{"type": "FeatureCollection", "features": [{"id": "10.1016/j.earscirev.2022.104055", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:17:16Z", "type": "Journal Article", "created": "2022-05-12", "title": "The uncertain role of rising atmospheric CO2 on global plant transpiration", "description": "As CO2 concentration in the atmosphere rises, there is a need for improved physical understanding of its impact on global plant transpiration. This knowledge gap poses a major hurdle in robustly projecting changes in the global hydrologic cycle. For this reason, here we review the different processes by which atmospheric CO2 concentration affects plant transpiration, the several uncertainties related to the complex physiological and radiative processes involved, and the knowledge gaps which need to be filled in order to improve predictions of plant transpiration. Although there is a high degree of certainty that rising CO2 will impact plant transpiration, the exact nature of this impact remains unclear due to complex interactions between CO2 and climate, and key aspects of plant morphology and physiology. The interplay between these factors has substantial consequences not only for future climate and global vegetation, but also for water availability needed for sustaining the productivity of terrestrial ecosystems. Future changes in global plant transpiration in response to enhanced CO2 are expected to be driven by water availability, atmospheric evaporative demand, plant physiological processes, emergent plant disturbances related to increasing temperatures, and the modification of plant physiology and coverage. Considering the universal sensitivity of natural and agricultural systems to terrestrial water availability we argue that reliable future projections of transpiration is an issue of the highest priority, which can only be achieved by integrating monitoring and modeling efforts to improve the representation of CO2 effects on plant transpiration in the next generation of earth system models. \u00a9 2022 The Authors", "keywords": ["0301 basic medicine", "2. Zero hunger", "VAPOR-PRESSURE DEFICIT", "COMMUNITY LAND MODEL", "DECIDUOUS FOREST TREES", "TROPICAL RAIN-FOREST", "EARTH SYSTEM MODELS", "STOMATAL CONDUCTANCE", "Earth system models", "15. Life on land", "01 natural sciences", "6. Clean water", "Transpiration", "03 medical and health sciences", "DYNAMIC VEGETATION MODELS", "13. Climate action", "Earth and Environmental Sciences", "MOJAVE DESERT SHRUBS", "Climate change", "CO2", "ELEVATED CO2", "Atmospheric water demand", "WATER-USE EFFICIENCY", "Projections", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.earscirev.2022.104055"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Earth-Science%20Reviews", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.earscirev.2022.104055", "name": "item", "description": "10.1016/j.earscirev.2022.104055", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.earscirev.2022.104055"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-07-01T00:00:00Z"}}, {"id": "10.1016/j.rser.2012.01.027", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:18:11Z", "type": "Journal Article", "created": "2012-02-17", "title": "Spatial Variation Of Environmental Impacts Of Regional Biomass Chains", "description": "In this study, the spatial variation of potential environmental impacts of bioenergy crops is quantitatively assessed. The cultivation of sugar beet and Miscanthus for bioethanol production in the North of the Netherlands is used as a case study. The environmental impacts included are greenhouse gas (GHG) emissions (during lifecycle and related to direct land use change), soil quality, water quantity and quality, and biodiversity. Suitable methods are selected and adapted based on an extensive literature review. The spatial variation in environmental impacts related to the spatial heterogeneity of the physical context is assessed using Geographical Information System (GIS). The case study shows that there are large spatial variations in environmental impacts of the introduction of bioenergy crops. Land use change (LUC) to sugar beet generally causes more negative environmental impacts than LUC to Miscanthus. LUC to Miscanthus could have positive environmental impacts in some areas. The most negative environmental impacts of a shift towards sugar beet and Miscanthus occur in the western wet pasture areas. The spatially combined results of the environmental impacts illustrate that there are several trade offs between environmental impacts: there are no areas were no negative environmental impacts occur. The assessment demonstrates a framework to identify areas with potential negative environmental impacts of bioenergy crop production and areas where bioenergy crop production