Evaluating ecosystem-based management options: Effects of trawling in Torres Strait, Australia

摘要: A suite of management options for a prawn trawl fishery in Torres Strait, Australia was assessed impacts on the benthic fauna using dynamic strategy evaluation approach. The specification gained through consultation with stakeholders. Data model drawn from several sources: fleet data logbooks and satellite vessel monitoring systems, depletion rates trawl-down experiments, recovery post-experiment studies, distribution large-scale surveys. Although there were large uncertainties resulting indicators, robust measures relevant to obtained by taking ratios relative status quo. control biggest effect total effort; reducing effort always led increases faunal density up 10%. Spatial closures had smaller benefit 2%. closing set buffer zones around reefs trawling indistinguishable quo option. Closing larger area, however, largely beneficial especially sea cucumbers. When spatial distributions prior fishing accounted for, positively correlated improved those negatively correlated. reduction catch under scenarios could be ameliorated introducing temporal over full-moon period.