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dc.contributor.authorBarnes, RSK
dc.date.accessioned2022-06-20T16:18:11Z
dc.date.available2022-06-20T16:18:11Z
dc.date.issued2022
dc.identifier.issn0272-7714
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/338242
dc.description.abstractDifferentials between the invertebrate biodiversity of seagrass (S) and of adjacent bare sediment (B) were investigated at 8 localities spaced along the axial gradient of an estuarine system, that at Knysna in South Africa; various assemblage metrics being compared at paired S/B stations. Little or no S:B differentials were found near the mouth, but significant increase in those between both levels of overall assemblage abundance and of taxon richness did occur upstream (in abundance from <1 near the mouth to >2 towards the head, and in taxon richness from 1 to 2). The habitat supporting greater abundance therefore switched along the gradient. The differential between numbers of co-dominant species in the assemblages also increased upstream, whereas that between levels of taxonomic distinctness decreased. Functional diversity, evenness and patchiness differentials, however, showed no significant upstream change; neither did values of Bray-Curtis similarity between the two habitat types. Most affected were the epibenthic- and subsurface-feeding assemblage components. As predicted, macrobenthic assemblages of seagrass and bare sediment reacted differently to the gradient, and seagrass enhanced macrobenthic biodiversity much more upstream. However, location along the estuarine gradient appeared an equally important influence on assemblage composition to presence or absence of seagrass. The evident context-dependent nature of such differentials urges considerable caution in the extrapolation of ecological indicators derived from local areas to wider regions.
dc.publisherElsevier BV
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleBiodiversity differentials between seagrass and adjacent bare sediment change along an estuarine gradient
dc.typeArticle
dc.publisher.departmentDepartment of Zoology
dc.date.updated2022-06-19T16:48:12Z
prism.publicationDate2022
prism.publicationNameEstuarine, Coastal and Shelf Science
dc.identifier.doi10.17863/CAM.85654
dcterms.dateAccepted2022-06-14
rioxxterms.versionofrecord10.1016/j.ecss.2022.107951
rioxxterms.versionVoR
dc.contributor.orcidBarnes, RSK [0000-0002-5773-5994]
dc.identifier.eissn1096-0015
rioxxterms.typeJournal Article/Review
cam.issuedOnline2022-06-16
datacite.issupplementedby.doihttps://doi.org/10.17632/nmwsrpd738.1
cam.depositDate2022-06-19
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International