391\u00b0N, 24.092252\u00b0E), where it collected data between 26.04.2017 and 3.12.2018. The station was equipped with sensors for air temperature, relative humidity, solar radiation, wind speed, wind direction, rain, PAR, soil moisture and temperature (12 depths between 5 cm and 115 cm at 10 cm intervals). Data from all sensors were recorded at 30 min intervals.  References:  Zadoks, J.C., T.T. Chang, C.F. Konzak. 1974. A decimal code of the growth stages of cereals. Weed Research, 14, 415-421.  Rousseva, S., Kercheva, M., Shishkov, T., Lair, G.J., Nikolaidis, N.P., Moraetis, D., Kr\u00e1m, P., Bernasconi, S.M., Blum, W.E.H., Menon, M., et al. 2017. Soil Water Characteristics of European SoilTrEC Critical Zone Observatories. In Advances in Agronomy; Academic Press: Cambridge, MA, USA, Volume 142, pp. 29\u201372.  van Genuchten, M. T., 1980. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Sci. Soc. Am. J. 44, 892\u2013898.", "keywords": ["Winter wheat", "Chlorophyll", "Phenology", "UAV", "Yield (agricultural)", "Soil profile", "Biomass", "Remote sensing", "Spectroscopy", "LAI"], "contacts": [{"organization": "Dimitrov, Petar, Roumenina, Eugenia, Jelev, Georgi, Filchev, Lachezar, Gikov, Alexander, Kamenova, Ilina, Ilieva, Iliana, Ganeva, Dessislava, Kercheva, Milena, Banov, Martin, Krasteva, Veneta, Kolchakov, Viktor, Dimitrov, Emil, Miteva, Nevena,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.17475742"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.17475742", "name": "item", "description": "10.5281/zenodo.17475742", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.17475742"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2025-10-31T00:00:00Z"}}, {"id": "10.7910/DVN/2XHKHB", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:21:03Z", "type": "Dataset", "created": "2009-01-01", "title": "Performance of diverse upland rice cultivars in low and high soil fertility conditions in West Africa", "description": "Traditional tropical japonica (Oryza sativa) and Oryzaglaberrimacultivars are typically grown in lowinput, subsistence production systems in the uplands of West Africa by resource-poor farmers. In these systems, low soil fertility (LF), which is generally associated with lower organic carbon content, and N and P availability, is one of the major constraints to rice productivity. Thus, cultivars adapted to LF are needed for the food security of farmers, who would otherwise be solely reliant on nutrient inputs to increase productivity. This study evaluated the performance of six diverse cultivars grown in LF and high soil fertility (HF) conditions with supplemental irrigation over two seasons. Average grain yield across all cultivars in LF was 54% of that in HF (156 vs. 340 g m_2). Three improved indicarice cultivars and CG 14 (O. glaberrima) out-yielded Morobe\u00b4 re\u00b4kan (traditional tropical japonica) and WAB450-IBP-38-HB (progeny from interspecific hybridization of tropical japonica and O. glaberrima) in LF (181 vs. 105 g m_2 on average). The high grain yield in LF was the result of large spikelet number m_2 due to superior tillering ability and high harvest index rather than biomass production. The high-yielding cultivars in LF consistently had lower leaf chlorophyll content and higher specific leaf area during the period from the early vegetative stage through the reproductive stage. Among them, two indicacultivars (B6144F-MR-6-0-0 and IR 55423-01) were also high yielding in HF. The use of improved indicacultivars adapted to LF, but also with input-responsiveness, appears to offer an attractive and economical approach to improving upland rice productivity and widening genetic diversity in this region.", "keywords": ["Specific leaf area", "West Africa", "Indica", "Upland rice", "Low soil fertility", "Chlorophyll content", "Oryzaglaberrima"], "contacts": [{"organization": "Saito, Kazuki, Futakuchi, Koichi,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.7910/DVN/2XHKHB"}, {"rel": "self", "type": "application/geo+json", "title": "10.7910/DVN/2XHKHB", "name": "item", "description": "10.7910/DVN/2XHKHB", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.7910/DVN/2XHKHB"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-01-01T00:00:00Z"}}, {"id": "10451/49877", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-19T16:21:15Z", "type": "Journal Article", "created": "2021-04-27", "title": "Resilience of Epiphytic Lichens to Combined Effects of Increasing Nitrogen and Solar Radiation", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Lichens are classified into different functional groups depending on their ecological and physiological response to a given environmental stressor. However, knowledge on lichen response to the synergistic effect of multiple environmental factors is extremely scarce, although vital to get a comprehensive understanding of the effects of global change. We exposed six lichen species belonging to different functional groups to the combined effects of two nitrogen (N) doses and direct sunlight involving both high temperatures and ultraviolet (UV) radiation for 58 days. Irrespective of their functional group, all species showed a homogenous response to N with cumulative, detrimental effects and an inability to recover following sunlight, UV exposure. Moreover, solar radiation made a tolerant species more prone to N pollution\u2019s effects. Our results draw attention to the combined effects of global change and other environmental drivers on canopy defoliation and tree death, with consequences for the protection of ecosystems.</p></article>", "keywords": ["mediterranean ecosystems", "0106 biological sciences", "2. Zero hunger", "chlorophyll fluorescence", "QH301-705.5", "nitrogen pollution", "Fv/Fm ratio", "Biology (General)", "15. Life on land", "forest decay", "01 natural sciences", "global change", "Article"]}, "links": [{"href": "http://www.mdpi.com/2309-608X/7/5/333/pdf"}, {"href": "https://repositorio.ulisboa.pt/bitstream/10451/49877/1/jof-07-00333.pdf"}, {"href": "https://www.mdpi.com/2309-608X/7/5/333/pdf"}, {"href": "https://doi.org/10451/49877"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Fungi", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10451/49877", "name": "item", "description": "10451/49877", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10451/49877"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-04-26T00:00:00Z"}}, {"id": "10451/59767", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:21:16Z", "type": "Journal Article", "created": "2018-11-03", "title": "\u03b415N of lichens reflects the isotopic signature of ammonia source", "description": "Although it is generally accepted that \u03b415N in lichen reflects predominating N isotope sources in the environment, confirmation of the direct correlation between