Search results
Results from the WOW.Com Content Network
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.
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.
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 ...
This image or recording is the work of a U.S. Fish and Wildlife Service employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. For more information, see the Fish and Wildlife Service copyright policy
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.
The first principle of population dynamics is widely regarded as the exponential law of Malthus, as modelled by the Malthusian growth model.The early period was dominated by demographic studies such as the work of Benjamin Gompertz and Pierre François Verhulst in the early 19th century, who refined and adjusted the Malthusian demographic model.
Managing fisheries is about managing people and businesses, and not about managing fish. Fisheries are managed by regulating the actions of people. [22] If fisheries management is to be successful, then associated human factors, such as the reactions of anglers and harvesters, are of key importance, and need to be understood. [23] [24]
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