气候变化领域集成服务门户(CCPortal): Cascading social-ecological costs and benefits triggered by a recovering keystone predator

CCPortal

DOI	10.1126/science.aay5342
	Cascading social-ecological costs and benefits triggered by a recovering keystone predator
	Gregr E.J.; Christensen V.; Nichol L.; Martone R.G.; Markel R.W.; Watson J.C.; Harley C.D.G.; Pakhomov E.A.; Shurin J.B.; Chan K.M.A.
发表日期	2020
ISSN	0036-8075
起始页码	1243
结束页码	1247
卷号	368 期号:6496
英文摘要	Predator recovery often leads to ecosystem change that can trigger conflicts with more recently established human activities. In the eastern North Pacific, recovering sea otters are transforming coastal systems by reducing populations of benthic invertebrates and releasing kelp forests from grazing pressure. These changes threaten established shellfish fisheries and modify a variety of other ecosystem services. The diverse social and economic consequences of this trophic cascade are unknown, particularly across large regions. We developed and applied a trophic model to predict these impacts on four ecosystem services. Results suggest that sea otter presence yields 37% more total ecosystem biomass annually, increasing the value of finfish [+9.4 million Canadian dollars (CA$)], carbon sequestration (+2.2 million CA$), and ecotourism (+42.0 million CA$). To the extent that these benefits are realized, they will exceed the annual loss to invertebrate fisheries (−$7.3 million CA$). Recovery of keystone predators thus not only restores ecosystems but can also affect a range of social, economic, and ecological benefits for associated communities. © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works
关键词	biomass carbon sequestration coastal zone ecosystem function ecosystem service finfish grazing pressure human activity kelp forest keystone species shellfish fishery trophic cascade Pacific Ocean Pacific Ocean (North)Enhydra Invertebrata animal biomass carbon sequestration ecosystem restoration fishery food chain growth, development and aging herbivory human activities kelp otter predation shellfish Animals Biomass Carbon Sequestration Environmental Restoration and Remediation Fisheries Food Chain Herbivory Human Activities Kelp Otters Predatory Behavior Shellfish
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133436
推荐引用方式 GB/T 7714	Gregr E.J.,Christensen V.,Nichol L.,et al. Cascading social-ecological costs and benefits triggered by a recovering keystone predator[J]. Science,2020,368(6496).
APA	Gregr E.J..,Christensen V..,Nichol L..,Martone R.G..,Markel R.W..,...&Chan K.M.A..(2020).Cascading social-ecological costs and benefits triggered by a recovering keystone predator.,368(6496).
MLA	Gregr E.J.,et al."Cascading social-ecological costs and benefits triggered by a recovering keystone predator".368.6496(2020).