Recovery of D~adema antrllarum following the Canbbean-wide mass mortality of the urchin in 1983 is documented and recruitment strength to each island was posibvely correlated with adult denslty on that Island, which may suggest that Island populations are dlscrete breeding units.
Coralline algae, which facilitate metamorphosis and settlement of coral larvae, were less abundant on settlement plates on eutrophic reefs, and unoccupied space was lower, supporting the suggestion that suitable coral settlement substrate may be limiting on eUTrophic reefs.
To provide managers with an estimate of the impacts that mesh-size regulation could have on fishers, the recovery time of catches and the financial recovery times for fishers should be modelled for a hypothetical assemblage of 10–15 reef fishes using available information.
Both post-spawning mortality, resulting in an interval of low abundance between cohorts (non-overlapping generations), and migration of fish away from Barbados at the end of the fishing season, remain possible explanations for the observed seasonal variation in abundance of this species.
Investigation of effects of eutrophication and sedimentation on juvenile abundance, juvenile mortality and community structure of scleractinian corals on fringing reefs on the west coast of Barbados, West Indies, in 1989 suggests that juvenile mortality rates of different species are similar on eutrophic reefs, and that differences in adult community structure between eUTrophic and less eutrophe reefs may be largely explained by interspecific differences in juvenile mortality becoming smaller.
Populations on reefs exposed to incoming oceanic water suffered heavier mortality than those on protected reefs and mean size of urchins was smallest on high density reefs, which may indicate a negative effect of density on urchin growth.