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  • Seagrass patch size affects fish responses to edges

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    65673_1.pdf (167.1Kb)
    Author(s)
    Smith, Timothy M
    Hindell, Jeremy S
    Jenkins, Greg P
    Connolly, Rod M
    Griffith University Author(s)
    Connolly, Rod M.
    Year published
    2010
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    Abstract
    1. Patch area and proximity of patch edge can influence ecological processes across patchy landscapes and may interact with each other. Different patch sizes have different amounts of core habitat, potentially affecting animal abundances at the edge and middle of patches. In this study, we tested if edge effects varied with patch size. 2. Fish were sampled in 10 various-sized seagrass patches (114-5934 m2) using a small (0絠m2) push net in three positions within each patch: the seagrass edge, 2 m into a patch and in the middle of a patch. 3. The two most common species showed an interaction between patch size and the ...
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    1. Patch area and proximity of patch edge can influence ecological processes across patchy landscapes and may interact with each other. Different patch sizes have different amounts of core habitat, potentially affecting animal abundances at the edge and middle of patches. In this study, we tested if edge effects varied with patch size. 2. Fish were sampled in 10 various-sized seagrass patches (114-5934 m2) using a small (0絠m2) push net in three positions within each patch: the seagrass edge, 2 m into a patch and in the middle of a patch. 3. The two most common species showed an interaction between patch size and the edge-interior difference in abundance. In the smallest patches, pipefish (Stigmatopora nigra) were at similar densities at the edge and interior, but with increasing patch size, the density at the edge habitat increased. For gobies (Nesogobius maccullochi), the pattern was exactly the opposite. 4. This is the first example from a marine system of how patch size can influence the magnitude and pattern of edge effects. 5. Both patch area and edge effects need to be considered in the development of conservation and management strategies for seagrass habitats.
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    Journal Title
    Journal of Animal Ecology
    Volume
    79
    Issue
    1
    DOI
    https://doi.org/10.1111/j.1365-2656.2009.01605.x
    Copyright Statement
    Author Posting. Copyright The Authors 2010. The full text of this article is published in Journal of Animal Ecology, Volume 79, Issue 1, pages 275–281, January 2010. It is available online at http://dx.doi.org/10.1111/j.1365-2656.2009.01605.x
    Subject
    Environmental sciences
    Biological sciences
    Ecology not elsewhere classified
    Agricultural, veterinary and food sciences
    Publication URI
    http://hdl.handle.net/10072/36962
    Collection
    • Journal articles

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