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The genetic characteristic of seriously threatened river lamprey Lampetra fluviatilis L. from Vistula river and Vistula lagoon (Poland) was described in the present paper. The study, based on the nine microsatellite markers, was conducted to determine the genetic diversity and population structure of river lamprey in Vistula river and Vistula lagoon in Poland. Observed heterozygosity ranged from 0...
Angling is one of the most popular forms of recreation in Poland. The aim of the present work was an evaluation of angling potential of chosen lakes in the Olsztyńskie Lake District. Multidimensional comparative analysis was applied in this study. The study included 19 lakes. In the final assessment lakes Tejstymy, Tumiańskie and Dadaj achieved the highest potential for angling with values of synthetic...
Our study was carried out in the middle basin of the Biebrza River (NE Poland) in the periods of June and September in 2011 and 2012. From among numerous side-arms, four objects have been selected for analyses of macrozoobenthos structure and biomass. Two lakes exhibited a lentic character due to a long-lasting isolation from the river channel, one presented a lotic, and one was of a semi-lotic character...
The fate of phytoplankton communities in different hydrological and hydrochemical conditions was studied in the middle basin of the Biebrza River (NE Poland). Our results showed that hydrological connectivity significantly influenced phytoplankton abundance in floodplain lakes: minimal abundance was stated in lotic and maximal in lentic waterbodies. Phytoplankton diversity and species richness were...
This study analysed the rearing of Black Molly Poecilia hybrids. It is a crossbreed of sailfin molly Poecilia latipinna and short-finned molly Poecilia sphenops. Black mollies are very popular aquarium fish which are frequently put into marine aquaria to speed up the maturation of such aquaria. Without being acclimatised to high salinity, the fish are put into water with a salinity of SG 1.025 or...
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