{"type": "FeatureCollection", "features": [{"id": "10.1016/j.agee.2005.10.013", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:15:07Z", "type": "Journal Article", "created": "2005-12-22", "title": "Fluxes Of Nitrous Oxide And Methane, And Nitrogen Leaching From Organically And Conventionally Cultivated Sandy Soil In Western Finland", "description": "Abstract Organic farming is considered to be environmentally beneficial partly due to the ban on synthetic fertilisers and pesticides, but there are few studies including direct measurements on the environmental impact of organic farming compared with the conventional system. In this study, greenhouse gas emissions and nitrogen leaching were compared in three different farming systems in western Finland. Two of them consisted of grass production and livestock raising, and were managed either organically (OF) or conventionally (CF). The third farming system was conventionally managed cereal production without livestock (CEF). Greenhouse gas (CH 4 and N 2 O) fluxes, nitrogen leaching and soil mineral nitrogen concentrations were measured for 1 year from three replicate plots of each farming system. The annual flux of nitrous oxide (N 2 O) was 1.4\u00a0kg\u00a0N\u00a0ha \u22121 in OF, 1.2\u00a0kg\u00a0N\u00a0ha \u22121 in CF, and 3.5\u00a0kg\u00a0N\u00a0ha \u22121 in CEF. Annual methane (CH 4 ) oxidation ranged between \u22120.72 and \u22120.44\u00a0kg\u00a0CH 4 \u00a0ha \u22121 in the three treatments. In the case of OF and CF nitrogen losses to water were larger than gaseous losses as N 2 O but in CEF they were equal. Of the N added as mineral fertiliser and cattle slurry to the CF fields, 1.6% was lost by leaching, while 0.7% was lost to the atmosphere as N 2 O. In CEF, the respective percentages were 3.0% for N leaching and 3.2% for N lost to the air. The environmental advantages of organic compared with conventional farming systems were not confirmed in this study.", "keywords": ["2. Zero hunger", "570", "kasvihuonekaasut", "13. Climate action", "luomutuotanto", "0401 agriculture", " forestry", " and fisheries", "Ka", "dityppioksidi", "04 agricultural and veterinary sciences", "15. Life on land", "metaani", "typen huuhtoutuminen"], "contacts": [{"organization": "Syv\u00e4salo, Eija, Regina, Kristiina, Turtola, Eila, Lemola, Riitta, Esala, Martti,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2005.10.013"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agriculture%2C%20Ecosystems%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agee.2005.10.013", "name": "item", "description": "10.1016/j.agee.2005.10.013", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2005.10.013"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-04-01T00:00:00Z"}}, {"id": "10.1007/s11104-024-06756-x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:14:53Z", "type": "Journal Article", "created": "2024-06-01", "title": "CH4 transport in wetland plants under controlled environmental conditions \u2013 separating the impacts of phenology from environmental variables", "description": "Abstract Background and Aims

Methane (CH4) fluxes at peatland plant surfaces are net results of transport of soil-produced CH4 and within-plant CH4 production and consumption, yet factors and processes controlling these fluxes remain unclear. We aimed to assess the effects of seasonality, environmental variables, and CH4 cycling microbes on CH4 fluxes from characteristic fen species.

Methods

Four species (Carex rostrata, Menyanthes trifoliata, Betula nana, Salix lapponum) were selected, and their CH4 fluxes determined in climate-controlled environments with three mesocosms per growing season per species. Microbial genes for CH4 cycling were analysed to check the potential for within-plant CH4 production and oxidation. Two extra experiments were conducted: removal of C. rostrata leaves to identify how leaves constrain CH4 transport, and a labelling experiment with S. lapponum to distinguish between plant-produced and soil-produced CH4 in the plant flux.

Results

All species showed seasonal variability in CH4 fluxes. Higher porewater CH4 concentration increased fluxes from C. rostrata and M. trifoliata, decreased fluxes from S. lapponum, and did not affect fluxes from B. nana. Air temperature only and negatively affected CH4 flux from C. rostrata. Light level did not impact CH4 fluxes. Both methanogens and methanotrophs were detected in shoots of S. lapponum and M. trifoliata, methanotrophs in B. nana, and neither in C. rostrata.

Conclusion

Our study demonstrates that the seasonal phase of the plants regulates the CH4 fluxes they mediate across species. The detection of methanogens and methanotrophs in herbs and shrubs suggests that microbial processes may contribute to their CH4 fluxes.

", "keywords": ["0301 basic medicine", "570", "0303 health sciences", "metanotrofit", "varvut", "Herbs", "11831 Plant biology", "metaani", "Environmental sciences", "Controlled environments", "Microbes", "03 medical and health sciences", "Phenology", "suot", "Plant-mediated CH fluxes", "suokasvillisuus", "Shrubs", "metanogeenit", "sarat"]}, "links": [{"href": "https://doi.org/10.1007/s11104-024-06756-x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-024-06756-x", "name": "item", "description": "10.1007/s11104-024-06756-x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-024-06756-x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-01T00:00:00Z"}}, {"id": "10.1016/j.agee.2010.12.005", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-07-26T16:15:10Z", "type": "Journal Article", "created": "2011-01-14", "title": "Biochar Addition To Agricultural Soil Increased Ch4 Uptake And Water Holding Capacity - Results From A Short-Term Pilot Field Study", "description": "Abstract Biochar addition to agricultural soil has been suggested to mitigate climate change through increased biogenic carbon storage and reduction of greenhouse gas emissions. We measured the fluxes of N 2 O, CO 2 , and CH 4 after adding 9\u00a0t\u00a0ha \u22121 biochar on an agricultural soil in Southern Finland in May 2009. We conducted these measurements twice a week for 1.5 months, between sowing and canopy closure, to capture the period of highest N 2 O emissions, where the potential for mitigation would also be highest. Biochar addition increased CH 4 uptake (96% increase in the average cumulative CH 4 uptake), but no statistically significant differences were observed in the CO 2 and N 2 O emissions between the biochar amended and control plots. Added biochar increased soil water holding capacity by 11%. Further studies are needed to clarify whether this may help balance fluctuations in water availability to plants in the future climate with more frequent drought periods.", "keywords": ["2. Zero hunger", "maaper\u00e4", "biohiili", "climatic change", "ilmastonmuutoksen hillint\u00e4", "330", "04 agricultural and veterinary sciences", "ilmastonmuutokset", "15. Life on land", "metaani", "630", "6. Clean water", "soil", "kasvihuonekaasut", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Ka", "musta hiili"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2010.12.005"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agriculture%2C%20Ecosystems%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agee.2010.12.005", "name": "item", "description": "10.1016/j.agee.2010.12.005", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2010.12.005"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-01-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2006.03.055", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:15:49Z", "type": "Journal Article", "created": "2006-08-07", "title": "Fluxes Of N2o, Ch4 And Co2 In A Meadow Ecosystem Exposed To Elevated Ozone And Carbon Dioxide For Three Years", "description": "Open-top chambers (OTCs) were used to evaluate the effects of moderately elevated O3 (40-50 ppb) and CO2 (+100 ppm) and their combination on N2O, CH4 and CO2 fluxes from ground-planted meadow mesocosms. Bimonthly measurements in 2002-2004 showed that the daily fluxes of N2O, CH4 and CO2 reacted mainly to elevated O3, while the fluxes of CO2 also responded to elevated CO2. However, the fluxes did not show any marked response when elevated O3 and CO2 were combined. N2O and CO2 emissions were best explained by soil water content and air and soil temperatures, and they were not clearly associated with potential nitrification and denitrification. Our results suggest that the increasing O3 and/or CO2 concentrations may affect the N2O, CH4 and CO2 fluxes from the soil, but longer study periods are needed to verify the actual consequences of climate change for greenhouse gas emissions.", "keywords": ["hiilidioksidi", "570", "Climate", "elevated carbon dioxide", "Nitrous Oxide", "elevated ozone", "Poaceae", "metaani", "01 natural sciences", "niityt", "open-top chambers", "kohotettu otsonipitoisuus", "typen oksidit", "Magnoliopsida", "Oxidants", " Photochemical", "Ozone", "greenhouse gases", "Soil Pollutants", "otsoni", "Weather", "Ecosystem", "0105 earth and related environmental sciences", "Air Pollutants", "Fabaceae", "Environmental Exposure", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "004", "kasvihuonekaasut", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "avoin kammio", "Environmental Pollutants", "Ka", "Seasons", "kohotettu hiilidioksidipitoisuus", "Methane", "meadows"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2006.03.055"}, {"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.2006.03.055", "name": "item", "description": "10.1016/j.envpol.2006.03.055", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2006.03.055"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-02-01T00:00:00Z"}}, {"id": "10.1016/j.foreco.2006.09.039", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-07-26T16:15:59Z", "type": "Journal Article", "created": "2006-11-04", "title": "Greenhouse Gas Fluxes Of Coniferous Forest Floors As Affected By Wood Ash Addition", "description": "Abstract Wood ash has been used to alleviate nutrient deficiencies of peat forests and to combat acidification of forest soils. Ash may change the activities of soil microbes, including those producing or consuming greenhouse gases, such as methane (CH4), nitrous oxide (N2O) and carbon dioxide (CO2). We studied the effects of wood ash (loose wood ash originating from pulp mill or power plants) on the fluxes of CH4, N2O and CO2 in forests with mineral or peat soils in northern Finland. The ash doses were from 3 to 8\u00a0t\u00a0ha\u22121. Gas fluxes were measured with a closed chamber method from five recently fertilized experiments for 1 year after application of ash and from five long-term trials 14\u201350 years after application. Wood ash did not affect N2O gas fluxes. In the long-term experiments, wood ash increased the soil CO2 production and the CH4 uptake and lowered the CH4 emissions.", "keywords": ["hiilidioksidi", "kasvihuonekaasut", "13. Climate action", "tuhkalannoitus", "0401 agriculture", " forestry", " and fisheries", "typpidioksidi", "04 agricultural and veterinary sciences", "15. Life on land", "metaani", "01 natural sciences", "turvemaa", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Maljanen, M., Nyk\u00e4nen, H., Moilanen, M., Martikainen, P.J.