Identifying Sources of Error in Surveys of Devils Hole Pupfish (Cyprinodon diabolis)The Southwestern Naturalist
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AbstractWe 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.
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Citation InformationMaria Dzul, Michael C. Quist, Stephen J Dinsmore, Philip M. Dixon, et al.. "Identifying Sources of Error in Surveys of Devils Hole Pupfish (Cyprinodon diabolis)" The Southwestern Naturalist Vol. 57 Iss. 1 (2012) p. 44 - 50
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