Potential role of predators on carbon dynamics of marine ecosystems as assessed by a Bayesian belief network

摘要: While the effects of climate change on top predators are well documented, role predation ecosystem level carbon production is poorly developed, despite it being a logical consequence trophic dynamics. Trophic cascade have shown predator mediated changes in primary production, but we predict that should lower overall biomass capacity any system with down control. Through simple Bayesian belief network model typical marine foodweb, show removal, as common through activities such fishing and shark finning, results higher biomasses fish zooplankton, resulting net by system. In situations throughout much ocean, where finning over reduce highest tropic levels, probability increasing was ~ 60%, unlike previous studies food chains, were not present. preliminary, sources uncertainty data models acknowledged, provide even more strength to argument protect open sea stocks, particularly large sharks, cetaceans game fish.