Reef Fishes , Seaweeds , and Corals : A Complex Triangle
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منابع مشابه
Management implications of juvenile reef fish habitat preferences and coral susceptibility to stressors
In theHawaiianArchipelago, shelter-dependent juvenile stages ofmany reef fishes and their coral habitats are increasingly put at risk by multiple anthropogenic stressors (e.g. overfishing and habitat loss, coral bleaching and sedimentation, respectively).We assessed coral bleaching (to identify relative susceptibility among growth forms) and the use v. availability of structurally complex and s...
متن کاملChemically rich seaweeds poison corals when not controlled by herbivores.
Coral reefs are in dramatic global decline, with seaweeds commonly replacing corals. It is unclear, however, whether seaweeds harm corals directly or colonize opportunistically following their decline and then suppress coral recruitment. In the Caribbean and tropical Pacific, we show that, when protected from herbivores, approximately 40 to 70% of common seaweeds cause bleaching and death of co...
متن کاملCryptic effects of habitat declines: coral-associated fishes avoid coral-seaweed interactions due to visual and chemical cues
Seaweed-dominated coral reefs are becoming increasingly common as environmental conditions shift away from those required by corals and toward those ideal for rampant seaweed growth. How coral-associated organisms respond to seaweed will not only impact their fate following environmental change but potentially also the trajectories of the coral communities on which they rely. However, behaviora...
متن کاملHigh CO2 enhances the competitive strength of seaweeds over corals
Space competition between corals and seaweeds is an important ecological process underlying coral-reef dynamics. Processes promoting seaweed growth and survival, such as herbivore overfishing and eutrophication, can lead to local reef degradation. Here, we present the case that increasing concentrations of atmospheric CO(2) may be an additional process driving a shift from corals to seaweeds on...
متن کاملMutualism and Coral Persistence: the Role of Herbivore Resistance to Algal Chemical Defense
Because seaweeds uncontrolled by herbivores can overgrow and kill corals, competition can exclude corals from temperate latitudes where herbivores generally fail to control seaweed biomass. In this study, we show that the coral Oculina arbuscula persists on reefs in temperate North Carolina where seaweeds are common by harboring the omnivorous crab Mithrax forceps, which removes seaweeds and in...
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تاریخ انتشار 2007