lichen \u03b415N and atmospheric \u03b415N is still missing, especially under field conditions with most confounding factors controlled. To fill this gap and investigate the response of lichens with different tolerance to atmospheric N deposition, thalli of the sensitive Evernia prunastri and the tolerant Xanthoria parietina were exposed for ten weeks to different forms and doses of N in a field manipulation experiment where confounding factors were minimized. During this period, several parameters, namely total N, \u03b415N and chlorophyll a fluorescence, were measured. Under the experimental conditions, \u03b415N in lichens quantitatively responded to the \u03b415N of released gaseous ammonia (NH3). Although a high correlation between the isotopic signatures in lichen tissue and supplied N was found both in tolerant and sensitive species, chlorophyll a fluorescence indicated that the sensitive species very soon lost its photosynthetic functionality with increasing N availability. The most damaging response to the different N chemical forms was observed with dry deposition of NH3, although wet deposition of ammonium ions had a significant observable physiological impact. Conversely, there was no significant effect of nitrate ions on chlorophyll a fluorescence, implying differential sensitivity to dry deposition versus wet deposition and to ammonium versus nitrate in wet deposition. Evernia prunastri was most sensitive to NH3, then NH4+, with lowest sensitivity to NO3-. Moreover, these results confirm that lichen \u03b415N can be used to indicate the \u03b415N of atmospheric ammonia, providing a suitable tool for the interpretation of the spatial distribution of NH3 sources in relation to their \u03b415N signal.", "keywords": ["Air Pollutants", "Nitrates", "Lichens", "Nitrogen Isotopes", "Chlorophyll A", "0211 other engineering and technologies", "02 engineering and technology", "Models", " Theoretical", "chlorophyll a fluorescence", "01 natural sciences", "nitrogen deposition", "Xanthoria parietina", "Species Specificity", "Ammonia", "13. Climate action", "source spatial distribution", "biomonitoring", "physiological response", "Photosynthesis", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://repositorio.ulisboa.pt/bitstream/10451/59767/1/1-s2.0-S0048969718343560-main.pdf"}, {"href": "https://doi.org/10451/59767"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10451/59767", "name": "item", "description": "10451/59767", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10451/59767"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-01T00:00:00Z"}}, {"id": "10835/7551", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-19T16:21:19Z", "type": "Journal Article", "created": "2019-06-06", "title": "Spectral Response Analysis: An Indirect and Non-Destructive Methodology for the Chlorophyll Quantification of Biocrusts", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Chlorophyll a concentration (Chla) is a well-proven proxy of biocrust development, photosynthetic organisms\u2019 status, and recovery monitoring after environmental disturbances. However, laboratory methods for the analysis of chlorophyll require destructive sampling and are expensive and time consuming. Indirect estimation of chlorophyll a by means of soil surface reflectance analysis has been demonstrated to be an accurate, cheap, and quick alternative for chlorophyll retrieval information, especially in plants. However, its application to biocrusts has yet to be harnessed. In this study we evaluated the potential of soil surface reflectance measurements for non-destructive Chla quantification over a range of biocrust types and soils. Our results revealed that from the different spectral transformation methods and techniques, the first derivative of the reflectance and the continuum removal were the most accurate for Chla retrieval. Normalized difference values in the red-edge region and common broadband indexes (e.g., normalized difference vegetation index (NDVI)) were also sensitive to changes in Chla. However, such approaches should be carefully adapted to each specific biocrust type. On the other hand, the combination of spectral measurements with non-linear random forest (RF) models provided very good fits (R2 &gt; 0.94) with a mean root mean square error (RMSE) of about 6.5 \u00b5g/g soil, and alleviated the need for a specific calibration for each crust type, opening a wide range of opportunities to advance our knowledge of biocrust responses to ongoing global change and degradation processes from anthropogenic disturbance.</p></article>", "keywords": ["chlorophyll quantification", "remote sensing", "hyperspectral", "13. Climate action", "Science", "Q", "Biocrusts; biological soil crust; chlorophyll quantification; hyperspectral; random forest; remote sensing", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "random forest", "Biocrusts", "biological soil crust"]}, "links": [{"href": "http://www.mdpi.com/2072-4292/11/11/1350/pdf"}, {"href": "https://www.mdpi.com/2072-4292/11/11/1350/pdf"}, {"href": "https://doi.org/10835/7551"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Remote%20Sensing", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10835/7551", "name": "item", "description": "10835/7551", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10835/7551"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-05T00:00:00Z"}}, {"id": "11585/582157", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:21:25Z", "type": "Journal Article", "created": "2017-01-04", "title": "The cost of surviving nitrogen excess: energy and protein demand in the lichen Cladonia portentosa as revealed by proteomic analysis", "description": "Different nitrogen forms affect different metabolic pathways in lichens. In particular, the most relevant changes in protein expression were observed in the fungal partner, with NO 3- mostly affecting the energetic metabolism and NH 4+ affecting transport and regulation of proteins and the energetic metabolism much more than NO 3- did. Excess deposition of reactive nitrogen is a well-known agent of stress for lichens, but which symbiont is most affected and how, remains a mystery. Using proteomics can expand our understanding of stress effects on lichens. We investigated the effects of different doses and forms of reactive nitrogen, with and without supplementary phosphorus and potassium, on the proteome of the lichen Cladonia portentosa growing in a 'real-world' simulation of nitrogen deposition. Protein expression changed with the nitrogen treatments but mostly in the fungal partner, with NO3- mainly affecting the energetic metabolism and NH4+ also affecting the protein synthesis machinery. The photobiont mainly responded overexpressing proteins involved in energy production. This suggests that in