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2006.09.039"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Forest%20Ecology%20and%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.foreco.2006.09.039", "name": "item", "description": "10.1016/j.foreco.2006.09.039", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2006.09.039"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-12-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2023.169662", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:16:37Z", "type": "Journal Article", "created": "2023-12-28", "title": "Plant-mediated CH4 exchange in wetlands: A review of mechanisms and measurement methods with implications for modelling", "description": "Plant-mediated CH4 transport (PMT) is the dominant pathway through which soil-produced CH4 can escape into the atmosphere and thus plays an important role in controlling ecosystem CH4 emission. PMT is affected by abiotic and biotic factors simultaneously, and the effects of biotic factors, such as the dominant plant species and their traits, can override the effects of abiotic factors. Increasing evidence shows that plant-mediated CH4 fluxes include not only PMT, but also within-plant CH4 production and oxidation due to the detection of methanogens and methanotrophs attached to the shoots. Despite the inter-species and seasonal differences, and the probable contribution of within-plant microbes to total plant-mediated CH4 exchange (PME), current process-based ecosystem models only estimate PMT based on the bulk biomass or leaf area index of aerenchymatous plants. We highlight five knowledge gaps to which more research efforts should be devoted. First, large between-species variation, even within the same family, complicates general estimation of PMT, and calls for further work on the key dominant species in different types of wetlands. Second, the interface (rhizosphere-root, root-shoot, or leaf-atmosphere) and plant traits controlling PMT remain poorly documented, but would be required for generalizations from species to relevant functional groups. Third, the main environmental controls of PMT across species remain uncertain. Fourth, the role of within-plant CH4 production and oxidation is poorly quantified. Fifth, the simplistic description of PMT in current process models results in uncertainty and potentially high errors in predictions of the ecosystem CH4 flux. Our review suggest that flux measurements should be conducted over multiple growing seasons and be paired with trait assessment and microbial analysis, and that trait-based models should be developed. Only then we are capable to accurately estimate plant-mediated CH4 emissions, and eventually ecosystem total CH4 emissions at both regional and global scales.", "keywords": ["Drivers", "330", "Plants", "Carbon Dioxide", "metaani", "Modelling", "Processes", "Soil", "Wetland plants", "Wetlands", "Mechanisms", "suot", "suokasvillisuus", "Plant CH4 transport", "Biomass", "Methane", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2023.169662"}, {"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.2023.169662", "name": "item", "description": "10.1016/j.scitotenv.2023.169662", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2023.169662"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-03-01T00:00:00Z"}}, {"id": "10.1016/j.still.2010.05.009", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:16:58Z", "type": "Journal Article", "created": "2010-06-24", "title": "Greenhouse Gas Fluxes In Varying Soils Types Under Conventional And No-Tillage Practices", "description": "Abstract Consideration of the environmental effects of the no-tillage practice should be made on the basis of its effects on both carbon and nitrogen cycles. There is a lack of data on the effects of the no-till management in the cool and humid climate and typical soil types of Northern Europe. We measured the fluxes of nitrous oxide (N2O), carbon dioxide (CO2) and methane (CH4) on conventionally ploughed agricultural soils and on respective soils that had been under no-till practice for 5\u20137 years. Ten chamber measurement investigations were carried out during a 10-month period on six pairs of tilled and no-till fields on clayey (Vertic Cambisols, three pairs), coarse (Eutric Regosols, two pairs), and organic (Dystric Histosols, one pair) soils located between latitudes 60\u00b0 and 62\u00b0 N. The results suggest that there is a risk of increased N2O emissions in the first years of no-till practice under small grain spring cereal cultivation in Northern European boreal climate. Carbon dioxide emissions measured as total ecosystem respiration were either unchanged, increased or decreased under no-till. Fluxes of CH4 were negligible and not affected by no-till practice. Dry bulk density and soil moisture were higher in no-till soils compared to annually mouldboard ploughed soils. Variation in the greenhouse gas fluxes was best explained by the content of carbon and nitrogen in the topsoil of 0\u201320\u00a0cm.", "keywords": ["suorakylv\u00f6", "hiilidioksidi", "2. Zero hunger", "maaper\u00e4", "methane", "carbon dioxide", "610", "dityppioksidi", "04 agricultural and veterinary sciences", "15. Life on land", "metaani", "ploughing", "soil", "12. Responsible consumption", "kasvihuonekaasut", "kynt\u00f6", "minimum tillage", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Ka"]}, "links": [{"href": "https://doi.org/10.1016/j.still.2010.05.009"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2010.05.009", "name": "item", "description": "10.1016/j.still.2010.05.009", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2010.05.009"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-08-01T00:00:00Z"}}, {"id": "10.1046/j.1365-2427.2003.01023.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:17:42Z", "type": "Journal Article", "created": "2003-03-11", "title": "Greenhouse Gas Dynamics In Boreal, Littoral Sediments Under Raised Co2 And Nitrogen Supply", "description": "

SUMMARY 1. The effects of increasing CO2 and nitrogen loading and of a change in water table and temperature on littoral CH4, N2O and CO2 fluxes were studied in a glasshouse experiment with intact sediment cores including vegetation (mainly sedges), taken from a boreal eutrophic lake in Finland. Sediments with the water table held at a level of 0 or at \uffe2\uff88\uff9215\uffe2\uff80\uff83cm were incubated in an atmosphere of 360 or 720\uffe2\uff80\uff83p.p.m. CO2 for 18\uffe2\uff80\uff83weeks. The experiment included fertilisation with NO3\uffe2\uff80\uff93 and NH4+ (to a total 3\uffe2\uff80\uff83g\uffe2\uff80\uff83N\uffe2\uff80\uff83m\uffe2\uff88\uff922).

2. Changes in the water table and temperature strongly regulated sediment CH4 and cCO2 fluxes (community CO2 release), but did not affect N2O emissions. Increase in the water table increased CH4 emissions but reduced cCO2 release, while increase in temperature increased emissions of both CO2 and CH4.

3. The raised CO2 increased carbon turnover in the sediments, such that cCO2 release was increased by 16\uffe2\uff80\uff9326%. However, CH4 fluxes were not significantly affected by raised CO2, although CH4 production potential (at 22\uffe2\uff80\uff83\uffc2\uffb0C) of the sediments incubated at high CO2 was increased. In the boreal region, littoral CH4 production is more likely to be limited by temperature than by the availability of carbon. Raised CO2 did not affect N2O production by denitrification, indicating that this process was not carbon limited.

4. A low availability of NO3\uffe2\uff80\uff93 did severely limit N2O production. The NO3\uffe2\uff80\uff93 addition caused up to a 100\uffe2\uff80\uff90fold increase in the fluxes of N2O. The NH4+ addition did not increase N2O fluxes, indicating low nitrification capacity in the sediments.

