Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Zooplankton (Cladocera) species turnover and long-term decline of Daphnia in two high mountain lakes in the Austrian Alps |
| Abstract | 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. |
| Source | Hydrobiologia (The Hague. Print) 722 (1), pp. 75–91 |
| Keywords | Alpine lakesCladoceraClimate warmingCommunity dynamicsEnvironmental change |
| Journal | Hydrobiologia (The Hague. Print) |
| Editor | Kluwer Academic Publishers, Boston, Paesi Bassi |
| Year | 2014 |
| Type | Articolo in rivista |
| DOI | 10.1007/s10750-013-1676-5 |
| Authors | Liisa Nevalainen; Mirva Ketola; Jennifer B. Korosi; Marina Manca; Rainer Kurmayer; Karin A. Koinig; Roland Psenner; Tomi P. Luoto |
| Text | 328478 2014 10.1007/s10750 013 1676 5 ISI Web of Science WOS 000327405400007 Scopus 2 s2.0 84888210847 Alpine lakes Cladocera Climate warming Community dynamics Environmental change Zooplankton Cladocera species turnover and long term decline of Daphnia in two high mountain lakes in the Austrian Alps Liisa Nevalainen; Mirva Ketola; Jennifer B. Korosi; Marina Manca; Rainer Kurmayer; Karin A. Koinig; Roland Psenner; Tomi P. Luoto University of Helsinki; Univ Innsbruck; University of Ottawa; Natl Res Council Italy; University of Innsbruck; University of Helsinki 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. 722 Published version Articolo 2014_Hydrobiologia_722_75_91.pdf Articolo in rivista Kluwer Academic Publishers 0018 8158 Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia. The Hague. Print Hydrobiologia Dordrecht The Hague. Print Hydrobiologia Boston The Hague. Print Hydrobiologia London The Hague. Print marinamarcella.manca MANCA MARINA MARCELLA TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |