First records of Alona werestschagini sinev in Finland - subfossil remains from subarctic lakes

• Autorzy: Sarmaja-Korjonen K. , Sinev A.Y.
• Języki publikacji: EN

Abstrakty

EN

Subfossil remains of a new species of Cladocera (water fleas) of the family Chydoridae in Finland, Alona werestschagini Sinev, were found in the sediments of four lakes above the treeline in northernmost Finnish Lapland. The remains were found in surface sediments of three lakes and in early Holocene sediments of one lake where the species was a pioneer which soon disappeared. The remains of A. werestschagini, except the male postabdomen, closely resemble Alona guttata. In Eurasia A. werestschagini has a wide but patchy distribution in cold climates, suggesting that it is a postglacial relict adapted to cold climate and oligotrophic lakes. Recently it has been found also in Norway and Kola Peninsula. The early Holocene finds indicate that the species spread to northernmost Finland after the retreat of the Scandinavian Ice Sheet. Since the species has been found in lakes in very severe conditions it may be used as a palaeolimnological indicator in sediment studies.

Słowa kluczowe

EN

chydorid cladocera; alona werestschaginii sinev; palaeolimnology; norhern Finnish Lapland

• Wydawca: Institute of Geological Science Polish Academy of Science
• Czasopismo: Studia Quaternaria
• Rocznik: 2008
• Tom: Vol. 25
• Strony: 43--46
• Opis fizyczny: Bibliogr. 7 poz.

Twórcy

autor

Sarmaja-Korjonen K.

autor

Sinev A.Y.

• Department of Geology, P.O. Box 64, FIN-00014 University of Helsinki, Finland,,

Bibliografia

• Belyaeva M.A. 2003. Littoral Cladocera (Crustacea: Branchio-poda) from the Altai mountain lakes, with remarks on taxonomy of Chydorus sphaericus (O. F. Muller, 1776). Arthropoda Selecta 12, 171-182.
• Kotov A.A., Ishida S., Taylor D.J. 2006. A new species in the Daph-nia curvirostris (Crustacea: Cladocera) complex from the eastern Palearctic with molecular phylogenetic evidence for the independent origin of neckteeth. Journal ofPlankton Research 28, 1067-1079.
• Sinev A.Y. 1999. Alona werestschagini sp. n., new species ofgenus Alona Baird, 1843, related to A. guttata Sars, 1862 (Anomo-poda, Chydoridae). Arthropoda Selecta 8, 23-30.
• Sinev A.Y. 2002. Key for the identifying cladocerans of the genus Alona (Anomopoda, Chydoridae) from the Russian European part and Siberia. Zoologichaesky zhurnal 81, 926-939.
• Smirnov N.N. 1998. A revision of the genus Camptocercus (Anomopoda, Chydoridae, Aloninae). Hydrobiologia 386, 63-83.
• Szeroczyńska K., Sarmaja-Korjonen K. 2007. Atlas of subfossil Cladocera from cen tral and northern Europe. Friends of the Lower Vistula Society, Poland.
• Walseng B., Hessen D.O., Halvorsen G., Schartau A.K. 2006. Major contribution from littoral crustaceans to zooplankton species richness in lakes. Limnology and Oceanography 51, 2600-2602.