Atmospheric iron (Fe) deposition to the open ocean affects net primary productivity, nitrogen fixation, and carbon uptake. We investigate changes in soluble Fe (SFe) deposition from the pre\uffe2\uff80\uff90industrial period to the late 21st century using the EC\uffe2\uff80\uff90Earth3\uffe2\uff80\uff90Iron Earth System model. EC\uffe2\uff80\uff90Earth3\uffe2\uff80\uff90Iron considers various sources of Fe, including dust, fossil fuel combustion, and biomass burning, and features comprehensive atmospheric chemistry, representing atmospheric oxalate, sulfate, and Fe cycles. We show that anthropogenic activity has changed the magnitude and spatial distribution of SFe deposition by increasing combustion Fe emissions and atmospheric acidity and oxalate levels. We report that SFe deposition has doubled since the early industrial era, using the Coupled Model Intercomparison Project Phase 6 emission inventory. We highlight acidity as the main solubilization pathway for dust\uffe2\uff80\uff90Fe and oxalate\uffe2\uff80\uff90promoted processing for the solubilization of combustion\uffe2\uff80\uff90Fe. We project a global SFe deposition increase of 40% by the late 21st century relative to present day under Shared Socioeconomic Pathway (SSP) 3\uffe2\uff80\uff937.0, which assumes weak climate change mitigation policies. Conversely, SSPs with stronger mitigation pathways (1\uffe2\uff80\uff932.6 and 2\uffe2\uff80\uff934.5) result in 35% and 10% global decreases, respectively. Despite these differences, SFe deposition increases over the equatorial Pacific and decreases in the Southern Ocean (SO) for all SSPs. We further observe that deposition over the equatorial Pacific and SO are highly sensitive to future changes in dust emissions from Australia and South America, as well as from North Africa. Future studies should focus on the potential impact of climate\uffe2\uff80\uff90 and human\uffe2\uff80\uff90induced changes in dust and wildfires combined.Diminishing prospects for environmental preservation under climate change are intensifying efforts to boost capture, storage and sequestration (long-term burial) of carbon. However, as Earth\uffe2\uff80\uff99s biological carbon sinks also shrink, remediation has become a key part of the narrative for terrestrial ecosystems. In contrast, blue carbon on polar continental shelves have stronger pathways to sequestration and have increased with climate-forced marine ice losses\uffe2\uff80\uff94becoming the largest known natural negative feedback on climate change. Here we explore the size and complex dynamics of blue carbon gains with spatiotemporal changes in sea ice (60\uffe2\uff80\uff93100 MtCyear\uffe2\uff88\uff921), ice shelves (4\uffe2\uff80\uff9340 MtCyear\uffe2\uff88\uff921\uffe2\uff80\uff89=\uffe2\uff80\uff89giant iceberg generation) and glacier retreat (<\uffe2\uff80\uff891 MtCyear\uffe2\uff88\uff921). Estimates suggest that, amongst these, reduced duration of seasonal sea ice is most important. Decreasing sea ice extent drives longer (not necessarily larger biomass) smaller cell-sized phytoplankton blooms, increasing growth of many primary consumers and benthic carbon storage\uffe2\uff80\uff94where sequestration chances are maximal. However, sea ice losses also create positive feedbacks in shallow waters through increased iceberg movement and scouring of benthos. Unlike loss of sea ice, which enhances existing sinks, ice shelf losses generate brand new carbon sinks both where giant icebergs were, and in their wake. These also generate small positive feedbacks from scouring, minimised by repeat scouring at biodiversity hotspots. Blue carbon change from glacier retreat has been least well quantified, and although emerging fjords are small areas, they have high storage-sequestration conversion efficiencies, whilst blue carbon in polar waters faces many diverse and complex stressors. The identity of these are known (e.g. fishing, warming, ocean acidification, non-indigenous species and plastic pollution) but not their magnitude of impact. In order to mediate multiple stressors, research should focus on wider verification of blue carbon gains, projecting future change, and the broader environmental and economic benefits to safeguard blue carbon ecosystems through law.
