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Poor ecological representation by an expensive reserve system: Evaluating 35 years of marine protected area expansion
Conservation Letters ( IF 8.5 ) Pub Date : 2018-06-25 , DOI: 10.1111/conl.12584
Kerstin Jantke 1 , Kendall R. Jones 2, 3 , James R. Allan 2, 3, 4 , Alienor L.M. Chauvenet 3, 5 , James E.M. Watson 2, 3, 4 , Hugh P. Possingham 3, 5, 6
Affiliation  

Global areal protection targets have driven a dramatic expansion of the marine protected area (MPA) estate. We analyzed how cost‐effective global MPA expansion has been since the inception of the first global target (set in 1982) in achieving ecoregional representation. By comparing spatial patterns of MPA expansion against optimal MPA estates using the same expansion rates, we show the current MPA estate is both expensive and ineffective. Although the number of ecoregions represented tripled and 12.7% of national waters was protected, 61% of ecoregions and 81% of countries are not 10% protected. Only 10.3% of the national waters of the world would be sufficient to protect 10% of each ecoregion if MPA growth since 1982 strategically targeted underrepresented ecoregions. Unfortunately 16.3% of national waters are required for the same representative target if systematic protection started in 2016 (an extra 3.6% on top of 12.7%). To avoid the high costs of adjusting increasingly biased MPA systems, future efforts should embrace target‐driven systematic conservation planning.

中文翻译:

昂贵的储备系统使生态系统表现不佳:评估海洋保护区扩建35年

全球区域保护目标已经推动了海洋保护区(MPA)领域的急剧扩张。我们分析了自从实现生态区域代表性的第一个全球目标(设定于1982年)以来,全球MPA扩展的成本效益如何。通过比较使用相同扩展率的MPA扩展空间与最佳MPA扩展空间的格局,我们显示出当前的MPA扩展既昂贵又无效。尽管代表区域的生态区域数量增加了两倍,有12.7%的国家水域受到了保护,但61%的生态区域和81%的国家没有受到10%的保护。如果自1982年以来MPA增长战略性地针对代表性不足的生态区,那么世界上仅10.3%的国家水域就足以保护每个生态区的10%。不幸的是16。如果在2016年开始系统保护,则要达到同一代表性目标,就需要3%的国家水域(在12.7%的基础上再增加3.6%)。为了避免调整有偏见的MPA系统的高昂成本,未来的工作应包括以目标为导向的系统性保护规划。
更新日期:2018-06-25
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