ESRI Conservation Program Resources:

Methods, Technologies & Software

(Sites of interest for mapping/GIS, scholarly papers and ESRI Conference Proceedings) (Under Construction)


Software & Shared Application Libraries

ADE-4, France . (Jean Michel Olivier, Laboratoire d'Ecologie des Eaux Douces et des Grands Fleuves, URA CNRS 1974, Université Lyon 1, 69622 Villeurbanne Cedex, France, Fax: (33) 72 43 11 41 - Phone: (33) 72 43 13 19) "Ecological Data Analysis : Exploratory and Euclidean methods in Environmental sciences: is a multivariate analysis package for environmental data. A series of multivariate techniques permits to analyze several types of data (e.g., quantitative, qualitative, presence/absence). The examples included in ADE-4 for trial runs mainly deal with ecological questions." Macintosh and Windows 95 .

AI-GEOSTATS Spatial Data Statistics Website, Italy. . (Environment Institute, Environmental Monitoring Unit, I-21020 Ispra (Va) Italy, Grégoire Dubois, Tel. 39-332-78.99.44 email: gregoire.dubois@jrc.it ) "This site is fully dedicated to the AI-GEOSTATS mailing list. Its main goal is to promote communication about spatial data analysis (GIS, geostatistics, geoinformatics, spatial statistics, sampling strategies,...) between persons working in different fields.... The AI-GEOSTATS mailing list was established by the 26th of April 1995 with the help of Jeff Wolfe (Penn State University). Initially called AI (for ArcInfo, a widely distributed GIS) and GEOSTATS (for geostatistics), this mailing list act as a forum for the dissemination and discussion of all aspects of spatial statistics (there is no restriction to ArcInfo and geostatistics anymore !).

ArcInfo Imagemap Macro, Md . (Developed by Ian L Thomas, GIS & Remote Sensing Unit, Biological Resources Division USGS Patuxent Wildlife Research Center, Laurel, MD 20708-4017. Tel: (301) 497-5636 Fax: (301) 497-5666 email: ian_thomas@usgs.gov, WWW: http://www.mbr-pwrc.usgs.gov/geotech ) Purpose: To produce standard WWW imagemaps (html script, gifs, map files and link pages) from any ArcInfo polygon coverage. Currently there is much programming effort (eg. MapObjects) to produce java based GIS web applications that download the actual ArcInfo data. However, while this allows greater flexibility, it can be slow and buggy. The end user may also need a compatible web browser and a fast internet connection. The alternative method, using standard WWW imagemaps, should be compatible with almost all browsers. Access times are also fast as the link images or files have already been prepared and are sitting on the web server ready for download. How Its Done: This macro takes a standard arcinfo polygon coverage, creates a GIF image, generalizes it to reduce the number of vertices, and then loops through (using a cursor) each polygon in turn, collecting the polygon's vertices as screen coordinates and outputting this to a map file and then adding a link file. Requirements: Unix ArcInfo

ArcGMT: A suite of tools for conversion between ArcInfo® and Generic Mapping Tools (GMT) (Dawn Wright, Ray Wood, and Brendan Sylvander ) "ArcGMT is a new suite of tools for converting Generic Mapping Tools (GMT) grids to a format readable by the ArcInfo® and ArcView® geographic information system (GIS) packages, and conversely, for creating GMT grids and files from ArcInfo formats. GMT has arisen as an unofficial standard among geoscientists for producing maps, particularly from marine bathymetry, sidescan sonar imagery, gravity, and magnetics data."

Arcscripts: ESRI ArcView Scripts Repository "ESRI has greatly expanded its popular scripts repository on its Web site to give users better access to both ESRI and user-developed scripts and make it easier for users to add their own scripts. The expanded area is known as ArcScripts "

ArcView Extension for the analysis of Animal Movement Patterns: (By Philip N. Hooge, Glacier Bay Field Station, Philip_Hooge@usgs.gov) "The USGS-Alaska Biological Science Center announces the availability of a software tool for the analysis of animal movements within an integrated GIS environment. The software, written by Philip N. Hooge of the Glacier Bay Field Station, is a collection of 32 functions that comprise an extension to the ArcView GIS program, which is available on Unix, PC or Macintosh platforms. Functions in the extension include: parametric and non-parametric home range models, a test for site fidelity, sample size tests, tests of complete spatial randomness, and functions to aid in path analysis, habitat selection and the GIS processing of locational information. The program and online documentation can be downloaded from the Internet at http://www.absc.usgs.gov/glba/gistools/index.htm. Also available is a package of raster GIS tools to extend the capabilities of the Spatial Analyst extension to ArcView. This program comes in two versions one requiring Spatial Analyst. (full implementation) and the other requiring only ArcView (several functions disabled). The current version is 1.01 uploaded on 4/21/98. This version is still being tested so please use with caution and send all comments and bug reports to Philip_Hooge@usgs.gov. "

