Marine Protected Areas

Abstract

Marine Protected Areas (MPAs) are a key tool in ecosystem-based management, implementing a spatial approach to biodiversity conservation in the oceans. While the use of protected areas to conserve and/or protect resources has a long history, including centuries of royal hunting areas and traditionally managed areas, the modern conceptualization of protected areas dates to the late 19th century, with the designation of Yellowstone National Park in the United States in 1872. The first similar formally protected area with a marine component was the Royal National Park MPA in New South Wales, Australia, in 1879, although it also included a terrestrial component, as do many MPAs in coastal areas. The land/sea interface poses a challenge to delineating between terrestrial and marine parks, adding to a complex jurisdictional and legal landscape. Consequently, it is helpful to categorize MPAs based on the broad definition for protected areas offered by the IUCN (International Union for Conservation of Nature): a clearly defined geographical space, recognized, dedicated and managed, through legal or other effective means, to achieve the long-term conservation of nature with associated ecosystem services and cultural values. As evidenced in this definition, discussions surrounding MPAs have become more amenable to soft-law approaches and/or less formal legal designations, and they are also increasingly tied to the concept of ecosystem services (i.e., protecting systems that in turn provide people with services that would be costly to otherwise reproduce, such as the coastal protection provided by mangroves and coral reefs). Of course, there are also strong arguments for protecting nature for its own intrinsic value, as well as the value it holds for non-human species. In order to fully understand the promise and efficacy of MPAs, it is necessary to examine their legal basis, their effectiveness as tools, how they can work together as networks to achieve ecological objectives, and how the global community is using protected area targets and large-scale MPAs to maximize coverage. However, it is also important to consider the socioeconomic dimensions of MPAs, as these often lead to problems with their success, including concerns with equity and justice and how well they are governed. Looking forward, future work in the field of MPAs includes ensuring they are achieving their ecological objectives, by ensuring enough areas are closed to all extractive uses, and developing a regime for designating them in areas beyond national jurisdiction, on the high seas.