A technique for estimating the accuracy of fish locations identified by radiotelemetry
Journal of Freshwater Ecology
- By:
- D.G. Simpkins and W.A. Hubert
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Abstract
Radiotelemetry is a useful tool to describe habitat use by fish, but studies may inaccurately describe microhabitat use due to failure to account for errors when identifying fish locations. We developed a technique that identifies the extent of location errors of a hand-held radiotelemetry system. The ranges of location errors were determined among different observers, between land and water, and at an array of distances (5 - 125 m) between transmitters and receivers. No significant differences occurred among three observers at distances of 100 m or less or between transmitters on land or in water. Location error increased significantly with distance between transmitter and receiver; mean error was 0.5 m at 5 m and 4.5 m at 100 m. The 95th percentile of location errors was 1.5 m at 5 m and 10.5 m at 100 m. The number of trials needed to define location errors within 20% of the true mean (P ??? 0.05) was 109 at 5 m and 46 at 100 m. Determination of location error with radiotelemetry equipment can be conducted by two people on land with a relatively small amount of effort when the results are to be applied to relatively shallow waters.Additional publication details
- Publication type:
- Article
- Publication Subtype:
- Journal Article
- Title:
- A technique for estimating the accuracy of fish locations identified by radiotelemetry
- Series title:
- Journal of Freshwater Ecology
- Volume:
- 13
- Issue:
- 3
- Year Published:
- 1998
- Language:
- English
- Larger Work Type:
- Article
- Larger Work Subtype:
- Journal Article
- Larger Work Title:
- Journal of Freshwater Ecology
- First page:
- 263
- Last page:
- 268