Benthic assemblages associated with native and non-native oysters are similar

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      Invasive species can impact native species and alter assemblage structure, which affects associated ecosystem functioning. The pervasive Pacific oyster, Crassostrea gigas, has been shown to affect the diversity and composition of many host ecosystems. We tested for effects of the presence of the invasive C. gigas on native assemblages by comparing them directly to assemblages associated with the declining native European oyster, Ostrea edulis. The presence of both oyster species was manipulated in intertidal and subtidal habitats and reefs were constructed at horizontal and vertical orientation to the substratum. After 12 months, species diversity and benthic assemblage structure between assemblages with C. gigas and O. edulis were similar, but differed between habitats and orientation, suggesting that both oyster species were functionally similar in terms of biodiversity facilitation. These findings support evidence, that non-native species could play an important role in maintaining biodiversity in systems with declining populations of native species.


      • Benthic assemblages associated with native and non-native oysters are similar

        Rights statement: © 2016 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited.

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      Original languageEnglish
      JournalMarine Pollution Bulletin
      Journal publication date02 Jul 2016
      Early online date02 Jul 2016
      StateEarly online date - 02 Jul 2016

      ID: 57493884