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Wyszukujesz frazę "Węsławski, J. M." wg kryterium: Autor

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Total benthic oxygen uptake in two Arctic fjords (Spitsbergen) with different hydrological regimes
    Autorzy:
    Kotwicki, L.
    Grzelak, K.
    Opalinski, K.
    Weslawski, J.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48291.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    oxygen uptake
    Arctic fjord
    Spitsbergen
    hydrological regime
    organic matter
    biomass
    marine sediment
    benthic organism
    Źródło:
    Oceanologia; 2018, 60, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of bacterial production in the water column between two Arctic fjords, Hornsund and Kongsfjorden (West Spitsbergen)
    Autorzy:
    Ameryk, A.
    Jankowska, K.M.
    Kalinowska, A.
    Weslawski, J.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/47914.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    bacterial production
    environmental factor
    water column
    chlorophyll a
    water temperature
    bacterial biomass
    dissolved organic carbon
    dissolved organic matter
    Arctic fjord
    Spitsbergen
    Kongsfjorden
    Hornsund
    Opis:
    Bacterial production and the accompanying environmental factors were measured in the water columns of two Arctic fjords during the cruise in July and August 2013. Water samples were collected at six stations located in the central part of Hornsund and Kongsfjorden. In Hornsund, where average water temperatures were 1.25-fold lower than in Kongsfjorden, the bacterial production was twice as high (0.116 ± 0.102 vs 0.05 ± 0.03 mg C m−3 h−1). Statistical analysis indicated that chlorophyll a concentration itself was not a significant factor that affected bacterial production, in contrast to its decomposition product, pheophytin, originating from senescent algal cells or herbivorous activity of zooplankton. Single and multiple regression analysis revealed that water temperature, dissolved organic carbon (DOC), and pheophytin concentration were the main factors affecting bacterial production in both fjords.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The malacostracan fauna of two Arctic fjords (West Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components
    Autorzy:
    Legezynska, J.
    Wlodarska-Kowalczuk, M.
    Gluchowska, M.
    Ormanczyk, M.
    Kedra, M.
    Weslawski, J.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48015.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Malacostraca
    plankton
    glacial fjord
    Spitsbergen
    Kongsfjorden
    Hornsund Region
    Atlantic water
    diversity
    distribution
    Opis:
    This study examines the performance of pelagic and benthic Malacostraca in two glacial fjords of west Spitsbergen: Kongsfjorden, strongly influenced by warm Atlantic waters, and Hornsund which, because of the strong impact of the cold Sørkapp Current, has more of an Arctic character. The material was collected during 12 summer expeditions organized from 1997 to 2013. In all, 24 pelagic and 116 benthic taxa were recorded, most of them widely distributed Arctic-boreal species. The advection of different water masses from the shelf had a direct impact on the structure of the pelagic Malacostraca communities, resulting in the clear dominance of the sub-arctic hyperiid amphipod Themisto abyssorum in Kongsfjorden and the great abundance of Decapoda larvae in Hornsund. The taxonomic, functional and size compositions of the benthic malacostracan assemblages varied between the two fjords, and also between the glacier-proximate inner bays and the main fjord basins, as a result of the varying dominance patterns of the same assemblage of species. There was a significant drop in species richness in the strongly disturbed glacial bays of both fjords, but only in Hornsund was this accompanied by a significant decrease in density and diversity, probably due to greater isolation and poorer quality of sediment organic matter in its innermost basin. Our results suggest that the diversity and distribution of benthic malacostracans in these two fjords are only distantly related to the different hydrological regimes; rather, they are governed by locally acting factors, such as depth, sediment type, the variety of microhabitats and the availability and quality of food.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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