United States Department of Agriculture: Agricultural Research Service, Lincoln, Nebraska
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
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Document Type
Article
Date of this Version
6-12-2006
Citation
North American Journal of Aquaculture (2006) 68: 253-255
doi: 10.1577/A05-085.1
Abstract
Continuous measurement of dissolved oxygen concentration and temperature at two depths in the water column were needed for a 2004 field study conducted during actual harvests of channel catfish Ictalurus punctatus and for a small-scale research study conducted in 2005. In the on-farm field study, we collected data in grading nets loaded with high densities of channel catfish. The small-scale study was conducted in 0.1-acre channel catfish research ponds. Commercially available dissolved oxygen and temperature monitoring units did not meet study requirements, so we developed a free-floating data collection unit composed of state-of-the-art sensors, a data logger, and readily available materials. The data collection units proved to be durable under conditions existing in both loaded grading nets and in small research ponds.
Comments
United States government work