| snippet:
|
The global indicators developed by the Reefs at Risk Revisited project enable comparative analyses of threats to coral reefs on many scales, and support conservation priority-setting. The Reefs at Risk indicators are a simplification of human activities and complex natural processes, but provide globally-consistent indicators of relative human pressure on coral reefs. |
| summary:
|
The global indicators developed by the Reefs at Risk Revisited project enable comparative analyses of threats to coral reefs on many scales, and support conservation priority-setting. The Reefs at Risk indicators are a simplification of human activities and complex natural processes, but provide globally-consistent indicators of relative human pressure on coral reefs. |
| accessInformation:
|
Burke, Lauretta & Reytar, Katie & Spalding, Mark & Perry, Allison. (2011). Reefs at Risk Revisited. |
| thumbnail:
|
|
| maxScale:
|
5000 |
| typeKeywords:
|
[] |
| description:
|
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>Reef grid cells have been classified by estimated threat from watershed-based pollution. The threat to reefs from land-based pollutants was modeled for over 300,000 watersheds (catchments) discharging to coastal waters. Relative erosion rates were estimated across the landcape based on slope, land cover type, precipitation, and soil type. Sediment delivery at the river mouth was estimated based on total erosion in the watershed, adjusted for the sediment delivery ratio (based on watershed size) and sediment trapping by dams and mangroves. Sediment plume dispersion was modeled using a linear decay rate from the river mouth and was calibrated against actual sediment plumes observed from satellite data. Values of 0 indicate low threat, 100 indicate medium threat, 1000 indicate high threat.</SPAN></P></DIV></DIV> |
| licenseInfo:
|
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable, WRI cannot assume liability for any damages or misrepresentations caused by any inaccuracies in the data, or as a result of the data used on a particular system. WRI makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.</SPAN></P></DIV></DIV> |
| catalogPath:
|
|
| title:
|
Coral reefs classified by watershed-based pollution threat (grid) |
| type:
|
|
| url:
|
|
| tags:
|
["coral reefs","watershed-based pollution","sediment","global"] |
| culture:
|
en-US |
| name:
|
|
| guid:
|
|
| minScale:
|
150000000 |
| spatialReference:
|
|