response to nitrogen stress, the photobiont mainly supports the defensive mechanisms initiated by the mycobiont with an increased energy production. Such surplus energy is then used by the cell to maintain functionality in the presence of NO3-, while a futile cycle of protein production can be hypothesized to be induced by NH4+ excess. External supply of potassium and phosphorus influenced differently the responses of particular enzymes, likely reflecting the many processes in which potassium exerts a regulatory function.", "keywords": ["Chlorophyll", "Proteomics", "0301 basic medicine", "570", "mycobiont", "Lichens", "Nitrogen", "Cell Respiration", "Nitrate", "Mass Spectrometry", "Molecular mechanism", "03 medical and health sciences", "nitrate", "Ammonia", "Electrophoresis", " Gel", " Two-Dimensional", "Photosynthesis", "Ammonium", " Molecular mechanism", " Mycobiont", " Nitrate", " Photobiont", " Stress response", "Ammonium; Molecular mechanism; Mycobiont; Nitrate; Photobiont; Stress response; Genetics; Plant Science", "0303 health sciences", "Nitrates", "Stress response", "Chlorophyll A", "stress response", "Mycobiont", "ammonium", "Photobiont", "photobiont", "molecular mechanism", "Energy Metabolism", "Ammonium"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s00425-017-2647-2.pdf"}, {"href": "https://doi.org/11585/582157"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Planta", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "11585/582157", "name": "item", "description": "11585/582157", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/11585/582157"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-01-04T00:00:00Z"}}, {"id": "1887/4172281", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-19T16:21:33Z", "type": "Journal Article", "created": "2024-11-12", "title": "Biodegradable microplastics induce profound changes in lettuce (Lactuca sativa) defense mechanisms and to some extent deteriorate growth traits", "description": "The development of agricultural technologies has intensified the use of plastic in this sector. Products of plastic degradation, such as microplastics (MPs), potentially threaten living organisms, biodiversity and agricultural ecosystem functioning. Thus, biodegradable plastic materials have been introduced to agriculture. However, the effects of biodegradable plastic substitutes on soil ecosystems are even less known than those of traditional ones. Here, we studied the effects of environmentally relevant concentrations of MPs prepared from a biodegradable plastic (a starch-polybutylene adipate terephthalate blend, PBAT-BD-MPs) on the growth and defense mechanisms of lettuce (Lactuca sativa) in CLIMECS system (CLImatic Manipulation of ECosystem Samples). PBAT-BD-MPs in the highest concentrations negatively affected some traits of growth, i.e., dry weight percentage, specific leaf area, and both C and N contents. We observed more profound changes in plant physiology and biochemistry, as PBAT-BD-MPs decreased chlorophyll content and triggered a concerted response of plant defense mechanisms against oxidative stress. In conclusion, exposure to PBAT-BD-MPs induced plant oxidative stress and activated plant defense mechanisms, leading to oxidative homeostasis that sustained plant growth and functioning. Our study highlights the need for in-depth understanding of the effect of bioplastics on plants.", "keywords": ["580", "Chlorophyll", "0301 basic medicine", "570", "0303 health sciences", "salicylic acid", "Microplastics", "Lipid peroxidation", "lipid peroxidation", "Salicylic acid", "Biodegradable Plastics", "Plant Leaves", "Oxidative Stress", "03 medical and health sciences", "Starch-polybutylene adipate terephthalate", "Biodegradation", " Environmental", "total phenolic content", "starch-polybutylene adipate terephthalate", "Soil Pollutants", "PBAT", "Total phenolic content", "CLIMECS system", "Lactuca"]}, "links": [{"href": "https://doi.org/1887/4172281"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "1887/4172281", "name": "item", "description": "1887/4172281", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/1887/4172281"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-12-01T00:00:00Z"}}, {"id": "2954192991", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-19T16:22:00Z", "type": "Journal Article", "created": "2019-06-06", "title": "Spectral Response Analysis: An Indirect and Non-Destructive Methodology for the Chlorophyll Quantification of Biocrusts", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Chlorophyll a concentration (Chla) is a well-proven proxy of biocrust development, photosynthetic organisms\u2019 status, and recovery monitoring after environmental disturbances. However, laboratory methods for the analysis of chlorophyll require destructive sampling and are expensive and time consuming. Indirect estimation of chlorophyll a by means of soil surface reflectance analysis has been demonstrated to be an accurate, cheap, and quick alternative for chlorophyll retrieval information, especially in plants. However, its application to biocrusts has yet to be harnessed. In this study we evaluated the potential of soil surface reflectance measurements for non-destructive Chla quantification over a range of biocrust types and soils. Our results revealed that from the different spectral transformation methods and techniques, the first derivative of the reflectance and the continuum removal were the most accurate for Chla retrieval. Normalized difference values in the red-edge region and common broadband indexes (e.g., normalized difference vegetation index (NDVI)) were also sensitive to changes in Chla. However, such approaches should be carefully adapted to each specific biocrust type. On the other hand, the combination of spectral measurements with non-linear random forest (RF) models provided very good fits (R2 &gt; 0.94) with a mean root mean square error (RMSE) of about 6.5 \u00b5g/g soil, and alleviated the need for a specific calibration for each crust type, opening a wide range of opportunities to advance our knowledge of biocrust responses to ongoing global change and degradation processes from anthropogenic disturbance.