Shapefile
Tags
Biota, ISO 19115 Topic
Categories Flora and Fauna, Regional Ecology, and Ecosystems
Summary
These data are intended for
geographic display and analysis at the national level, and for large regional
areas. The data should be displayed and analyzed at scales appropriate for
1:7,500,000-scale data. No responsibility is assumed by the National Atlas of
the United States in the use of these data.This feature class is a component of
TPWD 'base' data. 'Base' data includes current, statewide geospatial information
intended to provide context for mapping purposes.
Description
The original file was clipped to the state of Texas. This map layer is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.S. Virgin Islands. Four levels of detail are included to show a hierarchy of ecosystems. The largest ecosystems are domains, which are groups of related climates and which are differentiated based on precipitation and temperature. Divisions represent the climates within domains and are differentiated based on precipitation levels and patterns as well as temperature. Divisions are subdivided into provinces, which are differentiated based on vegetation or other natural land covers. The finest level of detail is described by subregions, called sections, which are subdivisions of provinces based on terrain features. Also identified are mountainous areas that exhibit different ecological zones based on elevation.
Credits
USDA Forest Service and (or) National
Atlas of the United States of America
Use limitations
This data was prepared for
inclusion in the TPWD Base SDE database by Texas Parks and Wildlife Department
GIS analysts. The Texas Parks and Wildlife Department, its employees, and
personnel, make no warranty as to its accuracy. The Texas Parks and Wildlife
Department, its employees, and personnel MAKE NO WARRANTY FOR FITNESS OF USE FOR
A PARTICULAR PURPOSE EXPRESS OR IMPLIED WITH RESPECT TO THIS DATA. THIS IS NOT A
SURVEYED PRODUCT. Title 1 Part 10 Chapter 201 Rule §201.6 of the Texas
Administrative Code suggests data showing the full extent of Texas be projected
in the Texas State Mapping System. This feature class as provided by TPWD is
unprojected.
This feature class was clipped from a larger dataset available from both the National Atlas of the United States and from the USDA Forest Service Inventory and Monitoring Institute.
geometry publication date
This data was prepared for inclusion in the TPWD Base SDE database by Texas Parks and Wildlife Department GIS analysts. The Texas Parks and Wildlife Department, its employees, and personnel, make no warranty as to its accuracy. The Texas Parks and Wildlife Department, its employees, and personnel MAKE NO WARRANTY FOR FITNESS OF USE FOR A PARTICULAR PURPOSE EXPRESS OR IMPLIED WITH RESPECT TO THIS DATA. THIS IS NOT A SURVEYED PRODUCT. Title 1 Part 10 Chapter 201 Rule §201.6 of the Texas Administrative Code suggests data showing the full extent of Texas be projected in the Texas State Mapping System. This feature class as provided by TPWD is unprojected.
Internal feature number.
ESRI
Feature geometry.
ESRI
Area of feature in internal units squared.
ESRI