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2013•Teka Komisji Ochrony i Kształtowania Środowiska PrzyrodniczegoRequires access

Distribution of zoobenthos between littoral and middle lake zone in two shallow lakes of different trophic status

Monika Tarkowska−Kukuryk, Tomasz Mieczan, Jacek Rechulicz, Wojciech Pęczuła

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Abstract

Summary. Zonal distribution, taxonomic richness and densities of zoobenthos were studied in two shallow lakes of Polesie Lubelskie; eutrophic Lake Sumin and hypertrophic Lake Syczy�� skie. Bottom fauna was collected in May, July and October of 2010 from littoral and middle lake zones. Taxonomic composition and abundance of bottom fauna were significantly affected by lake zone and trophic status of lake. The highest taxonomic diversity of zoobenthos, in both studied lakes was observed in littoral zone. Density of bottom fauna showed the highest values in middle lake (profundal) zone of hypertrophic lake. In the littoral zone, zoobenthos was represented mostly by larvae of Chironomidae, in middle lake zone high abundances showed larvae of Chaoboridae. Taxonomic composition and abundances of bottom fauna indicate a visible distinction between littoral and middle lake zone in lakes of different trophic status.

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Summary. Zonal distribution, taxonomic richness and densities of zoobenthos were studied in two shallow lakes of Polesie Lubelskie; eutrophic Lake Sumin and hypertrophic Lake Syczy�� skie. Bottom fauna was collected in May, July and October of 2010 from littoral and middle lake zones. Taxonomic composition and abundance of bottom fauna were significantly affected by lake zone and trophic status of lake. The highest taxonomic diversity of zoobenthos, in both studied lakes was observed in littoral zone. Density of bottom fauna showed the highest values in middle lake (profundal) zone of hypertrophic lake. In the littoral zone, zoobenthos was represented mostly by larvae of Chironomidae, in middle lake zone high abundances showed larvae of Chaoboridae. Taxonomic composition and abundances of bottom fauna indicate a visible distinction between littoral and middle lake zone in lakes of different trophic status.

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Available abstract

Summary. Zonal distribution, taxonomic richness and densities of zoobenthos were studied in two shallow lakes of Polesie Lubelskie; eutrophic Lake Sumin and hypertrophic Lake Syczy�� skie. Bottom fauna was collected in May, July and October of 2010 from littoral and middle lake zones. Taxonomic composition and abundance of bottom fauna were significantly affected by lake zone and trophic status of lake. The highest taxonomic diversity of zoobenthos, in both studied lakes was observed in littoral zone. Density of bottom fauna showed the highest values in middle lake (profundal) zone of hypertrophic lake. In the littoral zone, zoobenthos was represented mostly by larvae of Chironomidae, in middle lake zone high abundances showed larvae of Chaoboridae. Taxonomic composition and abundances of bottom fauna indicate a visible distinction between littoral and middle lake zone in lakes of different trophic status.

Key concepts: Littoral zone, Profundal zone, Fauna, Trophic level, Ecology, Eutrophication, Species richness, Chironomidae

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Distribution of zoobenthos between littoral and middle lake zone in two shallow lakes of different trophic status — Research Paper | ScholarLens