217 research outputs found

    Impact of the Jeziorsko Dam Reservoir on phytoplankton in the middle Warta River course

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    Phytoplankton was investigated in two localities in the Warta River located upstream and downstream of the Jeziorsko Dam Reservoir. Spring and summer peaks of algal development, dominated by diatoms (Bacillariophyceae) (66.7 to 81.0% of total phytoplankton abundance), were recorded. Green algae (Chlorophyta) constituted 7.7 to 38.4% while blue-green algae (Cyanophyia) from 1.3 to 13.3% of total phytoplankton abundance. The percentages of other algal groups were low. Correlations between the abundance of phytoplankton and temperature, concentration of nitrate nigrogen and phosphorus in water were determined. The occurrence of taxons abundantly inhabiting either both localities or individually associated with only one of them was recorded.Zadanie pt. Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej naukę

    Characterization of phytoplankton in the Sulejów Reservoir in 1991-1993

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    In 1991-1993 phytoplankton was investigated in the Sulejów Reservoir. In spring and autumn two peaks and additionally in summer 1992 one peak of development were noted, characterized by average biomass values of 8.1 to 33.4 mg dm^-3. In general, diatoms prevailed, mainly Stephanodiscus hantzschii Grun. and Melosira granulta (Ehr.). When their numbers fell the dominants were plant flagellates. The blue-green algae (Cyanophyta) were high only in several months in summer and early autumn, their chief components being Microcystis aeruginosa Kutz. and Aphanisomenon flos-aquae (L.) Ralfs. The seasonal dynamics of zooplankton development was also observed and at the some time its feeding pressure on the phytoplankton was the determined.Zadanie pt. Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej naukę

    General Characterization of Phytoplankton in the Sulejów Reservoir in 1988-1990

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    In 1988-1990 phytoplankton was investigated in the Sulejów Reservoir. Two developmental peaks were recorded: a spring and an autumn ones; each of them was dominated by diatoms, which constituted 80.0 to 97.5% of total phytoplankton abundance. In all months Siephanodiscus hantzschii Grun. was the dominant species. The subdominants were phytoflagellates, whose intensive development was observed in the period of a decrease in diatom abundance and a decline in abundance in the period of zooplankton domination. Zooplankton was dominated by Daphnia cucullata and Bosmina coregoni.Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej naukę

    Phytoplankton communities in the Sulejów Reservoir in 1996—1997

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    The phytoplankton in the Sulejów Reservoir in 1996-1997 was dominant in spring and autumn by diatoms. The cyanobacteria were high only in several months in summer and early autumn. Biomass values was of 0.3 to 63.4 mg dm^˗3­. The most abundant were Stephanodiscus hantzschii (Grun.), Aulacoseira granulatu (Ehr.) Simonsen, Asterionella formosa (Hass.), Cyclotella comta (Ehr.) Kutz of diatoms, Trachelomonas volvocina Ehr of euglenids, Pediastrum boryanum (Turp.) Meenegh., Scenedesmus quadricauda (Turp.) Breb. Staurastrum sp. of green algae and M¡crocLstis aeruginosa Kutz and Aphanisozomenon flos-aquae (L.) Ralfs. of cyanobacteria. Corelations between the biomass of phytoplankton and temperature, pH, concentration of nitrate nitrogen and phosphorus in water were determined.Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej naukę

    ConsensusPathDB: toward a more complete picture of cell biology

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    ConsensusPathDB is a meta-database that integrates different types of functional interactions from heterogeneous interaction data resources. Physical protein interactions, metabolic and signaling reactions and gene regulatory interactions are integrated in a seamless functional association network that simultaneously describes multiple functional aspects of genes, proteins, complexes, metabolites, etc. With 155,432 human, 194,480 yeast and 13,648 mouse complex functional interactions (originating from 18 databases on human and eight databases on yeast and mouse interactions each), ConsensusPathDB currently constitutes the most comprehensive publicly available interaction repository for these species. The Web interface at http://cpdb.molgen.mpg.de offers different ways of utilizing these integrated interaction data, in particular with tools for visualization, analysis and interpretation of high-throughput expression data in the light of functional interactions and biological pathways
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