Abstract
BackgroundInformation on freshwater invertebrates of the Russian Arctic is very scarce, especially concerning insular biota. The species composition of microcrustaceans (Cladocera, Copepoda) of many arctic islands is still unknown and have never been explored. Here we report the results of the first investigation of the zooplankton of the Shokalsky Island (YamaloNenets Autonomous Okrug, Russia).Information on freshwater invertebrates of the Russian Arctic is very scarce, especially concerning insular biota. The species composition of microcrustaceans (Cladocera, Copepoda) of many arctic islands is still unknown and have never been explored. Here we report the results of the first investigation of the zooplankton of the Shokalsky Island (YamaloNenets Autonomous Okrug, Russia).New informationThe new records reported here are novel for the region and significantly expand the knowledge of the high-latitude aquatic biota. We studied the species composition of Cladocera and Copepoda of 21 freshwater habitats located on the southwestern part of Shokalsky Island. We found 15 species of microcrustaceans in total and all of them are reported for the first time here. Also, the obtained data expand the existing ranges of distribution of some species and report several new taxa for the whole YamaloNenets region of Russia.
Highlights
We studied the species composition of Cladocera and Copepoda of 21 freshwater habitats located on the southwestern part of Shokalsky Island
Shokalsky Island is a small island in the Kara Sea located in the YamaloNenets Autonomous Okrug of Russia (Fig. 1)
The island is a flat plain covered by tundra with a great number of rivers, small lakes and ponds (Il'yna et al 1985). It belongs to the Gydan Nature Reserve, which includes a diverse terrain of northern Gydan Peninsula, preserving waterfowl nesting areas, polar bear, and walrus and is known as the nothermost nature reserve in Western Siberia (Nikiforov 1997)
Summary
Information on freshwater invertebrates of the Russian Arctic is very scarce, especially concerning insular biota. The species composition of microcrustaceans (Cladocera, Copepoda) of many arctic islands is still unknown and have never been explored. We report the results of the first investigation of the zooplankton of the Shokalsky Island (YamaloNenets Autonomous Okrug, Russia). The new records reported here are novel for the region and significantly expand the knowledge of the high-latitude aquatic biota. Cladocera and Copepoda of 21 freshwater habitats located on the southwestern part of Shokalsky Island. The obtained data expand the existing ranges of distribution of some species and report several new taxa for the whole YamaloNenets region of Russia. Copepoda, microcrustaceans, freshwater, Russian Arctic, Shokalsky Island
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