Parent Layer: Threats

Name: Cumulative Human Impact Index

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Description: Map of cumulative human impact attributes. Eight distinct human impacts to ecologically important resources were identified; vessel activity, coastal infrastructure, light pollution, coral bleaching, marine based pollution, agricultural pollution, Urban pollution and coastal pollution. They were mapped and combined into a single comparable estimate of cumulative human impact.Scores were defined by the number of overlapping ecological attributes. The score classes were divided into quintiles and areas in darker red have higher scores. We used a standardized, quantitative method, which builds on work by Halpern et al. (2008), Selkoe et al. (2009) and Reefs at Risk Revisited (2011), to map human impacts.

Copyright Text: NOAA/NOS/NCCOS/CCMA/Biogeography Branch

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