� 1999, by the American Society of Limnology and Oceanography, Inc. Stable isotope analyses of the pelagic food web in Lake Baikal
Stable isotope ratios of various organisms were analyzed to elucidate food web structure in the pelagic zone of Lake Baikal. The pelagic food web of Lake Baikal is simple and consists of five major ecological groups: phytoplankton (Aulacoseira baicalensis), mesozooplankton (Epischura baicalensis), m...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.419.3874 2023-05-15T15:56:44+02:00 � 1999, by the American Society of Limnology and Oceanography, Inc. Stable isotope analyses of the pelagic food web in Lake Baikal Koichi Yoshii Natalia G. Melnik Oleg A. Timoshkin Nina A. Bondarenko Pavel N. Anoshko Takahito Yoshioka Eitaro Wada The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.3874 http://www.aslo.org/lo/toc/vol_44/issue_3/0502.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.3874 http://www.aslo.org/lo/toc/vol_44/issue_3/0502.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_44/issue_3/0502.pdf text ftciteseerx 2016-01-08T03:52:29Z Stable isotope ratios of various organisms were analyzed to elucidate food web structure in the pelagic zone of Lake Baikal. The pelagic food web of Lake Baikal is simple and consists of five major ecological groups: phytoplankton (Aulacoseira baicalensis), mesozooplankton (Epischura baicalensis), macrozooplankton amphipod (Macrohectopus branickii), fish (Coregonus autumnalis migratorius and four species of cottoid fishes), and seal (Phoca sibirica). Because of the low diversity and consequently small number of possible diets for each species, we were able to quantitatively estimate the diet composition of each animal with stable isotopes. Our carbon isotope data indicated that pelagic phytoplankton are the primary carbon source of the pelagic food web because �13C levels of animals were close to those of pelagic phytoplankton. The �15N levels of animals showed a clear trend of stepwise enrichment with trophic level according to the following equation: �15N (‰) � 3.3 (Trophic Level � 1) � 3.8. In addition to interspecific food web analysis, important pelagic animals, such as M. branickii, two species of pelagic sculpin, C. autumnalis migratorius, and P. sibirica, were also examined, with emphasis on ontogenic diet changes. �15N levels of M. branickii and sculpins increased with body length, suggesting a change in feeding habits during growth. We demonstrate that carbon and nitrogen stable isotopes can be successfully applied to elucidate trophic relationships and conclude that the pelagic food web of Lake Baikal has an ideal, isotopically ordered structure. Text Coregonus autumnalis Unknown |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
Stable isotope ratios of various organisms were analyzed to elucidate food web structure in the pelagic zone of Lake Baikal. The pelagic food web of Lake Baikal is simple and consists of five major ecological groups: phytoplankton (Aulacoseira baicalensis), mesozooplankton (Epischura baicalensis), macrozooplankton amphipod (Macrohectopus branickii), fish (Coregonus autumnalis migratorius and four species of cottoid fishes), and seal (Phoca sibirica). Because of the low diversity and consequently small number of possible diets for each species, we were able to quantitatively estimate the diet composition of each animal with stable isotopes. Our carbon isotope data indicated that pelagic phytoplankton are the primary carbon source of the pelagic food web because �13C levels of animals were close to those of pelagic phytoplankton. The �15N levels of animals showed a clear trend of stepwise enrichment with trophic level according to the following equation: �15N (‰) � 3.3 (Trophic Level � 1) � 3.8. In addition to interspecific food web analysis, important pelagic animals, such as M. branickii, two species of pelagic sculpin, C. autumnalis migratorius, and P. sibirica, were also examined, with emphasis on ontogenic diet changes. �15N levels of M. branickii and sculpins increased with body length, suggesting a change in feeding habits during growth. We demonstrate that carbon and nitrogen stable isotopes can be successfully applied to elucidate trophic relationships and conclude that the pelagic food web of Lake Baikal has an ideal, isotopically ordered structure. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Koichi Yoshii Natalia G. Melnik Oleg A. Timoshkin Nina A. Bondarenko Pavel N. Anoshko Takahito Yoshioka Eitaro Wada |
spellingShingle |
Koichi Yoshii Natalia G. Melnik Oleg A. Timoshkin Nina A. Bondarenko Pavel N. Anoshko Takahito Yoshioka Eitaro Wada � 1999, by the American Society of Limnology and Oceanography, Inc. Stable isotope analyses of the pelagic food web in Lake Baikal |
author_facet |
Koichi Yoshii Natalia G. Melnik Oleg A. Timoshkin Nina A. Bondarenko Pavel N. Anoshko Takahito Yoshioka Eitaro Wada |
author_sort |
Koichi Yoshii |
title |
� 1999, by the American Society of Limnology and Oceanography, Inc. Stable isotope analyses of the pelagic food web in Lake Baikal |
title_short |
� 1999, by the American Society of Limnology and Oceanography, Inc. Stable isotope analyses of the pelagic food web in Lake Baikal |
title_full |
� 1999, by the American Society of Limnology and Oceanography, Inc. Stable isotope analyses of the pelagic food web in Lake Baikal |
title_fullStr |
� 1999, by the American Society of Limnology and Oceanography, Inc. Stable isotope analyses of the pelagic food web in Lake Baikal |
title_full_unstemmed |
� 1999, by the American Society of Limnology and Oceanography, Inc. Stable isotope analyses of the pelagic food web in Lake Baikal |
title_sort |
� 1999, by the american society of limnology and oceanography, inc. stable isotope analyses of the pelagic food web in lake baikal |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.3874 http://www.aslo.org/lo/toc/vol_44/issue_3/0502.pdf |
genre |
Coregonus autumnalis |
genre_facet |
Coregonus autumnalis |
op_source |
http://www.aslo.org/lo/toc/vol_44/issue_3/0502.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.3874 http://www.aslo.org/lo/toc/vol_44/issue_3/0502.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766392125050585088 |