World Wildlife Fund Ecoregions

 

GeoDataset name: WWF_Eco

World Wildlife Fund Ecoregions represent 24,944 defined global ecoregions. Ecoregions are defined as relatively large areas of land or water that share a large majority of their species, dynamics, and environmental conditions.

 

 WWF_Eco -- World Wildlife Fund Ecoregions

24,944 polygons, 5 descriptive fields. Defines the World Wildlife Fund Ecoregions.

Fields:

Ecoregion -- The ecoregion name. They are defined as relatively large areas of land or water that share a large majority of their species, dynamics, and environmental conditions. There are nearly 900 ecoregions for the world. (String)

 

Mht_name -- The major habitat for the area. There are 16 major habitats for the world. (String)

 

Bdi -- The biological distinctiveness index. It is based on the species richness, endemism, rareness, etc. (Number)

 

1 = Globally Outstanding

2 = Regionally Outstanding

3 = Bioregionally Outstanding

4 = Locally Important

 

0 = Not Assessed or Unknown

 

Threat -- The degree of threat to the ecoregion. Such threats are from logging, conversion to agriculture/urbanization, etc. (Number)

 

1 = Critical

2 = Endangered

3 = Vulnerable

4 = Relatively Stable

5 = Relatively Intact

 

0 = Not Assessed or Unknown

 

Final -- The final assessment of the ecoregion as the estimated threat to the ecoregion over the next 20 years. (Number)

 

1 = Critical

2 = Endangered

3 = Vulnerable

4 = Relatively Stable

5 = Relatively Intact

 

0 = Not Assessed or Unknown

 

 

World Wildlife Fund Ecoregions - Technical Description

 

GeoDataset name: WWF_Eco

Shapefile name: wwf_eco.shp

Path: ESRI Data & Maps 1 (CD) \world

GeoDataset type: WWF_Eco is an ESRI shapefile with polygon features.

GeoDataset lineage: This geodataset is from the World Wildlife Fund using ESRI's Digital Chart of the World for the basemap.

Coordinate system: Latitude/Longitude in decimal degrees.

Datum Name: World Geodetic System of 1984 datum.

Coordinate precision: Double.

 

Useful display scales:

Suggested display scales are as follows:

 

For the entire world:  1:200,000,000

For individual continents:  1:100,000,000

For regions of the world:  1:50,000,000

 

Largest scale:  1:5,000,000