ArcView Environmental Software Tools page . (CommEn Space, Wa e98 . (1305 4th Ave. #303 Seattle WA 98101 tel:206-749-0112 email:info@commenspace.org GIS contact: Chris Davis, Eugene Martin ) "We also believe in sharing our development software resources with other individuals and organizations working for environmental protection. If we have the need for certain processes or analyses in our work, you can be sure that other people working on environmental GIS projects have these needs too. The following links will permit you to download Avenue scripts developed by CommEnSpace technicians and distributed on ESRI's ArcScript website. " . "CommEnSpace is pleased to announce the release of FlowZones1.2, an ArcView 3.1 Extension for delineating areas that contribute overland flows into a given point. -auto detection and loading of required extensions (spatial analyst) -better file management and cleanup -detailed help for each function -utilities for detecting and correcting non-channel points -raster to vector conversion that preserves grid verticies (no polygon generalization) . Spatial.AlignedGridExtract: "Have you ever noticed that clipped grids in ArcView don't always line up with the original data cells? Keeping clipped or extracted grids aligned with the original grid data source is difficult in ArcView because the grid analysis extent is not snapped to cell edges. CommEn Space has solved this problem and is pleased to share these solutions with the GIS user community. Each of the following scripts uses the same underlying process to snap a user rectangle to the cell edges of a grid or image theme. An aligned clipped theme is the result of the operation. While these scripts do work, they have not been extensively tested - feedback on their performance is appreciated. Image.Snap2CellExtract" . .ColorSwatchDelux v. 1.0 "Working with colors in ArcView, but are having trouble visualizing your options? ColorSwatchDelux is a new extension developed at CommEn Space to solve this difficulty. This simple tool requires just three input variables that specify a base color and generates a 625 cell color prism in a new layout based upon that color. HSV and RGB codes identify each color in the prism for easy development of palattes and color ramps. Printed output helps to calibrate screen/printer color treatment and can assist in color selection of map layouts. Click here to view sample output (lo resolution).

ArcView Xtools, Oregon Dept. of Forestry () "Xtools is an ODF-developed ArcView Extension with many tools useful in doing GIS analysis using ArcView...This extension contains useful tools developed, collected, or modified by Mike DeLaune, Oregon Department of Forestry...An Xtools Menu with menu items that are equivalent in purpose to some ArcInfo Commands. In the following list, the equivalent ArcInfo commands are in parentheses: Buffer Selected Features (BUFFER) Clip With Polygon(s) (CLIP) Erase Features (ERASE) Identity (IDENTITY) Intersect Themes (INTERSECT) Merge Themes (PUT, GET) Union Polygon themes (UNION) Update Polygon Theme (UPDATE) "

CITYgreen Software: (American Forestry Association, Wash DC e93. P.O. Box 2000 Washington, DC 20013 (202) 955-4500, contact Chris Daniel) CITYgreen is an ArcView extension for mapping urban ecology and measuring the economic benefits of trees, soils and other natural resources. It's available at an educational discount for $395, Please email to cgreen@amfor.org to enquire about non-profit conservation group pricing. "CITYgreen is a GIS software application that helps people understand the value of trees to the local environment. Planners and natural resources professionals use the program to test landscape ordinances, evaluate site plans and model development scenarios that capture the benefits of trees. CITYgreen is a GIS solution available to your own community." CITYgreen Training is available as 2-day workshops across the country including intro ArcView training . You can order a FREE COPY of the demo CD-ROM here, or see the ONLINE Tutorial here .