</p></article>", "keywords": ["chlorophyll quantification", "remote sensing", "hyperspectral", "13. Climate action", "Science", "Q", "Biocrusts; biological soil crust; chlorophyll quantification; hyperspectral; random forest; remote sensing", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "random forest", "Biocrusts", "biological soil crust"]}, "links": [{"href": "http://www.mdpi.com/2072-4292/11/11/1350/pdf"}, {"href": "https://www.mdpi.com/2072-4292/11/11/1350/pdf"}, {"href": "https://doi.org/2954192991"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Remote%20Sensing", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2954192991", "name": "item", "description": "2954192991", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2954192991"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-05T00:00:00Z"}}, {"id": "2dcc638c-6eca-4f91-a860-8ccd5cf3a2ef", "type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[9.02, 52.76], [9.02, 52.76], [9.03, 52.76], [9.03, 52.76], [9.02, 52.76]]]}, "properties": {"themes": [{"concepts": [{"id": "farming"}], "scheme": "https://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_TopicCategoryCode"}, {"concepts": [{"id": "Zea mays"}, {"id": "Poaceae"}, {"id": "Shoots"}, {"id": "leaves"}, {"id": "Nitrates"}, {"id": "Nitrogen"}, {"id": "Elements"}, {"id": "Chlorophylls"}, {"id": "nutrient cycling in ecosystems"}, {"id": "Plant morphology"}, {"id": "Catch cropping"}, {"id": "Crop rotation"}, {"id": "Catch crops"}, {"id": "Sinapis alba"}, {"id": "Phacelia tanacetifolia"}, {"id": "Mustard"}, {"id": "Trifolium alexandrinum"}, {"id": "Mustard"}, {"id": "Phacelia"}, {"id": "oats"}, {"id": "maize"}, {"id": "Phosphorus"}, {"id": "Potassium"}, {"id": "Iron"}, {"id": "Carbon"}, {"id": "Magnesium"}, {"id": "Zinc"}, {"id": "Manganese"}, {"id": "Tillering"}, {"id": "biomass"}], "scheme": "AGROVOC Multilingual agricultural thesaurus"}, {"concepts": [{"id": "Landwirtschaftliche Anlagen und Aquakulturanlagen"}], "scheme": "GEMET - INSPIRE themes, version 1.0"}, {"concepts": [{"id": "Maize"}, {"id": "Nutritional state"}, {"id": "pre-grown catch crops mineral elements"}, {"id": "opendata"}], "scheme": "Individual"}], "rights": "Reports, articles, papers, scientific and non - scientific works of any form, including tables, maps, or any other kind of output, in printed or electronic form, based in whole or in part on the data supplied, must contain an acknowledgement of the form: \"Data reused from the BonaRes Data Centre www.bonares.de. This data were created as part of BonaRes Module A-Project - CATCHY's research activities.\n\nAlthough every care has been taken in preparing and testing the data, BonaRes Module A - Project - CATCHY and BonaRes Data Centre cannot guarantee that the data are correct; neither does BonaRes Module A - Project and BonaRes Data Centre accept any liability whatsoever for any error, missing data or omission in the data, or for any loss or damage arising from its use. The BonaRes Module A-Project-CATCHY and BonaRes Data Centre will not be responsible for any direct or indirect use which might be made of the data. The access to this data is restricted during embargo time. If prior access is requested, contact the data owner / author.", "updated": "2019-06-17", "type": "Dataset", "created": "2019-01-09", "language": "eng", "title": "Shoot development and nutritional status of maize 1st crop rotation cycle", "description": "A central aspect when including catch crops into a crop rotation is the conservation of nutrients in their biomass for the subsequently grown crop. However, the nutrient carry-over to the following crop depends not only on the amount of nutrients accumulated in individual catch crop plant materials but also on the specific degradation properties of their tissues, i.e. the temporal quantitative and qualitative release of scavenged nutrients. In our experiment we investigated the morphological and nutritional response of maize to 6 different pre-grown catch crop variants including pure stands and mixtures. \nAt two field sites in Germany (Asendorf - Lower Saxony and Triesdorf - Bavaria), maize (seeding rate: 9.4 seeds m-2) was established either after pure cultures of mustard, phacelia, bristle oat and Egyptian clover, after a mixture of these 4 species or after a commercial mixture of the DSV with a higher species diversity called TerraLife MaisPro. Their single-species nutrient accumulation was already published in the BonaRes-database under \u201cCatch crop nutrient uptake 1st crop rotation cycle\u201d.  Fallow plots were included as control. Maize was fertilized with 160 kg N ha-1 in Asendorf and 190 kg N ha-1 in Triesdorf. Since nutrient release from catch cops might temporarily vary, we studied the morphological and nutritional response of maize at 4 developmental stages ranging from leaf development over shoot elongation and flowering to cob development. As morphological parameters we investigated the number of leaves, tillers and cobs. In order to study the nutritional response we examined the shoot biomass, chlorophyll content or SPAD values and different nutrient concentrations in young and old leaves as well as the nitrate concentration in the press sap obtained from a 1 cm-piece of the stem base as marker for the nitrogen nutritional status. At both locations, the experiment was repeated in two subsequent years (2016 and 2017) and represented each the initial starting point of a wheat-catch crop-maize long-term rotation. Thus, maize response was tested in total in 4 environments. \nIn general we could not observe any significant impact of the pre-grown catch crop variant on morphological or nutritional shoot parameters at any of the investigated developmental stages and in none of the test environments. However, catch crop effects often develop in the long run when included regularly in a crop rotation.", "formats": [{"name": "CSV"}], "keywords": ["Zea mays", "Poaceae", "Shoots", "leaves", "Nitrates", "Nitrogen", "Elements", "Chlorophylls", "nutrient cycling in ecosystems", "Plant morphology", "Catch cropping", "Crop rotation", "Catch crops", "Sinapis alba", "Phacelia tanacetifolia", "Mustard", "Trifolium alexandrinum", "Mustard", "Phacelia", "oats", "maize", "Phosphorus", "Potassium", "Iron", "Carbon", "Magnesium", "Zinc", "Manganese", "Tillering", "biomass", "Landwirtschaftliche Anlagen und Aquakulturanlagen", "Maize", "Nutritional state", "pre-grown catch crops mineral elements", "opendata"], "contacts": [{"name": "Heuermann, Diana", "organization": "Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben", "position": "Staff member (Molecular Plant Nutrition)", "roles": ["author"], "phones": [{"value": "0049 39482 5514"}], "emails": [{"value": "heuermannd@ipk-gatersleben.de"}], "addresses": [{"deliveryPoint": ["Correnstra\u00dfe 3"], "city": "Stadt Seeland", "administrativeArea": "Saxony-Anhalt", "postalCode": "06466", "country": "Germany"}], "links": [{"href": null}]}, {"name": "Wir\u00e9n, Nicolaus von", "organization": "Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben", "position": "Department head", "roles": ["projectLeader"], "phones": [{"value": "0049 39482 5603"}], "emails": [{"value": "vonwiren@ipk-gatersleben.de"}], "addresses": [{"deliveryPoint": ["Correnstra\u00dfe 3"], "city": "Stadt Seeland", "administrativeArea": "Saxony-Anhalt", "postalCode": "06466", "country": "Germany"}], "links": [{"href": null}]}, {"name": "BonaRes Data