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    Wyświetlanie 1-13 z 13
    Tytuł:
    Amphipods in estuarine and marine quality assessment – a review
    Autorzy:
    Podlesinska, W.
    Dabrowska, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/48648.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    amphipod
    marine sediment
    aquatic ecosystem
    ecological quality
    estuary
    bioassay
    abiotic factor
    biological factor
    Źródło:
    Oceanologia; 2019, 61, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    In situ measurements and satellite remote sensing of case 2 waters: first results from the Curonian Lagoon
    Autorzy:
    Giardino, C.
    Bresciani, M.
    Pilkaityte, R.
    Bartoli, M.
    Razinkovas, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48042.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    satellite remote sensing
    satellite image
    water
    Curonian Lagoon
    eutrophication
    calibration
    validation
    eutrophic ecosystem
    aquatic ecosystem
    Baltic Sea
    Opis:
    In this study we present calibration/validation activities associated with satellite MERIS image processing and aimed at estimating chl a and CDOM in the Curonian Lagoon. Field data were used to validate the performances of two atmospheric correction algorithms, to build a band-ratio algorithm for chl a and to validate MERIS-derived maps. The neural network-based Case 2 Regional processor was found suitable for mapping CDOM; for chl a the band-ratio algorithm applied to image data corrected with the 6S code was found more appropriate. Maps were in agreement with in situ measurements. This study confirmed the importance of atmospheric correction to estimate water quality and demonstrated the usefulness of MERIS in investigating eutrophic aquatic ecosystems.
    Źródło:
    Oceanologia; 2010, 52, 2; 197-210
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of iron limitation on cells of the diatom Cyclotella meneghiniana Kützing
    Autorzy:
    Lewandowska, J.
    Kosakowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/47921.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    iron
    chlorophyll a
    cell
    Cyclotella meneghiniana
    protein
    aquatic ecosystem
    Baltic Sea
    growth
    diatom
    limitation
    Opis:
    The response of the Baltic diatom Cyclotella meneghiniana to iron deficiency was examined. The following growth parameters were measured: cell number, chlorophyll a and protein content. The results demonstrate the ability of this diatom to grow well with minimal iron availability; however, the rate of growth fell markedly at the lowest iron(III) concentration. The results of spectrophotometric chlorophyll a measurements and protein assays using the Lowry and Bradford methods indicated a significant decrease in their quantities. Iron may therefore be an important regulatory factor controlling the growth of diatom C. meneghiniana in an aquatic ecosystem.
    Źródło:
    Oceanologia; 2004, 46, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic characteristics of three Baltic Zostera marina populations
    Autorzy:
    Gonciarz, M.
    Wiktor, J.
    Tatarek, A.
    Weglenski, P.
    Stankovic, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48768.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Baltic Sea
    Zostera marina
    eelgrass population
    genetic characteristics
    polymorphism
    microsatellite
    population genetics
    aquatic ecosystem
    Źródło:
    Oceanologia; 2014, 56, 3
    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
    Tytuł:
    Toxic Nodularia spumigena blooms in the coastal waters of the Gulf of Gdańsk: a ten-year survey
    Autorzy:
    Mazur-Marzec, H.
    Krezel, A.
    Kobos, J.
    Plinski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48080.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Cyanoprokaryota
    remote sensing
    coastal water
    nodularin
    hepatotoxin
    Nodularia spumigena
    water quality
    bloom
    aquatic ecosystem
    Gdansk Gulf
    Opis:
    In the Baltic Sea, summer blooms of the filamentous, nitrogen-fixing cyanobacterium Nodularia spumigena are favoured by high P concentrations at low N:P ratios and a salinity range of 5–13 PSU. The blooms are initiated by calm and sunny weather, an elevated surface water temperature and thermal stratification. The mass occurrence of N. spumigena in coastal waters is a matter of special concern, as the cyanobacterium produces nodularin, a potent pentapeptide hepatotoxin. In the Gulf of Gdańsk, the large-scale occurrence of N. spumigena was recorded for the first time in 1994. Blooms of a similar intensity occurred in 2001, 2003 and 2004. Nodularin concentrations in freeze-dried bloom samples varied from 0.01 to 4.01 mg g−1 d.w. In the coastal waters of the Gulf of Gdańsk, cell-bound nodularin concentrations in 2004 and 2005 attained maxima of 25 852±107 μg dm−3 and 3964±125 μg dm−3, respectively. Microscopic analysis revealed the presence of diverse Nodularia forms, with the dominance of curved filaments in bloom samples. The results of in situ studies and remote sensing measurements indicate a high frequency and intensity of cyanobacterial blooms in the Gulf of Gdańsk in the last ten years.