Helios Environmental Modeling Institute (HEMI) Ks: . (University of Kansas, Lawrence, KS 66045 USA tel: (913)864-7769 FAX: (913)864-7789 . GIS Contact: Dr. Paul M. Rich, Associate Professor, e-mail: prich@oz.kbs.ukans.edu ) "provides a variety of advanced environmental modeling and measurement capabilities, as well as geographic information system (GIS) consulting services." Products: The Helios Suite of Software . . -HemiView - software for the analysis of hemispherical photographs, now available commercially from Delta-T Devices, Ltd. . . -TopoView - software for calculation of insolation maps from digital elevation models (DEMs). [Order Now] . . -Solar Analyst - software providing solar simulation tools accessible through ArcView GIS, including capabilities of TopoView plus many enhancements. Available in 2000." FREE SOFTWARE: . . -Solarflux Free - software for calculation of insolation maps (ArcInfo AML; requires ArcInfo to run & has various limitations) . . . -LAICalc Free - software for calculation of leaf area index (LAI) from gap fraction data. . . . -Canopy Free - software and source code for analysis of hemispherical photographs (DOS based, uses specialized hardware). . . .-Image Free - software and source code for image analysis (DOS based, uses specialized hardware).

-Innovative GIS Solutions, Longmont CO e90 .(2000 So. College Ave. Suite 300, Ft. Collins, CO, 80525, Phone: (970) 490 5900 Fax: (970) 490 2300 . email: igis@innovativegis.com . Jhon Goes In Center, Native Business Advisor, mailto:jgic@innovativegis.com or David J. Buckley, Corporate GIS Solutions Manager, mailto:dbuckley@pacificmeridian.com ) The only US GIS consulting firm founded by and presided over by a Native American. , technological innovator in advanced landscape analysis. Now a part of Pacific Meridian Resources as their Colorado Office. Check out their Resources Software Products: FRAGSTATS*ARC: Landscape structure and spatial pattern analysis for ArcInfo . Virtual Forest: Realistic 3-D visualization of forested landscapes . RAPiD AML: Application development environment for ArcInfo AML . RAPiD Surfing: Intuitive interface for ArcInfo 3-D capabilities of TIN and GRID . Harvest Block Planner Detailed block plan preparation for non-GIS specialists

Institute for Biogeography, Universitaet des Saarlandes . Windows GIS Share/Freeware, Geo-Vu, OzGIS 4, Windows IDRISI Modules, Fragstats, Surface Interpolator, US 3D Atlas, Landscape Explorer, Map Maker, GADS.

Least Cost Path Analysis Applet Live Demo Site, Wy . (Craighead Environmental Research Institute) . "This applet (created by Michael Gilpin) demonstrates route-finding algorithms that have some applicablility to the way that animals may move through the environment. Each cell represents an area of habitat. As an animal moves it has choices to make. -Each cell represents a "cost" to the animal. -Low cost (light green) is good in terms of disturbance, stress, danger, energy expediture (as in finding food, security) etc. -High cost (bright red) is bad;there are characteristics of that habitat that the animal will avoid if possible....Computer simulations like these are only the first step in identifying corridors for animal movements. These may provide a shortcut for where to look more closely on-the-ground. It is extremely important to examine each area closely, relate the habitat and topography to what you know about the behavior of the animals in question, and get the advice of local residents and professional biologists who know what areas are actually being used by animals. "

National Park Service AML Scripts Library . (Bill Slocumb (Bill_Slocumb@ncsu.edu) Collection of over 30 programs for basic to advanced tasks, including system utilities.

National Park Service . Metadata Management System (MMS).(by Peter Budde, MWSO-GIS) "MMS provides a framework for documenting each layer in the GIS and maintains the information in an Access database format. The greatest strength of MMS is its seamless integration with ArcView 3.0x GIS, an interface to the metadata is provided via an ArcView extension. "

NPS Cultural Resources Mapping & GIS Division, Dc . MAPIT: Mapping & Preservation Inventory Tool .(Cultural Resource Mapping Services, Heritage Preservation Services, National Park Service, 1849 C Street NW, NC330, Washington DC 20240 Contact: John Buckler (202) 343-3936 mailto:John_Buckler@nps.gov, OR Deidre McCarthy at (202) 343-9548 mailto:deidre_mccarthy@nps.gov . fax (202) 343-3921 ): MAPIT is an ArcView Extension "designed to organize historic resource inventories in a computerized database with sophisticated mapping capabilities, and combines information about where historic properties are located with information about how these properties look. MAPIT can display inventory information as a map, chart, or table. Through a linked database MAPIT can also generate standard survey forms, National Register of Historic Places nomination forms, and other forms used by preservationists--all in a computerized environment. "

Mapping & Preservation Inventory Tool (MAPIT): "MAPIT is designed to organize historic resource inventories in a computerized database with sophisticated mapping capabilities, and combines information about where historic properties are located with information about how these properties look."

