The assumption of equal catchability of marked and unmarked animals in mark-recapture sampling is examined. Violation of this assumption may come from two basic sources, heterogeneity or contagion, ...

1. Mark-recapture methods are frequently used to estimate survival rates, which inform wildlife management policies. Mark-recapture models assume zero mortality of marked animals during the period of ...

An innovative new method of estimating the density of snake populations without employing the capture-mark-recapture technique has been created by a biologist. How can researchers determine the number ...

(CN) – A new technique for estimating the populations of endangered and threatened species – involving the birdwatching public – could make conservation efforts more effective. The technique updates ...