    Źródło:
    Oceanologia; 2006, 48, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphology and distribution of phage-like particles in a eutrophic boreal lagoon
    Autorzy:
    Sulcius, S.
    Staniulis, J.
    Paskauskas, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/47555.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    aquatic ecosystem
    Baltic Sea
    biodiversity
    Curonian Lagoon
    distribution
    electron microscopy
    morphology
    pelagic ecosystem
    spatial distribution
    virus
    virus-like particle
    Opis:
    In this paper we present the results of direct observations of the morphology and size of phage-like particles by means of transmission electron microscopy (TEM) as a function of their spatial distribution in the shallow highly productive Curonian Lagoon of the Baltic Sea. In total, 26 morphologically different forms of phagelike particles were found. Different trends of distribution in terms of abundance, size and shape of virus-like particles were demonstrated. The total abundance of viruses varied from 1.91×107 ml−1 to 5.06×107 ml−1. The virus to bacteria ratio (VBR) changed from 15.6 to 49 and was negatively associated with total bacterial numbers (r = −0.60; p < 0.05). The phages of family Myoviridae were the most diverse and were dominant at all stations.
    Źródło:
    Oceanologia; 2011, 53, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phytoplankton size structure and species composition as an indicator of trophic status in transitional ecosystems: the case study of a Mediterranean fjord-like karstic bay
    Autorzy:
    Bosak, S.
    Silovic, T.
    Ljubesic, Z.
    Kuspilic, G.
    Pestoric, B.
    Krivokapic, S.
    Vilicic, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/48711.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    phytoplankton community
    size structure
    species composition
    trophic status
    ecosystem
    aquatic ecosystem
    picophytoplankton
    Adriatic Sea
    Boka Kotorska Bay
    karstic bay
    Opis:
    The species composition and size-structure of the phytoplankton community in the Boka Kotorska Bay (SE Adriatic Sea) were analysed with respect to abundance and carbon biomass, together with the physico-chemical parameters, with the aim of evaluating the predefined oligo-mesotrophic status of this transitional water ecosystem. Three stations located in the inner part of the Bay were sampled with seasonal frequency in 2008/2009. Picophytoplankton cells were counted using flow cytometry; nanophytoplankton and microphytoplankton were identified and counted by light microscopy. The relative importance of the picoplankton in the Bay, in terms of both abundance and biomass, during all the investigated seasons emphasized their significance in the phytoplankton community. Picocyanobacteria (Synechococcus) constituted a significant part of the summer assemblages with regard to both abundance (up to 3.38 × 108 cells L−1) and carbon biomass (up to 73% of total phytoplankton carbon). The contribution of the nanophytoplankton was found to be generally low (<20% of the total phytoplankton carbon) in all seasons, and was dominated by autotrophic/mixotrophic flagellates. Species with a preference towards nutrient-enriched conditions, like the diatom Skeletonema marinoi, dominated the microphytoplankton fraction. S. marinoi was the most abundant in spring/winter (up to 2.86×106 cells L−1) above the halocline (making a 96% contribution to the microphytoplankton). The potentially toxin-producing diatom Pseudo-nitzschia pseudodelicatissima was recorded at abundances greater than 105 cells L−1, together with Thalassionema frauenfeldii, as well as the dinoflagellates Prorocentrum micans and the potentially harmful P. minimum. The higher values of phytoplankton biomass and the dominance of phytoplankton species or groups with preferences for nutrient-enriched conditions appear to be consistent with the oligo-mesotrophic status of this specific ecosystem.
