Carbon-13 and Carbon-14 Abundances in Alaskan Aquatic Organisms: Delayed Production from Peat in Arctic Food Webs
Inputs of terrestrial peat carbon to the nearshore Alaskan Beaufort Sea from erosion and fluvial transport are of the same magnitude as in situ primary production within 10 kilometers of shore. Nevertheless, carbon-13/carbon-12 ratios and carbon-14 abundances in marine organisms show that only small...
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American Association for the Advancement of Science (AAAS)
1983
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Online Access: | http://dx.doi.org/10.1126/science.219.4588.1068 https://www.science.org/doi/pdf/10.1126/science.219.4588.1068 |
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craaas:10.1126/science.219.4588.1068 2024-06-23T07:50:21+00:00 Carbon-13 and Carbon-14 Abundances in Alaskan Aquatic Organisms: Delayed Production from Peat in Arctic Food Webs Schell, Donald M. 1983 http://dx.doi.org/10.1126/science.219.4588.1068 https://www.science.org/doi/pdf/10.1126/science.219.4588.1068 en eng American Association for the Advancement of Science (AAAS) Science volume 219, issue 4588, page 1068-1071 ISSN 0036-8075 1095-9203 journal-article 1983 craaas https://doi.org/10.1126/science.219.4588.1068 2024-06-13T04:01:24Z Inputs of terrestrial peat carbon to the nearshore Alaskan Beaufort Sea from erosion and fluvial transport are of the same magnitude as in situ primary production within 10 kilometers of shore. Nevertheless, carbon-13/carbon-12 ratios and carbon-14 abundances in marine organisms show that only small amounts of the terrestrial carbon are transferred beyond the microbial level. Freshwater organisms, however, are heavily dependent on peat, as shown by pronounced seasonal radiocarbon depressions in resident fish and ducks. Tundra ponds and lakes are areas where accumulated terrestrial peat carbon is apparently transferred to aquatic insect larvae and passed on to higher organisms. The lack of functionally analogous abundant marine prey organisms may explain why peat carbon is not efficiently transferred to apical food web species in the marine environment. Article in Journal/Newspaper Arctic Beaufort Sea Tundra AAAS Resource Center (American Association for the Advancement of Science) Arctic Science 219 4588 1068 1071 |
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Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
Inputs of terrestrial peat carbon to the nearshore Alaskan Beaufort Sea from erosion and fluvial transport are of the same magnitude as in situ primary production within 10 kilometers of shore. Nevertheless, carbon-13/carbon-12 ratios and carbon-14 abundances in marine organisms show that only small amounts of the terrestrial carbon are transferred beyond the microbial level. Freshwater organisms, however, are heavily dependent on peat, as shown by pronounced seasonal radiocarbon depressions in resident fish and ducks. Tundra ponds and lakes are areas where accumulated terrestrial peat carbon is apparently transferred to aquatic insect larvae and passed on to higher organisms. The lack of functionally analogous abundant marine prey organisms may explain why peat carbon is not efficiently transferred to apical food web species in the marine environment. |
format |
Article in Journal/Newspaper |
author |
Schell, Donald M. |
spellingShingle |
Schell, Donald M. Carbon-13 and Carbon-14 Abundances in Alaskan Aquatic Organisms: Delayed Production from Peat in Arctic Food Webs |
author_facet |
Schell, Donald M. |
author_sort |
Schell, Donald M. |
title |
Carbon-13 and Carbon-14 Abundances in Alaskan Aquatic Organisms: Delayed Production from Peat in Arctic Food Webs |
title_short |
Carbon-13 and Carbon-14 Abundances in Alaskan Aquatic Organisms: Delayed Production from Peat in Arctic Food Webs |
title_full |
Carbon-13 and Carbon-14 Abundances in Alaskan Aquatic Organisms: Delayed Production from Peat in Arctic Food Webs |
title_fullStr |
Carbon-13 and Carbon-14 Abundances in Alaskan Aquatic Organisms: Delayed Production from Peat in Arctic Food Webs |
title_full_unstemmed |
Carbon-13 and Carbon-14 Abundances in Alaskan Aquatic Organisms: Delayed Production from Peat in Arctic Food Webs |
title_sort |
carbon-13 and carbon-14 abundances in alaskan aquatic organisms: delayed production from peat in arctic food webs |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1983 |
url |
http://dx.doi.org/10.1126/science.219.4588.1068 https://www.science.org/doi/pdf/10.1126/science.219.4588.1068 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Beaufort Sea Tundra |
genre_facet |
Arctic Beaufort Sea Tundra |
op_source |
Science volume 219, issue 4588, page 1068-1071 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.219.4588.1068 |
container_title |
Science |
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219 |
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4588 |
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1068 |
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1071 |
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1802641218396487680 |