have little negative or even positive environmental impacts.", "keywords": ["2. Zero hunger", "certification", "0211 other engineering and technologies", "costs", "energy crop cultivation", "argentina part", "02 engineering and technology", "15. Life on land", "7. Clean energy", "13. Climate action", "water-use", "land-use", "0202 electrical engineering", " electronic engineering", " information engineering", "miscanthus", "organic-matter", "scale bioenergy production", "biodiversity"]}, "links": [{"href": "https://doi.org/10.1016/j.rser.2012.01.027"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Renewable%20and%20Sustainable%20Energy%20Reviews", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.rser.2012.01.027", "name": "item", "description": "10.1016/j.rser.2012.01.027", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.rser.2012.01.027"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-05-01T00:00:00Z"}}, {"id": "10.1016/j.rser.2012.09.002", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-26T16:18:11Z", "type": "Journal Article", "created": "2012-10-04", "title": "Harmonising Bioenergy Resource Potentials\u2014Methodological Lessons From Review Of State Of The Art Bioenergy Potential Assessments", "description": "Published estimates of the potential of bioenergy vary widely, mainly due to the heterogeneity of methodologies, assumptions and datasets employed. These discrepancies are confusing for policy and it is thus important to have scientific clarity on the basis of the assessment outcomes. Such clear insights can enable harmonisation of the different assessments. This review explores current state of the art approaches and methodologies used in bioenergy assessments, and identifies key elements that are critical determinants of bioenergy potentials. We apply the lessons learnt from the review exercise to compare and harmonise a selected set of country based bioenergy potential studies, and provide recommendations for conducting more comprehensive assessments. Depending on scenario assumptions, the harmonised technical biomass potential estimates up to 2030 in the selected countries range from 5.2 to 27.3 EJ in China, 1.1 to 18.8 EJ in India, 2.0 to 10.9 EJ in Indonesia, 1.6 to 7.0 EJ in Mozambique and 9.3 to 23.5 EJ in the US. From the review, we observed that generally, current studies do not cover all the basic (sustainability) elements expected in an ideal bioenergy assessment and there are marked differences in the level of parametric detail and methodological transparency between studies. Land availability and suitability lack spatial detail and especially degraded and marginal lands are poorly evaluated. Competition for water resources is hardly taken into account and biomass yields are based mostly on crude ecological zoning criteria. A few studies take into account improvements in management of agricultural and forestry production systems, but the underlying assumptions are hardly discussed. Competition for biomass resources among the various applications is crudely analysed in most studies and key assumptions such as demographic dynamics, biodiversity protection criteria, etc. are not explicitly discussed. To facilitate more comprehensive bioenergy assessments, we recommend an integrated analytical framework that includes all the key factors, employs high resolution geo-referenced datasets and accounts for potential feedback effects.", "keywords": ["greenhouse-gas", "spatial-distribution", "0211 other engineering and technologies", "Review", "02 engineering and technology", "7. Clean energy", "12. Responsible consumption", "11. Sustainability", "0202 electrical engineering", " electronic engineering", " information engineering", "Biomass", "SDG 15 - Life on Land", "2. Zero hunger", "Energy", "Milieukunde", "Methodology", "bio-energy", "Scheikunde", "15. Life on land", "plantation biomass resources", "carbon sequestration", "6. Clean water", "integrated approach", "sustainable bioenergy", "land-use scenarios", "13. Climate action", "climate-change", "water-use", "Potential"]}, "links": [{"href": "https://doi.org/10.1016/j.rser.2012.09.002"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Renewable%20and%20Sustainable%20Energy%20Reviews", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.rser.2012.09.002", "name": "item", "description": "10.1016/j.rser.2012.09.002", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.rser.2012.09.002"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-12-01T00:00:00Z"}}, {"id": "10.1038/s41467-017-00114-5", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:19:20Z", "type": "Journal Article", "created": "2017-07-17", "title": "Recent increases in terrestrial carbon uptake at little cost to the water cycle", "description": "Abstract

