Mechanisms and risk of cumulative impacts to coastal ecosystem services: An expert elicitation approach

Handle URI:
http://hdl.handle.net/10754/625014
Title:
Mechanisms and risk of cumulative impacts to coastal ecosystem services: An expert elicitation approach
Authors:
Singh, Gerald G.; Sinner, Jim; Ellis, Joanne ( 0000-0002-2625-4274 ) ; Kandlikar, Milind; Halpern, Benjamin S.; Satterfield, Terre; Chan, Kai M.A.
Abstract:
Coastal environments are some of the most populated on Earth, with greater pressures projected in the future. Managing coastal systems requires the consideration of multiple uses, which both benefit from and threaten multiple ecosystem services. Thus understanding the cumulative impacts of human activities on coastal ecosystem services would seem fundamental to management, yet there is no widely accepted approach for assessing these. This study trials an approach for understanding the cumulative impacts of anthropogenic change, focusing on Tasman and Golden Bays, New Zealand. Using an expert elicitation procedure, we collected information on three aspects of cumulative impacts: the importance and magnitude of impacts by various activities and stressors on ecosystem services, and the causal processes of impact on ecosystem services. We assessed impacts to four ecosystem service benefits — fisheries, shellfish aquaculture, marine recreation and existence value of biodiversity—addressing three main research questions: (1) how severe are cumulative impacts on ecosystem services (correspondingly, what potential is there for restoration)?; (2) are threats evenly distributed across activities and stressors, or do a few threats dominate?; (3) do prominent activities mainly operate through direct stressors, or do they often exacerbate other impacts? We found (1) that despite high uncertainty in the threat posed by individual stressors and impacts, total cumulative impact is consistently severe for all four ecosystem services. (2) A subset of drivers and stressors pose important threats across the ecosystem services explored, including climate change, commercial fishing, sedimentation and pollution. (3) Climate change and commercial fishing contribute to prominent indirect impacts across ecosystem services by exacerbating regional impacts, namely sedimentation and pollution. The prevalence and magnitude of these indirect, networked impacts highlights the need for approaches like this to understand mechanisms of impact, in order to develop strategies to manage them.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Singh GG, Sinner J, Ellis J, Kandlikar M, Halpern BS, et al. (2017) Mechanisms and risk of cumulative impacts to coastal ecosystem services: An expert elicitation approach. Journal of Environmental Management 199: 229–241. Available: http://dx.doi.org/10.1016/j.jenvman.2017.05.032.
Publisher:
Elsevier BV
Journal:
Journal of Environmental Management
Issue Date:
23-May-2017
DOI:
10.1016/j.jenvman.2017.05.032
Type:
Article
ISSN:
0301-4797
Sponsors:
We would like to thank the Cawthron Institute for their generous support of this research, funded in part by the Ministry of Business Innovation and Employment grant MAUX1208. Special thanks to Mark Newton, Dana Clark, Sarah Klain, and Paige Olmsted for helping with the workshop. We would also like to thank the experts who took part in this study. G.G.S would like to thank the Pacific Institute for Climate Solutions and NSERC for their support.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0301479717304917
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorSingh, Gerald G.en
dc.contributor.authorSinner, Jimen
dc.contributor.authorEllis, Joanneen
dc.contributor.authorKandlikar, Milinden
dc.contributor.authorHalpern, Benjamin S.en
dc.contributor.authorSatterfield, Terreen
dc.contributor.authorChan, Kai M.A.en
dc.date.accessioned2017-06-14T12:17:34Z-
dc.date.available2017-06-14T12:17:34Z-
dc.date.issued2017-05-23en
dc.identifier.citationSingh GG, Sinner J, Ellis J, Kandlikar M, Halpern BS, et al. (2017) Mechanisms and risk of cumulative impacts to coastal ecosystem services: An expert elicitation approach. Journal of Environmental Management 199: 229–241. Available: http://dx.doi.org/10.1016/j.jenvman.2017.05.032.en
dc.identifier.issn0301-4797en
dc.identifier.doi10.1016/j.jenvman.2017.05.032en
dc.identifier.urihttp://hdl.handle.net/10754/625014-
dc.description.abstractCoastal environments are some of the most populated on Earth, with greater pressures projected in the future. Managing coastal systems requires the consideration of multiple uses, which both benefit from and threaten multiple ecosystem services. Thus understanding the cumulative impacts of human activities on coastal ecosystem services would seem fundamental to management, yet there is no widely accepted approach for assessing these. This study trials an approach for understanding the cumulative impacts of anthropogenic change, focusing on Tasman and Golden Bays, New Zealand. Using an expert elicitation procedure, we collected information on three aspects of cumulative impacts: the importance and magnitude of impacts by various activities and stressors on ecosystem services, and the causal processes of impact on ecosystem services. We assessed impacts to four ecosystem service benefits — fisheries, shellfish aquaculture, marine recreation and existence value of biodiversity—addressing three main research questions: (1) how severe are cumulative impacts on ecosystem services (correspondingly, what potential is there for restoration)?; (2) are threats evenly distributed across activities and stressors, or do a few threats dominate?; (3) do prominent activities mainly operate through direct stressors, or do they often exacerbate other impacts? We found (1) that despite high uncertainty in the threat posed by individual stressors and impacts, total cumulative impact is consistently severe for all four ecosystem services. (2) A subset of drivers and stressors pose important threats across the ecosystem services explored, including climate change, commercial fishing, sedimentation and pollution. (3) Climate change and commercial fishing contribute to prominent indirect impacts across ecosystem services by exacerbating regional impacts, namely sedimentation and pollution. The prevalence and magnitude of these indirect, networked impacts highlights the need for approaches like this to understand mechanisms of impact, in order to develop strategies to manage them.en
dc.description.sponsorshipWe would like to thank the Cawthron Institute for their generous support of this research, funded in part by the Ministry of Business Innovation and Employment grant MAUX1208. Special thanks to Mark Newton, Dana Clark, Sarah Klain, and Paige Olmsted for helping with the workshop. We would also like to thank the experts who took part in this study. G.G.S would like to thank the Pacific Institute for Climate Solutions and NSERC for their support.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0301479717304917en
dc.subjectCumulative impactsen
dc.subjectCoastal ecosystem servicesen
dc.subjectExpert elicitationen
dc.subjectSocial-ecological systemsen
dc.subjectAssessment under uncertaintyen
dc.subjectRisk assessmenten
dc.titleMechanisms and risk of cumulative impacts to coastal ecosystem services: An expert elicitation approachen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalJournal of Environmental Managementen
dc.contributor.institutionInstitute for Resources, Environment, and Sustainability, The University of British Columbia, Vancouver, Canadaen
dc.contributor.institutionCawthron Institute, Private Bag 2, Nelson, New Zealanden
dc.contributor.institutionNational Center for Ecological Analysis and Synthesis, Santa Barbara, USAen
dc.contributor.institutionBren School of Environmental Science & Management, UCSB, Santa Barbara, CA 93101 USAen
dc.contributor.institutionSilwood Park Campus, Imperial College London, Ascot, SL57PY, UKen
kaust.authorEllis, Joanneen
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