Changes in habitat complexity negatively affect diverse gastropod assemblages in coralline algal turf

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dc.contributor.author Kelaher, BP
dc.date.accessioned 2010-05-28T09:44:28Z
dc.date.issued 2003-01
dc.identifier.citation Oecologia, 2003, 135 (3), pp. 431 - 441
dc.identifier.issn 0029-8549
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/8620
dc.description.abstract The physical structure of a habitat generally has a strong influence on the diversity and abundance of associated organisms. I investigated the role of coralline algal turf structure in determining spatial variation of gastropod assemblages at different tidal heights of a rocky shore near Sydney, Australia. The structural characteristics of algal turf tested were frond density (or structural complexity) and frond length (the vertical scale over which structural complexity was measured). This definition of structural complexity assumes that complexity of the habitat increases with increasing frond density. While frond length was unrelated to gastropod community structure, I found significant correlations between density of fronds and multivariate and univariate measures of gastropod assemblages, indicating the importance of structural complexity. In contrast to previous studies, here there were negative relationships between the density of fronds and the richness and abundance of gastropods. Artificial habitat mimics were used to manipulate the density of fronds to test the hypothesis that increasing algal structural complexity decreases the richness and abundance of gastropods. As predicted, there were significantly more species of gastropods in loosely packed than in tightly packed turf at both low- and mid-shore levels. Despite large differences between gastropod assemblages at different tidal heights, the direction and magnitude of these negative effects were similar at low- and mid-shore levels and, therefore, relatively independent of local environmental conditions.
dc.publisher Springer-Verlag
dc.relation.isbasedon 10.1007/s00442-003-1196-5
dc.title Changes in habitat complexity negatively affect diverse gastropod assemblages in coralline algal turf
dc.type Journal Article
dc.parent Oecologia
dc.journal.volume 3
dc.journal.volume 135
dc.journal.number 3 en_US
dc.publocation New York, USA en_US
dc.identifier.startpage 431 en_US
dc.identifier.endpage 441 en_US
dc.cauo.name DVCRch.Institute for Water & Environmental Resource Mgmnt en_US
dc.conference Verified OK en_US
dc.for 060205 Marine and Estuarine Ecology (Incl. Marine Ichthyology)
dc.personcode 040098
dc.percentage 100 en_US
dc.classification.name Marine and Estuarine Ecology (incl. Marine Ichthyology) en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Habitat structure, Structural complexity, Species richness, Rocky shore en_US
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Faculty of Science/School of the Environment
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
utslib.collection.history Closed (ID: 3)


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