", "keywords": ["ammonium", "hiilidioksidi", "typpioksiduuli", "13. Climate action", "nitraatit", "15. Life on land", "metaani", "01 natural sciences", "6. Clean water", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1046/j.1365-2427.2003.01023.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Freshwater%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1046/j.1365-2427.2003.01023.x", "name": "item", "description": "10.1046/j.1365-2427.2003.01023.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1046/j.1365-2427.2003.01023.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2003-02-13T00:00:00Z"}}, {"id": "10.1111/j.1600-0889.2007.00304.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:18:52Z", "type": "Journal Article", "created": "2012-12-17", "title": "Fluxes And Production Of N2o, Co2 And Ch4 In Boreal Agricultural Soil During Winter As Affected By Snow Cover", "description": "Agricultural soils are important source of atmospheric nitrous oxide (N2O) and a considerable part of annual N2O release occurs during the cold season in the boreal region. According to recent studies N2O can be produced in soils at low temperatures, below 0 \u00b0C. We studied if removal of the snowcover lowers soil temperatures and whether this would affect flux rates of N2O, carbon dioxide (CO2) and methane (CH4) from an agricultural soil in eastern Finland. Gas flux rates and concentrations in soil were measured from study plots with undisturbed snow cover and from plots with snow removed. This experiment simulates changes in the soil thermal conditions with less snowfall. Plots without snow had even 15 \u00b0C lower temperature at the depth of 5 cm and they had higher N2O emissions during soil freezing and thawing. However, there were only minor changes in CH4 or CO2 flux rates after removal of snow over the cold season. N2O and CO2 accumulated in the soil during winter and were then released rapidly during thawing in spring. CH4 concentrations in the soil remained lower than the atmospheric levels during winter and subsequently increased to the ambient levels after thawing. Future climate scenarios suggest possible decline in snowfall in northern Europe resulting in lower soil temperatures. This could lead to higher N2O emissions from boreal agricultural soils.DOI: 10.1111/j.1600-0889.2007.00304.x", "keywords": ["hiilidioksidi", "2. Zero hunger", "ilokaasu", "nitrous oxide", "methane", "0207 environmental engineering", "carbon dioxide", "snow cover", "04 agricultural and veterinary sciences", "02 engineering and technology", "15. Life on land", "maatalousmaa", "metaani", "01 natural sciences", "630", "kasvihuonekaasut", "13. Climate action", "greenhouse gases", "0401 agriculture", " forestry", " and fisheries", "agricultural soils", "lumipeite", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1111/j.1600-0889.2007.00304.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Tellus%20B", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1600-0889.2007.00304.x", "name": "item", "description": "10.1111/j.1600-0889.2007.00304.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1600-0889.2007.00304.x"}, {"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": "10.1111/nph.17365", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:18:57Z", "type": "Journal Article", "created": "2021-03-29", "title": "New insight to the role of microbes in the methane exchange in trees: evidence from metagenomic sequencing", "description": "Summary

Methane (CH4) exchange in tree stems and canopies and the processes involved are among the least understood components of the global CH4 cycle. Recent studies have focused on quantifying tree stems as sources of CH4 and understanding abiotic CH4 emissions in plant canopies, with the role of microbial in situ CH4 formation receiving less attention. Moreover, despite initial reports revealing CH4 consumption, studies have not adequately evaluated the potential of microbial CH4 oxidation within trees. In this paper, we discuss the current level of understanding on these processes. Further, we demonstrate the potential of novel metagenomic tools in revealing the involvement of microbes in the CH4 exchange of plants, and particularly in boreal trees. We detected CH4\uffe2\uff80\uff90producing methanogens and novel monooxygenases, potentially involved in CH4 consumption, in coniferous plants. In addition, our field flux measurements from Norway spruce (Picea abies) canopies demonstrate both net CH4 emissions and uptake, giving further evidence that both production and consumption are relevant to the net CH4 exchange. Our findings, together with the emerging diversity of novel CH4\uffe2\uff80\uff90producing microbial groups, strongly suggest microbial analyses should be integrated in the studies aiming to reveal the processes and drivers behind plant CH4 exchange.

", "keywords": ["0301 basic medicine", "330", "ta1172", "metaani", "bakteerit", "Trees", "03 medical and health sciences", "boreal forests", "Ymp\u00e4rist\u00f6tiede", "2. Zero hunger", "0303 health sciences", "Norway", "ta1183", "kasvifysiologia", "puut (kasvit)", "genomiikka", "15. Life on land", "ta4112", "methanogenic archaea", "mets\u00e4t", "plant microbiome", "tree", "methane exchange", "boreaalinen vy\u00f6hyke", "mikrobisto", "13. Climate action", "Environmental Science", "aineiden kierto", "Metagenomics", "methanotrophic bacteria", "arkeonit", "Methane", "captured metagenomics"]}, "links": [{"href": "https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.17365"}, {"href": "https://doi.org/10.1111/nph.17365"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/New%20Phytologist", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/nph.17365", "name": "item", "description": "10.1111/nph.17365", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/nph.17365"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-05-02T00:00:00Z"}}, {"id": "10.1111/nph.18798", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:18:57Z", "type": "Journal Article", "created": "2023-02-08", "title": "Plant phenology and species\u2010specific traits control plant CH4 emissions in a northern boreal fen", "description": "Summary