Quantifying the responses of the coupled carbon and water cycles to current global warming and rising atmospheric CO2 concentration is crucial for predicting and adapting to climate changes. Here we show that terrestrial carbon uptake (i.e. gross primary production) increased significantly from 1982 to 2011 using a combination of ground-based and remotely sensed land and atmospheric observations. Importantly, we find that the terrestrial carbon uptake increase is not accompanied by a proportional increase in water use (i.e. evapotranspiration) but is largely (about 90%) driven by increased carbon uptake per unit of water use, i.e. water use efficiency. The increased water use efficiency is positively related to rising CO2 concentration and increased canopy leaf area index, and negatively influenced by increased vapour pressure deficits. Our findings suggest that rising atmospheric CO2 concentration has caused a shift in terrestrial water economics of carbon uptake.

", "keywords": ["Atmospheric sciences", "GLOBAL-SCALE", "Climate Change and Variability Research", "02 engineering and technology", "7. Clean energy", "01 natural sciences", "Terrestrial ecosystem", "Carbon fibers", "Climate change", "Terrestrial plant", "Global and Planetary Change", "CLIMATE-CHANGE", "EVAPOTRANSPIRATION", "Evapotranspiration", "Primary production", "Ecology", "Global warming", "Q", "TRANSPIRATION", "Composite number", "Geology", "Carbon cycle", "6. Clean water", "Physical Sciences", "8. Economic growth", "DIOXIDE", "Water-use efficiency", "Composite material", "Atmospheric carbon cycle", "Science", "Carbon dioxide in Earth's atmosphere", "STOMATAL CONDUCTANCE", "0207 environmental engineering", "Article", "Environmental science", "USE EFFICIENCY", "ATMOSPHERIC CO2", "Irrigation", "Biology", "Ecosystem", "0105 earth and related environmental sciences", "Global Forest Drought Response and Climate Change", "FOS: Earth and related environmental sciences", "15. Life on land", "TRENDS", "Materials science", "Carbon dioxide", "13. Climate action", "Earth and Environmental Sciences", "FOS: Biological sciences", "Environmental Science", "Global Methane Emissions and Impacts", "VEGETATION", "Water cycle", "Climate Modeling", "Water use"]}, "links": [{"href": "https://www.nature.com/articles/s41467-017-00114-5.pdf"}, {"href": "https://doi.org/10.1038/s41467-017-00114-5"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Communications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/s41467-017-00114-5", "name": "item", "description": "10.1038/s41467-017-00114-5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41467-017-00114-5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-07-24T00:00:00Z"}}, {"id": "10.1073/pnas.1905912116", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:19:47Z", "type": "Journal Article", "created": "2019-08-06", "title": "Disentangling the role of photosynthesis and stomatal conductance on rising forest water-use efficiency", "description": "

Multiple lines of evidence suggest that plant water-use efficiency (WUE)\uffe2\uff80\uff94the ratio of carbon assimilation to water loss\uffe2\uff80\uff94has increased in recent decades. Although rising atmospheric CO 2 has been proposed as the principal cause, the underlying physiological mechanisms are still being debated, and implications for the global water cycle remain uncertain. Here, we addressed this gap using 30-y tree ring records of carbon and oxygen isotope measurements and basal area increment from 12 species in 8 North American mature temperate forests. Our goal was to separate the contributions of enhanced photosynthesis and reduced stomatal conductance to WUE trends and to assess consistency between multiple commonly used methods for estimating WUE. Our results show that tree ring-derived estimates of increases in WUE are consistent with estimates from atmospheric measurements and predictions based on an optimal balancing of carbon gains and water costs, but are lower than those based on ecosystem-scale flux observations. Although both physiological mechanisms contributed to rising WUE, enhanced photosynthesis was widespread, while reductions in stomatal conductance were modest and restricted to species that experienced moisture limitations. This finding challenges the hypothesis that rising WUE in forests is primarily the result of widespread, CO 2 -induced reductions in stomatal conductance. We present unresolved questions in plant abiotic stress biology as posed by 15 research groups with expertise spanning eco-physiology to cell and molecular biology. Common themes of these questions include the need to better understand how plants detect water availability, temperature, salinity, and rising carbon dioxide (CO2) levels; how environmental signals interface with endogenous signaling and development (e.g. circadian clock and flowering time); and how this integrated signaling controls downstream responses (e.g. stomatal regulation, proline metabolism, and growth versus defense balance). The plasma membrane comes up frequently as a site of key signaling and transport events (e.g. mechanosensing and lipid-derived signaling, aquaporins). Adaptation to water extremes and rising CO2 affects hydraulic architecture and transpiration, as well as root and shoot growth and morphology, in ways not fully understood. Environmental adaptation involves tradeoffs that limit ecological distribution and crop resilience in the face of changing and increasingly unpredictable environments. Exploration of plant diversity within and among species can help us know which of these tradeoffs represent fundamental limits and which ones can be circumvented by bringing new trait combinations together. Better defining what constitutes beneficial stress resistance in different contexts and making connections between genes and phenotypes, and between laboratory and field observations, are overarching challenges.Elevated atmospheric CO2 concentration (eCa) might reduce forest water\uffe2\uff80\uff90use, due to decreased transpiration, following partial stomatal closure, thus enhancing water\uffe2\uff80\uff90use efficiency and productivity at low water availability. If evapotranspiration (Et) is reduced, it may subsequently increase soil water storage (\uffce\uff94S) or surface runoff (R) and drainage (Dg), although these could be offset or even reversed by changes in vegetation structure, mainly increased leaf area index (L). To understand the effect of eCa in a water\uffe2\uff80\uff90limited ecosystem, we tested whether 2\uffc2\uffa0years of eCa (~40% increase) affected the hydrological partitioning in a mature water\uffe2\uff80\uff90limited Eucalyptus woodland exposed to Free\uffe2\uff80\uff90Air CO2 Enrichment (FACE). This timeframe allowed us to evaluate whether physiological effects of eCa reduced stand water\uffe2\uff80\uff90use irrespective of L, which was unaffected by eCa in this timeframe. We hypothesized that eCa would reduce tree\uffe2\uff80\uff90canopy transpiration (Etree), but excess water from reduced Etree would be lost via increased soil evaporation and understory transpiration (Efloor) with no increase in \uffce\uff94S, R or Dg. We computed Et, \uffce\uff94S, R and Dg from measurements of sapflow velocity, L, soil water content (\uffce\uffb8), understory micrometeorology, throughfall and stemflow. We found that eCa did not affect Etree, Efloor, \uffce\uff94S or \uffce\uffb8 at any depth (to 4.5\uffc2\uffa0m) over the experimental period. We closed the water balance for dry seasons with no differences in the partitioning to R and Dg between Ca levels. Soil temperature and \uffce\uffb8 were the main drivers of Efloor while vapour pressure deficit\uffe2\uff80\uff90controlled Etree, though eCa did not significantly affect any of these relationships. Our results suggest that in the short\uffe2\uff80\uff90term, eCa does not significantly affect ecosystem water\uffe2\uff80\uff90use at this site. We conclude that water\uffe2\uff80\uff90savings under eCa mediated by either direct effects on plant transpiration or by indirect effects via changes in L or soil moisture availability are unlikely in water\uffe2\uff80\uff90limited mature eucalypt woodlands.

