TitleConsequences of Ecological, Evolutionary and Biogeochemical Uncertainty for Coral Reef Responses to Climatic Stress
Publication TypeJournal Article
Year of Publication2014
AuthorsMumby PJ, van Woesik R
Date PublishedMay 19
Type of ArticleArticle
ISBN Number0960-9822
Accession NumberBIOSIS:PREV201400477358
Keywords07002, Behavioral biology - General and comparative behavior, 07003,, 07504, Ecology: environmental, 07506, Ecology:, 07508, Ecology: environmental biology -, 07512, Ecology: environmental biology - Oceanography, 64008,, Algae, Algae, Microorganisms, Nonvascular Plants, Plants, Animal, Animals,, Animals, Invertebrates, Behavior, Behavioral biology - Animal behavior, biology - Bioclimatology and biometeorology, Chordates, Fish, Nonhuman Vertebrates, Vertebrates, climate change, ocean acidification, species adaptation, competitive, Climatology (Environmental Sciences), Cnidaria [41000], coral reef response, trans-generational plasticity, biogeochemical, coupling, environmental biology - Plant, Environmental Sciences), greenhouse gas, interaction, ocean warming, ecological inheritance, system behavior,, interaction, physiological effect, climatic stress, ecological, Invertebrata: comparative, experimental morphology, physiology and, Marine Ecology (Ecology,, pathology - Cnidaria, Pisces [85200], Plantae, [13000], [fish], [macroalgae]/Invertebrata, Animalia, [zoanthid]/Vertebrata, Chordata, Animalia
AbstractCoral reefs are highly sensitive to the stress associated with greenhouse gas emissions, in particular ocean warming and acidification. While experiments show negative responses of most reef organisms to ocean warming, some autotrophs benefit from ocean acidification. Yet, we are uncertain of the response of coral reefs as systems. We begin by reviewing sources of uncertainty and complexity including the translation of physiological effects into demographic processes, indirect ecological interactions among species, the ability of coral reefs to modify their own chemistry, adaptation and trans-generational plasticity. We then incorporate these uncertainties into two simple qualitative models of a coral reef system under climate change. Some sources of uncertainty are far more problematic than others. Climate change is predicted to have an unambiguous negative effect on corals that is robust to several sources of uncertainty but sensitive to the degree of biogeochemical coupling between benthos and seawater. Macroalgal, zoanthid, and herbivorous fish populations are generally predicted to increase, but the ambiguity (confidence) of such predictions are sensitive to the source of uncertainty. For example, reversing the effect of climate-related stress on macroalgae from being positive to negative had no influence on system behaviour. By contrast, the system was highly sensitive to a change in the stress upon herbivorous fishes. Minor changes in competitive interactions had profound impacts on system behaviour, implying that the outcomes of mesocosm studies could be highly sensitive to the choice of taxa. We use our analysis to identify new hypotheses and suggest that the effects of climatic stress on coral reefs provide an exceptional opportunity to test emerging theories of ecological inheritance.