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Macrozoobenthos distribution in the coastal zone of the Gulf of Gdańsk - autumn 1994 and summer 1995

100%

Osowiecki A.

tom Vol. 27, No. 4

123-136

The macrozoobenthos investigation carried out in autumn 1994 and summer 1995 along with a review of literature data enabled the author to specify the condition and changes in the bottom macrofauna communities in the Gulf of Gdansk. No substantial changes have been found over the last 30 years. In the 90s, in 1995 in particular, a difficult to interpret increase in abundance and biomass of macrozoobenthos occurred.

Monitoring biologiczny Morza Baltyckiego [BMP HELCOM]

63%

Osowiecki A. , Wolska-Pys M.

1997

nr 13

49-57

Long-term changes in the bottom macrofauna of the Puck Lagoon

63%

Zmudzinski L. , Osowiecki A.

Acta Ichthyologica et Piscatoria. Supplementum

1991

tom 21

Macrozoobenthos of the Gdansk, Gotland and Bornholm Basins in 1978-1993

63%

Osowiecki A. , Warzocha J.

nr 1-2

Preliminary assessment of the eutrophication status of selected areas in the Polish sector of the Baltic Sea according to the EU Water Framework Directive

38%

Łysiak-Pastuszak E. , Osowiecki A. , Filipiak M. , Olszewska A. , Sapota G. , Woroń J. , Krzymiński W.

Oceanologia

2006

tom No. 48 (2)

213-236

The implementation of the European Union Water Framework Directive required a number of tasks to be fulfilled: classifying the various water bodies into different types, defining reference conditions for each of the types and assessing their ecological quality status - this last is based on biological, hydromorphological and physicochemical quality elements of the ecosystem. The paper presents an attempt to estimate reference values in selected areas of Polish coastal and transitional waters as well as in an open sea area following WFD principles. The preliminary eutrophication assessment showed all the assessed areas to be eutrophication problem areas.

Preliminary assessment of the eutrophication status of selected areas in the Polish sector of the Baltic Sea according to the EU Water Framework Directive

38%

Lysiak-Pastuszak E. , Osowiecki A. , Filipiak M. , Olszewska A. , Sapota G. , Woron J. , Krzyminski W.

tom 48

nr 2

The implementation of the European Union Water Framework Directive required a number of tasks to be fulfilled: classifying the various water bodies into different types, defining reference conditions for each of the types and assessing their ecological quality status – this last is based on biological, hydromorphological and physicochemical quality elements of the ecosystem. The paper presents an attempt to estimate reference values in selected areas of Polish coastal and transitional waters as well as in an open sea area following WFD principles. The preliminary eutrophication assessment showed all the assessed areas to be eutrophication problem areas.

Development of tools for ecological quality assessment in the Polish marine areas according to the Water Framework Directive. Part IV - preliminary assessment

32%

Osowiecki A. , Łysiak-Pastuszak E. , Kruk-Dowgiałło L. , Błeńska M. , Brzeska P. , Kraśniewski W. , Lewandowski Ł. , Krzymiński W.

tom Vol. 41, No. 3

1-10

A set of classification methods was developed for the Polish coastal and transitional waters regarding the biological quality elements – phytoplankton, macrophytes and macroinvertebrates as required by the EU Water Framework Directive. Mean summer chlorophyll-a and total summer biomass of phytoplankton were proposed as indicators in the phytoplankton assessment. Macrophytes were assessed by the Macrophyte Quality Assessment Index, including biomass and percent bottom coverage of the selected taxa. Macroinvertebrate assessment was based on a biotic index comprising abundance, dominance structure, taxonomical richness and species sensitivity/tolerance to eutrophication. A preliminary assessment of the ecological status revealed that the coastal and transitional waters failed to reach a "good" ecological status.