", "keywords": ["plant-water relationships", "[SDE] Environmental Sciences", "0106 biological sciences", "0301 basic medicine", "Vapor Pressure", "[SDV]Life Sciences [q-bio]", "interception", "Forests", "01 natural sciences", "free-air CO2 enrichment", "Soil", "03 medical and health sciences", "XXXXXX - Unknown", "water-use efficiency", "0105 earth and related environmental sciences", "580", "tree water", "Eucalyptus", "Temperature", "carbon dioxide", "Water", "Plant Transpiration", "Carbon Dioxide", "15. Life on land", "Eucalyptus tereticornis", "6. Clean water", "[SDV] Life Sciences [q-bio]", "Plant Leaves", "climate change", "stomatal conductance", "13. Climate action", "[SDE]Environmental Sciences", "Seasons", "Hydrology"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.14139"}, {"href": "https://doi.org/10.1111/gcb.14139"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.14139", "name": "item", "description": "10.1111/gcb.14139", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.14139"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-04-17T00:00:00Z"}}, {"id": "10.1111/gcb.13893", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:20:36Z", "type": "Journal Article", "created": "2017-09-06", "title": "Towards physiologically meaningful water-use efficiency estimates from eddy covariance data", "description": "Abstract

Intrinsic water\uffe2\uff80\uff90use efficiency (iWUE) characterizes the physiological control on the simultaneous exchange of water and carbon dioxide in terrestrial ecosystems. Knowledge of iWUE is commonly gained from leaf\uffe2\uff80\uff90level gas exchange measurements, which are inevitably restricted in their spatial and temporal coverage. Flux measurements based on the eddy covariance (EC) technique can overcome these limitations, as they provide continuous and long\uffe2\uff80\uff90term records of carbon and water fluxes at the ecosystem scale. However, vegetation gas exchange parameters derived from EC data are subject to scale\uffe2\uff80\uff90dependent and method\uffe2\uff80\uff90specific uncertainties that compromise their ecophysiological interpretation as well as their comparability among ecosystems and across spatial scales. Here, we use estimates of canopy conductance and gross primary productivity (GPP) derived from EC data to calculate a measure of iWUE (G1, \uffe2\uff80\uff9cstomatal slope\uffe2\uff80\uff9d) at the ecosystem level at six sites comprising tropical, Mediterranean, temperate, and boreal forests. We assess the following six mechanisms potentially causing discrepancies between leaf and ecosystem\uffe2\uff80\uff90level estimates of G1: (i) non\uffe2\uff80\uff90transpirational water fluxes; (ii) aerodynamic conductance; (iii) meteorological deviations between measurement height and canopy surface; (iv) energy balance non\uffe2\uff80\uff90closure; (v) uncertainties in net ecosystem exchange partitioning; and (vi) physiological within\uffe2\uff80\uff90canopy gradients. Our results demonstrate that an unclosed energy balance caused the largest uncertainties, in particular if it was associated with erroneous latent heat flux estimates. The effect of aerodynamic conductance on G1 was sufficiently captured with a simple representation. G1 was found to be less sensitive to meteorological deviations between canopy surface and measurement height and, given that data are appropriately filtered, to non\uffe2\uff80\uff90transpirational water fluxes. Uncertainties in the derived GPP and physiological within\uffe2\uff80\uff90canopy gradients and their implications for parameter estimates at leaf and ecosystem level are discussed. Our results highlight the importance of adequately considering the sources of uncertainty outlined here when EC\uffe2\uff80\uff90derived water\uffe2\uff80\uff90use efficiency is interpreted in an ecophysiological context.

