Carbon and nitrogen isotope studies in an arctic aquatic ecosystem
The Phase II studies of the R4D Program on stream and watershed ecology reflect the accomplishments and accumulation of baseline information obtained during the past studies. Although our rough estimates indicate that nitrogen inputs to the watershed ba lance losses, the carbon fluxes suggest that t...
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ftosti:oai:osti.gov:10137210 2023-07-30T04:01:24+02:00 Carbon and nitrogen isotope studies in an arctic aquatic ecosystem Schell, D.M. 2008-06-19 application/pdf http://www.osti.gov/servlets/purl/10137210 https://www.osti.gov/biblio/10137210 https://doi.org/10.2172/10137210 unknown http://www.osti.gov/servlets/purl/10137210 https://www.osti.gov/biblio/10137210 https://doi.org/10.2172/10137210 doi:10.2172/10137210 54 ENVIRONMENTAL SCIENCES TUNDRA CARBON CYCLE NITROGEN CYCLE NITROGEN ISOTOPES ECOLOGICAL CONCENTRATION CARBON ISOTOPES ARCTIC REGIONS AQUATIC ECOSYSTEMS BASELINE ECOLOGY CARBON DIOXIDE ALASKA CARBON 14 2008 ftosti https://doi.org/10.2172/10137210 2023-07-11T10:58:43Z The Phase II studies of the R4D Program on stream and watershed ecology reflect the accomplishments and accumulation of baseline information obtained during the past studies. Although our rough estimates indicate that nitrogen inputs to the watershed ba lance losses, the carbon fluxes suggest that they are not in equilibrium and that there is a net loss of carbon from the tundra ecosystem through respiration and transport out of the watershed via the stream system. Radiocarbon profiles of soil sections coupled with mass transport calculations revealed that peat accumulation has essentially ceased in the R4D watershed and appears to be in ablative loss. Thus the carbon flux measurements provide validation tests for the PLANTGRO and GAS-HYDRO models of the PHASE II studies. These findings are also important in the context of global CO{sub 2} increases from positive feedback mechanisms in peatlands associated with climatic warming in the subarctic regions. Other/Unknown Material Arctic Subarctic Tundra Alaska SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic |
institution |
Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
54 ENVIRONMENTAL SCIENCES TUNDRA CARBON CYCLE NITROGEN CYCLE NITROGEN ISOTOPES ECOLOGICAL CONCENTRATION CARBON ISOTOPES ARCTIC REGIONS AQUATIC ECOSYSTEMS BASELINE ECOLOGY CARBON DIOXIDE ALASKA CARBON 14 |
spellingShingle |
54 ENVIRONMENTAL SCIENCES TUNDRA CARBON CYCLE NITROGEN CYCLE NITROGEN ISOTOPES ECOLOGICAL CONCENTRATION CARBON ISOTOPES ARCTIC REGIONS AQUATIC ECOSYSTEMS BASELINE ECOLOGY CARBON DIOXIDE ALASKA CARBON 14 Schell, D.M. Carbon and nitrogen isotope studies in an arctic aquatic ecosystem |
topic_facet |
54 ENVIRONMENTAL SCIENCES TUNDRA CARBON CYCLE NITROGEN CYCLE NITROGEN ISOTOPES ECOLOGICAL CONCENTRATION CARBON ISOTOPES ARCTIC REGIONS AQUATIC ECOSYSTEMS BASELINE ECOLOGY CARBON DIOXIDE ALASKA CARBON 14 |
description |
The Phase II studies of the R4D Program on stream and watershed ecology reflect the accomplishments and accumulation of baseline information obtained during the past studies. Although our rough estimates indicate that nitrogen inputs to the watershed ba lance losses, the carbon fluxes suggest that they are not in equilibrium and that there is a net loss of carbon from the tundra ecosystem through respiration and transport out of the watershed via the stream system. Radiocarbon profiles of soil sections coupled with mass transport calculations revealed that peat accumulation has essentially ceased in the R4D watershed and appears to be in ablative loss. Thus the carbon flux measurements provide validation tests for the PLANTGRO and GAS-HYDRO models of the PHASE II studies. These findings are also important in the context of global CO{sub 2} increases from positive feedback mechanisms in peatlands associated with climatic warming in the subarctic regions. |
author |
Schell, D.M. |
author_facet |
Schell, D.M. |
author_sort |
Schell, D.M. |
title |
Carbon and nitrogen isotope studies in an arctic aquatic ecosystem |
title_short |
Carbon and nitrogen isotope studies in an arctic aquatic ecosystem |
title_full |
Carbon and nitrogen isotope studies in an arctic aquatic ecosystem |
title_fullStr |
Carbon and nitrogen isotope studies in an arctic aquatic ecosystem |
title_full_unstemmed |
Carbon and nitrogen isotope studies in an arctic aquatic ecosystem |
title_sort |
carbon and nitrogen isotope studies in an arctic aquatic ecosystem |
publishDate |
2008 |
url |
http://www.osti.gov/servlets/purl/10137210 https://www.osti.gov/biblio/10137210 https://doi.org/10.2172/10137210 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Subarctic Tundra Alaska |
genre_facet |
Arctic Subarctic Tundra Alaska |
op_relation |
http://www.osti.gov/servlets/purl/10137210 https://www.osti.gov/biblio/10137210 https://doi.org/10.2172/10137210 doi:10.2172/10137210 |
op_doi |
https://doi.org/10.2172/10137210 |
_version_ |
1772812132232986624 |