Centre", "organization": "Leibniz Centre for Agricultural Landscape Research (ZALF)", "position": "Research Platform 'Data' - WG Geodata", "roles": ["publisher"], "phones": [{"value": "+49 33432 82 171"}], "emails": [{"value": "bonares-datenzentrum@zalf.de"}], "addresses": [{"deliveryPoint": ["Eberswalder Strasse 84"], "city": "M\u00fcncheberg", "administrativeArea": "Brandenburg", "postalCode": "15374", "country": "Germany"}], "links": [{"href": null}]}, {"organization": "Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben", "roles": ["contributor"]}], "title_alternate": "Biomass, development and nutrient accumulation in the above-ground biomass of maize after different catch crop variants in the first cycle of a wheat-catch crop-maize long-term rotation"}, "links": [{"href": "https://maps.bonares.de/mapapps/resources/apps/bonares/index.html?lang=en&doi=2dcc638c-6eca-4f91-a860-8ccd5cf3a2ef", "rel": "download"}, {"rel": "self", "type": "application/geo+json", "title": "2dcc638c-6eca-4f91-a860-8ccd5cf3a2ef", "name": "item", "description": "2dcc638c-6eca-4f91-a860-8ccd5cf3a2ef", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2dcc638c-6eca-4f91-a860-8ccd5cf3a2ef"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-17T00:00:00Z"}}, {"id": "4941261d-98ba-4c70-ad52-708e6cae460c", "type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[10.69, 53.86], [10.69, 53.86], [10.7, 53.86], [10.7, 53.86], [10.69, 53.86]]]}, "properties": {"rights": "Restrictions applied to assure the protection of privacy or intellectual property, and any special restrictions or limitations or warnings on using the resource or metadata. Reports, articles, papers, scientific and non - scientific works of any form, including tables, maps, or any other kind of output, in printed or electronic form, based in whole or in part on the data supplied, must contain an acknowledgement of the form: \"Data reused from the BonaRes Data Centre www.bonares.de. This data were created as part of the Other's research activities.\" Although every care has been taken in preparing and testing the data, the Other and the BonaRes Data Centre cannot guarantee that the data are correct; neither does the Other and the BonaRes Data Centre accept any liability whatsoever for any error, missing data or omission in the data, or for any loss or damage arising from its use. The Other and BonaRes Data Centre will not be responsible for any direct or indirect use which might be made of the data.", "updated": "2023-08-02", "type": "Service", "created": "2023-07-26", "language": "eng", "title": "Web Map Service of the dataset 'Chlorophyll-Data of eutrophied urban ponds in L\u00fcbeck (Germany, Schleswig-Holstein)'", "description": "This WMS  Map Service includes spatial information used by datasets 'AGIS Map Service of the dataset 'Chlorophyll-Data of eutrophied urban ponds in L\u00fcbeck (Germany, Schleswig-Holstein)''", "formats": [{"name": "CSV"}], "keywords": ["infoMapAccessService", "Soil", "chlorophylls", "chlorophyll fluorescence", "surface water", "urban environment", "eutrophication", "Algae", "Cyanobacteria"], "contacts": [{"name": "Christian Lohaus", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "christian.lohaus@th-luebeck.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": {"url": null, "protocol": null, "protocol_url": "", "name": "0009-0002-6950-3952", "name_url": "", "description": "ORCID", "description_url": "", "applicationprofile": null, "applicationprofile_url": "", "function": null}}]}, {"name": "Norbert Reintjes", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["projectLeader"], "phones": [{"value": null}], "emails": [{"value": "norbert.reintjes@th-luebeck.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"name": null, "organization": "Leibniz Centre for Agricultural Landscape Research (ZALF)", "position": "Research Platform 'Data Analysis & Simulation' - Workgroup Research Data Management", "roles": ["publisher"], "phones": [{"value": "+49 33432 82 300"}], "emails": [{"value": "dataservice@zalf.de"}], "addresses": [{"deliveryPoint": ["Eberswalder Strasse 84"], "city": "M\u00fcncheberg", "administrativeArea": "Brandenburg", "postalCode": "15374", "country": "Germany"}], "links": [{"href": null}]}, {"name": "Franz Weinland", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "franz.weinland@icloud.com"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": {"url": null, "protocol": null, "protocol_url": "", "name": "0000-0002-5071-2271", "name_url": "", "description": "ORCID:", "description_url": "", "applicationprofile": null, "applicationprofile_url": "", "function": null}}]}, {"name": "Tillmann Westphal", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "tillmann.westphal@th-luebeck.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"name": "Fabian M\u00f6ller", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "f.moeller@stud.th-luebeck.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"name": "Norbert Reintjes", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "norbert.reintjes@th-luebeck.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"organization": "Technische Hochschule L\u00fcbeck", "roles": ["contributor"]}], "themes": [{"concepts": [{"id": "infoMapAccessService"}], "scheme": "GEMET - INSPIRE themes, version 1.0"}, {"concepts": [{"id": "Soil"}, {"id": "chlorophylls"}, {"id": "chlorophyll fluorescence"}, {"id": "surface water"}, {"id": "urban environment"}, {"id": "eutrophication"}, {"id": "Algae"}, {"id": "Cyanobacteria"}], "scheme": "AGROVOC Multilingual agricultural thesaurus"}]}, "links": [{"href": "https://maps.bonares.de/mapapps/resources/apps/bonares/index.html?lang=en&mid=4941261d-98ba-4c70-ad52-708e6cae460c", "rel": "download"}, {"href": "https://maps.bonares.de/wss/service/ags-relay/ags/guest/arcgis/rest/services/Extern/ID_E114_KMW_CHL_2022_PUB_Geo_point/MapServer/WMSServer?request=GetCapabilities&service=WMS"}, {"href": "https://maps.bonares.de/wss/service/ags-relay/ags/guest/arcgis/rest/services/Extern/Measuring_Point_KMW_chl_2022/MapServer/WMSServer?request=GetCapabilities&service=WMS"}, {"rel": "self", "type": "application/geo+json", "title": "4941261d-98ba-4c70-ad52-708e6cae460c", "name": "item", "description": "4941261d-98ba-4c70-ad52-708e6cae460c", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/4941261d-98ba-4c70-ad52-708e6cae460c"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-08-02T00:00:00Z"}}, {"id": "aac58420-3ddc-49b3-8b03-c171e44b0283", "type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[9.02, 52.76], [9.02, 52.76], [9.03, 52.76], [9.03, 52.76], [9.02, 52.76]]]}, "properties": {"rights": "Reports, articles, papers, scientific and non - scientific works of any form, including tables, maps, or any other kind of output, in printed or electronic form, based in whole or in part