", "keywords": ["550", "ecophysiology", "Penman\u2013Monteith equation", "0207 environmental engineering", "577", "slope parameter", "02 engineering and technology", "Forests", "Models", " Biological", "01 natural sciences", "Trees", "Water Cycle", "XXXXXX - Unknown", "eddy covariance", "energy imbalance", "analysis of covariance", "0105 earth and related environmental sciences", "intrinsic water-use efficiency", "Water", "eddy flux", "Plant Transpiration", "Carbon Dioxide", "15. Life on land", "aerodynamic conductance", "water efficiency", "Carbon", "6. Clean water", "canopy gradients", "surface conductance", "Plant Leaves", "13. Climate action", "ecosystems"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.13893"}, {"href": "https://doi.org/10.1111/gcb.13893"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.13893", "name": "item", "description": "10.1111/gcb.13893", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.13893"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-10-11T00:00:00Z"}}, {"id": "10.14279/depositonce-15380", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:21:42Z", "type": "Journal Article", "created": "2022-02-24", "title": "Decoupling between ecosystem photosynthesis and transpiration: a last resort against overheating", "description": "Abstract

Ecosystems are projected to face extreme high temperatures more frequently in the near future. Various biotic coping strategies exist to prevent heat stress. Controlled experiments have recently provided evidence for continued transpiration in woody plants during high air temperatures, even when photosynthesis is inhibited. Such a decoupling of photosynthesis and transpiration would represent an effective strategy (\uffe2\uff80\uff98known as leaf or canopy cooling\uffe2\uff80\uff99) to prevent lethal leaf temperatures. At the ecosystem scale, continued transpiration might dampen the development and propagation of heat extremes despite further desiccating soils. However, at the ecosystem scale, evidence for the occurrence of this decoupling is still limited. Here, we aim to investigate this mechanism using eddy-covariance data of thirteen woody ecosystems located in Australia and a causal graph discovery algorithm. Working at half-hourly time resolution, we find evidence for a decoupling of photosynthesis and transpiration in four ecosystems which can be classified as Mediterranean woodlands. The decoupling occurred at air temperatures above 35 \uffe2\uff88\uff98C. At the nine other investigated woody sites, we found that vegetation CO2 exchange remained coupled to transpiration at the observed high air temperatures. Ecosystem characteristics suggest that the canopy energy balance plays a crucial role in determining the occurrence of a decoupling. Our results highlight the value of causal-inference approaches for the analysis of complex physiological processes. With regard to projected increasing temperatures and especially extreme events in future climates, further vegetation types might be pushed to threatening canopy temperatures. Our findings suggest that the coupling of leaf-level photosynthesis and stomatal conductance, common in land surface schemes, may need be re-examined when applied to high-temperature events.

", "keywords": ["heat wave", "570", "AUSTRALIA", "Science", "QC1-999", "UNCERTAINTY", "Environmental technology. Sanitary engineering", "01 natural sciences", "transpiration", "FLUX TOWER", "ddc:570", "GE1-350", "TOLERANCE", "TEMPERATURE", "TD1-1066", "0105 earth and related environmental sciences", "photosynthesis", "CONDUCTANCE", "Physics", "Q", "04 agricultural and veterinary sciences", "15. Life on land", "WATER-USE", "MODEL", "Environmental sciences", "13. Climate action", "Earth and Environmental Sciences", "ecosystem functioning", "PINUS-TAEDA", "0401 agriculture", " forestry", " and fisheries", "ELEVATED CO2", "570 Biowissenschaften; Biologie"]}, "links": [{"href": "https://doi.org/10.14279/depositonce-15380"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Research%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.14279/depositonce-15380", "name": "item", "description": "10.14279/depositonce-15380", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.14279/depositonce-15380"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-03-14T00:00:00Z"}}, {"id": "10.3390/agronomy10050748", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:23:17Z", "type": "Journal Article", "created": "2020-05-22", "title": "The Use of a Tomato Landrace as Rootstock Improves the Response of Commercial Tomato under Water Deficit Conditions", "description": "

Grafting onto drought tolerant rootstocks has been proposed as a useful strategy to overcome future water scarcity periods. The \uffe2\uff80\uff98de Ramellet\uffe2\uff80\uff99 tomato is a drought tolerant landrace selected under semiarid Mediterranean summer conditions under rain-fed or low irrigation. In this manuscript, the responses of a commercial hybrid \uffe2\uff80\uff98de Ramellet\uffe2\uff80\uff99 genotype grafted onto a traditional \uffe2\uff80\uff98de Ramellet\uffe2\uff80\uff99 (RL) and a commercial Maxifort (Mx) tomato rootstocks under commercial greenhouse conditions are studied. Non-grafted (NON) and self-grafted (SELF) plants were used as controls. Two water regimes were established: well-watered (WW, covering plant water demands) and water deficit (WD, reducing 50% irrigation as compared to WW). The results confirm an improvement in agronomic performance of Mx as compared to NON, but also show a similar improving effect of RL. Grafting enhanced plant growth regardless of the rootstock under WW conditions. Similarly, water-use efficiency (assessed as leaf carbon isotope composition) increased in grafted plants under WD treatment as compared to NON. Despite the lack of significant differences, RL tended to promote higher fruit production and fruit number than Mx, irrespective of the water treatment, whereas RL was the single graft combination with higher fruit production than NON under WD. In conclusion, the results uncover the potential of drought-adapted landraces to be used as rootstocks in order to increase plant growth and fruit production under both well-watered and water deficit cultivation conditions.

