A Mysterious Journey - Rainforest, Desert, Grassland
   Educational site about the 3 major biomes of the world, rainforest, desert and grassland.
   http://www.thinkquest.org/library/site_sum.html?tname=26634&url=26634/

Biodiversity and Mutualism in Ecosystems
   Technical paper on the importance of biodiversity and mutualism (co-operation between different species) to ecosystem function and structural organization.
   http://angelfire.com/sk/monkeypuzzle/mbiooverviewmain.html

Biomes - Living Worlds
   Fact sheets, photos, and video clips on the climate, location, animal and plant adaptations, land formations, and human influences of seven major terrestrial biomes: tundra, taiga, temperate forest, grassland, chaparral, desert, and rainforest.
   http://library.thinkquest.org/C0113340

Ecological Society of America Panel on Vegetation Classification
   Constituted by the Ecological Society of America to support and facilitate the creation of standardized, scientifically credible North American vegetation type classification.
   http://www.esa.org/vegweb/

Ecosystem Information
   Information related to ecosystems in the Pacific and Yukon regions of Canada, including state of the environment reporting, environmental indicators, and programs and reports on ecosystem science, monitoring and research.
   http://www.ecoinfo.ec.gc.ca/

Images of the Dry Tropics
   Photographs of plants, animals, and landscapes from dry tropical habitats in the Americas, Africa, Madagascar, and Asia. Dry tropical habitat types include tropical dry forest, tropical deciduous forest, thorn forest, spiny desert, savannah, cerrado, and
   http://www.explorelifeonearth.org/drytropics.html

Len Webb Ecological Images Collection
   Photographs by ecologist Len Webb depict a wide variety of native vegetation, fauna, landscapes, and soils, mainly in tropical and subtropical Northeastern Australia. Represents a wide range of ecosystem types.
   http://www.gu.edu.au/ins/collections/webb/

MBGnet
   Descriptions and images of the biomes of the world, freshwater ecosystems, and marine ecosystems. From the Missouri Botanical Garden.
   http://mbgnet.mobot.org/

Millennium Assessment of Global Ecosystems
   International project and process designed to improve the management of ecosystems and their contribution to human development by helping to bring the best available information on ecosystem goods and services to bear on policy and management decisions.
   http://www.millenniumassessment.org/

Terrestrial Ecoregions of the World
   Maps, descriptions, and index to 687 ecoregions across the globe. Javascript required.
   http://www.nationalgeographic.com/wildworld/terrestrial.html

The Buell-Small Succession Study
   A long term old-field permanent-plot ecological succession study on the New Jersey Piedmont.
   http://www.ecostudies.org/bss/

The State of the Nation's Ecosystems
   Online book about the current status and trends of the environment of the United States, aimed at public policy makers and concerned citizens.
   http://www.heinzctr.org/ecosystems/

The World's Biomes
   Introduction to aquatic, desert, forest, grassland, and tundra biomes. School class project.
   http://www.ucmp.berkeley.edu/glossary/gloss5/biome/

World Wildlife Fund - Ecoregions
   Detailed descriptions and images of the world's ecoregions. Javascript required.
   http://www.worldwildlife.org/ecoregions/

WorldBiomes
   Covering five of the major world biomes.
   http://www.worldbiomes.com/