With each year's designation of new marine protected areas around the world, analysis of the coverage fostered by this patchwork of MPAs is becoming increasingly difficult.
For managers to assess gaps in habitat protection, they must first document where MPAs already exist. In regions where dozens -- or hundreds -- of marine protected areas have been designated under various regulatory regimes, such documentation can be painstaking. Nonetheless, inventories of MPAs are necessary for effective marine resource planning, and efforts to create regional MPA databases are becoming more common.
The new book Marine Protected Areas and Fishery Closures in British Columbia may offer a useful model for MPA practitioners interested in pursuing their own MPA-inventory process. Created by two Canadian fisheries researchers, the book profiles the 125 legislated MPAs and 579 spatially-persistent fishery closures along Canada's Pacific coast. (The book defines "fishery closures" as restricting only fishing activity, while "marine protected areas" may address a variety of human activities.)