NOAA Coastal Services Center, Sc . (2234 South Hobson Avenue Charleston, SC 29405-2413 843-740-1200 (phone) 843-740-1224 (fax) mailto:csc@csc.noaa.gov) Geographic Information System Extensions for ArcView® : Metadata Collector Extension . Standard Digital Data Exchange Format Extension for ArcView® 3.0 . NOAA Nautical Chart Extension for ArcView® 3.0 . Lidar Data Handler .

NOAA Pacific Marine Environmental Laboratory, Wa . (NOAA R/PMEL 7600 Sand Point Way NE, Seattle, WA 98115 PH: 206-526-6239 FAX: 206-526-6815 ) . Java Map Display Package by Jonathan Callahan: callahan@pmel.noaa.gov "A key element of such an approach is the map display package which allows the user to select a region in x-y space. This selection can then be converted into latitude, longitude, depth/height or time. The rest of this document will discuss the design and implementation of a map display package which will be generic enough to be used in a variety of NOAA data servers. Special consideration will be give to the case of servers providing gridded geophysical data."

Patuxent Wildlife Research Center . The USGS Biological Resources Division uses geospatial technologies for biological applications. Through the use of geospatial technologies, remotely sensed data, and dynamic spatial models, scientists analyze current habitat conditions to understand changing environmental effects on the biological resources of the Nation.

PlantMaster from Acacia Software, Ca . "The program was designed for and by Landscape Design Professionals. PlantMaster is an open database system that serves as both an electronic horticultural journal and a plant portfolio builder for landscape clients. "

RAMAS, Ny, . (Ecological and Environmental Software by Applied Biomathematics, 100 North Country Road, Setauket, New York 11733, USA Tel: 516-751-4350, Fax: 516-751-3435) "RAMAS is a software library for building ecological models. RAMAS programs incorporate species-specific data to predict the future changes in the population and assess the risk of population extinction or explosion and chances of recovery from a disturbance. "

SKIS, the Six Kingdom Inventory System . PC program for data capture to create and manage taxonomic checklists. Comes with classification lists of all Mammal and Plant families as well as all Seabird species.

Software Contributions to the Wildlife Society Bulletin . The following software have been published in the Wildlife Society Bulletin. Programs: CONTRAST: Testing for differences among survival or recovery rates, SIZETRAN: Analysis of size-biased line transect data, SPADS: Simplified plotting analysis and data storage for telemetry, BirdBase 2 - A database system for bird sightings, TRANSAN: Line transect estimates based on shape restrictions, PUMA: A population simulator for cougar conservation, TRENDS: Software for a power analysis of linear regression, HEICALC: Elk habitat-effectiveness index software, CALHOME: a program for estimating animal home ranges, many others.

Wildlife Ecology Software Server , (Illinois Natural History Survey) , "This site continues to develop as a clearinghouse for wildlife ecology related software....We solicit programs within the following categories for inclusion at this site: habitat analysis, diversity indices, simulation, general population dynamics, capture/recapture, survival, energetics, statistics, home range, telemetry, data collection, and other wildlife ecology related categories that have not occurred to us. "

UNDP/UNESCO/ONUDI Regional Program of Biotechnology Software List .

US Bureau of Land Management AML Library: Below is a collection of AML's which have been created by the GIS Support Staff. .see also the BLM National Applied Resource Science Center AML Library .

US Fish & Wildlife Service National Wetlands Inventory Software Library . Amls, smls, unzipping software, NWI code parsing software and a public domain version of tar for MS-DOS.

USGS AML and ESRI tools library: (Dave Catts , USGS: )

USGS BRD Patuxent Center WWW Map Gallery Macros . ( Ian Thomas, GIS Analyst, PWRC GIS & Remote Sensing Unit, Biolgical Resources Division USGS Patuxent Wildlife Research Center, Laurel, MD 20708-4017. Tel: (301) 497-5636 Fax: (301) 497-5666 Email: ian_thomas@usgs.gov, ) "To produce standard WWW GIF images and linking html code from a screen capture of any Arcplot session. . ArcInfo Imagemap Macro : "To produce standard WWW imagemaps (html script, gifs, map files and link pages) from any ArcInfo polygon coverage."

