HEADWATERS ECONOMICS GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: 
Geodataset Name: 		us_griz-core
Geodataset Type: 		SHAPEFILE
Geodataset Feature: 		POLY

GENERAL DESCRIPTION: 
This dataset shows contiguous areas of highly suitable grizzly bear habitat with a minimum size of 250 square kilometers based on grizzly bear habitat requirements.

DATA SOURCE(S):  		Craighead Environmental Research Institute

Scale of Original Source Maps:	90 meter cells
Date of Original Source Maps:	unknown

GEODATASET EXTENT:  	Greater Yellowstone Area
 
FEATURE ATTRIBUTE TABLES CODES AND VALUES: 

ITEM		ITEM DESCRIPTION
NA

DATA LINEAGE SUMMARY: 
The data were downloaded from http://y2ydata.msu.montana.edu/, and define contiguous areas of the best habitat with a minimum size of 250 square kilometers. Although 50 square kilometers represents the approximate average home-range size of a female grizzly bear within the Greater Yellowstone Area, 250 square kilometer cores were used for the regional analysis.

MAP PROJECTION PARAMETERS 
PROJECTION 			ALBERS CONICAL EQUAL AREA
DATUM 				NAD83
UNITS 				METERS
SPHEROID 			GRS1980
PARAMETERS
1st standard parallel		29 30  0.000
2nd standard parallel		45 30  0.000
central meridian		-96 00  0.000
latitude of projection's origin	37 30  0.000
false easting (meters)		0.00000
false northing (meters)		0.00000

DATA SOURCES CONTACT(S): 
Name:			Craighead Environmental Research Institute
Address:		201 S. Wallace
			Bozeman, MT 59715
Web site:		http://www.grizzlybear.org/index.php
Phone: 			406 585-8705	
Email:   		gis@craigheadresearch.org
          
HEADWATERS ECONOMICS CONTACT: 
Name:			Headwaters Economics Geographic Data Library
Abbr. Name:		HEGDL
Address:		Headwaters Economics
                        566 Highland St.
                        Helena, Montana 59601
Web site:		http://www.headwaterseconomics.org
Contact Person:   	Patty Gude	
Phone:   		(406)599-7425	
Email:   		patty@headwaterseconomics.org