    Źródło:
    Oceanologia; 2012, 54, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ecosystem of the Polish part of the Vistula Lagoon from the perspective of alternative stable states concept, with implications for management issues
    Autorzy:
    Kornijow, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/958165.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    aquatic ecosystem
    Vistula Lagoon
    phytoplankton
    macrophyte
    macroinvertebrate
    zooplankton
    fish
    bird
    nutrient concentration
    coastal management
    Baltic Sea
    Źródło:
    Oceanologia; 2018, 60, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Protozoa in a stressed area of the Egyptian Mediterranean coast of Damietta, Egypt
    Autorzy:
    Dorgham, M.M.
    El-Tohamy, W.S.
    Abdel-Aziz, N.E.
    El-Ghobashi, A.
    Qin, J.G.
    Powiązania:
    https://bibliotekanauki.pl/articles/49061.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    environment condition
    pollution indicator
    tintinnid
    Protozoa
    Egyptian Mediterranean coast
    Egypt
    Diametta coast
    aquatic ecosystem
    coastal water
    eutrophication
    Źródło:
    Oceanologia; 2013, 55, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Primary productivity in the Gulf of Riga (Baltic Sea) in relation to phytoplankton species and nutrient variability
    Autorzy:
    Purina, I.
    Labucis, A.
    Barda, I.
    Jurgensone, I.
    Aigars, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/49057.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    primary production
    aquatic ecosystem
    Riga Gulf
    Baltic Sea
    phytoplankton biomass
    chlorophyll a
    nutrient
    Mesodinium rubrum
    Aphanizomenon flos-aquae
    Źródło:
    Oceanologia; 2018, 60, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the local abiotic environment, weather and regional nutrient loading on macrobenthic invertebrate feeding groups in a shallow brackish water ecosystem
    Autorzy:
    Veber, T.
    Kotta, J.
    Lauringson, V.
    Kotta, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/48139.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    abiotic environment
    brackich water ecosystem
    depth
    feeding group
    macrobenthic invertebrate
    regional nutrient
    sediment type
    shallow water
    slope inclination
    aquatic ecosystem
    wave exposure
    weather
    Opis:
    This study evaluated the extent to which depth, sediment type, exposure to waves and coastal slope inclination modulate the relationships between regional nutrient loading, weather patterns and the species composition and dominance structure of macrobenthic invertebrate feeding groups in a brackish water ecosystem of the Baltic Sea. Irrespective of feeding function, the species composition and dominance structure of benthic invertebrate communities were determined by local abiotic variables such as exposure, depth and sediment type. Regional weather variables (average southerly winds, salinity, water temperature, ice conditions) either separately or interactively contributed to the variability of benthic invertebrates. Nutrient loading had significant effects on benthic invertebrates only in interactions with local abiotic or regional weather variables. Herbivores, deposit feeders and suspension feeders exhibited a stronger response to the studied environmental variables than carnivores. All this suggests that (1) the dynamic coastal habitats studied in this work are not very sensitive to shifts in nutrient loading and (2) local abiotic conditions and weather patterns largely define the observed biotic patterns. We believe that the benthic invertebrate time series will only be a better reflection of the nutrient loading signal if more years covering extreme events are included.
    Źródło:
    Oceanologia; 2009, 51, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biocontamination of the Western Vistula Lagoon (South-Eastern Baltic Sea, Poland)
    Autorzy:
    Jablonska-Barna, I.
    Rychter, A.
    Kruk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48633.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Vistula Lagoon
    zoobenthos
    aquatic ecosystem
    brackish water body
    Baltic Sea
    Polska
    biological contamination
    macrobenthos
    biodiversity
    alien species
    benthic macrofauna
    Źródło:
    Oceanologia; 2013, 55, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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