4.7 Article

Estimating statewide carrying capacity of bobcats (Lynx rufus) using improved maximum clique algorithms

期刊

LANDSCAPE ECOLOGY
卷 37, 期 9, 页码 2383-2397

出版社

SPRINGER
DOI: 10.1007/s10980-022-01460-6

关键词

Ensembles of small models; Habitat suitability; Home range capacity; Landscape carrying capacity; Maximum clique analysis; N-k

资金

  1. Indiana Department of Natural Resources' State Wildlife grant T3S series and Wildlife Restoration Grant [W45R3]
  2. USDA National Institute of Food and Agriculture McIntire Stennis Project [1010322]
  3. Purdue University Department of Forestry and Natural Resources

向作者/读者索取更多资源

This study extended the use of Maximum clique analysis (MCA) to assess landscape carrying capacity for a population of female bobcats. The researchers incorporated uncertainty into their estimates and compared different algorithms for large-scale areas. The results showed that MCA can be an effective method for assessing wildlife population and landscape capacity while accounting for uncertainty.
Context Maximum clique analysis (MCA) can approximate landscape carrying capacity (N-k) for populations of territorial wildlife. However, MCA has not been widely adopted for wildlife applications, mainly due to computational constraints and software wildlife biologists may find difficult to use. Moreover, MCA does not incorporate uncertainty into estimates of N-k. Objectives We extended MCA by applying a vertex cover algorithm to compute N-k over a large (92,789 km(2)), continuous spatial scale for female bobcats (Lynx rufus) in Indiana, USA. We incorporated uncertainty by calculating confidence intervals for N-k across five thresholds of habitat suitability using 10 replicate suitability maps from bootstrapped datasets. For portions of the landscape too large to be solved with the vertex cover algorithm, we compared predictions from a linear model and a greedy algorithm. Results Mean estimates of N-k for female bobcats in Indiana across habitat suitability thresholds ranged from 539 (0.75 threshold) to 1200 territories (0.25 threshold). On average, each 12.5 percentile reduction in the suitability threshold increased estimates for N-k by 1.2-fold. Both the predictive and greedy algorithm produced reasonable estimates of maximum cliques for areas that were too large to compute with the vertex cover algorithm. The greedy algorithm produced smaller confidence intervals compared to the predictive approach but underestimated maximum cliques by 1.2%. Conclusions Our research demonstrates effective application of MCA to species occupying large landscapes while accounting for uncertainty. We believe our methods, coupled with availability of annotated scripts developed in R, will make MCA more broadly accessible to wildlife biologists.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据