Aerenchymatic transport is an important mechanism through which plants affect methane (CH4) emissions from peatlands. Controlling environmental factors and the effects of plant phenology remain, however, uncertain.

We identified factors controlling seasonal CH4 flux rate and investigated transport efficiency (flux rate per unit of rhizospheric porewater CH4 concentration). We measured CH4 fluxes through individual shoots of Carex rostrata, Menyanthes trifoliata, Betula nana and Salix lapponum throughout growing seasons in 2020 and 2021 and Equisetum fluviatile and Comarum palustre in high summer 2021 along with water\uffe2\uff80\uff90table level, peat temperature and porewater CH4 concentration.

CH4 flux rate of C. rostrata was related to plant phenology and peat temperature. Flux rates of M. trifoliata and shrubs B. nana and S. lapponum were insensitive to the investigated environmental variables. In high summer, flux rate and efficiency were highest for C. rostrata (6.86\uffe2\uff80\uff89mg\uffe2\uff80\uff89m\uffe2\uff88\uff922\uffc2\uffa0h\uffe2\uff88\uff921 and 0.36\uffe2\uff80\uff89mg\uffe2\uff80\uff89m\uffe2\uff88\uff922\uffc2\uffa0h\uffe2\uff88\uff921 (\uffce\uffbcmol\uffe2\uff80\uff89l\uffe2\uff88\uff921)\uffe2\uff88\uff921, respectively). Menyanthes trifoliata showed a high flux rate, but limited efficiency. Low flux rates and efficiency were detected for the remaining species.

Knowledge of the species\uffe2\uff80\uff90specific CH4 flux rate and their different responses to plant phenology and environmental factors can significantly improve the estimation of ecosystem\uffe2\uff80\uff90scale CH4 dynamics in boreal peatlands.

Aerenchymatic transport is an important mechanism through which plants affect methane (CH4) emissions from peatlands. Controlling environmental factors and the effects of plant phenology remain, however, uncertain.

We identified factors controlling seasonal CH4 flux rate and investigated transport efficiency (flux rate per unit of rhizospheric porewater CH4 concentration). We measured CH4 fluxes through individual shoots of Carex rostrata, Menyanthes trifoliata, Betula nana and Salix lapponum throughout growing seasons in 2020 and 2021 and Equisetum fluviatile and Comarum palustre in high summer 2021 along with water\uffe2\uff80\uff90table level, peat temperature and porewater CH4 concentration.

CH4 flux rate of C. rostrata was related to plant phenology and peat temperature. Flux rates of M. trifoliata and shrubs B. nana and S. lapponum were insensitive to the investigated environmental variables. In high summer, flux rate and efficiency were highest for C. rostrata (6.86\uffe2\uff80\uff89mg\uffe2\uff80\uff89m\uffe2\uff88\uff922\uffc2\uffa0h\uffe2\uff88\uff921 and 0.36\uffe2\uff80\uff89mg\uffe2\uff80\uff89m\uffe2\uff88\uff922\uffc2\uffa0h\uffe2\uff88\uff921 (\uffce\uffbcmol\uffe2\uff80\uff89l\uffe2\uff88\uff921)\uffe2\uff88\uff921, respectively). Menyanthes trifoliata showed a high flux rate, but limited efficiency. Low flux rates and efficiency were detected for the remaining species.

Knowledge of the species\uffe2\uff80\uff90specific CH4 flux rate and their different responses to plant phenology and environmental factors can significantly improve the estimation of ecosystem\uffe2\uff80\uff90scale CH4 dynamics in boreal peatlands.

Methane (CH4) fluxes at peatland plant surfaces are net results of transport of soil-produced CH4 and within-plant CH4 production and consumption, yet factors and processes controlling these fluxes remain unclear. We aimed to assess the effects of seasonality, environmental variables, and CH4 cycling microbes on CH4 fluxes from characteristic fen species.

