NCEAS Project 12108

Ranking and mapping human threats and impacts to marine ecosystems in the California current

  • Benjamin S. Halpern

ActivityDatesFurther Information
Working Group26th—27th April 2007Participant List  
Working Group14th—16th January 2008Participant List  
Working Group24th—26th March 2008Participant List  

Building on a similar global effort (Mapping current threats and impacts of human activities on global marine ecosystems this project will map current threats and impacts of human activities on the California Current marine ecosystem. The project will first survey experts in six subregions of the California Current to explore geographic variation in the effects of threats. A workshop will then be held to use decision theory to evaluate the tradeoffs of using expert opinion to assess threats and associated impacts. Data on ecosystems and threats will be gathered at resolutions of approximately one square kilometer. By synthesizing information and inferences regarding anticipated impacts of threats, project participants will develop a spatially-explicit understanding of the distribution and magnitude of human threats in the California Current. Project collaborators are based at University of California, Santa Cruz; The Nature Conservancy; University of California, Santa Barbara; and the Monterey Bay National Marine Sanctuary.

TypeProducts of NCEAS Research
Journal Article Halpern, Benjamin S.; Kappel, Carrie V.; Selkoe, Kimberly A.; Micheli, Fiorenza; Ebert, Colin M.; Kontgis, Caitlin; Crain, Caitlin; Martone, Rebecca; Shearer, Christine; Teck, Sarah J. 2009. Mapping cumulative human impacts to California current marine ecosystems. Conservation Letters. Vol: 2. Pages 138-148.
Book Chapter Neslo, Rabin; Micheli, Fiorenza; Kappel, Carrie V.; Selkoe, Kimberly A.; Halpern, Benjamin S.; Cooke, Roger M. 2008. Modeling stakeholder preferences with probabilistic inversion: Application to prioritizing marine ecosystem vulnerabilities. Edited by Linkov, I.; Ferguson; E. Real time and deliberative decision making: Application to risk assesment for non-chemical stressors. Springer. Amsterdam.
Journal Article Teck, Sarah J.; Halpern, Benjamin S.; Kappel, Carrie V.; Micheli, Fiorenza; Selkoe, Kimberly A.; Crain, Caitlin; Martone, Rebecca; Shearer, Christine; Arvai, Joe; Fischhoff, Baruch; Murray, Grant; Neslo, Rabin; Cooke, Roger M. 2010. Using expert judgment to estimate marine ecosystem vulnerability in the California Current. Ecological Applications. Vol: 20(5). Pages 1402-1416. (Online version)