An Evaluation of Several Types of Gear for Sampling Fish Populations, 1974

(1974) An Evaluation of Several Types of Gear for Sampling Fish Populations, 1974. Natural Resources, Department of

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Abstract

Sampling fish populations with seines, fyke nets and gill nets to determine changes or trends in apparent abundance is a basic tool in fisheries management and research. Reliable estimates of abundance are difficult to obtain primarily because of the lack of standardized sampling techniques and gear , and from a general dearth of knowledge about the sources of variation in catch other than changes in population abundance. Standardization of techniques and gear within a sampling regime is necessary to achieve precise estimates of r elative abundance and other population parameters. Recognition and delineation of inherent sources of variation in catch per unit effort are also prerequisites for obtaining precise indices.

Item Type:	Departmental Report
Keywords:	Iowa Conservation Commission, fishing samples, fish population, Fisheries Section
Subjects:	Natural resources and environment Natural resources and environment > Ecology Natural resources and environment > Water resources
ID Code:	48535
Deposited By:	Margaret Barr
Deposited On:	09 Apr 2024 19:11
Last Modified:	09 Apr 2024 19:11
URI:	https://pubdev.silo.lib.ia.us/id/eprint/48535