", "keywords": ["0301 basic medicine", "0303 health sciences", "Blue carbon", "Ecologie", "Climate Change", "Sea ice", "Nature-based solutions", "Antarctic Regions", "Review", "Evolution des esp\u00e8ces", "Hydrogen-Ion Concentration", "15. Life on land", "7. Clean energy", "Carbon", "Feedback", "03 medical and health sciences", "13. Climate action", "Blue carbon \u00b7 Ecosystem services \u00b7 Sea ice \u00b7 Nature-based solutions \u00b7 Southern Ocean", "Ecosystem services", "Ice Cover", "Seawater", "14. Life underwater", "Southern Ocean", "Ecosystem"]}, "links": [{"href": "https://link.springer.com/content/pdf/10.1007/s00114-021-01748-8.pdf"}, {"href": "https://dipot.ulb.ac.be/dspace/bitstream/2013/332392/3/Barnes2021_Article_SocietalImportanceOfAntarcticN.pdf"}, {"href": "https://doi.org/10.1007/s00114-021-01748-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/The%20Science%20of%20Nature", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00114-021-01748-8", "name": "item", "description": "10.1007/s00114-021-01748-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00114-021-01748-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-07T00:00:00Z"}}, {"id": "10.1038/s41467-022-32696-0", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:49Z", "type": "Journal Article", "created": "2022-08-27", "title": "Organic matter composition and greenhouse gas production of thawing subsea permafrost in the Laptev Sea", "description": "AbstractSubsea permafrost represents a large carbon pool that might be or become a significant greenhouse gas source. Scarcity of observational data causes large uncertainties. We here use five 21-56\uffe2\uff80\uff89m long subsea permafrost cores from the Laptev Sea to constrain organic carbon (OC) storage and sources, degradation state and potential greenhouse gas production upon thaw. Grain sizes, optically-stimulated luminescence and biomarkers suggest deposition of aeolian silt and fluvial sand over 160 000 years, with dominant fluvial/alluvial deposition of forest- and tundra-derived organic matter. We estimate an annual thaw rate of 1.3\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff890.6\uffe2\uff80\uff89kg OC m\uffe2\uff88\uff922 in subsea permafrost in the area, nine-fold exceeding organic carbon thaw rates for terrestrial permafrost. During 20-month incubations, CH4 and CO2 production averaged 1.7 nmol and 2.4 \uffc2\uffb5mol g\uffe2\uff88\uff921 OC d\uffe2\uff88\uff921, providing a baseline to assess the contribution of subsea permafrost to the high CH4 fluxes and strong ocean acidification observed in the region.The climate-active gas isoprene is the major volatile produced by a variety of trees and is released into the atmosphere in enormous quantities, on a par with global emissions of methane. While isoprene production in plants and its effect on atmospheric chemistry have received considerable attention, research into the biological isoprene sink has been neglected until recently. Here, we review current knowledge on the sources and sinks of isoprene and outline its environmental effects. Focusing on degradation by microbes, many of which are able to use isoprene as the sole source of carbon and energy, we review recent studies characterizing novel isoprene degraders isolated from soils, marine sediments and in association with plants. We describe the development and use of molecular methods to identify, quantify and genetically characterize isoprene-degrading strains in environmental samples. Finally, this review identifies research imperatives for the further study of the environmental impact, ecology, regulation and biochemistry of this interesting group of microbes.
", "keywords": ["0301 basic medicine", "0303 health sciences", "550", "Bacteria", "Review", "Plants", "15. Life on land", "03 medical and health sciences", "Biodegradation", " Environmental", "Hemiterpenes", "Genes", " Bacterial", "13. Climate action", "8. Economic growth", "Butadienes", "Seawater", "Metabolic Networks and Pathways", "Soil Microbiology"]}, "links": [{"href": "https://ueaeprints.uea.ac.uk/id/eprint/75324/1/Published_Version.pdf"}, {"href": "https://repository.essex.ac.uk/29368/1/Microbial%20metabolism%20of%20isoprene%20a%20much-neglected%20climate-active%20gas.pdf"}, {"href": "https://doi.org/10.1099/mic.0.000931"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microbiology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1099/mic.0.000931", "name": "item", "description": "10.1099/mic.0.000931", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1099/mic.0.000931"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-07-01T00:00:00Z"}}, {"id": "10.6085/aa/lndxxx_013mtbd012r00_20040330.50.3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:24:28Z", "type": "Dataset", "title": "PISCO: Physical Oceanography: moored temperature data: East Anacapa Island, California, USA (LND)", "description": "This metadata record describes moored seawater temperature data collected at East Anacapa Island, California, USA, by PISCO. Measurements were collected using StowAway Tidbit Temperature Loggers (Onset Computer Corp. TBIC32+4+27) beginning 2004-03-30. The instrument depth was 012 meters, in an overall water depth of 013 meters (both relative to Mean Sea Level, MSL). The sampling interval was 2.0 minutes.", "keywords": ["EARTH SCIENCE: Oceans: Bathymetry/Seafloor Topography: Continental Margins", "continental shelf", "temperature", "Moored Temperature Data", "14. Life underwater", "PISCO", "United States of America", "California", "EARTH SCIENCE : Oceans : Ocean Temperature : Water Temperature", "Oceanographic Sensor Data", "seawater"], "contacts": [{"organization": "Partnership For Interdisciplinary Studies Of Coastal Oceans (PISCO), Washburn, Libe,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.6085/aa/lndxxx_013mtbd012r00_20040330.50.3"}, {"rel": "self", "type": "application/geo+json", "title": "10.6085/aa/lndxxx_013mtbd012r00_20040330.50.3", "name": "item", "description": "10.6085/aa/lndxxx_013mtbd012r00_20040330.50.3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.6085/aa/lndxxx_013mtbd012r00_20040330.50.3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-01-01T00:00:00Z"}}, {"id": "10.6085/aa/shb001_021mxti005r00_20051214.50.1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:24:28Z", "type": "Dataset", "title": "PISCO: Physical Oceanography: moored temperature data: Sand Hill Bluff, California, USA (SHB001)", "description": "This metadata record describes moored seawater temperature data collected at Sand Hill Bluff, California, USA, by PISCO. Measurements were collected using a StowAway XTI Temperature Logger (Onset Computer Corp. XTI32-05+37) beginning 2005-12-14. The instrument depth was 005 meters, in an overall water depth of 21 meters (both relative to Mean Sea Level, MSL). The sampling interval was -14.2 minutes.", "keywords": ["EARTH SCIENCE: Oceans: Bathymetry/Seafloor Topography: Continental Margins", "continental shelf", "temperature", "Moored Temperature Data", "14. Life underwater", "PISCO", "United States of America", "California", "EARTH SCIENCE : Oceans : Ocean Temperature : Water Temperature", "Oceanographic Sensor Data", "seawater"], "contacts": [{"organization": "Partnership For Interdisciplinary Studies Of Coastal Oceans (PISCO), McManus, Margaret,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.6085/aa/shb001_021mxti005r00_20051214.50.1"}, {"rel": "self", "type": "application/geo+json", "title": "10.6085/aa/shb001_021mxti005r00_20051214.50.1", "name": "item", "description": "10.6085/aa/shb001_021mxti005r00_20051214.50.1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.6085/aa/shb001_021mxti005r00_20051214.50.1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-01-01T00:00:00Z"}}, {"id": "20.500.14243/521584", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:25:34Z", "type": "Journal Article", "created": "2022-08-27", "title": "Organic matter composition and greenhouse gas production of thawing subsea permafrost in the Laptev Sea", "description": "AbstractSubsea permafrost represents a large carbon pool that might be or become a significant greenhouse gas source. Scarcity of observational data causes large uncertainties. We here use five 21-56\uffe2\uff80\uff89m long subsea permafrost cores from the Laptev Sea to constrain organic carbon (OC) storage and sources, degradation state and potential greenhouse gas production upon thaw. Grain sizes, optically-stimulated luminescence and biomarkers suggest deposition of aeolian silt and fluvial sand over 160 000 years, with dominant fluvial/alluvial deposition of forest- and tundra-derived organic matter. We estimate an annual thaw rate of 1.3\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff890.6\uffe2\uff80\uff89kg OC m\uffe2\uff88\uff922 in subsea permafrost in the area, nine-fold exceeding organic carbon thaw rates for terrestrial permafrost. During 20-month incubations, CH4 and CO2 production averaged 1.7 nmol and 2.4 \uffc2\uffb5mol g\uffe2\uff88\uff921 