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Publisher: USGS | Science Center: Upper Midwest Environmental Sciences Center (UMESC, LaCrosse) | Format: URL
www.umesc.usgs.gov — Zebra mussels have caused drastic declines in native clam and mussel populations in some locations. Zebra mussels compete with other invertebrates and young fish for plankton, the primary food source for these groups. UMESC scientists are investigating the effects zebra mussels are having on the riverine ecosystem. This study examines the effects More...
Publisher: USGS | Science Center: Great Lakes Science Center (GLSC, Ann Arbor) | Format: .PDF
www.glsc.usgs.gov — This report is a result of an annual bottom trawl survey conducted on Lake Huron since 1973, which is used to examine relative abundance, size and age structure, and species composition of the prey fish community. The survey reveals that juvenile rainbow smelt abundance in 2006 is slightly higher than the long-term mean for the time series since More...
Publisher: USGS | Science Center: Upper Midwest Environmental Sciences Center (UMESC, LaCrosse) | Format: URL
www.umesc.usgs.gov — Populations of amphibians have been declining around the world (Stokstad 2004). This website provides links to resources that deal with amphibian declines mainly in the 13-state Upper Mississippi ARMI region, species, current research, research methods, research team profiles, a list of partners, products, frog and toad calls, other links related More...
U.S. Department of the Interior |
U.S. Geological Survey