Integrating resource selection information with spatial capture-recapture

被引:120
作者
Royle, J. Andrew [1 ]
Chandler, Richard B. [1 ]
Sun, Catherine C. [2 ]
Fuller, Angela K. [3 ]
机构
[1] US Geol Survey, Patuxent Wildlife Res Ctr, Laurel, MD 20708 USA
[2] Cornell Univ, Dept Nat Resources, New York Cooperat Fish & Wildlife Res Unit, Ithaca, NY 14853 USA
[3] Cornell Univ, US Geol Survey, New York Cooperat Fish & Wildlife Res Unit, Dept Nat Resources, Ithaca, NY 14853 USA
来源
METHODS IN ECOLOGY AND EVOLUTION | 2013年 / 4卷 / 06期
关键词
animal movement; animal sampling; encounter probability; hierarchical modeling; marginal likelihood; resource selection; space usage; spatial capture-recapture; DENSITY-ESTIMATION; HABITAT SELECTION; ANIMAL MOVEMENT; BLACK BEARS; DNA DATA; INFERENCE; MODELS; POPULATION;
D O I
10.1111/2041-210X.12039
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Understanding space usage and resource selection is a primary focus of many studies of animal populations. Usually, such studies are based on location data obtained from telemetry, and resource selection functions (RSFs) are used for inference. Another important focus of wildlife research is estimation and modeling population size and density. Recently developed spatial capture-recapture (SCR) models accomplish this objective using individual encounter history data with auxiliary spatial information on location of capture. SCR models include encounter probability functions that are intuitively related to RSFs, but to date, no one has extended SCR models to allow for explicit inference about space usage and resource selection. In this paper we develop the first statistical framework for jointly modeling space usage, resource selection, and population density by integrating SCR data, such as from camera traps, mist-nets, or conventional catch traps, with resource selection data from telemetered individuals. We provide a framework for estimation based on marginal likelihood, wherein we estimate simultaneously the parameters of the SCR and RSF models. Our method leads to increases in precision for estimating parameters of ordinary SCR models. Importantly, we also find that SCR models alone can estimate parameters of RSFs and, as such, SCR methods can be used as the sole source for studying space-usage; however, precision will be higher when telemetry data are available. Finally, we find that SCR models using standard symmetric and stationary encounter probability models may not fully explain variation in encounter probability due to space usage, and therefore produce biased estimates of density when animal space usage is related to resource selection. Consequently, it is important that space usage be taken into consideration, if possible, in studies focused on estimating density using capture-recapture methods.
引用
收藏
页码:520 / 530
页数:11
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