on the data supplied, must contain an acknowledgement of the form: \"Data reused from the BonaRes Data Centre www.bonares.de. This data were created as part of BonaRes Module A-Project - CATCHY's research activities. Although every care has been taken in preparing and testing the data, BonaRes Module A - Project - CATCHY and BonaRes Data Centre cannot guarantee that the data are correct; neither does BonaRes Module A - Project and BonaRes Data Centre accept any liability whatsoever for any error, missing data or omission in the data, or for any loss or damage arising from its use. The BonaRes Module A-Project-CATCHY and BonaRes Data Centre will not be responsible for any direct or indirect use which might be made of the data. The access to this data is restricted during embargo time. If prior access is requested, contact the data owner / author.", "updated": "2021-03-01", "type": "Service", "created": "2019-01-09", "language": "eng", "title": "WMS Service of the dataset 'Shoot development and nutritional status of maize 1st crop rotation cycle'", "description": "This WMS Service includes spatial information used by datasets 'WMS Service of the dataset 'Shoot development and nutritional status of maize 1st crop rotation cycle''", "keywords": ["infoMapAccessService", "Zea mays", "Poaceae", "Shoots", "leaves", "Nitrates", "Nitrogen", "Elements", "Chlorophylls", "nutrient cycling in ecosystems", "Plant morphology", "Catch cropping", "Crop rotation", "Catch crops", "Sinapis alba", "Phacelia tanacetifolia", "Mustard", "Trifolium alexandrinum", "Mustard", "Phacelia", "oats", "maize", "Phosphorus", "Potassium", "Iron", "Carbon", "Magnesium", "Zinc", "Manganese", "Tillering", "biomass", "opendata"], "contacts": [{"name": "Heuermann, Diana", "organization": "Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben", "position": "Staff member (Molecular Plant Nutrition)", "roles": ["author"], "phones": [{"value": "0049 39482 5514"}], "emails": [{"value": "heuermannd@ipk-gatersleben.de"}], "addresses": [{"deliveryPoint": ["Correnstra\u00dfe 3"], "city": "Stadt Seeland", "administrativeArea": "Saxony-Anhalt", "postalCode": "06466", "country": "Germany"}], "links": [{"href": null}]}, {"name": "Wir\u00e9n, Nicolaus von", "organization": "Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben", "position": "Department head", "roles": ["projectLeader"], "phones": [{"value": "0049 39482 5603"}], "emails": [{"value": "vonwiren@ipk-gatersleben.de"}], "addresses": [{"deliveryPoint": ["Correnstra\u00dfe 3"], "city": "Stadt Seeland", "administrativeArea": "Saxony-Anhalt", "postalCode": "06466", "country": "Germany"}], "links": [{"href": null}]}, {"name": "BonaRes Data Centre", "organization": "Leibniz Centre for Agricultural Landscape Research (ZALF)", "position": "Research Platform 'Data'  - WG Geodata", "roles": ["publisher"], "phones": [{"value": "+49 33432 82 171"}], "emails": [{"value": "bonares-datenzentrum@zalf.de"}], "addresses": [{"deliveryPoint": ["Eberswalder Strasse 84"], "city": "M\u00fcncheberg", "administrativeArea": "Brandenburg", "postalCode": "15374", "country": "Germany"}], "links": [{"href": null}]}, {"organization": "Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben", "roles": ["contributor"]}], "themes": [{"concepts": [{"id": "infoMapAccessService"}], "scheme": "GEMET - INSPIRE themes, version 1.0"}, {"concepts": [{"id": "Zea mays"}, {"id": "Poaceae"}, {"id": "Shoots"}, {"id": "leaves"}, {"id": "Nitrates"}, {"id": "Nitrogen"}, {"id": "Elements"}, {"id": "Chlorophylls"}, {"id": "nutrient cycling in ecosystems"}, {"id": "Plant morphology"}, {"id": "Catch cropping"}, {"id": "Crop rotation"}, {"id": "Catch crops"}, {"id": "Sinapis alba"}, {"id": "Phacelia tanacetifolia"}, {"id": "Mustard"}, {"id": "Trifolium alexandrinum"}, {"id": "Mustard"}, {"id": "Phacelia"}, {"id": "oats"}, {"id": "maize"}, {"id": "Phosphorus"}, {"id": "Potassium"}, {"id": "Iron"}, {"id": "Carbon"}, {"id": "Magnesium"}, {"id": "Zinc"}, {"id": "Manganese"}, {"id": "Tillering"}, {"id": "biomass"}], "scheme": "AGROVOC Multilingual agricultural thesaurus"}, {"concepts": [{"id": "opendata"}], "scheme": "Individual"}]}, "links": [{"href": "https://maps.bonares.de/mapapps/resources/apps/bonares/index.html?lang=en&doi=aac58420-3ddc-49b3-8b03-c171e44b0283", "rel": "information"}, {"href": "https://maps.bonares.de/wss/service/ags-relay/ags/guest/arcgis/rest/services/Catchy/catchy_ID_1029_CATCHY_SP2_1ST_CROP_ROTATION_CYCLE_POINT/MapServer/WMSServer?request=GetCapabilities&service=WMS"}, {"href": "https://maps.bonares.de/wss/service/ags-relay/ags/guest/arcgis/rest/services/Catchy/catchy_ID_1029_CATCHY_SP2_1ST_CROP_ROTATION_CYCLE_POINT/MapServer/WMSServer?request=GetCapabilities&service=WMS"}, {"href": "https://maps.bonares.de/wss/service/ags-relay/ags/guest/arcgis/rest/services/Catchy/catchy_ID_1029_CATCHY_SP2_1ST_CROP_ROTATION_CYCLE_POINT/MapServer/WMSServer?request=GetCapabilities&service=WMS"}, {"href": "https://maps.bonares.de/wss/service/ags-relay/ags/guest/arcgis/rest/services/Catchy/catchy_ID_1029_CATCHY_SP2_1ST_CROP_ROTATION_CYCLE_POINT/MapServer/WMSServer?request=GetCapabilities&service=WMS"}, {"rel": "self", "type": "application/geo+json", "title": "aac58420-3ddc-49b3-8b03-c171e44b0283", "name": "item", "description": "aac58420-3ddc-49b3-8b03-c171e44b0283", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/aac58420-3ddc-49b3-8b03-c171e44b0283"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-03-01T00:00:00Z"}}, {"id": "597d2f31-1136-4929-9da3-f968a8e945c3", "type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[5.81, 47.26], [5.81, 54.76], [15.77, 54.76], [15.77, 47.26], [5.81, 47.26]]]}, "properties": {"rights": "Restrictions applied to assure the protection of privacy or intellectual property, and any special restrictions or limitations or warnings on using the resource or metadata. (e.g. Reports, articles, papers, scientific and non-scientific works of any form, including tables, maps, or any other kind of output, in printed or electronic form, based in whole or in part on the data supplied, must contain an acknowledgement of the form: \"Data re-used from the BonaRes Data Centre www.bonares.de. This data were created as part of BonaRes Module A-Project - ORDIAMUR's research activities.