OC d\uffe2\uff88\uff921, providing a baseline to assess the contribution of subsea permafrost to the high CH4 fluxes and strong ocean acidification observed in the region.Diminishing prospects for environmental preservation under climate change are intensifying efforts to boost capture, storage and sequestration (long-term burial) of carbon. However, as Earth\uffe2\uff80\uff99s biological carbon sinks also shrink, remediation has become a key part of the narrative for terrestrial ecosystems. In contrast, blue carbon on polar continental shelves have stronger pathways to sequestration and have increased with climate-forced marine ice losses\uffe2\uff80\uff94becoming the largest known natural negative feedback on climate change. Here we explore the size and complex dynamics of blue carbon gains with spatiotemporal changes in sea ice (60\uffe2\uff80\uff93100 MtCyear\uffe2\uff88\uff921), ice shelves (4\uffe2\uff80\uff9340 MtCyear\uffe2\uff88\uff921\uffe2\uff80\uff89=\uffe2\uff80\uff89giant iceberg generation) and glacier retreat (<\uffe2\uff80\uff891 MtCyear\uffe2\uff88\uff921). Estimates suggest that, amongst these, reduced duration of seasonal sea ice is most important. Decreasing sea ice extent drives longer (not necessarily larger biomass) smaller cell-sized phytoplankton blooms, increasing growth of many primary consumers and benthic carbon storage\uffe2\uff80\uff94where sequestration chances are maximal. However, sea ice losses also create positive feedbacks in shallow waters through increased iceberg movement and scouring of benthos. Unlike loss of sea ice, which enhances existing sinks, ice shelf losses generate brand new carbon sinks both where giant icebergs were, and in their wake. These also generate small positive feedbacks from scouring, minimised by repeat scouring at biodiversity hotspots. Blue carbon change from glacier retreat has been least well quantified, and although emerging fjords are small areas, they have high storage-sequestration conversion efficiencies, whilst blue carbon in polar waters faces many diverse and complex stressors. The identity of these are known (e.g. fishing, warming, ocean acidification, non-indigenous species and plastic pollution) but not their magnitude of impact. In order to mediate multiple stressors, research should focus on wider verification of blue carbon gains, projecting future change, and the broader environmental and economic benefits to safeguard blue carbon ecosystems through law.Atmospheric iron (Fe) deposition to the open ocean affects net primary productivity, nitrogen fixation, and carbon uptake. We investigate changes in soluble Fe (SFe) deposition from the pre\uffe2\uff80\uff90industrial period to the late 21st century using the EC\uffe2\uff80\uff90Earth3\uffe2\uff80\uff90Iron Earth System model. EC\uffe2\uff80\uff90Earth3\uffe2\uff80\uff90Iron considers various sources of Fe, including dust, fossil fuel combustion, and biomass burning, and features comprehensive atmospheric chemistry, representing atmospheric oxalate, sulfate, and Fe cycles. We show that anthropogenic activity has changed the magnitude and spatial distribution of SFe deposition by increasing combustion Fe emissions and atmospheric acidity and oxalate levels. We report that SFe deposition has doubled since the early industrial era, using the Coupled Model Intercomparison Project Phase 6 emission inventory. We highlight acidity as the main solubilization pathway for dust\uffe2\uff80\uff90Fe and oxalate\uffe2\uff80\uff90promoted processing for the solubilization of combustion\uffe2\uff80\uff90Fe. We project a global SFe deposition increase of 40% by the late 21st century relative to present day under Shared Socioeconomic Pathway (SSP) 3\uffe2\uff80\uff937.0, which assumes weak climate change mitigation policies. Conversely, SSPs with stronger mitigation pathways (1\uffe2\uff80\uff932.6 and 2\uffe2\uff80\uff934.5) result in 35% and 10% global decreases, respectively. Despite these differences, SFe deposition increases over the equatorial Pacific and decreases in the Southern Ocean (SO) for all SSPs. We further observe that deposition over the equatorial Pacific and SO are highly sensitive to future changes in dust emissions from Australia and South America, as well as from North Africa. Future studies should focus on the potential impact of climate\uffe2\uff80\uff90 and human\uffe2\uff80\uff90induced changes in dust and wildfires combined.