WWW Map Gallery Macro . (Developed by Ian L Thomas GIS & Remote Sensing Unit, Biological Resources Division USGS Patuxent Wildlife Research Center, Laurel, MD 20708-4017. Tel: (301) 497-5636 Fax: (301) 497-5666 email: ian_thomas@usgs.gov, WWW: http://www.mbr-pwrc.usgs.gov/geotech ) Purpose: To produce standard WWW GIF images and linking html code from a screen capture of any Arcplot session. How Its Done: This macro launches a menu for user input, makes a screencapture of the existing Arcplot window, creates a GIF image and copies it to an existing web directory on your web server, then adds a link to an existing index file. Requirements: Unix ArcInfo

Scholarly papers and ESRI Conference Proceedings

(Legend: ESRI User Conference Papers list the title, then in parentheses "paper" or "abstract" plus the year. Other web-located papers list title, author if known, and excerpt.)

BioMapper-ArcView Version 3.0 - Extension for Species Distribution Mapping . (Paul Schreilechner BIOGIS Consulting HellbrunnerstraBe 34 A-5020 Salzburg, AUSTRIA Telephone: 43 662 452216 or 43 Fax: 43 662 452216 E-mail: biogis@hrm.co.at) . BioMapper an ArcView Version 3.0 extension was developed for the project "Water Mollusca Mapping in Salzburg, Austria". BioMapper includes a bundle of tools (Avenue scripts and Visual Basic forms) and a customized interface of ArcView Version 3.0. Species distribution data is stored in MSAccess....About the project: Freshwater snails and mussels in Salzburg Austria, were mapped. Many species of freshwater molluscs are dependent upon certain ecological situations. Biology, ecology, taxonomy, and the demands on habitats are well known in most species. They are not bound to a certain season (like many insects) and are usually found throughout the year. Former existence of species can be verified by the help of empty shells. There exist about eighty publications on the distribution of water molluscs in the region of Salzburg, most of them more than forty years old. Up to now 36 species of freshwater snails and 21 species of mussels have been described, whereby 28 of the snails and 15 of the mussels are cited in the Red List. One species (Unio crassus) has been extinct since the 1950's and 4 species have been imported to Salzburg within the last two decades. Goals of the project: Use of watermollusca as bioindicators, environmental planning and Bioinventar ZOODAT.

"BUILD"ing on to ArcView GIS with the Data Automation Kit (Submitted by Scott Barnwell, National Park Service MWSO-GIS) "Probably the best reason to add DAK to ArcView GIS is independence. Its tools allow one to import and edit a variety of data formats. "

GPS Referenced Aerial Video for Accuracy Assessment of a Small-Scale Landcover Map (1996 ESRI Conf. Paper, Douglas H. Kliman,Stuart E. Marsh, Rodrick A. Hay)...GPS referenced aerial video offers a means for rapidly acquiring large transect samples for use in a GIS. In this application, an accuracy assessment was performed to evaluate a 13 class AVHRR derived land-cover map of Arizona. A light aircraft was used with an oblique color video camera. GPS location was titled on each video frame. Land-cover class was interpreted from the video and plotted onto flight lines. The segmented flight lines were overlaid on the land-cover map and a coefficient of agreement calculated.

Geographical Information Systems, Remote Sensing Techniques, and GPS-Based Field Verification Methodologies for Mapping Vegetation Change at Chiricahua National Monument, Arizona (1996 ESRI Conf. Paper, Michael R. Kunzmann, Susan M. Skirvin, Peter S. Bennett, and Craig A. Wissler)...To assess vegetation change at Chiricahua National Monument, an ArcInfo-based GIS has been developed as well as a revised Brown, Lowe, and Pase vegetation classification system. The GIS and vegetation classification systems in conjunction with numerous remote sensing methodologies and computer-based automated field mapping techniques, have been indispensable tools in the process of creating an up-to-date vegetation map.

Improving Field Data Collection Through The Integration of ArcView 2.1 and GPS Technology (1996 ESRI Conf. Paper, Brian Biggs and Allan Falconer)...An application has been developed to facilitate real time electronic data collection that is spatially pinpointed using a Global Positioning System receiver in combination with the ArcView 2.1 GIS software package. Scripts were written in the Avenue programming language to pan and zoom GIS coverages to a point obtained from a GPS receiver. Further scripts allow the user to enter points, lines, or polygons and attribute them in real time with full error checking.