Methods

Four species (Carex rostrata, Menyanthes trifoliata, Betula nana, Salix lapponum) were selected, and their CH4 fluxes determined in climate-controlled environments with three mesocosms per growing season per species. Microbial genes for CH4 cycling were analysed to check the potential for within-plant CH4 production and oxidation. Two extra experiments were conducted: removal of C. rostrata leaves to identify how leaves constrain CH4 transport, and a labelling experiment with S. lapponum to distinguish between plant-produced and soil-produced CH4 in the plant flux.

Results

All species showed seasonal variability in CH4 fluxes. Higher porewater CH4 concentration increased fluxes from C. rostrata and M. trifoliata, decreased fluxes from S. lapponum, and did not affect fluxes from B. nana. Air temperature only and negatively affected CH4 flux from C. rostrata. Light level did not impact CH4 fluxes. Both methanogens and methanotrophs were detected in shoots of S. lapponum and M. trifoliata, methanotrophs in B. nana, and neither in C. rostrata.

Conclusion

Our study demonstrates that the seasonal phase of the plants regulates the CH4 fluxes they mediate across species. The detection of methanogens and methanotrophs in herbs and shrubs suggests that microbial processes may contribute to their CH4 fluxes.

", "keywords": ["0301 basic medicine", "570", "0303 health sciences", "metanotrofit", "varvut", "Herbs", "11831 Plant biology", "metaani", "Environmental sciences", "Controlled environments", "Microbes", "03 medical and health sciences", "Phenology", "suot", "Plant-mediated CH fluxes", "suokasvillisuus", "Shrubs", "metanogeenit", "sarat"]}, "links": [{"href": "https://doi.org/10138/577327"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10138/577327", "name": "item", "description": "10138/577327", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10138/577327"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-01T00:00:00Z"}}, {"id": "38159777", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-26T16:26:30Z", "type": "Journal Article", "created": "2023-12-28", "title": "Plant-mediated CH4 exchange in wetlands: A review of mechanisms and measurement methods with implications for modelling", "description": "Plant-mediated CH4 transport (PMT) is the dominant pathway through which soil-produced CH4 can escape into the atmosphere and thus plays an important role in controlling ecosystem CH4 emission. PMT is affected by abiotic and biotic factors simultaneously, and the effects of biotic factors, such as the dominant plant species and their traits, can override the effects of abiotic factors. Increasing evidence shows that plant-mediated CH4 fluxes include not only PMT, but also within-plant CH4 production and oxidation due to the detection of methanogens and methanotrophs attached to the shoots. Despite the inter-species and seasonal differences, and the probable contribution of within-plant microbes to total plant-mediated CH4 exchange (PME), current process-based ecosystem models only estimate PMT based on the bulk biomass or leaf area index of aerenchymatous plants. We highlight five knowledge gaps to which more research efforts should be devoted. First, large between-species variation, even within the same family, complicates general estimation of PMT, and calls for further work on the key dominant species in different types of wetlands. Second, the interface (rhizosphere-root, root-shoot, or leaf-atmosphere) and plant traits controlling PMT remain poorly documented, but would be required for generalizations from species to relevant functional groups. Third, the main environmental controls of PMT across species remain uncertain. Fourth, the role of within-plant CH4 production and oxidation is poorly quantified. Fifth, the simplistic description of PMT in current process models results in uncertainty and potentially high errors in predictions of the ecosystem CH4 flux. Our review suggest that flux measurements should be conducted over multiple growing seasons and be paired with trait assessment and microbial analysis, and that trait-based models should be developed. Only then we are capable to accurately estimate plant-mediated CH4 emissions, and eventually ecosystem total CH4 emissions at both regional and global scales.", "keywords": ["Drivers", "330", "Plants", "Carbon Dioxide", "metaani", "Modelling", "Processes", "Soil", "Wetland plants", "Wetlands", "Mechanisms", "suot", "suokasvillisuus", "Plant CH4 transport", "Biomass", "Methane", "Ecosystem"]}, "links": [{"href": "https://doi.org/38159777"}, {"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": "38159777", "name": "item", "description": "38159777", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/38159777"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-03-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=metaani&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=metaani&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=metaani&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=metaani&offset=14", "hreflang": "en-US"}], "numberMatched": 14, "numberReturned": 14, "distributedFeatures": [], "timeStamp": "2026-07-27T02:14:09.230723Z"}