Carbon and nitrogen isotope studies in an arctic ecosystem
This proposal requests funding for the completion of our current ecological studies at the MS-117 research site at Toolik Lake, Alaska. We have been using a mix of stable and radioisotope techniques to assess the fluxes of carbon and nitrogen within the ecosystem and the implications for long-term c...
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Alaska Univ., Fairbanks, AK (United States). Water Research Center
1989
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Online Access: | https://doi.org/10.2172/10137214 https://digital.library.unt.edu/ark:/67531/metadc1311090/ |
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ftunivnotexas:info:ark/67531/metadc1311090 2023-05-15T14:55:11+02:00 Carbon and nitrogen isotope studies in an arctic ecosystem Schell, D. M. United States. Department of Energy. 1989-12-31 15 p. Text https://doi.org/10.2172/10137214 https://digital.library.unt.edu/ark:/67531/metadc1311090/ English eng Alaska Univ., Fairbanks, AK (United States). Water Research Center other: DE93010985 rep-no: DOE/ER/60265--6 grantno: FG06-84ER60265 doi:10.2172/10137214 osti: 10137214 https://digital.library.unt.edu/ark:/67531/metadc1311090/ ark: ark:/67531/metadc1311090 Other Information: PBD: [1989] Baseline Ecology Radioactive Materials Monitoring And Transport 540230 Chemicals Monitoring And Transport Alaska Tundra Carbon Cycle Carbon 14 540220 54 Environmental Sciences Arctic Regions Nitrogen Cycle Report 1989 ftunivnotexas https://doi.org/10.2172/10137214 2018-12-01T23:08:26Z This proposal requests funding for the completion of our current ecological studies at the MS-117 research site at Toolik Lake, Alaska. We have been using a mix of stable and radioisotope techniques to assess the fluxes of carbon and nitrogen within the ecosystem and the implications for long-term carbon storage or loss from the tundra. Several tentative conclusions have emerged from our study including: Tundra in the foothills is no longer accumulating carbon. Surficial radiocarbon abundances show little or no accumulation since 1000--2500 yrs BP. Coastal plain tundra is still accumulating carbon, but the rate of accumulation has dropped in the last few thousand years. Carbon export from watersheds in the Kuparuk and Imnavait Creek drainages are in excess of that expected from estimated primary productivity; and Nitrogen isotope abundances vary between species of plants and along hydrologic gradients. Report Arctic Tundra Alaska University of North Texas: UNT Digital Library Arctic |
institution |
Open Polar |
collection |
University of North Texas: UNT Digital Library |
op_collection_id |
ftunivnotexas |
language |
English |
topic |
Baseline Ecology Radioactive Materials Monitoring And Transport 540230 Chemicals Monitoring And Transport Alaska Tundra Carbon Cycle Carbon 14 540220 54 Environmental Sciences Arctic Regions Nitrogen Cycle |
spellingShingle |
Baseline Ecology Radioactive Materials Monitoring And Transport 540230 Chemicals Monitoring And Transport Alaska Tundra Carbon Cycle Carbon 14 540220 54 Environmental Sciences Arctic Regions Nitrogen Cycle Schell, D. M. Carbon and nitrogen isotope studies in an arctic ecosystem |
topic_facet |
Baseline Ecology Radioactive Materials Monitoring And Transport 540230 Chemicals Monitoring And Transport Alaska Tundra Carbon Cycle Carbon 14 540220 54 Environmental Sciences Arctic Regions Nitrogen Cycle |
description |
This proposal requests funding for the completion of our current ecological studies at the MS-117 research site at Toolik Lake, Alaska. We have been using a mix of stable and radioisotope techniques to assess the fluxes of carbon and nitrogen within the ecosystem and the implications for long-term carbon storage or loss from the tundra. Several tentative conclusions have emerged from our study including: Tundra in the foothills is no longer accumulating carbon. Surficial radiocarbon abundances show little or no accumulation since 1000--2500 yrs BP. Coastal plain tundra is still accumulating carbon, but the rate of accumulation has dropped in the last few thousand years. Carbon export from watersheds in the Kuparuk and Imnavait Creek drainages are in excess of that expected from estimated primary productivity; and Nitrogen isotope abundances vary between species of plants and along hydrologic gradients. |
author2 |
United States. Department of Energy. |
format |
Report |
author |
Schell, D. M. |
author_facet |
Schell, D. M. |
author_sort |
Schell, D. M. |
title |
Carbon and nitrogen isotope studies in an arctic ecosystem |
title_short |
Carbon and nitrogen isotope studies in an arctic ecosystem |
title_full |
Carbon and nitrogen isotope studies in an arctic ecosystem |
title_fullStr |
Carbon and nitrogen isotope studies in an arctic ecosystem |
title_full_unstemmed |
Carbon and nitrogen isotope studies in an arctic ecosystem |
title_sort |
carbon and nitrogen isotope studies in an arctic ecosystem |
publisher |
Alaska Univ., Fairbanks, AK (United States). Water Research Center |
publishDate |
1989 |
url |
https://doi.org/10.2172/10137214 https://digital.library.unt.edu/ark:/67531/metadc1311090/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Tundra Alaska |
genre_facet |
Arctic Tundra Alaska |
op_source |
Other Information: PBD: [1989] |
op_relation |
other: DE93010985 rep-no: DOE/ER/60265--6 grantno: FG06-84ER60265 doi:10.2172/10137214 osti: 10137214 https://digital.library.unt.edu/ark:/67531/metadc1311090/ ark: ark:/67531/metadc1311090 |
op_doi |
https://doi.org/10.2172/10137214 |
_version_ |
1766326975171919872 |