impact of Marine Protected Areas (MPAs) on fishing

​A paper by Patricia Silva explores the impact of Marine Protected Areas (MPAs) on fishing villages in Tanzania. She finds that MPAs that promote alternative income generating activities (AIGA) influence households in Tanzania to use less destructive fishing methods.  Several huge MPAs have been established in recent years and this is an example of research that is needed to determine how effective these MPAs are.  The paper is a World Bank Group. World Bank Policy Research Working Paper 3831, February 2006. It is available at http://elibrary.worldbank.org/doi/abs/10.1596/1813-9450-3831