Algae

• See links through Missouri State Phycology course website.

Freshwater Fishes

• American Fisheries Society - Information on the society, employment resources, links to other societies, academic journals, and abstracts from recent meetings.
• Fish Links at the Virtual LibraryFishes of Minnesota - Information about the distribution and ecology of native and introduced species of fish in Minnesota.  It has a searchable database, species checklists, distribution maps, and a natural history section with pictures.
• Fisheries and natural resource related sites - This site contains about 11 pages of links.  
• Illinois Natural History Survey Fish Collection - A searchable database, list of endangered species, and distribution maps.
• Native fishes of North America
• North American Native Fishes Association
• TNHC North American Freshwater Fishes Index - Images, distribution maps, and information.  Listed by family and genera.

International Websites

• Australia:  Cooperative Research Centre for Freshwater Ecology - The CRCFC exists to improve the condition of Australia's inland waters.  The web site includes research and teaching on Australian rivers and their floodplains.
• Germany:  The Max Planck Institute for Limnology - MPI-Ploen is one of the world's best facilities for experimental studies of freshwater systems.  Particular strengths include zooplankton ecology, evolutionary ecology, and tropical biology.

Mapping

• Microsoft Terraserver - Online aerial photos from much of the United States.
  

Marine

• Florida Museum of Natural History - Links to photographs of marine species.
• Oceanography Links at the Virtual Library

Miscellaneous Information

• Aquatic Network - Information on fisheries, limnology, and marine biology.  There are many links to different sites relating to these subjects.  There is also a link to the AquaStore where different items can be purchased online.
• Center for Aquatic and Invasive Plants - The world's largest information resource of its kind. We provide a variety of free and for-sale services and products.
• Missouri Watershed Information Network - Provides assistance in locating and accessing information relative to Missouri watersheds.
  

Molluscs

• Unio Gallery - Maintained by Dr. Chris Barnhart, Missouri State University, this site contains excellent photographs of freshwater mussels.

Professional Societies

• American Fisheries Society - The oldest and largest professional society representing fisheries scientists.  Publishes fisheries research journals.

• American Society of Limnology and Oceanography - The scientific organization for research on lakes and oceans.  Includes information on meetings and on-line articles from the journal.
• Ecological Society of America - ESA is a non-partisan, nonprofit organization of scientists founded in 1915 to: stimulate sound ecological research; clarify and communicate the science of ecology; and promote the responsible application of ecological knowledge to public issues.  This web site includes online journals.
• National Association of Marine Laboratories
• North American Benthological Society - NABS is particularly strong in stream ecology and studies of the taxonomy and ecology of aquatic insects.
• North American Lake Management Society - The NALMS forges partnerships among citizens, scientists, and professionals to foster the management and protection of lakes and reservoirs for today and tomorrow.
• Society of Wetland Scientists - Wetlands are transitional zones between aquatic and terrestrial habitats.  This site contains a link to the professional journal, as well as information about meetings and jobs.

Water Quality and Other Databases from Government Agencies

• Federal Wetlands regulations - Includes the following legislation: the Clean Water Act (33 United States Code Part 1344) and the Rivers and Harbors Act (33 United States Code Part 403.)
• US Geological Survey Water Resources of the United States - This page has links to information about water, acid rain, mapping, and local information.   Specific information is also available on streamflows (e.g., for the Missouri River .) 
• United State Army Corps of Engineers - The Army Corps of Engineers is responsible for maintaining waterways and impoundments on major rivers.  For example, there is information on current levels of lakes in the White River drainage.
• United States Environmental Protection Agency - The US EPA is the primary enforcement arm for federal environmental regulations.  Specific information is available for different watersheds (e.g., for Bull Shoals Lake.)

Water Treatment

• The American Water Works Association - Information about policies and legislation involving drinking water quality and supply.  The Missouri chapter of the AWWA is at http://www.awwa-mo.org/

• Water Quality Association - The Water Quality Association represents manufacturers and distributors of household, commercial, industrial and small system water treatment systems. WQA represents 2600 member companies in the U.S. and 30 other countries

Wetlands

• Federal Wetlands regulations

• National Audubon Society - Use the search capability to find information about waterfowl and wetlands.
• Society of Wetlands Scientists
• U.S Fish and Wildlife Service - The National Wetlands Inventory project was established to generate information about the characteristics, extent, and status of the nation's wetlands and deepwater habitats.

Zooplankton

• Cladocera - This site, maintained by the university of Guelph, contains numerous resources of interest to researchers working with the Cladocera.
• The Zooplankton Project - Zooplankton are small animals living in the open waters of ponds, lakes, and oceans.  Most zooplankton eat algae and serve as food for small fish.  In freshwater, the dominant zooplankton groups are rotifers, cladocerans, and copepods.  This site contains numerous photographs of representative genera of cladocerans and copepods from the south-central United States.