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In fisheries and conservation biology, the catch per unit effort (CPUE) is an indirect measure of the abundance of a target species. Changes in the catch per unit effort are inferred to signify changes to the target species' true abundance.
Also in the assessment, geographical boundaries of different stocks or populations are defined. From the combined biological and fisheries data, the current status and condition of the stock is defined and managers use this assessment to predict how in the future, stocks will respond to varying levels of fishing pressure.
The National Survey of Fishing, Hunting, and Wildlife-Associated Recreation (Survey) is a comprehensive and long-standing survey sponsored by the U.S. Fish and Wildlife Service [1] since 1955. It is among the oldest and most detailed ongoing recreational surveys in the United States.
The Georgia Department of Natural Resources (DNR) is an administrative agency of the U.S. state of Georgia. The agency has statewide responsibilities for managing and conserving Georgia’s natural, cultural, and historical resources, and has five divisions: Coastal Resources Division; Environmental Protection Division; Law Enforcement Division
The method involves systematic or random flight lines over the target area at a constant height above ground, with at least one observer recording wildlife in a calibrated strip on at least one side of the aircraft. [1] The method has been often criticised for low accuracy and precision, but is considered to be the best option for relatively ...
Electrofishing is a common scientific survey method used to sample fish populations to determine abundance, density and species composition. When performed correctly, electrofishing results in no permanent harm to the fish, which return to their natural mobility state in as little as two minutes after being caught.
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Gap analysis is a tool used in wildlife conservation to identify gaps in conservation lands (e.g., protected areas and nature reserves) or other wildlands where significant plant and animal species and their habitat or important ecological features occur.