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  • Oxford Univ. Press  (23)
  • Berlin, Heidelberg :Springer Berlin / Heidelberg,  (3)
  • British Ecological Society  (2)
  • 1
    Online Resource
    Online Resource
    Competition and Coexistence. (2002)
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Details
    Keywords: Competition (Biology). ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (231 pages)
    Edition: 1st ed.
    ISBN: 9783642561665
    Series Statement: Ecological Studies ; v.161
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=3089858
    DDC: 577.83000000000004
    Language: English
    Note: Ecological Studies, Vol. 161 -- Competition and Coexistence -- Copyright -- Preface -- Contents -- Contributors -- 1 Introduction -- 2 Competition in Well-Mixed Habitats: From Competitive Exclusion to Competitive Chaos -- 3 Spatial Models of Competition -- 4 Competition and Coexistence in Plankton Communities -- 5 Competition and Coexistence of Mobile Animals -- 6 Competition, Coexistence and Diversity on Rocky Shores -- 7 Competition and Coexistence in Terrestrial Plants -- 8 Synthesis: Back to Santa Rosalia, or No Wonder There Are So Many Species -- Subject Index.
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    GEOMAR EBL
  • 2
    Online Resource
    Online Resource
    Plankton Ecology : Succession in Plankton Communities. (2012)
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Details
    Keywords: Plankton--Ecology. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (378 pages)
    Edition: 1st ed.
    ISBN: 9783642748905
    Series Statement: Brock Springer Series in Contemporary Bioscience Series
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=3093939
    DDC: 574.91999999999996
    Language: English
    Note: Plankton Ecology -- Copyright -- Contents -- Contributors -- Preface -- 1 Toward a Darwinian Ecology of Plankton -- 2 Physical Determinants of Phytoplankton Succession -- 3 The Role of Competition for Resources in Phytoplankton Succession -- 4 The Role of Grazers in Phytoplankton Succession -- 5 The Role of Fungal Parasites in Phytoplankton Succession -- 6 The Role of Competition in Zooplankton Succession -- 7 The Role of Predation in Zooplankton Succession -- 8 Toward an Autecology of Bacterioplankton -- 9 The Role of Grazing on Bacteria in Plankton Succession -- Index.
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    GEOMAR EBL
  • 3
    Online Resource
    Online Resource
    Algen, Quallen, Wasserfloh : Die Welt des Planktons. (1996)
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Details
    Keywords: Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (202 pages)
    Edition: 1st ed.
    ISBN: 9783642610332
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=6856792
    Language: German
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    GEOMAR EBL
  • 4
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    Overwintering effects on the spring bloom dynamics of phytoplankton (2017)
    Oxford Univ. Press
    In:  Journal of Plankton Research, 39 (5). pp. 772-780.
    Details
    Publication Date: 2020-02-06
    Description: The influence of winter on the selection of dominant taxa for the phytoplankton spring bloom was studied in batch culture experiments. Different natural phytoplankton assemblages from different phases of the temperate zone winter were exposed to varying periods of darkness (0, 6/7, 13 and 19 weeks) followed by a re-exposure to saturating light intensity for 14 days to experimentally simulate the onset of spring. The results showed that dark incubation has a strong effect on shaping the phytoplankton community composition. Many taxa disappeared in the absolute darkness. Dark survival ability might be an important contributing factor for the success of diatoms in spring. Different phytoplankton starting assemblages were dominated by the same bloom-forming diatoms, Skeletonema marinoi and Thalassosira spp., after dark incubation for only 6 weeks, irrespective of the high dissimilarities between phytoplankton communities. The growth capacity of surviving phytoplankton is almost unimpaired by darkness. Similar growth rates as that before darkness could be resumed for the surviving taxa with a potential lag time of 1–7 days dependent on taxon and the duration of darkness.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    Format: image
    Format: text
    DOI: 10.1093/plankt/fbx046
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 5
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    Quantifying top-down control and ecological traits of the scyphozoan Aurelia aurita through a dynamic plankton model (2018)
    Oxford Univ. Press
    In:  Journal of Plankton Research, 40 (6). pp. 678-692.
    Details
    Publication Date: 2021-02-08
    Description: Aurelia aurita (Linneaus, 1758) is a cosmopolitan scyphozoan, probably the most investigated jellyfish in temperate and highly productive coastal ecosystems. Despite a prominent top-down control in plankton food webs, a mechanistic understanding of A. aurita population dynamics and trophic interactions has been barely addressed. Here we develop a food web dynamic model to assess A. aurita role in the seasonal plankton dynamics of the Kiel Fjord, southwestern Baltic Sea. The model couples low trophic level dynamics, based on a classical Nutrient Phytoplankton Zooplankton Detritus (NPZD) model, to a stage-resolved copepod model (referencing Pseudocalanus sp.) and a jellyfish model (A. aurita ephyra and medusa) as consumers and predators, respectively. Simulations showed the relevance of high abundances of A. aurita, which appear related with warm winter temperatures, promoting a shift from a copepod-dominated food web to a ciliate and medusa dominated one. The model captured the intraspecific competition triggered by the medusae abundance and characterized by a negative relationship between population density and individual size/weight. Our results provide a mechanistic understanding of an emergent trait such as size shaping the food web functioning, driving predation rates and population dynamics of A. aurita, driving its sexual reproductive strategy at the end of the pelagic phase.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Format: text
    Format: image
    DOI: 10.1093/plankt/fby041
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 6
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    Light effects on phytoplankton morphometric traits influence nutrient utilization ability (2018)
    Oxford Univ. Press
    In:  Journal of Plankton Research, 40 (5). pp. 568-579.
