From the NSW Jervis Bay MP site. I have copies if these get removed from the site. A review of marine park literature:
http://www.mpa.nsw.gov.au/pdf/MPA-literature-listing.pdfA review of the benefits:
http://www.mpa.nsw.gov.au/pdf/A-review-of-benefits-MPAs.pdfSome extracts from the second. Much more detail is given in the document.
The primary criteria identified throughout much of the world for establishing Marine Parks are that they contain a comprehensive, adequate and representative sample of marine biological diversity. In the Australian and NSW context, “comprehensiveness” refers to the extent to which the full range of ecosystems and habitats within and across all NSW bioregions are included in the parks; “adequacy” is the capability of the areas to maintain biodiversity and ecological processes into the future; and “representativeness” is the extent to which the parks reflect the full range of biological diversity. These broad ecological criteria were examined in the bioregional assessments in NSW that resulted in the identification of specific areas with important biodiversity values.
In recent decades, concerns over the cumulative impacts of human activities resulting in declines in the ecological condition of marine ecosystems, and sizes and abundances of many species, have led to the use of marine protected areas as a management tool for conserving biodiversity in most of the world’s oceans.
Benefits cited in scientific studies that may result from the implementation of marine protected areas like marine parks and their sanctuary zones include:
• increases in the abundance, biomass, diversity and productivity of many organisms;
• reductions in the loss of threatened and vulnerable species;
• helping ecosystems recover from natural and human impacts;
• increased protection of important species and habitats;
• the provision of reference sites for the evaluation of threats to biodiversity; and
• improved engagement and education of the community concerning issues of marine conservation.
The likelihood of significant and measurable improvements in the health of marine ecosystems through the implementation of a marine protected area, however, is strongly related to the following criteria:
• adequate knowledge about the contained biodiversity;
• assessment of the vulnerability of the biodiversity and threatening processes;
• consideration of the location and extent of zone types in relation to the distribution of habitats, ecological processes and management practicality; and
• the capacity to reduce the level of impacting activities.
Given that many activities have direct and indirect impacts on species and habitats, managing or eliminating those activities is an effective way of reducing those impacts on the marine ecosystem, and contributing to the long-term ecological viability of marine ecosystems. Zoning arrangements within multiple-use marine parks such as those set up in NSW attempt to reduce the impacts on marine ecosystems by protecting a proportion of all habitats and their associated species from removal, destructive activities and a range of threatening processes. In terms of indirect impacts such as pollution and siltation, a range of catchment management programs are progressively being implemented to address these issues. The protection of species and their habitat can result in benefits to a range of species and habitats, some of which are documented below.