Diatom communities of lake/stream networks in the Tatra Mountains, Poland, and the Swiss Alps
Diatom communities in alpine-zone streams of the Tatra National Park and the Swiss National Park were heterogeneous with respect to species richness, abundance, Shannon diversity index, and ecological preference. Two groups of diatoms were distinguished. Group 1, inhabited streams in the upper Gąsie...
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Published in | Oceanological and hydrobiological studies Vol. 37; no. 3; pp. 21 - 35 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Berlin
Versita
01.09.2008
Walter de Gruyter GmbH |
Subjects | |
Online Access | Get full text |
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Summary: | Diatom communities in alpine-zone streams of the Tatra National Park and the Swiss National Park were heterogeneous with respect to species richness, abundance, Shannon diversity index, and ecological preference. Two groups of diatoms were distinguished. Group 1, inhabited streams in the upper Gąsienicowa Valley (Tatra Mts) and Macun Lakes region (Alps), and had high species richness and Shannon diversities (especially in the Tatra Mts streams) but low abundances. The most abundant and common diatoms were Psammothidium helveticum, Diatoma mesodon, Aulacoseira alpigena, Achnanthidium minutissimum, Psammothidium subatomoides, Psammothidium marginulatum, and Gomphonema parvulum. Group 2 inhabited Tatra Mts streams in the Five Polish Lakes Valley and lower Gąsienicowa Valley. Diatoms were highly abundant but species richness and Shannon diversities were relatively low. The most abundant were Achnanthidium minutissimum, Diatoma mesodon, Fragilaria capucina gracilis group and Tabellaria flocculosa. There was no clear difference between the diatom communities of the outlet streams of upper lakes and the inlet streams of adjacent downstream lakes. The high abundance of diatoms in the streams of the Tatra Mts suggests recent ecosystem changes related to lake eutrophication and partly by weather anomalies resulting from climate change. |
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Bibliography: | v10009-008-0002-4.pdf ArticleID:v10009-008-0002-4 ark:/67375/QT4-989K560B-S istex:BA822791A42773DE9FF9D3337F2560A4C5825471 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1730-413X 1897-3191 1897-3191 |
DOI: | 10.2478/v10009-008-0002-4 |