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1 Polish Journal of Ecology

1 2009

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The importance of peat excavation water bodies for biodiversity and conservation: a case of three Unionidae [Bivalvia] mussel species

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Ozgo M. , Abraszewska A.

nr 4

793-798

This paper presents populations of Anodonta cygnaea (L.), Anodonta anatina (L.) and Unio pictorum (L.) inhabiting an artificial pond (area 0.3 ha, depth 4 m) formed at a peat excavation site 13 years prior to the collection of the data. The mussels probably colonized the pond as glochidia attached to host fish introduced for angling or migrating with flood waters. The mussel populations were characterized by high densities, high average and maximum shell lengths and high proportions of young individuals. Our study shows that man-made ponds can become favorable habitats for freshwater mussels, and that relatively short time is needed to establish their viable populations. Active conservation of unionid mussels in man-made habitats may require human help at the dispersal stage.