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world_percent_karst (Map Service)


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Current Version: 10.81

Service Description:
This hosted tile layer shows the percent of each freshwater ecoregion’s area containing karst terrain. The map has been published from a layer package authored by The Nature Conservancy.

Source documentation: We derived the percentage area of ecoregions that may contain karst from the global karst data set by Williams and Ford (2006). The global karst data set was an update of a previous version from Williams and Ford that was released in 2005 by Carbon, Hydrology, and Global Environmental Systems (CHANGES), a collaboration of the International Geoscience Programme (IGCP) and sponsored by the UN Educational, Scientific and Cultural Organization (UNESCO) and the International Union of Geological Sciences. We summarized the global karst polygons by calculating the percentage area of ecoregions covered by karst. Total karst area generally reflects the distribution of karst cave systems and thus serves as a proxy of potential cave habitats. This proxy is supported by knowledge that larger cave systems usually indicate higher biodiversity and that karst biodiversity is most abundant in mid-latitude temperate regions, as displayed in the map.

These data were derived by The Nature Conservancy, and were displayed in a map published in The Atlas of Global Conservation (Hoekstra et al., University of California Press, 2010). More information at http://nature.org/atlas.

Data derived from: 
Williams, P. W., and D. C. Ford. 2006. Global distribution of carbonate rocks. Zeitschrift für Geomorphologie, Suppl. 147: 1–2. 

Citation:
Hoekstra, J. M., J. L. Molnar, M. Jennings, C. Revenga, M. D. Spalding, T. M. Boucher, J. C. Robertson, T. J. Heibel, with K. Ellison. 2010. The Atlas of Global Conservation: Changes, Challenges, and Opportunities to Make a Difference. Ed. J. L. Molnar. Berkeley: University of California Press. 

This dataset was used in a scientifically peer-reviewed publication. 

License Link:
http://creativecommons.org/licenses/by-nc/3.0/

Credits:
The Nature Conservancy 


Map Name: Layers

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All Layers and Tables

Layers: Tables: Description:
This hosted tile layer shows the percent of each freshwater ecoregion’s area containing karst terrain. The map has been published from a layer package authored by The Nature Conservancy.

Source documentation: We derived the percentage area of ecoregions that may contain karst from the global karst data set by Williams and Ford (2006). The global karst data set was an update of a previous version from Williams and Ford that was released in 2005 by Carbon, Hydrology, and Global Environmental Systems (CHANGES), a collaboration of the International Geoscience Programme (IGCP) and sponsored by the UN Educational, Scientific and Cultural Organization (UNESCO) and the International Union of Geological Sciences. We summarized the global karst polygons by calculating the percentage area of ecoregions covered by karst. Total karst area generally reflects the distribution of karst cave systems and thus serves as a proxy of potential cave habitats. This proxy is supported by knowledge that larger cave systems usually indicate higher biodiversity and that karst biodiversity is most abundant in mid-latitude temperate regions, as displayed in the map.

These data were derived by The Nature Conservancy, and were displayed in a map published in The Atlas of Global Conservation (Hoekstra et al., University of California Press, 2010). More information at http://nature.org/atlas.

Data derived from: 
Williams, P. W., and D. C. Ford. 2006. Global distribution of carbonate rocks. Zeitschrift für Geomorphologie, Suppl. 147: 1–2. 

Citation:
Hoekstra, J. M., J. L. Molnar, M. Jennings, C. Revenga, M. D. Spalding, T. M. Boucher, J. C. Robertson, T. J. Heibel, with K. Ellison. 2010. The Atlas of Global Conservation: Changes, Challenges, and Opportunities to Make a Difference. Ed. J. L. Molnar. Berkeley: University of California Press. 

This dataset was used in a scientifically peer-reviewed publication. 

License Link:
http://creativecommons.org/licenses/by-nc/3.0/

Credits:
The Nature Conservancy 


Copyright Text:

Spatial Reference:
102100

Single Fused Map Cache: true

Capabilities: Map,TilesOnly

Tile Info:
Initial Extent:
Full Extent:
Min Scale: 5.91657527591555E8
Max Scale: 1155581.108577

Min LOD: 0
Max LOD: 9

Units: esriMeters

Supported Image Format Types: PNG

Export Tiles Allowed: false
Max Export Tiles Count: 100000

Document Info: