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Wyszukujesz frazę "biomass composition" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Microbial plankton communities in the coastal Southeastern Black Sea: biomass, composition and trophic interactions
    Autorzy:
    Aytan, U.
    Feyzioglu, A.M.
    Valente, A.
    Agirbas, E.
    Fileman, E.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/48497.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    phytoplankton
    microzooplankton
    plankton community
    Black Sea
    biomass composition
    trophic interaction
    food web
    grazing
    Źródło:
    Oceanologia; 2018, 60, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of a sheltered euhaline area of the Southeastern Bay of Biscay to sustain bivalve production in terms of phytoplankton community composition
    Autorzy:
    Bilbao, J.
    Muniz, O.
    Rodriguez, J.G.
    Revilla, M.
    Laza-Matinez, A.
    Seoane, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078991.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    phytoplankton community
    phytoplankton composition
    biomass
    physicochemical variation
    aquaculture
    mussel
    Biscay Bay
    Opis:
    This study describes the phytoplankton community in sheltered euhaline waters of the Basque coast (southeastern Bay of Biscay). Phytoplankton composition, cell size, abundance, biomass and the presence of potentially toxic taxa, together with chlorophyll a, nutrients and hydrographic and optical conditions were measured, from August 2016 to August 2017, in the Mutriku port, with the main aim of assessing the suitability of the phytoplankton community as a food resource for bivalves. The water column in Mutriku showed the typical environmental conditions of Basque marine waters, with no significant nutrient enrichment caused by anthropogenic pressures. Haptophytes represented the greatest contribution to cell abundance (31—47%), and diatoms were the dominant group in terms of biomass (52—79%), which could favour mussel growth due to their high fatty acid content. In addition, the size structure of the phytoplankton community was suitable for mussel ingestion, since the predominant cell size was 2—20 μm. Regarding toxic phytoplankton, the genera that pose a risk for human health and those that affect negatively mussel physiology and survival were considered. Altogether, ten toxic phytoplankton taxa were identified, contributing in less than 5% to the total cell abundance of Mutriku. However, median chlorophyll a concentration was low (0.5 μg L−1), reflecting the oligotrophic conditions of the area. Therefore, even if the composition of the phytoplankton community could be favourable for bivalve aquaculture, biomass values are low compared to other zones of bivalve production.
    Źródło:
    Oceanologia; 2021, 63, 1; 12-26
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of wild forest fires in Eastern Europe on aerosol composition and particle optical properties
    Autorzy:
    Zielinski, T.
    Petelski, T.
    Strzalkowska, A.
    Pakszys, P.
    Makuch, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/49098.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    aerosol optical property
    biomass burning
    Baltic area
    Eastern Europe
    Baltic Sea
    aerosol composition
    Źródło:
    Oceanologia; 2016, 58, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seasonal dynamics of phytoplankton in the inner Neva Estuary in the 1980s and 1990s
    Autorzy:
    Nikulina, V.N.
    Powiązania:
    https://bibliotekanauki.pl/articles/47983.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    species composition
    biomass
    Neva River
    alga
    blue-green alga
    Oscillatoria
    phytoplankton
    Neva Estuary
    seasonal dynamics
    Opis:
    The phytoplankton in the inner Neva Estuary is described from data obtained from 1996 to 2000.T he seasonal dynamics of the phytoplankton biomass are characterized by a bimodal curve with a summer maximum.T he average seasonal biomass was approximately 3 mg l−1, the maximum biomass was 8–11 mg l−1. The species composition and quantitative parameters were compared to those observed in the 1980s.A notable, nearly 1.5–2 fold, increase in the biomass in the summer–autumn period and the predominance of Oscillatoria species among the blue-green algae were observed.A decline in the nutrient load in the water body at the end of the 1990s appeared to be insufficient to bring about a decrease in the proportion of Oscillatoria algae in the total species composition or a decline in the biomass of the entire phytoplankton community. In 2000 a certain change in the structural composition of the phytoplankton complex was noted.S pecies that had been predominant in the 1980s and had lost their advantage in the early 1990s, regained their earlier status.
    Źródło:
    Oceanologia; 2003, 45, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mapping an ecosystem service: A quantitative approach to derive fish feeding ground maps
    Autorzy:
    Siaulys, A.
    Daunys, D.
    Bucas, M.
    Bacevicius, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/47814.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    seabed quality
    macrozoobenthos
    mapping
    ecosystem service
    quantitative approach
    fish feed
    biomass distribution
    diet composition
    aquatic ecosystem
    Baltic Sea
    Opis:
    This study presents a quantitative approach to mapping benthophagous fish feeding grounds. This approach combines the spatial biomass distribution of benthic prey items and their importance for the diets of predators. A point based biomass data of macrozoobenthos together with a set of environmental factors was used to develop Random Forests models that produce continuous biomass distribution layers for individual prey species. Depending on the diet composition and the importance of prey for fish feeding, these layers are overlaid and an integrated GIS map of the seabed showing the quality of feeding grounds is generated. These maps provide a useful basis for conservation and marine spatial planning. In addition, this method could be applied to the mapping of resources used by other benthophagous organisms. The method is presented using the example of three common Baltic fish species: cod, flounder and viviparous eelpout.
    Źródło:
    Oceanologia; 2012, 54, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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