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Island Biogeography (Holmgren): Mapping and GIS Software

GEO Browsers

Google Earth lets you fly anywhere on Earth to view satellite imagery, maps, terrain, 3D buildings, from galaxies in outer space to the canyons of the ocean. You can explore rich geographical content, save your toured places, and share with others.

ArcGIS Explorer is a free, downloadable GIS viewer that gives you an easy way to explore, visualize, and share GIS information.

Mapping and Data

The Geospatial Data Gateway  from USDA, provides one stop shopping for natural resources or environmental data at anytime, from anywhere, to anyone. Allows you to choose your area of interest, browse and select data from our catalog, customize the format, and have it downloaded. will help you find data or map servers, make a map, browse community information, cooperate on data acquisitions and publish your data and map services.

      ESRI Free-Data  Explore how you can make interactive maps and share them with others