Habitat associations in a recolonizing, low‐density black bear population

作者: Rahel Sollmann , Beth Gardner , Jerrold L. Belant , Clay M. Wilton , Jeff Beringer

DOI: 10.1002/ECS2.1406

关键词:

摘要: American black bears are closely associated with forest habitat. They were nearly extirpated from the Central Interior Highlands, United States, in early twentieth century, but have recolonized this part of range since 1960s. Due to lower population densities (as a result recent recolonization), we hypothesized that region would show strong associations habitat at both home and landscape scale. To test this, analyzed hair snare GPS telemetry data five sampling grids combined spatial capture–recapture resource selection function model investigate individual space use within ranges scale variation density southern Missouri Highlands. We performed linear discriminant analysis identify correlates bear density. found level, selected for more forested steeper slopes. Black varied among 0.842 10.248 individuals/100 km2 which is low end spectrum reported densities. There no clear among-grid density, three higher-density grids, declined increasing cover distance human settlements. This suggests populations benefited heterogeneous rural settlements may represent food resources. Exploiting these anthropogenic resources could be facilitated by fact our study not hunted viewed as novelty rather than nuisance, lead perceived risk sources. Our results highlight need interpret only local scales also context.

参考文章(60)
W. N. Venables, B. D. Ripley, Modern Applied Statistics with S Springer. ,(2010) , 10.1007/978-0-387-21706-2
J.A. Parkhurst, T.K. Fuller, R. Field, S.A. Jonker, Black bear depredation on agricultural commodities in Massachusetts Wildlife Society Bulletin. ,vol. 26, pp. 318- 324 ,(1998)
Martyn L. Gorman, Michael G. Mills, Jacobus P. Raath, John R. Speakman, High hunting costs make African wild dogs vulnerable to kleptoparasitism by hyaenas Nature. ,vol. 391, pp. 479- 481 ,(1998) , 10.1038/35131
Adrian Baddeley, Rolf Turner, spatstat: An R Package for Analyzing Spatial Point Patterns Journal of Statistical Software. ,vol. 12, pp. 1- 42 ,(2005) , 10.18637/JSS.V012.I06
Stephen Dewitt Fretwell, Henry L. Lucas, On territorial behavior and other factors influencing habitat distribution in birds Acta Biotheoretica. ,vol. 19, pp. 37- 44 ,(1969) , 10.1007/BF01601953
Brian K. Scheick, Walter McCown, Geographic distribution of American black bears in North America Ursus. ,vol. 25, pp. 24- 33 ,(2014) , 10.2192/URSUS-D-12-00020.1
Jerod A. Merkle, Hugh S. Robinson, Paul R. Krausman, Paul Alaback, Food availability and foraging near human developments by black bears Journal of Mammalogy. ,vol. 94, pp. 378- 385 ,(2013) , 10.1644/12-MAMM-A-002.1
J. Andrew Royle, Richard B. Chandler, Catherine C. Sun, Angela K. Fuller, Integrating resource selection information with spatial capture-recapture Methods in Ecology and Evolution. ,vol. 4, pp. 520- 530 ,(2013) , 10.1111/2041-210X.12039
Andrea L Lyons, William L Gaines, Christopher Servheen, Black bear resource selection in the northeast Cascades, Washington Biological Conservation. ,vol. 113, pp. 55- 62 ,(2003) , 10.1016/S0006-3207(02)00349-X
M. A. Ditmer, D. L. Garshelis, K. V. Noyce, T. G. Laske, P. A. Iaizzo, T. E. Burk, J. D. Forester, J. R. Fieberg, Behavioral and physiological responses of American black bears to landscape features within an agricultural region Ecosphere. ,vol. 6, pp. 1- 21 ,(2015) , 10.1890/ES14-00199.1