\" Although every care has been taken in preparing and testing the data, BonaRes Module A-Project-ORDIAMUR and BonaRes Data Centre cannot guarantee that the data are correct; neither does BonaRes Module A-Project and BonaRes Data Centre accept any liability whatsoever for any error, missing data or omission in the data, or for any loss or damage arising from its use. The BonaRes Module A-Project-ORDIAMUR and BonaRes Data Centre will not be responsible for any direct or indirect use which might be made of the data. The access to this data is restricted during embargo time. If prior access is requested, contact the data owner/author.)", "updated": "2019-02-12", "type": "Dataset", "created": "2017-12-07", "language": "eng", "title": "leaf_area_growth", "description": "Data on leaf area growth of Malus (M26) over 32 days.", "formats": [{"name": "CSV"}], "keywords": ["leaf area", "Chlorophylls", "Bodennutzung", "Landwirtschaft", "leaf growth", "chlorophyll", "SPAD"], "contacts": [{"name": "Maik Lucas", "organization": "Helmholtz Centre for Environmental Research \u2013 UFZ", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "maik.lucas@ufz.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"name": "Doris Vetterlein", "organization": "Helmholtz Centre for Environmental Research \u2013 UFZ", "position": null, "roles": ["projectLeader"], "phones": [{"value": null}], "emails": [{"value": "doris.vetterlein@ufz.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"name": "BonaRes Data Centre", "organization": "Leibniz Centre for Agricultural Landscape Research (ZALF)", "position": "Research Platform Data", "roles": ["publisher"], "phones": [{"value": "+49 33432 82 171"}], "emails": [{"value": "bonares-datenzentrum@zalf.de"}], "addresses": [{"deliveryPoint": ["Eberswalder Strasse 84"], "city": "M\u00fcncheberg", "administrativeArea": "Brandenburg", "postalCode": "15374", "country": "Germany"}], "links": [{"href": null}]}, {"organization": "Helmholtz Centre for Environmental Research \u2013 UFZ", "roles": ["contributor"]}], "themes": [{"concepts": [{"id": "leaf area"}, {"id": "Chlorophylls"}], "scheme": "AGROVOC Multilingual agricultural thesaurus"}, {"concepts": [{"id": "Bodennutzung"}, {"id": "Landwirtschaft"}], "scheme": "GEMET - Concepts, version 2.4"}, {"concepts": [{"id": "leaf growth"}, {"id": "chlorophyll"}, {"id": "SPAD"}], "scheme": "individual"}]}, "links": [{"href": "https://maps.bonares.de/mapapps/resources/apps/bonares/index.html?lang=en&doi=https://doi.org/10.20387/BonaRes-5HPY-4AKY", "rel": "download"}, {"rel": "self", "type": "application/geo+json", "title": "597d2f31-1136-4929-9da3-f968a8e945c3", "name": "item", "description": "597d2f31-1136-4929-9da3-f968a8e945c3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/597d2f31-1136-4929-9da3-f968a8e945c3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-12T00:00:00Z"}}, {"id": "394637d9-bdbe-4f69-973b-7ff7604bcd95", "type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[5.81, 47.26], [5.81, 54.76], [15.77, 54.76], [15.77, 47.26], [5.81, 47.26]]]}, "properties": {"license": "CC BY", "rights": "Restrictions applied to assure the protection of privacy or intellectual property, and any special restrictions or limitations or warnings on using the resource or metadata. (e.g. Reports, articles, papers, scientific and non-scientific works of any form, including tables, maps, or any other kind of output, in printed or electronic form, based in whole or in part on the data supplied, must contain an acknowledgement of the form: \"Data re-used from the BonaRes Data Centre www.bonares.de. This data were created as part of BonaRes Module A-Project - ORDIAMUR's research activities.\" Although every care has been taken in preparing and testing the data, BonaRes Module A-Project-ORDIAMUR and BonaRes Data Centre cannot guarantee that the data are correct; neither does BonaRes Module A-Project and BonaRes Data Centre accept any liability whatsoever for any error, missing data or omission in the data, or for any loss or damage arising from its use. The BonaRes Module A-Project-ORDIAMUR and BonaRes Data Centre will not be responsible for any direct or indirect use which might be made of the data. The access to this data is restricted during embargo time. If prior access is requested, contact the data owner/author.)", "updated": "2019-02-12", "type": "Dataset", "created": "2017-12-07", "language": "eng", "title": "Leaf_area_sizes_chlorophyll_measurement", "description": "Measured data of leaf area sizes and chlorophyll (SPAD) over time of individual plants.", "formats": [{"name": "CSV"}], "keywords": ["leaf area", "Chlorophylls", "Bodennutzung", "Landwirtschaft"], "contacts": [{"name": "Maik Lucas", "organization": "Helmholtz Centre for Environmental Research \u2013 UFZ", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "maik.lucas@ufz.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"name": "Doris Vetterlein", "organization": "Helmholtz Centre for Environmental Research \u2013 UFZ", "position": null, "roles": ["projectLeader"], "phones": [{"value": null}], "emails": [{"value": "doris.vetterlein@ufz.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"name": "BonaRes Data Centre", "organization": "Leibniz Centre for Agricultural Landscape Research (ZALF)", "position": "Research Platform Data", "roles": ["publisher"], "phones": [{"value": "+49 33432 82 171"}], "emails": [{"value": "bonares-datenzentrum@zalf.de"}], "addresses": [{"deliveryPoint": ["Eberswalder Strasse 84"], "city": "M\u00fcncheberg", "administrativeArea": "Brandenburg", "postalCode": "15374", "country": "Germany"}], "links": [{"href": null}]}, {"organization": "Helmholtz Centre for Environmental Research \u2013 UFZ", "roles": ["contributor"]}], "themes": [{"concepts": [{"id": "leaf area"}, {"id": "Chlorophylls"}], "scheme": "AGROVOC Multilingual agricultural thesaurus"}, {"concepts": [{"id": "Bodennutzung"}, {"id": "Landwirtschaft"}], "scheme": "GEMET - Concepts, version 2.4"}]}, "links": [{"href": "https://maps.bonares.de/mapapps/resources/apps/bonares/index.html?lang=en&doi=https://doi.org/10.20387/BonaRes-P7JR-5511", "rel": "download"}, {"rel": "self", "type": "application/geo+json", "title": "394637d9-bdbe-4f69-973b-7ff7604bcd95", "name": "item", "description": "394637d9-bdbe-4f69-973b-7ff7604bcd95", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/394637d9-bdbe-4f69-973b-7ff7604bcd95"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-12T00:00:00Z"}}, {"id": "7626e390-fdb9-47b0-8dad-3dc34843de30", "type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[10.69, 53.86], [10.69, 53.86], [10.7, 53.86], [10.7, 53.86], [10.69, 53.86]]]}, "properties": {"themes": [{"concepts": [{"id": "farming"}], "scheme": "https://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_TopicCategoryCode"}, {"concepts": [{"id": "Soil"}, {"id": "chlorophylls"}, {"id": "chlorophyll fluorescence"}, {"id": "surface water"}, {"id": "urban environment"}, {"id": "eutrophication"}, {"id": "Algae"}, {"id": "Cyanobacteria"}], "scheme": "AGROVOC Multilingual agricultural thesaurus"}, {"concepts": [{"id": "opendata"}], "scheme": "Individual"}, {"concepts": [{"id": "Boden"}], "scheme": "GEMET - INSPIRE themes, version 1.0"}], "license": "CC BY", "rights": "Restrictions applied to assure the protection of privacy or intellectual property, and any special restrictions or limitations or warnings on using the resource or metadata. Reports, articles, papers, scientific and non - scientific works of any form, including tables, maps, or any other kind of output, in printed or electronic form, based in whole or in part on the data supplied, must contain an acknowledgement of the form: \"Data reused from the BonaRes Data Centre www.bonares.de. This data were created as part of the Other's research activities.