WorldBiomes
Covering five of the major world biomes.

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.

The Buell-Small Succession Study
A long term old-field permanent-plot ecological succession study on the New Jersey Piedmont.

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.

The World's Biomes
Introduction to aquatic, desert, forest, grassland, and tundra biomes. School class project.

Terrestrial Ecoregions of the World
Maps, descriptions, and index to 687 ecoregions across the globe. Javascript required.

World Wildlife Fund - Ecoregions
Detailed descriptions and images of the world's ecoregions. Javascript required.

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 caatinga.

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.

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.

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.

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.

A Mysterious Journey - Rainforest, Desert, Grassland
Educational site about the 3 major biomes of the world, rainforest, desert and grassland.

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.

MBGnet
Descriptions and images of the biomes of the world, freshwater ecosystems, and marine ecosystems. From the Missouri Botanical Garden.