气候变化领域集成服务门户(CCPortal): Global evaluation of shark sanctuaries

CCPortal

DOI	10.1016/j.gloenvcha.2017.09.005
	Global evaluation of shark sanctuaries
	Ward-Paige C.A.; Worm B.
发表日期	2017
ISSN	0959-3780
卷号	47
英文摘要	Due to well-documented declines in many shark populations there is increasing pressure to implement new management and rebuilding strategies at the national and international scale. Since 2009, fifteen coastal countries in the Atlantic, Indian and Pacific Oceans have opted to ban commercial shark fishing altogether, and have laws that prohibit the possession, trade or sale of sharks and shark products. These 'shark sanctuaries’ collectively cover >3% of the world's oceans, a similar coverage as all currently established marine protected areas combined. Despite their prominence, and an intense scientific debate about their usefulness, the condition of shark sanctuaries has not yet been empirically evaluated. Here, we report results from a global diver survey used to set baselines of shark populations, human use patterns, public awareness and threats in all 15 shark sanctuaries, and contrasted with observations from 23 non-sanctuary countries. Specific results varied by country, but there were some general trends: i) shark sanctuaries showed less pronounced shark population declines, fewer observations of sharks being sold on markets, and lower overall fishing threats compared to non-shark sanctuaries, ii) bycatch, ghost gear, marine debris and habitat destruction are significant threats that are often not addressed by sanctuary regulations and need to be resolved in other ways, and iii) participants in sanctuaries were more optimistic about the survival of shark populations in local waters, but also highlighted the need for further conservation efforts. These results suggest that shark sanctuaries, as seen through the lens of local experts, may be a helpful conservation tool but likely not sufficient in isolation. There is an urgent need for higher-resolution data on shark abundance, incidental catch, and markets to direct priority conservation needs and optimize the conservation benefits of existing and future shark sanctuaries. © 2017 The Authors
英文关键词	Bycatch; Citizen science; Fisheries; Ghost gear; Marine debris; Protected areas; Shark conservation
学科领域	abundance; bycatch; conservation status; fishery; fishing gear; global perspective; management practice; market conditions; population decline; protected area; shark; strategic approach; survival; Atlantic Ocean; Indian Ocean; Pacific Ocean; Chondrichthyes
语种	英语
scopus关键词	abundance; bycatch; conservation status; fishery; fishing gear; global perspective; management practice; market conditions; population decline; protected area; shark; strategic approach; survival; Atlantic Ocean; Indian Ocean; Pacific Ocean; Chondrichthyes
来源期刊	Global Environmental Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/117205
作者单位	Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax, NS B3H 4R2, Canada; eOceans, Dartmouth, NS B2Y 1T7, Canada
推荐引用方式 GB/T 7714	Ward-Paige C.A.,Worm B.. Global evaluation of shark sanctuaries[J],2017,47.
APA	Ward-Paige C.A.,&Worm B..(2017).Global evaluation of shark sanctuaries.Global Environmental Change,47.
MLA	Ward-Paige C.A.,et al."Global evaluation of shark sanctuaries".Global Environmental Change 47(2017).