RECENT OSTRACODA FROM THE LAPTEV SEA (ARCTIC SIBERIA): SPECIES ASSEMBLAGES AND SOME ENVIRONMENTAL RELATIONSHIPSстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:upper continental slope were investigated for assemblage studies.A total of 41 species belonging to 19 genera and
12 families have been identified.Three assemblages have been established that could be linked to environmental
factors such as water depth, bottom salinities, water mass circulation and sea-ice transportation.The species-rich and
abundant assemblages of the western and central Laptev Sea were related to the Atlantic waters occupying the upper
continental slope.These include relatively deep-water forms that show clear affinities to North Atlantic and Arctic
Ocean assemblages (Cytheropteron biconvexa, C. testudo, C. simplex, C. nodosoalatum, C. inflatum, C. porterae, Krithe
glacialis, K. minima, Pseudocythere caudata, Polycope punctata, P. orbicularis).In the eastern middle shelf region, the
assemblage is comprised of Acanthocythereis dunelmensis together with other normal marine species (Semicytherura
complanata, Elofsonella concinna, Cluthia cluthae).This assemblage seems connected to the winter flaw polynya which
is believed to be the main area of sediment entrainment into sea ice.The inner shelf assemblage of the southern
Laptev Sea is dominated by shallow-water euryhaline species (Paracyprideis pseudopunctillata and Heterocyprideis
sorbyana) with admixture of the brackish-water species Roundstonia macchesneyi.The unusual occurrence of a number
of shallow-water ostracod species on the upper continental slope may be explained by ice-rafting which these
ostracods are probably able to survive.