Integrating Aerial-Videography with ArcInfo for Satellite Image Interpretation and Accuracy Assessment in Vermont (1995 ESRI Conf. Paper, Joel Schlagel)...Both the usefulness and effectiveness of air-video image interpretation can be enhanced by integrating video imagery with other spatial databases in ArcInfo. A series of programs, shell scripts, and AMLs, were written to facilitate this process. The user interface allows control of video tape recorders, and the real-time display of the flight position on a workstation monitor.

The Integration of GIS and Image Processing Technology with Real-time Data Collection for Monitoring Wetland Restoration Projects (1995 ESRI Conf. Abstract, Deborah Fuller, John Barras, Lawrence R. Handley, Gregory D. Steyer, Steve Hartley, Wei Ji)...Site specific DCP measurements include such things as water level, water velocity, salinity, precipitation, turbidity, and dissolved oxygen. These data are transmitted to a centralized database via the Geostationary Operational Environmental Satellite (GOES) network. The SSC is conducting geographic information system (GIS) analysis and image processing support for monitoring of habitat conditions utilizing scanned and rectified aerial photography with digital landcover maps photo-interpreted from high resolution color-infrared aerial photography. DCP data platform locations and ground control points for habitat data are georeferenced using GPS. These data are stored in a central database, which links the temporal biological and digital spatial data.

Integration of GPS Locational Data in a GIS to Manage Native Plants, and Control Non-Native Invasive Plants, on Santa Catalina Island, Bushing, Dr. William W., Janet Takara and Herman Saldaña. "The Santa Catalina Island Conservancy is responsible for the ecological management of more than 42,000 acres (17,000+ ha) of high relief landscape. Identifying the ecologically significant factors determining native plant species distributions, and controlling the spread of invasive non-native plants, over such a large area is a difficult task. GIS provides the island-wide perspective necessary to address these important ecological issues. Recently the Conservancy initiated a long-term program to map native and non-native plant species locations in the field. This data is imported into an established enterprise GIS where the distributions may be visualized and statistically analyzed. Appropriate ecological management strategies for the conservation of native taxa, and the control of invasive non-natives, are determined based in part on this information. Handheld GPS receivers taken into the field by Conservancy employees and volunteers will be used to record the desired species locations as they are encountered either opportunistically or through systematic surveys. Once integrated with previously collected data, the distribution patterns for individual taxa may be analyzed relative to the topographic and environmental GIS data layers to determine any correlations, and give a better understanding of each taxon's ecological requirements to help the organization formulate its ecological management strategies. "

Inventorying and Mapping Wetlands on Naval Air Station, Fallon, Nevada: Utilizing Global Positioning Receivers, Photogrammetry Remote Sensing, and Geographic Information Systems (1995 ESRI Conf. Abstract, Anthony C. Curtis)...Today's technology provides the wetlands ecologist with the tools to not only take his digital planning maps, digital NWI maps and U.S. Geological Survey Digital Line Graphs (DLG) to the site, but to pin-point his precise position utilizing real-time differentially corrected GPS receivers onto these digital maps. With this technology, the ecologist can accurately delineate the wetlands boundaries, and conduct an inventory analysis without returning to his office. Naval Air Station Fallon, Nevada, was the subject installation for this study.

Linking GIS with Models of Ecological Risk Assessment for Endangered Species (H. Resit Akcakaya, Applied Biomathematics 100 North Country Road Setauket, NY 11733, USA, Third International Conference on Integrating GIS and Environmental Modeling, at Santa Fe, New Mexico, on January 23, 1996. ) "A model that links GIS to models for viability analysis and risk assessment is applied to endangered species, including the Spotted Owl in the northwestern US, the Red-cockaded Woodpecker in Louisiana, and the California Gnatcatcher in Orange County, California. The model integrates landscape data on habitat requirements with demographic data to analyze risks of extinction, evaluate management options, and assess human impact on wildlife populations. "


All text by the respective organizations/authors, January 2, 1997

Web layout & design: Charles Convis, ESRI, January 2, 1996

ESRI Conservation Program Home


|   Software - Data - Books - Consulting - GIS Store    |    News - Events - Careers - About ESRI   |
|   Support - GIS Education & Training - GIS for Your Specialty - Partner Solutions - Library   |

Copyright © Environmental Systems Research Institute, Inc.
Send your comments to: webmaster@esri.com
ESRI Web Site Privacy Policy
July 19, 2000