Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost
International audience As high latitudes warm, vast stocks of carbon and nitrogen stored in permafrost will become available for transport to aquatic ecosystems. While there is a growing understanding of the potential effects of permafrost collapse (thermokarst) on aquatic biogeochemical cycles, nei...
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Online Access: | https://doi.org/10.5194/bg-12-3725-2015 https://hal-univ-rennes1.archives-ouvertes.fr/hal-01231207 |
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fttriple:oai:gotriple.eu:10670/1.116yv3 2023-05-15T15:08:43+02:00 Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost Abbott, Benjamin W. Jones, Jeremy B. Godsey, Sarah E. Larouche, Julia R. Bowden, William B. Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1) Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES) Institute of Arctic Biology University of Alaska Anchorage Department of Geosciences Idaho State University Rubenstein School of Environment and Natural Resources University of Vermont Burlington 0806394, Office of Polar Programs 2015-01-01 https://doi.org/10.5194/bg-12-3725-2015 https://hal-univ-rennes1.archives-ouvertes.fr/hal-01231207 en eng HAL CCSD European Geosciences Union hal-01231207 doi:10.5194/bg-12-3725-2015 10670/1.116yv3 https://hal-univ-rennes1.archives-ouvertes.fr/hal-01231207 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences Biogeosciences, European Geosciences Union, 2015, 12 (12), pp.3725-3740. ⟨10.5194/bg-12-3725-2015⟩ envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2015 fttriple https://doi.org/10.5194/bg-12-3725-2015 2023-01-22T18:44:36Z International audience As high latitudes warm, vast stocks of carbon and nitrogen stored in permafrost will become available for transport to aquatic ecosystems. While there is a growing understanding of the potential effects of permafrost collapse (thermokarst) on aquatic biogeochemical cycles, neither the spatial extent nor temporal duration of these effects is known. To test hypotheses concerning patterns and persistence of elemental export from upland thermokarst, we sampled hydrologic outflow from 83 thermokarst features in various stages of development across the North Slope of Alaska. We hypothesizedthat an initial pulse of carbon and nutrients would be followed by a period of elemental retention during feature recovery, and that the duration of these stages would depend on feature morphology. Thermokarst caused substantial increases in dissolved organic carbon a water chemistry differed by feature type and secondarily by landscape age. Most solutes returned to undisturbed concentrations after feature stabilization, but elevated dissolved carbon, inorganic nitrogen, and sulfate concentrations persisted through stabilization for some feature types, suggesting that aquatic disturbance by thermokarst for these solutes is longlived. Dissolved methane decreased by 90% for most feature types, potentially due to high concentrations of sulfateand inorganic nitrogen. Spatial patterns of carbon and nutrient export from thermokarst suggest that upland thermokarstmay be a dominant linkage transferring carbon and nutrients from terrestrial to aquatic ecosystems as the Arctic warms. Article in Journal/Newspaper Arctic north slope permafrost Thermokarst Alaska Unknown Arctic Biogeosciences 12 12 3725 3740 |
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English |
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envir geo |
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envir geo Abbott, Benjamin W. Jones, Jeremy B. Godsey, Sarah E. Larouche, Julia R. Bowden, William B. Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost |
topic_facet |
envir geo |
description |
International audience As high latitudes warm, vast stocks of carbon and nitrogen stored in permafrost will become available for transport to aquatic ecosystems. While there is a growing understanding of the potential effects of permafrost collapse (thermokarst) on aquatic biogeochemical cycles, neither the spatial extent nor temporal duration of these effects is known. To test hypotheses concerning patterns and persistence of elemental export from upland thermokarst, we sampled hydrologic outflow from 83 thermokarst features in various stages of development across the North Slope of Alaska. We hypothesizedthat an initial pulse of carbon and nutrients would be followed by a period of elemental retention during feature recovery, and that the duration of these stages would depend on feature morphology. Thermokarst caused substantial increases in dissolved organic carbon a water chemistry differed by feature type and secondarily by landscape age. Most solutes returned to undisturbed concentrations after feature stabilization, but elevated dissolved carbon, inorganic nitrogen, and sulfate concentrations persisted through stabilization for some feature types, suggesting that aquatic disturbance by thermokarst for these solutes is longlived. Dissolved methane decreased by 90% for most feature types, potentially due to high concentrations of sulfateand inorganic nitrogen. Spatial patterns of carbon and nutrient export from thermokarst suggest that upland thermokarstmay be a dominant linkage transferring carbon and nutrients from terrestrial to aquatic ecosystems as the Arctic warms. |
author2 |
Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1) Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES) Institute of Arctic Biology University of Alaska Anchorage Department of Geosciences Idaho State University Rubenstein School of Environment and Natural Resources University of Vermont Burlington 0806394, Office of Polar Programs |
format |
Article in Journal/Newspaper |
author |
Abbott, Benjamin W. Jones, Jeremy B. Godsey, Sarah E. Larouche, Julia R. Bowden, William B. |
author_facet |
Abbott, Benjamin W. Jones, Jeremy B. Godsey, Sarah E. Larouche, Julia R. Bowden, William B. |
author_sort |
Abbott, Benjamin W. |
title |
Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost |
title_short |
Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost |
title_full |
Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost |
title_fullStr |
Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost |
title_full_unstemmed |
Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost |
title_sort |
patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://doi.org/10.5194/bg-12-3725-2015 https://hal-univ-rennes1.archives-ouvertes.fr/hal-01231207 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic north slope permafrost Thermokarst Alaska |
genre_facet |
Arctic north slope permafrost Thermokarst Alaska |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences Biogeosciences, European Geosciences Union, 2015, 12 (12), pp.3725-3740. ⟨10.5194/bg-12-3725-2015⟩ |
op_relation |
hal-01231207 doi:10.5194/bg-12-3725-2015 10670/1.116yv3 https://hal-univ-rennes1.archives-ouvertes.fr/hal-01231207 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/bg-12-3725-2015 |
container_title |
Biogeosciences |
container_volume |
12 |
container_issue |
12 |
container_start_page |
3725 |
op_container_end_page |
3740 |
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1766340030257692672 |