Biology, general

• Biodiversity Heritage Library - digitized documents from major libraries
• Bioimages - peruse a number of detailed image databases
• BioMedCentral Databases - Biochemistry
• BioMedCentral Databases - complete subject list
• Census of Marine Life - an international project
• Entrez cross-database search page - including molecular sequence databases
• Life sciences data archive - information and data from space flight experiments involving human, plant and animal studies
• National Agricultural Library Digital Repository - created in April 2006
• National Science Digital Library
• National Wetlands Research Center: Species Profiles - from the U.S. government
• National Wildlife Research Center Online Catalog
• PubChem - over 800,000 records - "contains the chemical structures of small organic molecules and information on their biological activities."
• ReefBase - "the world's premier online information system on coral reefs"
• Tree of Life - a distributed project about phylogeny and biodiversity
• U.S.Dept. of Agriculture: Office of Experiment Stations. Digital Collections
• USGS National Wetlands Research Center - recommended databases for wetlands research

Botany

• AIOPI Database of Plant Databases (DPD) - a global list of plant databases
• Algaebase - "a database of information on algae that includes terrestrial, marine and freshwater organisms"
• Bryophytes
• Canadian Forest Service - search their publications, most of which are free
• Canadian Poisonous Plants Information System - includes references
• eFloras.org - a virtual library of online floras
• Flora of Europe - "a photographic herbarium"
• FDA Poisonous Plant Database
• Missouri Botanical Garden: Databases - their own and links to other botany databases
• Native American Ethnobotany - "a database of foods, drugs, dyes and fibers of Native American peoples, derived from plants."
• Net Center for Plant Genomics - "a plant genomics-specific web search database"
• New York Botanical Garden Virtual Herbarium -
• New York Metropolitan Flora Project - "the most comprehensive study ever of the plant biodiversity in metropolitan New York"
• Parasitic Plant Connection
• Plants Database - "provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories." from the USDA.
• Royal Botanic Gardens (Kew) - "online databases, publications, bibliographies and other scientific information resources about plants and fungi.."
• TAIR: arabidopsis information resource - "a database of genetic and molecular biology data for the model higher plant Arabidopsis thaliana."
• TreeSearch - the U.S. Forest Service research publications
• World Wide Flowering Plant Family Identification - a tool to help identify possible families

Evolution

• Complete work of Charles Darwin online
• The Darwin Digital Library

Genetics

• Foundations of Classical Genetics - an online collection of documents
• Human Genome Project - a large site about this major project
• Online Mendelian Inheritance in Man - database of the authoritative information on the inheritance of human characteristics

Molecular Biology / Microbiology

• Biomolecular Interaction Network Database
• Human Mitochondrial Protein Database - "comprehensive data on mitochondrial and human nuclear encoded proteins involved in mitochondrial biogenesis and function."
• Linus Pauling and the race for DNA: a documentary history.
• Linus Pauling research notebooks.
• Microbe Project - a directory to governmet work on microbes

Zoology

• Amphibia Web - a clearinghouse for data on amphibians
• Amphibian Research and Monitoring: at USGS
• Annelid Resources - a directory. Also includes "Ward and Fauchald Polychaete Bibliography."
• AntBase.org - maintained at the American Museum of Natural History and the Ohio State University.
• Aqua KE: Government Documents - U.S. and international documents relating to aquaculture
• Avibase: the world bird database - "an extensive database information system about all birds of the world"
• Avian Literature Database - "a bibliographic database of documents of effects of wind energy development on birds"
• CephBase - "a database-driven web site on all living cephalopods (octopus, squid, cuttlefish and nautilus)"
• FishBase - "A Global Information System on Fishes", 29,000 Species, 76,000 Synonyms, 209,000 Common names, 40,000 Pictures, 37,300 References
• Freshwater and Marine Image Bank - "digital collection of images related to freshwater and marine topics"
• Global Amphibian Assessment (GAA) - a database of nearly 6,000 known amphibian species
• Global Invasive Species Database
• The Hive and the Honeybee - classic texts on bees and beekeeping
• Mollusk Bibliography Database
• MycoKey - help for mushroom identification
• New York Natural Heritage Program - includes data on rare plants and animals in N.Y.
• Nonindigenous Aquatic Species - plants and animals in the U.S. "a central repository for accurate and spatially referenced biogeographic accounts of nonindigenous aquatic species."
• North American Mammals - "a searchable database of all living mammals of North America." - brief information on each
• Online Mosquito Literature - full-text documents from Walter Reed Biosystematics Unit
• PrimateLit Database - a regularly updated bibliography of books and articles
• WAVES - the catalogue of the libraries of Fisheries and Oceans Canada