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Model Report

Analytical Tools Interface for Landscape Assessments

Last Revision Date: 11/16/2009 View as PDF
General Information Back to Top
Model Abbreviated Name:

Model Extended Name:

Analytical Tools Interface for Landscape Assessments
Model Overview/Abstract:
Environmental management practices are trending away from simple, local-scale assessments toward complex, multiple-stressor regional assessments. Landscape ecology provides the theory behind these assessments while geographic information systems (GIS) supply the tools to implement them. A common application of GIS is the generation of landscape metrics, which are quantitative measurements of the environmental condition or vulnerability of an area (e.g., ecological region or watershed). The generation of these metrics can be a complex, lengthy undertaking, requiringsubstantial GIS expertise. The U.S. EPA Landscape Ecology Branch has developed a user-friendly interface to facilitate this process. It is an easy to use ArcView extension that calculates many commonly used landscape metrics. By providing an intuitive interface, the extension provides the ability to generate landscape metrics to a wide audience, regardless of their GIS knowledge level. ATtILA is a robust, flexible program. It accepts data from a broad range of sources and is equally suitable across all landscapes, from deserts to rain forests to urban areas. Four families of metrics are included in the extension: landscape characteristics, riparian characteristics, human stressors, and physical characteristics. Each group has a dialog to accept user input on which metrics to calculate and what input data to use. ATtILA is available as a beta test version at the present time.
Model Technical Contact Information:
Donald W. Ebert
Landscape Ecology Branch
Model Homepage: http://www.epa.gov/nerlesd1/land-sci/tools.htm

User Information Back to Top
Technical Requirements
Computer Hardware
Minimum of a Pentium II 266 MHz (or equivalent)with 32 MB of memory. A preferredsystem would include a Pentium II 400MHz(or better) with 64 MB of memory and a fast(<8 ms) hard drive or better.
Compatible Operating Systems
Both UNIX and Windows (95, 98, ME, XP, and NT) environments are supported.
Other Software Required to Run the Model
To use the ATtILA, you will need version 3.1 or later of ArcView and the Spatial Analyst version 1.1 extension.
Download Information
To obtain a copy of ATtILA, please contact Donald W. Ebert (U.S. EPA) at ebert.donald@epa.gov or (702) 798-2158.
Using the Model
Basic Model Inputs
GIS coverages
Basic Model Outputs
Landscape metrics
User Support
User's Guide Available?
To obtain a draft version of the User's Guide for ATtILA, please contact Donald W. Ebert (U.S. EPA) at ebert.donald@epa.gov or (702) 798-2158.

Model Science Back to Top
Summary of Model Structure and Methods
Formal documentation will be available with updated 2004 version.

Also, See Draft User Guide.

Model Evaluation
See Draft User Guide.

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