Estimation of demographic parameters is central to research questions in wildlife management, conservation, and evolutionary ecology. I review the 7 major classes of mark–recapture models that investigators can use to estimate apparent survival and other parameters from live-encounter data. Return rates are the product of 4 probabilities: true survival (S), site fidelity (F), site propensity (d...

The Chiapas killifish Tlaloc hildebrandi is an Endangered and endemic fish that inhabits wetlands, mountain streams, rivers in Chiapas, Mexico. This species considered vulnerable due to accelerated human population growth its distribution range the species’ low genetic diversity. To evaluate conservation status of species, we assessed habitat quality estimated size remnant populations Amarillo ...

This article introduces Rcapture, an R package for capture-recapture experiments. The data for analysis consists of the frequencies of the observable capture histories over the t capture occasions of the experiment. A capture history is a vector of zeros and ones where one stands for a capture and zero for a miss. Rcapture can fit three types of models. With a closed population model, the goal ...

The brown-headed nuthatch (Sitta pusilla) was likely extirpated from Missouri in the early 1900s as a result of habitat loss through extensive logging. Conservation partners including Department Conservation, United States Forest Service, University Missouri, and others, relocated 102 nuthatches Ouachita National Arkansas to Mark Twain 2020 2021 establish local population. We tracked 50 individ...