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  1. Predation Of Herbivores On Reefs And Its Effect On The Coral Habitat

    Ratteray, Andres
    June 13, 2015

    Investigations into herbivore behavior are essential for effective assessment of reef dynamics and subsequent fisheries management. Herbivorous grazing does not directly dictate the composition of a reef but it gives insight into the reef’s history. Bite-rates varying primarily because of foraging efficiency. Thus, high algal and high coral environments both yield low bite-rates. In high algal environments, receive more nutrition per bite than at other sites and so bite less. In high coral environments, algae is less plentiful and thus fish dedicate less time to feeding, leading less energy-demanding lifestyles. Bite-rate does not depend on fish size and thus differences in bite-rate are not due to preferential recruitment of fish to certain size classes at each reef. Lastly, the, ‘inverse trophic pyramid,’ used to describe isolated environments with a high proportion of predator biomass is not a result of increased predator abundance but a decrease in the abundance of obligate herbivores.

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