The effect of patch isolation on epifaunal colonization in two different seagrass ecosystems

Camilla Gustafsson, Tiina Salo

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

    Resumé

    The macrofaunal colonization of isolated habitats is affected by many factors, ranging from distance to the nearest source population to the dispersal mechanism of the species. We investigated the initial epifaunal colonization at two sites, one situated in the Northern Gulf of Mexico and the other in the Northern Baltic Sea. At each site, artificial seagrass units were placed at 10- and 20-m distances from a continuous seagrass meadow, as well as inside the meadow over a 5-day colonization time. With the exception of amphipods in Gulf of Mexico, patch isolation had a negative effect on colonization for the other faunal species, irrespective of the sites. This inverse colonization pattern of amphipods suggests that they are not equally sensitive to patch isolation in different regions. Our results indicate that increasing habitat isolation can have serious consequences for the community composition of seagrass epifauna. Furthermore, we emphasize the need for larger-scale latitudinal comparative studies.
    OriginalsprogEngelsk
    TidsskriftMarine Biology
    Vol/bind159
    Udgave nummer7
    Sider (fra-til)1497-1507
    Antal sider11
    ISSN0025-3162
    DOI
    StatusUdgivet - 12 apr. 2012

    Citer dette

    Gustafsson, Camilla ; Salo, Tiina. / The effect of patch isolation on epifaunal colonization in two different seagrass ecosystems. I: Marine Biology. 2012 ; Bind 159, Nr. 7. s. 1497-1507.
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    The effect of patch isolation on epifaunal colonization in two different seagrass ecosystems. / Gustafsson, Camilla; Salo, Tiina.

    I: Marine Biology, Bind 159, Nr. 7, 12.04.2012, s. 1497-1507.

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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    T1 - The effect of patch isolation on epifaunal colonization in two different seagrass ecosystems

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    AU - Salo, Tiina

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    AB - The macrofaunal colonization of isolated habitats is affected by many factors, ranging from distance to the nearest source population to the dispersal mechanism of the species. We investigated the initial epifaunal colonization at two sites, one situated in the Northern Gulf of Mexico and the other in the Northern Baltic Sea. At each site, artificial seagrass units were placed at 10- and 0-m distances from a continuous seagrass meadow, as well as inside the meadow over a 5-day colonization time. With the exception of amphipods in Gulf of Mexico, patch isolation had a negative effect on colonization for the other faunal species, irrespective of the sites. This inverse colonization pattern of amphipods suggests that they are not equally sensitive to patch isolation in different regions. Our results indicate that increasing habitat isolation can have serious consequences for the community composition of seagrass epifauna. Furthermore, we emphasize the need for larger-scale latitudinal comparative studies.

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