Encyclopedia of Global Change (2005)Encompassing tsunamis, elephant conservation, ocean pollution, mining regulation, and permafrost melt, the 300 authoritative articles in this unique and wide-ranging encyclopedia investigate all types of phenomena that change life on Earth. The entries cover a range of general research categories: altered ecosystems, climate change, food and water supply, population, politics and global change, institutions and policies, biographies, and case studies.' (from database homepage)
NatureServe: an online encyclopedia of life (2000-)"A source for authoritative conservation information on more than 50,000 plants, animals, and ecological communities of the United States and Canada. NatureServe provides in-depth information on rare and endangered species, but include common plants and animals too. NatureServe is a product of the Association for Biodiversity Information in collaboration with the Natural Heritage Network."