    Details
    Publication Date: 2021-02-08
    Description: Light and nutrients are essential resources for phytoplankton growth and considered to shape the size structure and other morphometric traits (surface:volume ratio, deviation from spherical shape) of phytoplankton communities. If morphometric traits influence the growth and resource use, shifts by one of the two factors should influence the capability to utilize the other factor. We performed a two-step experiment, where a natural phytoplankton community was first exposed to three different light levels (supposed to be limiting, saturating and slightly inhibiting for the majority of species) and grown until stationary phase. Then, the pre-conditioned communities were split into two nutrient treatments (control and saturating nutrient pulse) and again grown until stationary phase under the medium light intensity. During the experimental light phase, community mean cell-size increased with light, but surface:volume ratio and deviation from spherical shape decreased. Moreover, in response to the following nutrient pulse, the low light pre-conditioned communities showed the highest initial growth rates in response to the nutrient pulse. The high light pre-conditioned communities showed the highest conversion of the nutrient pulse into biomass during the stationary phase. These results demonstrate how the imprint of one environmental factor on trait distribution influences the ability to cope with another.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1093/plankt/fby037
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 7
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    Effects of high CO2 and warming on a Baltic Sea microzooplankton community (2016)
    Oxford Univ. Press
    In:  ICES Journal of Marine Science, 73 (3). pp. 772-782.
    Details
    Publication Date: 2019-02-01
    Description: Global warming and ocean acidification are among the most important stressors for aquatic ecosystems in the future. To investigate their direct and indirect effects on a near-natural plankton community, a multiple-stressor approach is needed. Hence, we set up mesocosms in a full-factorial design to study the effects of both warming and high CO2 on a Baltic Sea autumn plankton community, concentrating on the impacts on microzooplankton (MZP). MZP abundance, biomass, and species composition were analysed over the course of the experiment. We observed that warming led to a reduced time-lag between the phytoplankton bloom and an MZP biomass maximum. MZP showed a significantly higher growth rate and an earlier biomass peak in the warm treatments while the biomass maximum was not affected. Increased pCO2 did not result in any significant effects on MZP biomass, growth rate, or species composition irrespective of the temperature, nor did we observe any significant interactions between CO2 and temperature. We attribute this to the high tolerance of this estuarine plankton community to fluctuations in pCO2, often resulting in CO2 concentrations higher than the predicted end-of-century concentration for open oceans. In contrast, warming can be expected to directly affect MZP and strengthen its coupling with phytoplankton by enhancing its grazing pressure.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1093/icesjms/fsv198
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 8
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    Dominance of the planktonic diatom Thalassiosira minima in recent summers in the Bahia Blanca Estuary, Argentina (2012)
    Oxford Univ. Press
    In:  Journal of Plankton Research, 34 (11). pp. 995-1000.
    Details
    Publication Date: 2018-06-06
    Description: The diatom Thalassiosira minima was first recorded in the Baha Blanca Estuary in 1992. In 19921993 it exhibited a broad seasonal occurrence. A recent survey (20062007) showed a seasonal appearance restricted mainly to summer together with a greater relative abundance within the phytoplankton. A close connection was found with warmer, more saline and highly turbid conditions experienced in recent summers in the estuary. Whether these changes will impact the estuary trophic dynamics remains an open question.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1093/plankt/fbs060
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  • 9
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    Silicate and the functional geometry of marine phytoplankton (1998)
    Oxford Univ. Press
    In:  Journal of Plankton Research, 20 (9). pp. 1853-1859.
    Details
    Publication Date: 2018-05-30
    Description: The impact of nutrient supply ratios on the functional geometry of phytoplankton has been studied by means of competition experiments with phytoplankton communities from the Arabian Sea. Cell length and deviation from spherical shape of dominant competitors increased with Si:N ratios.Surface:volume ratios were minimal at intermediate Si:N ratios. Grazing by the rotifer Brachionus plicatilis did not lead to a qualitative shift in the response of geometric properties to Si:N ratios; however, mean cell lengths increased while surface:volume ratios decreased.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1093/plankt/20.9.1853
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  • 10
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    A Comparison of the Droop and the Monod Models of Nutrient Limited Growth Applied to Natural Populations of Phytoplankton (1991)
    British Ecological Society
    In:  Functional Ecology, 5 (4). p. 535.
    Details
    Publication Date: 2017-01-16
    Description: The extent of nutrient limitation of phytoplankton in eutrophic Pluβsee was studied by enrichment bioassays and by analysing the cellular stoichiometry of monospecific fractions obtained by size fractionation and density-gradient separation. In this lake silicate and nitrogen, but not phosphorus, at times limit the reproductive rates of phytoplankton. The dependence of nutrient-limited reproductive rates on the cellular content of the limiting nutrient (cell quota) could well be described by the Droop model. Biomass specific minimal cell quotas of nitrogen ranged from 0.014 to 0.061 mol N mol-1 C, minimal cell quotas of silicon ranged from 0.055 to 0.127 mol Si mol-1 C. The cell quotas of the non-limiting nutrients usually increased with the cell quotas of the limiting nutrient. In contrast to the Droop model, the Monod model which relies on ambient concentrations of limiting nutrients was a much poorer predictor of growth rates.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.2307/2389636
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