Site to learn about, view, and order digital image vegetation condition (greenness) maps of the conterminous U.S. based on the Normalized Difference Vegetation Index (NDVI) with imagery from Advanced High Resolution Radiometer (AVHRR).
List of plant specimens and photo gallery of plants in the collection of the herbarium at the Patuxent Wildlife Research Center, a reference collection of plants occurring in the area lying between Baltimore, Maryland and Washington D.C.
Selection of photographic images of the Long Valley area that illustrate the consequences of the past geologic history of the Sierra Nevada, Long Valley Caldera, the Mono-Inyo Craters volcanic chain, glaciation, and faulting.
Photographs of landscapes, earth history, waterways, wildlife, changing worlds, and earth scientists. Requires Macromedia Shockwave Player plugin to view. Links to Popular products and List of USGS image collections.
Site for the Platte River Program in Nebraska an area that is a critical staging area for migratory waterbirds of the Central Flyway. Includes links to color-infrared aerial photos, 1938 historic aerial photos, and Cottonwood Ranch research site.
Description of the priority ecosystems studies initiative with links to projects in Chesapeake Bay, Greater Yellowstone, Mojave Desert, Platte River, Salton Sea, San Francisco, and south Florida.
Links to remote video monitoring field stations with video and water level data, plus links to image processing software tools, processed video examples, and other uses of video descriptions.
This report consists of materials prepared for a GIS spatial analysis course intended for instructors preparing spatial-modeling training and scientists with advanced GIS expertise. Downloads available in many formats (PDF, ArcView, Word, etc.)
Overview of research at the Restoration Ecology facility on sustainable restoration of South Florida's greater Everglades and coastal ecosystems. Includes links study of birds, snails, and alligators, ecological modeling, photos, and posters.
Gateway to the geology of the San Francisco Bay region with links to geologic maps, paleontology, marine geology, earthquakes, landslides, and geophysics. Includes maps, 3-D models, and photos.
U.S. Department of the Interior |
U.S. Geological Survey