Food webs in sub-Antarctic lakes: a stable isotope approach
In order to improve the understanding of food-web interactions in sub-Antarctic freshwater systems, we complemented earlier experimental studies with analyses of differences in stable isotopes (N-15 and C-13) among organisms in two lakes with contrasting productivity. The distribution of the stable...
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Online Access: | https://lup.lub.lu.se/record/136776 https://doi.org/10.1007/s00300-003-0553-5 |
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ftulundlup:oai:lup.lub.lu.se:40214dee-45a3-44cc-9f60-3f6aa029b84a 2023-05-15T13:57:46+02:00 Food webs in sub-Antarctic lakes: a stable isotope approach Hansson, Lars-Anders Tranvik, L J 2003 https://lup.lub.lu.se/record/136776 https://doi.org/10.1007/s00300-003-0553-5 eng eng Springer https://lup.lub.lu.se/record/136776 http://dx.doi.org/10.1007/s00300-003-0553-5 wos:000186830700005 scopus:0346337072 Polar Biology; 26(12), pp 783-788 (2003) ISSN: 1432-2056 Ecology contributiontojournal/article info:eu-repo/semantics/article text 2003 ftulundlup https://doi.org/10.1007/s00300-003-0553-5 2023-02-01T23:33:12Z In order to improve the understanding of food-web interactions in sub-Antarctic freshwater systems, we complemented earlier experimental studies with analyses of differences in stable isotopes (N-15 and C-13) among organisms in two lakes with contrasting productivity. The distribution of the stable isotopes showed that the small copepod Boeckella michaelseni feeds mainly on pelagic POM (particulate organic material), whereas the larger copepod species B. poppei also feeds on benthic algae. Furthermore, the predatory copepod Parabroteas sarsi seems to mainly feed on B. michaelseni, but also on B. poppei and the benthic cladoceran, Alona weineckii. Moreover, stable-isotope data suggest that the diving beetle, Lancetes angusticollis, is not only feeding on B. poppei as indicated from experimental studies, but also on the benthic cladoceran A. weineckii. Although the food webs of the two lakes are very similar, they show considerable differences in the distribution of stable isotopes. We conclude that monitoring, experiments and stable-isotope analysis in combination give a reasonably clear picture of sub-Antarctic freshwater food webs. Article in Journal/Newspaper Antarc* Antarctic Polar Biology Lund University Publications (LUP) Antarctic Boeckella ENVELOPE(-56.999,-56.999,-63.404,-63.404) Polar Biology 26 12 783 788 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Ecology |
spellingShingle |
Ecology Hansson, Lars-Anders Tranvik, L J Food webs in sub-Antarctic lakes: a stable isotope approach |
topic_facet |
Ecology |
description |
In order to improve the understanding of food-web interactions in sub-Antarctic freshwater systems, we complemented earlier experimental studies with analyses of differences in stable isotopes (N-15 and C-13) among organisms in two lakes with contrasting productivity. The distribution of the stable isotopes showed that the small copepod Boeckella michaelseni feeds mainly on pelagic POM (particulate organic material), whereas the larger copepod species B. poppei also feeds on benthic algae. Furthermore, the predatory copepod Parabroteas sarsi seems to mainly feed on B. michaelseni, but also on B. poppei and the benthic cladoceran, Alona weineckii. Moreover, stable-isotope data suggest that the diving beetle, Lancetes angusticollis, is not only feeding on B. poppei as indicated from experimental studies, but also on the benthic cladoceran A. weineckii. Although the food webs of the two lakes are very similar, they show considerable differences in the distribution of stable isotopes. We conclude that monitoring, experiments and stable-isotope analysis in combination give a reasonably clear picture of sub-Antarctic freshwater food webs. |
format |
Article in Journal/Newspaper |
author |
Hansson, Lars-Anders Tranvik, L J |
author_facet |
Hansson, Lars-Anders Tranvik, L J |
author_sort |
Hansson, Lars-Anders |
title |
Food webs in sub-Antarctic lakes: a stable isotope approach |
title_short |
Food webs in sub-Antarctic lakes: a stable isotope approach |
title_full |
Food webs in sub-Antarctic lakes: a stable isotope approach |
title_fullStr |
Food webs in sub-Antarctic lakes: a stable isotope approach |
title_full_unstemmed |
Food webs in sub-Antarctic lakes: a stable isotope approach |
title_sort |
food webs in sub-antarctic lakes: a stable isotope approach |
publisher |
Springer |
publishDate |
2003 |
url |
https://lup.lub.lu.se/record/136776 https://doi.org/10.1007/s00300-003-0553-5 |
long_lat |
ENVELOPE(-56.999,-56.999,-63.404,-63.404) |
geographic |
Antarctic Boeckella |
geographic_facet |
Antarctic Boeckella |
genre |
Antarc* Antarctic Polar Biology |
genre_facet |
Antarc* Antarctic Polar Biology |
op_source |
Polar Biology; 26(12), pp 783-788 (2003) ISSN: 1432-2056 |
op_relation |
https://lup.lub.lu.se/record/136776 http://dx.doi.org/10.1007/s00300-003-0553-5 wos:000186830700005 scopus:0346337072 |
op_doi |
https://doi.org/10.1007/s00300-003-0553-5 |
container_title |
Polar Biology |
container_volume |
26 |
container_issue |
12 |
container_start_page |
783 |
op_container_end_page |
788 |
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1766265661341827072 |