Zooplankton (Cladocera) species turnover and long-term decline of Daphnia in two high mountain lakes in the Austrian Alps
Autor: | Liisa Nevalainen, Mirva Ketola, Jennifer B. Korosi, Tomi P. Luoto, Karin A. Koinig, Marina Manca, Rainer Kurmayer, Roland Psenner |
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Rok vydání: | 2013 |
Předmět: |
biology
Ecology Alpine lakes media_common.quotation_subject Pelagic zone Interspecific competition Ecological succession Aquatic Science Plankton Cladocera Environmental change biology.organism_classification Daphnia Zooplankton Competition (biology) Climate warming Geography Bosmina Community dynamics media_common |
Zdroj: | Hydrobiologia (The Hague. Print) 722 (2014): 75–91. doi:10.1007/s10750-013-1676-5 info:cnr-pdr/source/autori:Liisa Nevalainen; Mirva Ketola; Jennifer B. Korosi; Marina Manca; Rainer Kurmayer; Karin A. Koinig; Roland Psenner; Tomi P. Luoto/titolo:Zooplankton (Cladocera) species turnover and long-term decline of Daphnia in two high mountain lakes in the Austrian Alps/doi:10.1007%2Fs10750-013-1676-5/rivista:Hydrobiologia (The Hague. Print)/anno:2014/pagina_da:75/pagina_a:91/intervallo_pagine:75–91/volume:722 |
ISSN: | 1573-5117 0018-8158 |
DOI: | 10.1007/s10750-013-1676-5 |
Popis: | We investigated long-term succession of sedimentary cladoceran assemblages in two morphologically divergent mountain lakes by utilizing sediment traps and previously available sediment data. We aimed to detect lake-specific changes in pelagic communities potentially attributable to climate warming under the presumption that lakes and biotic communities may respond individually to the same regional climatic forcing. Both lakes showed a similar community turnover, as Daphnia was first replaced by Chydorus cf. sphaericus and during the twentieth century by the latest colonizer Bosmina. The community succession was similar among the lakes and consistent with the regional temperature increase, although the timing of community shift, the magnitude of change, and taxa in question differed. Decline of Daphnia mismatched with historical fish stockings, but the eventual extirpation of Daphnia in one of the lakes corresponded to the start of fish introductions. We propose that the observed shifts were mainly governed by increasing temperatures and its limnoecological consequences (e.g., deeper mixing). We suggest that Bosmina distribution may be extending to lakes at higher altitudes as a response to climate warming, and that it may replace Daphnia as the key component of pelagic alpine food webs by coping in interspecific resource competition under changed limnological regimes. |
Databáze: | OpenAIRE |
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