Biotransport of organic pollutants to an inland Alaska Lake by migrating Sockeye Salmon (Oncorhynchus nerka)
Persistent organic pollutants such as polychlorinated biphenyls (PCBs) and the pesticide DDT, known to harm wildlife, have been shown to reach pristine Subarctic and Arctic areas by global atmospheric transport. Another transport route for pollutant entry into these ecosystems is provided by migrati...
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The Arctic Institute of North America
1998
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ftulundlup:oai:lup.lub.lu.se:d562827c-703f-4dac-9d47-97bd33274b16 2023-05-15T14:21:43+02:00 Biotransport of organic pollutants to an inland Alaska Lake by migrating Sockeye Salmon (Oncorhynchus nerka) Ewald, Göran Larsson, Per Linge, H Okla, Lennart Szarzi, N 1998 https://lup.lub.lu.se/record/8163869 eng eng The Arctic Institute of North America https://lup.lub.lu.se/record/8163869 scopus:0031960511 Arctic; 51(1), pp 40-47 (1998) ISSN: 0004-0843 Biological Sciences contributiontojournal/article info:eu-repo/semantics/article text 1998 ftulundlup 2023-02-01T23:27:24Z Persistent organic pollutants such as polychlorinated biphenyls (PCBs) and the pesticide DDT, known to harm wildlife, have been shown to reach pristine Subarctic and Arctic areas by global atmospheric transport. Another transport route for pollutant entry into these ecosystems is provided by migrating salmon. Pollutant transport was studied in a population of sockeye salmon (Oncorhynchus nerka) in the Copper River, Alaska during their 410 km spawning migration. Pollutants accumulated by the salmon during their ocean life stage were not eliminated during migration, but were transported to the spawning lakes and accumulated in the freshwater food web there. The influence of the biotransported pollutants was investigated by comparing pollutant levels and compositions in atmospheric deposition as well as in two different populations of arctic grayling (Thymallus arcticus). One grayling population was in the salmon spawning lake and the other in a nearby lake not hosting anadromous fish, but receiving pollutants only via atmospheric deposition. The grayling in the salmon spawning lake were found to have concentrations of organic pollutants more than two times higher than those of the grayling in the salmon-free lake, and the pollutant composition resembled that found in salmon. Thus, in the studied Alaska river system, biotransport was found to have a far greater influence than atmospheric input on the PCB and DDT levels in lake biota. Article in Journal/Newspaper Arctic Arctic grayling Arctic Subarctic Thymallus arcticus Alaska Lund University Publications (LUP) Arctic Sockeye ENVELOPE(-130.143,-130.143,54.160,54.160) Spawning Lake ENVELOPE(-126.261,-126.261,56.576,56.576) |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Biological Sciences |
spellingShingle |
Biological Sciences Ewald, Göran Larsson, Per Linge, H Okla, Lennart Szarzi, N Biotransport of organic pollutants to an inland Alaska Lake by migrating Sockeye Salmon (Oncorhynchus nerka) |
topic_facet |
Biological Sciences |
description |
Persistent organic pollutants such as polychlorinated biphenyls (PCBs) and the pesticide DDT, known to harm wildlife, have been shown to reach pristine Subarctic and Arctic areas by global atmospheric transport. Another transport route for pollutant entry into these ecosystems is provided by migrating salmon. Pollutant transport was studied in a population of sockeye salmon (Oncorhynchus nerka) in the Copper River, Alaska during their 410 km spawning migration. Pollutants accumulated by the salmon during their ocean life stage were not eliminated during migration, but were transported to the spawning lakes and accumulated in the freshwater food web there. The influence of the biotransported pollutants was investigated by comparing pollutant levels and compositions in atmospheric deposition as well as in two different populations of arctic grayling (Thymallus arcticus). One grayling population was in the salmon spawning lake and the other in a nearby lake not hosting anadromous fish, but receiving pollutants only via atmospheric deposition. The grayling in the salmon spawning lake were found to have concentrations of organic pollutants more than two times higher than those of the grayling in the salmon-free lake, and the pollutant composition resembled that found in salmon. Thus, in the studied Alaska river system, biotransport was found to have a far greater influence than atmospheric input on the PCB and DDT levels in lake biota. |
format |
Article in Journal/Newspaper |
author |
Ewald, Göran Larsson, Per Linge, H Okla, Lennart Szarzi, N |
author_facet |
Ewald, Göran Larsson, Per Linge, H Okla, Lennart Szarzi, N |
author_sort |
Ewald, Göran |
title |
Biotransport of organic pollutants to an inland Alaska Lake by migrating Sockeye Salmon (Oncorhynchus nerka) |
title_short |
Biotransport of organic pollutants to an inland Alaska Lake by migrating Sockeye Salmon (Oncorhynchus nerka) |
title_full |
Biotransport of organic pollutants to an inland Alaska Lake by migrating Sockeye Salmon (Oncorhynchus nerka) |
title_fullStr |
Biotransport of organic pollutants to an inland Alaska Lake by migrating Sockeye Salmon (Oncorhynchus nerka) |
title_full_unstemmed |
Biotransport of organic pollutants to an inland Alaska Lake by migrating Sockeye Salmon (Oncorhynchus nerka) |
title_sort |
biotransport of organic pollutants to an inland alaska lake by migrating sockeye salmon (oncorhynchus nerka) |
publisher |
The Arctic Institute of North America |
publishDate |
1998 |
url |
https://lup.lub.lu.se/record/8163869 |
long_lat |
ENVELOPE(-130.143,-130.143,54.160,54.160) ENVELOPE(-126.261,-126.261,56.576,56.576) |
geographic |
Arctic Sockeye Spawning Lake |
geographic_facet |
Arctic Sockeye Spawning Lake |
genre |
Arctic Arctic grayling Arctic Subarctic Thymallus arcticus Alaska |
genre_facet |
Arctic Arctic grayling Arctic Subarctic Thymallus arcticus Alaska |
op_source |
Arctic; 51(1), pp 40-47 (1998) ISSN: 0004-0843 |
op_relation |
https://lup.lub.lu.se/record/8163869 scopus:0031960511 |
_version_ |
1766294424890900480 |