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Spatial homogeneity of seagrass faunal biodiversity

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The benthic animal species inhabiting seagrass meadows at sites in warm-temperate South Africa, subtropical Queensland and the cool-temperate North Sea all show heterogeneous (= patchy) distributions and accordingly the assemblages that they form vary widely in composition across each site. Nevertheless, at each site the number of species per unit area (‘species density’) is statistically homogeneous (= uniform) over large areas (up to 6+ km), as is species richness and ENS diversity: something seemingly unreported from other systems. Further the number of species per sample is effectively the same at all three disparate sites. Is this extreme deterministic control of assemblage structure? The reasons for these peculiar ecological conditions are described in this talk.

This talk is part of the Zoology Department - Tea Talks series.

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