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Turkish Journal of Fisheries and Aquatic Sciences 2017, Vol 17, Num, 2     (Pages: 323-332)

Water mite (Acari, Hydrachnidia) Assemblages in Relation to Differentiation of Mesohabitats in a Shallow Lake and Its Margins

Robert Stryjecki 1 ,Andrzej Zawal 2 ,Agnieszka Szlauer-Łukaszewska 2 ,Grzegorz Michoński 2 ,Edyta Buczyńska 1 ,Paweł Buczyński 3 ,Joanna Pakulnicka 4 ,Przemysław Śmietana 5

1 University of Life Sciences in Lublin, Department of Zoology, Animal Ecology and Wildlife Management, Akademicka 13, 20-950 Lublin, Poland
2 University of Szczecin, Department of Invertebrate Zoology and Limnology, Institute for Research on Biodiversity, Wąska 13, 71-4 15 Szczecin, Poland
3 University, Akademicka, Department of Zoology, Maria Curie-Skłodowska 19, 20-033 Lublin, Poland
4 University of Warmia and Mazury in Olsztyn, Department of Ecology and Environmental Protection, Faculty of Biology and Biotechnology, Plac Łódzki 3, 727 Olsztyn, Poland
5 University of Szczecin, Department of Ecology & Environmental Protection, Institute for Research on Biodiversity, 71-415 Szczecin, Wąska 13, Poland
DOI : 10.4194/1303-2712-v17_2_11 Viewed : 503 - Downloaded : 429 The main objective of the study was to present an analysis of the Hydrachnidia species composition in the highly varied Lake Świdwie ecosystem at the macro- and mesohabitat level. 73 species were recorded. Species associated with small water bodies were most abundant, together with lake species. The most individuals and species were caught in the Phragmites-Close mesohabitat. The fewest individuals were caught in the Phragmites-Typha mesohabitat, and the fewest species in the Chara mesohabitat. Three groups of species associated with particular mesohabitats were recorded: 1) species associated with the Phragmites-Close mesohabitat, 2) species associated with the Thelypteris palustris-Phragmites australis and Phragmites- Typha mesohabitats; 3) species associated with the Chara and Ceratophyllum-Myriophyllum mesohabitats. The high similarity between the fauna of the two lake basins and the marked faunal distinctiveness of the Hydrachnidia assemblages in the small pools on the margins of Lake Świdwie indicate that it was the character of the water bodies that determined the composition of the Hydrachnidia assemblages in each of the macrohabitats of the Świdwie reserve, whereas the influence of their surroundings was negligible. The results obtained confirm our hypothesis that in the highly varied system of water bodies and habitats one can expect substantial diversity of Hydrachnidia. Keywords : lake ecosystem, macrohabitats, mesohabitats, synecological groups, species diversity