Role of phytoplankton size distribution in lake ecosystems revealed by a comparison of whole plankton community structure between Lake Baikal and Lake Biwa

The influence of the size distribution of phytoplankton on changes in the planktonic food web structures with eutrophication was examined using natural planktonic communities in two world-famous lakes: Lake Baikal and Lake Biwa. The size distribution of phytoplankton and the ratio of heterotrophic t...

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Bibliographic Details
Published in:Limnology 2007-12, Vol.8 (3), p.227-232
Main Authors: Sekino, Tatsuki, Genkai-Kato, Motomi, Kawabata, Zen'ichiro, Melnik, Natalia G, Logacheva, Natalia P, Belykh, Olga I, Obolkina, Lubov A, Bondarenko, Nina A, Khodzher, Tamara V, Gorbunova, Ludmila A, Tanichev, Andrey I, Yoshida, Takehito, Kagami, Maiko, Gurung, Tek B, Urabe, Jotaro, Higashi, Masahiko, Nakanishi, Masami
Format: Article
Language:English
Subjects:
Aquatic ecosystems
Community structure
Eutrophication
food webs
Grazing
H/A ratio
Mesotrophic lakes
Nutrient uptake
Oligotrophic lakes
Phytoplankton
Phytoplankton size distribution
Plankton
Primary production
Size-selective grazing
Trophic levels
Trophic status
Water column
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Summary:The influence of the size distribution of phytoplankton on changes in the planktonic food web structures with eutrophication was examined using natural planktonic communities in two world-famous lakes: Lake Baikal and Lake Biwa. The size distribution of phytoplankton and the ratio of heterotrophic to autotrophic biomass (H/A ratio), indicating the balance between primary production and its consumption, were investigated in the lakes of different trophic status. The results revealed that microphytoplankton (>20μm) in mesotrophic Lake Biwa, and picophytoplankton (
ISSN:1439-8621
1439-863X
DOI:10.1007/s10201-007-0218-0