\" Although every care has been taken in preparing and testing the data, the Other and the BonaRes Data Centre cannot guarantee that the data are correct; neither does the Other and the BonaRes Data Centre accept any liability whatsoever for any error, missing data or omission in the data, or for any loss or damage arising from its use. The Other and BonaRes Data Centre will not be responsible for any direct or indirect use which might be made of the data.", "updated": "2023-08-03", "type": "Dataset", "created": "2023-07-26", "language": "eng", "title": "Chlorophyll-Data of eutrophied urban ponds in L\u00fcbeck (Germany, Schleswig-Holstein)", "description": "The dataset contains weekly total chlorophyll data as well as cyano-chlorophyll data gathered in 2022 in eutrophic urban ponds (Kr\u00e4henteich, M\u00fchlenteich). The ponds are fed by the river Wakenitz in L\u00fcbeck (Schleswig-Holstein - Germany). The measuring period spans the timeframe needed for chlorophyll-based assessment of trophic statet according to LAWA (May to October). As measuring-device a fluorometer (bbe AlgaeTorch 10) was used.\n\nResearch domain: Other\n\nResearch question: None", "formats": [{"name": "CSV"}], "keywords": ["Soil", "chlorophylls", "chlorophyll fluorescence", "surface water", "urban environment", "eutrophication", "Algae", "Cyanobacteria", "opendata", "Boden"], "contacts": [{"name": "Christian Lohaus", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "christian.lohaus@th-luebeck.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": {"url": null, "protocol": null, "protocol_url": "", "name": "0009-0002-6950-3952", "name_url": "", "description": "ORCID", "description_url": "", "applicationprofile": null, "applicationprofile_url": "", "function": null}}]}, {"name": "Norbert Reintjes", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["projectLeader"], "phones": [{"value": null}], "emails": [{"value": "norbert.reintjes@th-luebeck.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"name": null, "organization": "Leibniz Centre for Agricultural Landscape Research (ZALF)", "position": "Research Platform 'Data Analysis & Simulation' - Workgroup Research Data Management", "roles": ["publisher"], "phones": [{"value": "+49 33432 82 300"}], "emails": [{"value": "dataservice@zalf.de"}], "addresses": [{"deliveryPoint": ["Eberswalder Strasse 84"], "city": "M\u00fcncheberg", "administrativeArea": "Brandenburg", "postalCode": "15374", "country": "Germany"}], "links": [{"href": null}]}, {"name": "Franz Weinland", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "franz.weinland@icloud.com"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": {"url": null, "protocol": null, "protocol_url": "", "name": "0000-0002-5071-2271", "name_url": "", "description": "ORCID:", "description_url": "", "applicationprofile": null, "applicationprofile_url": "", "function": null}}]}, {"name": "Tillmann Westphal", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "tillmann.westphal@th-luebeck.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"name": "Fabian M\u00f6ller", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "f.moeller@stud.th-luebeck.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"name": "Norbert Reintjes", "organization": "Technische Hochschule L\u00fcbeck", "position": null, "roles": ["author"], "phones": [{"value": null}], "emails": [{"value": "norbert.reintjes@th-luebeck.de"}], "addresses": [{"deliveryPoint": [null], "city": null, "administrativeArea": null, "postalCode": null, "country": null}], "links": [{"href": null}]}, {"organization": "Technische Hochschule L\u00fcbeck", "roles": ["contributor"]}]}, "links": [{"href": "https://maps.bonares.de/mapapps/resources/apps/bonares/index.html?lang=en&mid=7626e390-fdb9-47b0-8dad-3dc34843de30", "rel": "download"}, {"rel": "self", "type": "application/geo+json", "title": "7626e390-fdb9-47b0-8dad-3dc34843de30", "name": "item", "description": "7626e390-fdb9-47b0-8dad-3dc34843de30", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/7626e390-fdb9-47b0-8dad-3dc34843de30"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-08-03T00:00:00Z"}}, {"id": "05a69fa9-c633-4a25-b34b-72a71dee1550", "type": "Feature", "geometry": {"type": "Polygon", "coordinates": [[[52.0, 16.64], [52.0, 26.37], [59.85, 26.37], [59.85, 16.64], [52.0, 16.64]]]}, "properties": {"themes": [{"concepts": [{"id": "oceans"}], "scheme": "https://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_TopicCategoryCode"}], "updated": "2013-01-11T14:14:18", "language": "eng", "title": "Chlorophyll Climatology over the Persian/Oman Gulfs - 1998-2009, April - Minimum, Maximum", "description": "Over the Persian Gulf and Oman Sea, climatology of the chlorophyll-a concentration for case 1 water (expressed in mg/m3). The climatology is based on the GlobColour (http://www.globcolour.info)  products obtained by the merging of MERIS MODIS and SeaWIFS data available during the period 1998-2009. The \"Minimum/Maximum\" product represents for each pixel, the observed range of data when computing the chlorophyll-a concentration product by merging for each of the 12 years the selected month (April). \nThe spatial resolution of the product is about 4km.\nThe product has been designed and produced by ACRI-ST INFOCEAN-DESK environment monitoring service from EU FP7 & ESA MyOcean GlobColour Products, ESA ENVISAT MERIS data, NASA MODIS and SeaWiFS data.\nThe GlobColour project has been initiated and funded by the ESA Data User Element Programme to develop a satellite based ocean colour data service to support global carbon-cycle research. The GlobColour project has largely benefited from NASA contributions, including the availability of the MODIS and SeaWiFS products; the in situ data base of radiometric and phytoplankton pigment data, and other oceanographic and atmospheric data: the SeaWiFS Bio-optical Archive and Storage System - SeaBASS (Werdell and Bailey, 2002). The global merged chlorophyll-a concentration for case 1 water is obtained by the merging of MERIS, MODIS and SeaWiFS data using an advanced retrieval based on fitting an in-water bio-optical model to the merged set of observed normalised water-leaving radiances (nLw?s). This technique is termed GSM because it originates from the Garver et al. (1997) bio-optical model (Maritorena and Siegel, 2005). 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