Utah Black Bear Multi-Site Capture-Recapture 2004 - 2011
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https://figshare.com/articles/dataset/Utah_Black_Bear_Multi-Site_Capture-Recapture_2004_-_2011/14368823/1
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See Pederson et al. 2012 (https://doi.org/10.2192/URSUS-D-10-00029.1) for specific methods about sampling design, data collection, processing, and genetic analysis. Resulting capture histories and trap locations were formatted for input into the <i>oSCR</i> package in R: We formatted the individually identified black bear capture-recapture data from each site into multi-session (3 - 6 years) capture histories that retained spatial information on individual (i) detections at hair collection corrals (j = 16, 25) across sampling occasions (k = 4) such that y<sub>ijk</sub> ~ Bernoulli(p<sub>ij</sub>). The detection model component defines probability of detection of an individual at a particular trap (p<sub>ij</sub>) as a function of distance from the individual’s activity center (s<sub>i</sub>) to that trap having location x<sub>j</sub>. We used the half-normal model p<sub>ij</sub> = p<sub>0</sub> * exp(-dist(x<sub>j</sub>,s<sub>i</sub>)<sup>2</sup>/2σ<sup>2</sup>) where p<sub>0</sub> is the baseline encounter probability, x is the location of trap j, s is the activity center of individual i, and σ is the spatial scale parameter, sigma, determining the rate of decrease in detection probability in regards to the distance between x<sub>j</sub> and s<sub>i</sub>. We have uploaded a ReadMe document that details each column in the provided trap data frame (tdf) and encounter data frame (edf) .csv files.
提供机构:
figshare
创建时间:
2021-04-03



