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    Wyświetlanie 1-3 z 3
    Tytuł:
    Annual cycle of phytoplankton community through the water column: Study applied to the implementation of bivalve offshore aquaculture in the Southeastern Bay of Biscay
    Autorzy:
    Muniz, O.
    Revilla, M.
    Rodriguez, J.G.
    Laza-Martinez, A.
    Fontan, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/47941.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    phytoplankton community
    water column
    open water
    bivalve
    biomass
    chlorophyll a
    nutrient
    hydrographic condition
    environmental variability
    Biscay Bay
    Źródło:
    Oceanologia; 2019, 61, 1
    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:
    Inhomogeneity detection in phytoplankton time series using multivariate analyses
    Autorzy:
    Muniz, O.
    Rodriguez, J.G.
    Revilla, M.
    Laza-Martinez, A.
    Seoane, S.
    Franco, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079181.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    phytoplankton community
    monitoring programme
    uncertainty
    multivariate analysis
    inhomogeneity
    Opis:
    Phytoplankton communities have long been used as water quality indicators within environmental policies. This has fostered the development of national and international phytoplankton monitoring programs, but these networks are subject to sources of uncertainty due to laboratory issues. Nevertheless, studies regarding the interference associated with these aspects are not well-documented. Hence, a long time series (2003–2015) from the Basque continental shelf (southeastern Bay of Biscay) was analyzed to evaluate the uncertainty given by laboratory strategies when studying phytoplankton variability. Variability in phytoplankton communities was explained not only by environmental conditions but also by changes in fixatives (glutaraldehyde and acidic Lugol's solution) and laboratory staff. Based on Bray-Curtis distances, phytoplankton assemblages were found to be significantly dissimilar according to the effect of changes in the specialist handling the sample and the employed fixative. The pair-wise permutational multivariate analysis of variance (PERMANOVA) showed significant differences between the two fixatives utilized and also between the three taxonomists involved. Thus, laboratory-related effects should be considered in the study of phytoplankton time series.
    Źródło:
    Oceanologia; 2020, 62, 3; 243-254
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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