", "keywords": ["2. Zero hunger", "0106 biological sciences", "S", "greenhouse", "0401 agriculture", " forestry", " and fisheries", "Agriculture", "water-use efficiency", "04 agricultural and veterinary sciences", "15. Life on land", "Mediterranean landrace", "grafting", "01 natural sciences", "6. Clean water"]}, "links": [{"href": "http://www.mdpi.com/2073-4395/10/5/748/pdf"}, {"href": "https://www.mdpi.com/2073-4395/10/5/748/pdf"}, {"href": "https://doi.org/10.3390/agronomy10050748"}, {"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/agronomy10050748", "name": "item", "description": "10.3390/agronomy10050748", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/agronomy10050748"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-05-22T00:00:00Z"}}, {"id": "11585/704613", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:28:47Z", "type": "Journal Article", "created": "2019-08-06", "title": "Disentangling the role of photosynthesis and stomatal conductance on rising forest water-use efficiency", "description": "

Multiple lines of evidence suggest that plant water-use efficiency (WUE)\uffe2\uff80\uff94the ratio of carbon assimilation to water loss\uffe2\uff80\uff94has increased in recent decades. Although rising atmospheric CO 2 has been proposed as the principal cause, the underlying physiological mechanisms are still being debated, and implications for the global water cycle remain uncertain. Here, we addressed this gap using 30-y tree ring records of carbon and oxygen isotope measurements and basal area increment from 12 species in 8 North American mature temperate forests. Our goal was to separate the contributions of enhanced photosynthesis and reduced stomatal conductance to WUE trends and to assess consistency between multiple commonly used methods for estimating WUE. Our results show that tree ring-derived estimates of increases in WUE are consistent with estimates from atmospheric measurements and predictions based on an optimal balancing of carbon gains and water costs, but are lower than those based on ecosystem-scale flux observations. Although both physiological mechanisms contributed to rising WUE, enhanced photosynthesis was widespread, while reductions in stomatal conductance were modest and restricted to species that experienced moisture limitations. This finding challenges the hypothesis that rising WUE in forests is primarily the result of widespread, CO 2 -induced reductions in stomatal conductance.

Climate change will intensify water scarcity, and therefore irrigation must be adapted to save water. Operational tools that provide watering recommendations to end-users are needed. This work presents a new tool, Irrigation-Advisor (IA), which is based on weather forecasts and is able to separately determine soil evaporation and crop transpiration, and thus is adaptable to a broad range of agricultural situations. By calculating several statistical indicators, IA was tested against the FAO-56 crop evapotranspiration (ETcFAO) methodology using local crop coefficients. Additionally, IA recommendations were compared with current standard practices by experienced farmers (F). Six field experiments with four widely cultivated species (endive, lettuce, muskmelon and potato) were performed in Southeast Spain. Irrigation water applied, crop yield, aboveground biomass and water productivity were determined. Crop water needs underestimations (5%\u201320%) were detected when comparing IA against ETcFAO, although the index of agreement proved reasonable adjustments. The IA recommendations led to water savings up to 13% when compared to F, except for lettuce, with a 31% surplus in irrigation when using IA. Crop yield was not compromised and water productivity was increased by IA. Therefore, IA mimicked the farmers\u2032 irrigation strategies fairly well without deploying sensors on-site. Nevertheless, improvements are needed for increasing the accuracy of IA estimations.

