Oceanological and Hydrobiological Studies
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Four small-celled Planothidium species from Central Europe proposed as new to science
Oceanological and Hydrobiological Studies - Tập 43 - Trang 346-359 - 2015
Four small-celled taxa are presented and described — Planothidium werumianum, P. pumilum, P. rhombiculum and P. rostratoholarcticum. Planothidium werumianum, P. pumilum and P. rhombiculum are proposed as new to science and P. rostratoholarcticum as a new name for Achnanthes lanceolata var. rostrata Hustedt 1911. The latter, coming from Germany, is transferred to Planothidium in the species rank. T......
The story of one clam. Probably the oldest location of the Chinese pond mussel Sinanodonta woodiana (Lea, 1834) (Bivalvia, Unionidae) in Poland
Oceanological and Hydrobiological Studies - Tập 41 - Trang 41-45 - 2011
The discovery of a shell of the Chinese pond mussel in 1998 and further confirmation of this species indicate that a reservoir with natural thermal conditions is the oldest species location in Poland. Growth increments of an archival shell do not fall within the ranges obtained by this species in Konin lakes. They are, however, close to population ranges from Hungary. In contrast to other specimen......
Polyphasic characterization of the genus Anabaena from the Gulf of Gdańsk (Southern Baltic Sea). Application of DGGE in taxonomic studies on environmental samples
Oceanological and Hydrobiological Studies - Tập 41 - Trang 64-78 - 2012
The aim of this paper was a taxonomic verification of cyanobacteria of the genus Anabaena that occur in the Gulf of Gdańsk. Classical taxonomic methods were combined with modern molecular taxonomic methods (polyphasic approach). Analysis of the species diversity of cyanobacteria from the genus Anabaena was based on the microscopic analysis and on the analysis of 16S rRNA and ITS region. Comparison......
Relationships between epipelic diatoms, aquatic macrophytes, and water quality in Akarçay Stream, Afyonkarahisar, Turkey
Oceanological and Hydrobiological Studies - Tập 41 - Trang 74-84 - 2011
The Akarçay is the most important stream in the Afyonkarahisar region in central Turkey. In this study, the relationships between epipelic diatoms, macrophytes, and the water quality of Akarçay Stream are presented. According to Canonical Correspondence Analysis (CCA), BOD5, COD, TDS, NH4-N, NO2-N, and PO4-P had the most significant effects on the diatom and macrophyte community structures of the ......
New data on the parasites of the Eurasian otter (Lutra lutra)
Oceanological and Hydrobiological Studies - Tập 43 - Trang 1-6 - 2014
The Eurasian otter Lutra lutra (Linnaeus, 1758) is a typical representative of carnivorous mammals from the family of mustelids (Mustelidae) which are closely connected with aquatic ecosystems. Parasitofauna of the otter is poorly identified, e.g. only two specimens have been examined in Poland for the presence of parasites. Currently, three species of parasites were found in one otter: the nemato......
Effect of extremely severe winters on under-ice phytoplankton development in a mesotrophic lake (Eastern Poland)
Oceanological and Hydrobiological Studies - Tập 43 - Trang 147-153 - 2014
The research was carried out in a mesotrophic and dimictic lake during winters with ice cover. In the last forty years, the development of phytoplankton was analyzed in five extreme winter seasons. The studies of phytoplankton characteristics in the water column took into account values of biomass, concentration of chlorophyll-a and species composition, including dominant species. Differences in t......
Composition and dynamics of potentially toxic dinoflagellates in a shallow Mediterranean lagoon
Oceanological and Hydrobiological Studies - Tập 41 - Trang 25-35 - 2012
The population dynamics of harmful microalgae was investigated in the semi-enclosed shallow lagoon, Tunis northern lagoon (South Mediterranean), during a 1-year period from January to December 2007. A total number of 16 potentially toxic dinoflagellates were identified. Density of each species was analyzed in time and space and in relation to environmental parameters. Some species such as Alexandr......
Gas chromatographic-mass spectrometric investigation of the chemical composition of the aquatic plant Wolffia arrhiza (Lemnaceae)
Oceanological and Hydrobiological Studies - Tập 42 - Trang 181-187 - 2013
The ether and methanol extracts of Wolffia arrhiza (Lemnaceae) were analyzed using high resolution capillary gas chromatography coupled with mass spectrometry (GC-MS). The ether extract contains 32 compounds, mostly lipids and sterols, among which β-sitosterol is most prevalent. This is the first evidence of β-sitosterol detection in W. arrhiza. The most representative group of polar compounds of ......
Polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and pentachlorophenol (PCP) in bottom sediments of the Port of Gdansk
Oceanological and Hydrobiological Studies - Tập 43 - Trang 312-323 - 2014
Combustion processes are considered to be the main source of the dioxin emission in the Baltic region. Pentachlorophenol (PCP) and its derivatives, pentachlorophenyl laurate (PCPL) and sodium pentachlorophenate (NaPCP) are known as precursors of dioxins. The research was conducted to obtain the first data on the concentration of PCDD/Fs and PCP in the bottom sediments of the Port of Gdansk. Toxici......
Warm currents affecting the spring and winter distributions of living coccolithophores in the Yellow Sea, China
Oceanological and Hydrobiological Studies - Tập 42 - Trang 431-441 - 2014
Spring and winter distributions of living coccolithophores in the Yellow Sea were studied using a polarizing microscope based on two surveys in April 2010 and January 2011. Nine species were recorded, including Emiliania huxleyi and Gephyrocapsa oceanica as the predominant forms. The cell abundance of all coccolithophores in the spring was significantly higher than in the winter (p<0.01), with mea......
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