Trappability estimates for mark–recapture data

摘要: Mark–recapture methods produce more accurate estimates when a high fraction of the population is trapped. Three trappability are used in literature, and we compare them for four species Microtus livetrapped Longworth traps. The trappable defined by weight at first capture varies greatly different species. Jolly best estimate on average 4% above minimum 8% below maximum trappability. Trappability seasonally, lowest summer, may be reduced densities. Females are, average, 2% than males. same fenced unfenced populations highly consistent Comparisons between studies or trapping techniques should utilize measure recognize that it will usually have positive bias if probabilities heterogeneous. Minimum trappab...