Arid
DOI10.1093/jmammal/gyx142
A novel approach to estimating density of American badgers (Taxidea taxus) using automatic cameras at water sources in the Chihuahuan Desert
Gould, Matthew J.1; Harrison, Robert L.2
通讯作者Harrison, Robert L.
来源期刊JOURNAL OF MAMMALOGY
ISSN0022-2372
EISSN1545-1542
出版年2018
卷号99期号:1页码:233-241
英文摘要

American badgers (Taxidea taxus) are large members of the weasel family Mustelidae. Badgers are important predators and creators of burrows in ecosystems in which they occur, but they are not well studied. Their range occurs over most of North America; however, most studies of badgers have occurred in California and the northern portions of their range, while few have occurred in southern habitats. Badger density has been estimated in Utah, Idaho, Wyoming, and British Columbia with no estimates from desert habitats. To measure badger density in a desert habitat, we placed automatic cameras at anthropogenic water sources (drinkers) in the Chihuahuan Desert, identified individual badgers by their dorsal head stripes, and estimated density using spatially explicit capture-recapture analysis. We modeled the detection process for individuals as a function of time, survey region, a learned and trap-specific behavioral response, and a finite mixture model. We then hypothesized that soil composition, soil depth, and land cover influence variation in badger density. From 1,282 camera-nights, we recorded 301 badger visits (23.5 visits per 100 camera-nights) and identified 30 individuals 170 times. The top model included a trap-specific behavioral effect for lambda 0, a finite mixture model for the sigma parameter, which controls the spatial scale over which the expected number of detections declines, and indicated that soil depth was an important covariate explaining variation in badger density. Estimated badger density was 0.10 badgers/km(2) (95% CI = 0.03-0.31), which is considerably less than the reported density estimates for nonendangered nondesert populations. Our method helps provide researchers with an ability to estimate density for American badgers in arid ecosystems. With modification, our method may be used across the geographic range of badgers, facilitating better understanding of an understudied species.


英文关键词American badger anthropogenic water source camera trap Chihuahuan Desert density dorsal head stripe SECR spatially explicit capture-recapture Taxidea taxus
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000424149000021
WOS关键词CAPTURE-RECAPTURE DATA ; POPULATION ; SIMULATION ; FEATURES ; FIRE
WOS类目Zoology
WOS研究方向Zoology
来源机构New Mexico State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/211129
作者单位1.New Mexico State Univ, Dept Biol, POB 30001,MSC 3AF, Las Cruces, NM 88003 USA;
2.Univ New Mexico, Dept Biol, MSC 03 2020, Albuquerque, NM 87131 USA
推荐引用方式
GB/T 7714
Gould, Matthew J.,Harrison, Robert L.. A novel approach to estimating density of American badgers (Taxidea taxus) using automatic cameras at water sources in the Chihuahuan Desert[J]. New Mexico State University,2018,99(1):233-241.
APA Gould, Matthew J.,&Harrison, Robert L..(2018).A novel approach to estimating density of American badgers (Taxidea taxus) using automatic cameras at water sources in the Chihuahuan Desert.JOURNAL OF MAMMALOGY,99(1),233-241.
MLA Gould, Matthew J.,et al."A novel approach to estimating density of American badgers (Taxidea taxus) using automatic cameras at water sources in the Chihuahuan Desert".JOURNAL OF MAMMALOGY 99.1(2018):233-241.
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