Is spatial uniformity of soft-sediment biodiversity widespread and, if so, over what scales?

Barnes, R. S. K. (2014) Is spatial uniformity of soft-sediment biodiversity widespread and, if so, over what scales?. Marine Ecology Progress Series, 504 147-158. doi:10.3354/meps10770

Author Barnes, R. S. K.
Title Is spatial uniformity of soft-sediment biodiversity widespread and, if so, over what scales?
Journal name Marine Ecology Progress Series   Check publisher's open access policy
ISSN 0171-8630
Publication date 2014-05-14
Year available 2014
Sub-type Article (original research)
DOI 10.3354/meps10770
Open Access Status DOI
Volume 504
Start page 147
End page 158
Total pages 12
Place of publication Oldendorf, Germany
Publisher Inter-Research
Language eng
Formatted abstract
Spatial variation in the components of faunal assemblages, but spatial uniformity of their biodiversity metrics, as described in 2013 for a seagrass bed in an estuarine bay in the warm-temperate Indian Ocean, is probably widespread in marine environments, and not restricted to seagrass habitats. Here, it is shown to occur across unvegetated siliceous sandflats as well as seagrass beds on a high-diversity but low-abundance subtropical island (North Stradbroke Island, Australia) in the South Pacific, and on a low-diversity but high-abundance cool-temperate island (Scolt Head Island, UK) in the North Atlantic. At the Australian locality, this uniform biodiversity but non-uniform faunal assemblage composistion were observed to extend over distances of at least 6.5 km in both habitat types. Unit areas as small as 0.0275 m2 in each system supported a statistically invariant percentage of the total species pool of that system (i.e. the system’s overall mean percentage constancy index at the spatial scale concerned). Further, assemblages in all localities showed very similar ranked species-constancy curves, even though the proportions of the total numbers comprised by the various species varied widely. It is therefore suggested that the factors structuring the macrofaunal assemblages in such soft-sediment habitats must be capable of promoting comparable systems of relative frequency of occurrence, regardless of local levels of faunal abundance and biodiversity.
Keyword Biodiversity
Spatial constancy
Spatial occurrence
Spatial uniformity
Species abundance distributions
Habitat structure
Seagrass meadows
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Biological Sciences Publications
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