Can marine reserves assist in improving the management of fisheries? This concept has received significant attention lately in the pages of scientific journals and on the agendas of fishery managers. Sometimes called "no-take zones," these protected areas have displayed some evidence of contributing to increased fish abundance outside their boundaries, namely through the outflow of larvae from the reserve. Fishery managers have generally welcomed what they see as a promising tool to help rescue declining fish stocks.
But what do we know about the science of marine reserves? How applicable are the scientific findings from one species and area to the next? The still-nascent science has focused primarily on reef species in tropical waters, while reserves with long-lived temperate species are less-understood. Some MPA experts suggest that it is too early to say that the value of marine reserves in fishery management has been proven.