", "keywords": ["Water-use efficiency", "0106 biological sciences", "2. Zero hunger", "Evapotranspiration", "2508.02 Evaporaci\u00f3n", "evapotranspiration", "Modeling", "Water use efficiency", "modeling", "15. Life on land", "F06 Irrigation", "3103.02 Hibridaci\u00f3n de Cultivos", "01 natural sciences", "Modelling", "Ingenier\u00eda del Terreno", "6. Clean water", "Weather forecasting", "weather forecasts", "Edafolog\u00eda y Qu\u00edmica Agr\u00edcola", "2511 Ciencias del Suelo (Edafolog\u00eda)", "Weather forecasts", "13. Climate action", "soil water balance", "water-use efficiency", "Soil water balance"]}, "links": [{"href": "http://www.mdpi.com/2073-4441/11/11/2245/pdf"}, {"href": "https://www.iris.unict.it/bitstream/20.500.11769/552480/2/Water%202019.pdf"}, {"href": "https://www.mdpi.com/2073-4441/11/11/2245/pdf"}, {"href": "https://doi.org/10.3390/w11112245"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/w11112245", "name": "item", "description": "10.3390/w11112245", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/w11112245"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-10-26T00:00:00Z"}}, {"id": "10.4314/wsa.v29i4.5038", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:23:56Z", "type": "Journal Article", "created": "2011-11-30", "description": "Food shortage is known to have been caused by overpopulation, natural disasters and poor food distribution. In areas facing food insecurity, such as Africa, peasants or small-scale farmers have practised intercropping since old times. In this study, an investigation was carried out to determine whether intercropping increased production for small-scale farming in a semi-arid region (Free State, South Africa). Crop productivity of maize and bean intercropping systems was evaluated in terms of crop yield and growth. The effect of radiation and water utilisation by these systems was measured to determine their productivity. Field trials were carried out during three summer crop growing seasons (plant densities, row orientation and sowing date trials. In all growing seasons, rainfall was below normal, and air temperatures were normal. The total land equivalent ratios for yield and growth ranged between 1.06 to 1.58 and 1.38 to 1.86 respectively, showing yield and growth advantage of intercropping. Concerning radiation and water use, the intercropping of maize and beans had both radiation and water use efficiencies (RUE and WUE, respectively) as high as maize sole cropping, and intercropping RUE and WUE were greater than bean sole cropping. >From these results, it has been concluded that maize-bean intercropping can be recommended to small-scale farmers in this semi-arid region. Water SA Vol.29(4): 381-388", "keywords": ["2. Zero hunger", "Intercropping; Land equivalent ratio; Phaseolus vulgari; Radiation use efficiency; Water-use efficiency; Zea mays", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water"], "contacts": [{"organization": "H.O. Ogindo, Sue Walker, Mitsuru Tsubo, E Mukhala,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.4314/wsa.v29i4.5038"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20SA", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.4314/wsa.v29i4.5038", "name": "item", "description": "10.4314/wsa.v29i4.5038", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.4314/wsa.v29i4.5038"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-08-03T00:00:00Z"}}, {"id": "10.5194/bg-16-3747-2019", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:24:18Z", "type": "Journal Article", "created": "2019-10-02", "title": "Reviews and syntheses: Turning the challenges of partitioning ecosystem evaporation and transpiration into opportunities", "description": "

Abstract. Evaporation (E) and transpiration (T) respond differently to ongoing changes in climate, atmospheric composition, and land use. It is difficult to partition ecosystem-scale evapotranspiration (ET) measurements into E and T, which makes it difficult to validate satellite data and land surface models. Here, we review current progress in partitioning E and T and provide a prospectus for how to improve theory and observations going forward. Recent advancements in analytical techniques create new opportunities for partitioning E and T at the ecosystem scale, but their assumptions have yet to be fully tested. For example, many approaches to partition E and T rely on the notion that plant canopy conductance and ecosystem water use efficiency exhibit optimal responses to atmospheric vapor pressure deficit (D). We use observations from 240 eddy covariance flux towers to demonstrate that optimal ecosystem response to D is a reasonable assumption, in agreement with recent studies, but more analysis is necessary to determine the conditions for which this assumption holds. Another critical assumption for many partitioning approaches is that ET can be approximated as T during ideal transpiring conditions, which has been challenged by observational studies. We demonstrate that T can exceed 95\uffe2\uff80\uff89% of ET from certain ecosystems, but other ecosystems do not appear to reach this value, which suggests that this assumption is ecosystem-dependent with implications for partitioning. It is important to further improve approaches for partitioning E and T, yet few multi-method comparisons have been undertaken to date. Advances in our understanding of carbon\uffe2\uff80\uff93water coupling at the stomatal, leaf, and canopy level open new perspectives on how to quantify T via its strong coupling with photosynthesis. Photosynthesis can be constrained at the ecosystem and global scales with emerging data sources including solar-induced fluorescence, carbonyl sulfide flux measurements, thermography, and more. Such comparisons would improve our mechanistic understanding of ecosystem water fluxes and provide the observations necessary to validate remote sensing algorithms and land surface models to understand the changing global water cycle.

