Cumulative Stress, Laurentian Great Lakes 2000-2009

Metadata Updated: February 27, 2019

We assembled data for 34 stressors likely to have adverse impacts on species, biological communities, or ecosystem dynamics across the entire surface of the Great Lakes, excluding connecting channels. Stressors were mapped at a square km resolution by interpolating or resampling as needed. We modeled the spatial footprint of stressors with influence beyond their point of origin using an exponential decay function with stressor-specific coefficients for stressors from tributary inputs and assumed that influence extended 1 km into the lake and transferred the shore-side stressor value to the adjacent lake-side pixel for shore-based stressors. To account for the differential vulnerability of various habitats to each threat, we developed a habitat classification and, using expert elicitation methods, we distilled survey responses from Great Lakes experts into quantitative weightings of the relative impact of each stressor on ecosystem condition for each lake and habitat type. The standardized value of each stressor's intensity was multiplied by its relative weight, pixel by pixel, and cumulative stress (CS) was computed additively as the sum of the weighted stressors. The resulting data set is an ESRI Grid, with a resolution of 1 square km. Source data were from multiple sources for the years 2000-2009, when possible.

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date February 7, 2019
Metadata Created Date February 27, 2019
Metadata Updated Date February 27, 2019
Reference Date(s) []
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Metadata Source

Harvested from NOAA CSW Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Date February 7, 2019
Metadata Created Date February 27, 2019
Metadata Updated Date February 27, 2019
Reference Date(s) []
Responsible Party Unknown
Contact Email
Access Constraints
Bbox East Long -75.1437
Bbox North Lat 49.15213
Bbox South Lat 40.99667
Bbox West Long -92.52771
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Frequency Of Update
Guid gleam_all
Harvest Object Id f2faf876-0fda-4996-b3c7-20128e97cbf7
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Metadata Language eng
Metadata Type geospatial
Spatial Data Service Type THREDDS OPeNDAP
Spatial Reference System
Spatial Harvester True

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