Cost-effectiveness of two monitoring strategies for the great crested newt (Triturus cristatus)

摘要: Designing cost-effective monitoring protocols is a fundamental prerequisite for amphibian conservation. Here, we report comparison of flashlight survey and trapping (with without light sticks as trap baits) in order to determine detectability great crested newts (Triturus cristatus). Twelve ponds were surveyed Switzerland where T. cristatus had been known occur. We measured covariates affecting both detectability. Newt using 20 min long surveys was on average ± SE = 39% 10%). Flashlight mostly influenced by surface submerged vegetation density, well water temperature. during one night six funnel traps per pond average±SE 41%±10%. Trap mainly affected position the pond, with lying floor being more likely attract newts. The use did not enhance Estimates used define how many times sites have be visited 95% certain missing they are present. In cases multiple visits (7 or 6 sessions) performed. most easily applied method large scale programs.