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Stan chemiczny jezior w Polsce

Bielczyńska A., Ochocka A.

Przemysł Chemiczny

2016

T. 95, nr 3

340--344

Przedstawiono ocenę stanu chemicznego i skalę zanieczyszczeń wielopierścieniowymi węglowodorami aromatycznymi wód jezior polskich monitorowanych w latach 2011–2014. Na 277 jezior badanych pod kątem stanu chemicznego, przekroczenia środowiskowych norm jakości w zakresie stężenia sumy benzo(g,h,i)perylenu i indeno(1,2,3-cd)pirenu odnotowano w 32 jeziorach znajdujących się w zachodniej części Polski. Podano również potencjalne źródła zanieczyszczeń wód jeziornych wielopierścieniowymi węglowodorami aromatycznymi.

Chem. pollution of 277 lakes particularly with polycyclic arom. hydrocarbons was surveyed in 2011–2014 and assessed in accordance with European Water Framework Directive requirements. The analyses showed exceeded environmental quality stds. in the concns. of (i) the sum of benzo(g,h,i)perylene and indeno(1,2,3-cd)pyrene, (ii) Hg and its compds. and (iii) Cd and its compds., in 32, 6 and 3 lakes, resp., located in western Poland. The (i) and (ii) limit values were simultaneously exceeded in waters of 4 lakes.

Subfossil chydorid taxa and assemblages from lake sediments in Poland and Finland with special reference to climate

Sarmaja-Korjonen K., Szeroczyńska K., Gąsiorowski M.

Studia Quaternaria

2003

Vol. 20

25-34

In this study we compared chydorid cladoceran (Chydoridae) taxa and assemblages from sediments of 6 Polish and 6 Finnish lakes and investigated if the difference in climate of these two countries can be detected in the cladoceran data. The data were analysed in terms of 1) average relative proportions of chydorid taxa during the history of each lake and by 2) redundancy analysis (RDA) to explain the present effect of environmental variables (altitude, area, maximum depth, mean annual temperature, mean summer temperature and length of the growing season) on species abundances. The redundancy analysis (RDA) enabled us to distinguih groups of taxa 1) with a high thermal preference 2) associated with small, cold-water lakes and 3) associated with shallow lakes. There are clear differences in the dominant chydorid taxa and in the relative proportions of many other chydorid taxa between the two countries since the end of the last glaciation. Although these differences first of all appear to reflect the climatic difference, the influence of many other environmental factors, controlling the living conditions of particular chydorids have been raised and considered. Further studies with larger data are needed before the role of climate can be reliably separated from other elements of environment.