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  • SPRINGER  (2)
  • ELSEVIER SCIENCE BV  (1)
  • Niedersächsischer Landesbetrieb für Wasserwirtschaft, Küsten- und Naturschutz  (1)
  • 1
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    Zoobenthische Datenanalyse zu Status und Belastungen der Benthosgemeinschaften in der Deutschen Bucht (2017)
    Niedersächsischer Landesbetrieb für Wasserwirtschaft, Küsten- und Naturschutz
    In:  EPIC3Final report, Niedersächsischer Landesbetrieb für Wasserwirtschaft, Küsten- und Naturschutz, 145 p.
    Details
    Publication Date: 2017-09-01
    Repository Name: EPIC Alfred Wegener Institut
    Type: Miscellaneous , notRev
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  • 2
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    Combined effects of predator cues and competition define habitat choice and food consumption of amphipod mesograzers (2018)
    SPRINGER
    In:  EPIC3Oecologia, SPRINGER, 186, pp. 645-654, ISSN: 0029-8549
    Details
    Publication Date: 2018-03-01
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 3
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    Castaways can't be choosers - Homogenization of rafting assemblages on floating seaweeds (2015)
    ELSEVIER SCIENCE BV
    In:  EPIC3Journal of Sea Research, ELSEVIER SCIENCE BV, 95, pp. 161-171, ISSN: 1385-1101
    Details
    Publication Date: 2015-11-21
    Description: After detachment from benthic habitats, the epibiont assemblages on floating seaweeds undergo substantial changes, but little is known regarding whether succession varies among different seaweed species. Given that floating algae may represent a limiting habitat in many regions, rafting organisms may be unselective and colonize any available seaweed patch at the sea surface. This process may homogenize rafting assemblages on different seaweed species, which our study examined by comparing the assemblages on benthic and floating individuals of the fucoid seaweeds Fucus vesiculosus and Sargassum muticum in the northern Wadden Sea (North Sea). Species richness was about twice as high on S. muticum as on F. vesiculosus, both on benthic and floating individuals. In both seaweed species benthic samplesweremore diverse than floating samples. However, the species composition differed significantly only between benthic thalli, but not between floating thalli of the two seaweed species. Separate analyses of sessile and mobile epibionts showed that the homogenization of rafting assemblages was mainly caused by mobile species. Among these, grazing isopods from the genus Idotea reached extraordinarily high densities on the floating samples from the northernWadden Sea, suggesting that the availability of seaweed rafts was indeed limiting. Enhanced break-up of algal rafts associated with intense feeding by abundant herbivores might force rafters to recolonize benthic habitats. These colonization processes may enhance successful dispersal of rafting organisms and thereby contribute to population connectivity between sink populations in theWadden Sea and source populations from up-current regions.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 4
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    Colonisation success of introduced oysters is driven by wave-related exposure (2020)
    SPRINGER
    In:  EPIC3Biological Invasions, SPRINGER, 22, pp. 2121-2127, ISSN: 1387-3547
    Details
    Publication Date: 2021-02-24
    Description: The Pacific oyster, Magallana gigas, is an extremely successful invader with established populations in marine and estuarine habitats almost all over the world. Ecological implications of the introduction of this species to indigenous communities are well documented. However, the processes by which this species successfully establishes in a recipient community is still insufficiently understood. The early detection of the oyster at the island of Helgoland (North Sea) provided the ideal opportunity to investigate whether physical mechanisms, such as wave exposure, influence their successful colonisation. We hypothesized that oyster colonisation benefits from wave-protected conditions. For this purpose, we evaluated colonisation success of M. gigas among wave-protected sites and wave-exposed sites along the island’s pier system. The densities of M. gigas were significantly higher at wave-protected sites than at wave-exposed sites, and the frequency distributions of oyster lengths indicated better growth and higher survival rates in the harbours. This higher colonisation success at wave-protected sites may be explained by the relative retention time of water masses in the harbours, probably resulting in both reduced larval drift and lower energy demands for secretion formation (i.e. firmer binding to the substrate). The fact that the density of M. gigas can vary greatly on small spatial scales depending on exposure corroborates a multiple exposure sampling approach to monitor oyster populations in order to avoid potential overestimations of population sizes in given areas.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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