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he U.S. Geological Survey (USGS) Iowa Cooperative Fish and Wildlife Research Unit (Unit) is leading research on Topeka shiner, a species listed in 1998 under the Endangered Species Act (ESA) due to loss of critical habitat and subsequent population declines. The focus of this research is on population size and geographic distribution, and Topeka shiner food and habitat requirements.
he U.S. Geological Survey (USGS) Iowa Cooperative Fish and Wildlife Research Unit (Unit) is leading research on Topeka shiner, a species listed in 1998 under the Endangered Species Act (ESA) due to loss of critical habitat and subsequent population declines. The focus of this research is on population size and geographic distribution, and Topeka shiner food and habitat requirements.