Paul J. Somerfield

TL;DR: Examination of the properties of this ‘zero-adjusted’ Bray–Curtis measure suggests a mechanism for practical classification of the plethora of resemblance measures defined in the literature, and answers questions about whether the different information extracted by some coefficients is more, or less, helpful to the final biological interpretation.

TL;DR: Tests for null hypotheses of 'absence of structure' should play an important role in any exploratory study, to guard against interpretation of sample patterns that could have been obtained by chance, and two new tests of this type are described.

TL;DR: The results suggested that seasonal changes in environmental variables are more important than trophic interactions, and correlations in abundance were stronger within bacterial taxa rather than between bacteria and eukaryotes, or betweenacteria and environmental variables.

TL;DR: Methods of evaluating change in biodiversity at the community level using long-term datasets are reviewed, and whole-community approaches with those that combine information from different species and habitats are contrasted.

TL;DR: In this article, a meta-analysis of 101 different bottom-fishing gear impacts on the seabed and its biota was carried out and the direct effects of different types of fishing gear were strongly habitat-specific, with the most severe impact occurring in biogenic habitats in response to scallop-dredging.