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- Title
IDENTIFYING SOURCES OF ERROR IN SURVEYS OF DEVILS HOLE PUPFISH (CYPRINODON DIABOLIS).
- Authors
DZUL, MARIA C.; QUIST, MICHAEL C.; DINSMORE, STEPHEN J.; DIXON, PHILIP M.; BOWER, MICHAEL R.; WILSON, KEVIN P.; GAINES, D. BAILEY
- Abstract
We assessed four potential sources of error in estimating size of the population of Devils Hole pupfish (Cyprinodon diabolis): net, time of day, diver, and order of diver. Experimental dives (3/day) were conducted during 4 days in July 2009. Effects of the four sources of error on estimates from dive surveys were analyzed using a split-split plot ANOVA. Diver and order of diver had no significant influence on estimates, whereas the effect of presence or absence of a net was significant. Effects of time of day and presence or absence of a net showed a significant interaction with depth of water. Results indicated that pupfish may move upward during the dive, and as a result, the standard methods of dive surveys may underestimate abundance.
- Subjects
DEVILS Hole pupfish; FISH populations; FISH surveys; FISH conservation; ANALYSIS of variance
- Publication
Southwestern Naturalist, 2012, Vol 57, Issue 1, p44
- ISSN
0038-4909
- Publication type
Article
- DOI
10.1894/0038-4909-57.1.44