", "keywords": ["550", "STOMATAL CONDUCTANCE", "0207 environmental engineering", "02 engineering and technology", "551", "01 natural sciences", "Life", "CARBONYL SULFIDE COS", "QH501-531", "SOIL-WATER", "QH540-549.5", "0105 earth and related environmental sciences", "QE1-996.5", "info:eu-repo/classification/ddc/550", "VAPOR-PRESSURE DEFICIT", "RAINFALL INTERCEPTION", "Ecology", "ddc:550", "Biology and Life Sciences", "Geology", "STABLE-ISOTOPE", "15. Life on land", "540", "6. Clean water", "SURFACE-ENERGY BALANCE", "Environmental sciences", "Earth sciences", "Ecology", " evolutionary biology", "13. Climate action", "Earth and Environmental Sciences", "NET PRIMARY PRODUCTIVITY", "WATER-USE EFFICIENCY", "Geosciences", "EDDY COVARIANCE DATA"]}, "links": [{"href": "https://bg.copernicus.org/articles/16/3747/2019/bg-16-3747-2019.pdf"}, {"href": "https://doi.org/10.5194/bg-16-3747-2019"}, {"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-16-3747-2019", "name": "item", "description": "10.5194/bg-16-3747-2019", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/bg-16-3747-2019"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-10-01T00:00:00Z"}}, {"id": "20.500.11769/552480", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:29:12Z", "type": "Journal Article", "created": "2019-10-28", "title": "Irrigation-Advisor\u2014A Decision Support System for Irrigation of Vegetable Crops", "description": "

Climate change will intensify water scarcity, and therefore irrigation must be adapted to save water. Operational tools that provide watering recommendations to end-users are needed. This work presents a new tool, Irrigation-Advisor (IA), which is based on weather forecasts and is able to separately determine soil evaporation and crop transpiration, and thus is adaptable to a broad range of agricultural situations. By calculating several statistical indicators, IA was tested against the FAO-56 crop evapotranspiration (ETcFAO) methodology using local crop coefficients. Additionally, IA recommendations were compared with current standard practices by experienced farmers (F). Six field experiments with four widely cultivated species (endive, lettuce, muskmelon and potato) were performed in Southeast Spain. Irrigation water applied, crop yield, aboveground biomass and water productivity were determined. Crop water needs underestimations (5%\u201320%) were detected when comparing IA against ETcFAO, although the index of agreement proved reasonable adjustments. The IA recommendations led to water savings up to 13% when compared to F, except for lettuce, with a 31% surplus in irrigation when using IA. Crop yield was not compromised and water productivity was increased by IA. Therefore, IA mimicked the farmers\u2032 irrigation strategies fairly well without deploying sensors on-site. Nevertheless, improvements are needed for increasing the accuracy of IA estimations.

", "keywords": ["Water-use efficiency", "0106 biological sciences", "evapotranspiration", "F06 Irrigation", "01 natural sciences", "Modelling", "Weather forecasting", "weather forecasts", "water-use efficiency", "Soil water balance", "2. Zero hunger", "Evapotranspiration", "2508.02 Evaporaci\u00f3n", "Modeling", "Water use efficiency", "modeling", "15. Life on land", "3103.02 Hibridaci\u00f3n de Cultivos", "Ingenier\u00eda del Terreno", "6. Clean water", "Edafolog\u00eda y Qu\u00edmica Agr\u00edcola", "2511 Ciencias del Suelo (Edafolog\u00eda)", "Weather forecasts", "13. Climate action", "soil water balance"]}, "links": [{"href": "http://www.mdpi.com/2073-4441/11/11/2245/pdf"}, {"href": "https://www.iris.unict.it/bitstream/20.500.11769/552480/2/Water%202019.pdf"}, {"href": "https://www.mdpi.com/2073-4441/11/11/2245/pdf"}, {"href": "https://doi.org/20.500.11769/552480"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "20.500.11769/552480", "name": "item", "description": "20.500.11769/552480", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/20.500.11769/552480"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-10-26T00:00:00Z"}}, {"id": "2440/137248", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-06-26T16:29:39Z", "type": "Journal Article", "created": "2022-08-26", "title": "Burning questions for a warming and changing world: 15 unknowns in plant abiotic stress", "description": "Abstract

We present unresolved questions in plant abiotic stress biology as posed by 15 research groups with expertise spanning eco-physiology to cell and molecular biology. Common themes of these questions include the need to better understand how plants detect water availability, temperature, salinity, and rising carbon dioxide (CO2) levels; how environmental signals interface with endogenous signaling and development (e.g. circadian clock and flowering time); and how this integrated signaling controls downstream responses (e.g. stomatal regulation, proline metabolism, and growth versus defense balance). The plasma membrane comes up frequently as a site of key signaling and transport events (e.g. mechanosensing and lipid-derived signaling, aquaporins). Adaptation to water extremes and rising CO2 affects hydraulic architecture and transpiration, as well as root and shoot growth and morphology, in ways not fully understood. Environmental adaptation involves tradeoffs that limit ecological distribution and crop resilience in the face of changing and increasingly unpredictable environments. Exploration of plant diversity within and among species can help us know which of these tradeoffs represent fundamental limits and which ones can be circumvented by bringing new trait combinations together. Better defining what constitutes beneficial stress resistance in different contexts and making connections between genes and phenotypes, and between laboratory and field observations, are overarching challenges.