What Can the Little Fish in the Shallows Say About Our Lakes скачать в хорошем качестве

What Can the Little Fish in the Shallows Say About Our Lakes

Lakes management typically focuses on controlling phosphorus, stopping the spread of invasive species, managing aquatic vegetation, and producing sportfish for anglers. One aspect of Limnology that lake managers often overlook is the near-shore fish assemblage. Nongame fish that hug our shorelines, such as little darters and minnows, are rarely inventoried or considered in lake management plans, yet the assemblage of small fish functions as an important link in lake food chains. Lake Ripley, in Jefferson County, is one of the few lakes in Wisconsin where periodic surveys of nearshore nongame fish have been conducted. The Lake Ripley findings demonstrated significant fish species declines and extirpations as shoreline habitats changed. The near-shore fish population data helped the Lake Ripley Management District fine tune protection and restoration goals. Restoration can include improving nearshore habitat combined with reintroducing extirpated nongame fish. The latter option can be accomplished with conservation aquaculture methodologies. Presenters: Dave Marshall, Underwater Habitat Investigations, LLC and Lianna Spencer, Lake Ripley Management District