Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Brian D. Jansen"'
Autor:
Brian D Jansen, Jonathan A Jenks
Publikováno v:
PLoS ONE, Vol 7, Iss 9, p e44625 (2012)
We investigated potential advantages in birth timing for mountain lion (Puma concolor) cubs. We examined cub body mass, survival, and age of natal dispersal in relation to specific timing of birth. We also investigated the role of maternal age relati
Externí odkaz:
https://doaj.org/article/c4965c35d6ca4b159e65150974ed50dc
Publikováno v:
Wildlife Biology. 19:210-216
We compared injuries resulting from two different capture methods, i.e. trailing hounds and foot snares, for pumas Puma concolor in a mixed landscape with open grasslands and limited ‘retreat’ habitat in southern Chilean Patagonia. Injury scores
Publikováno v:
The Southwestern Naturalist. 54:430-438
Understanding how mining operations influence use of habitat and movements by bighorn sheep (Ovis canadensis) is critical to long-term management of populations that inhabit areas in and around mining operations. We studied responses of a population
Publikováno v:
Ethology. 114:999-1005
To obtain accurate estimates of activity budget parameters, samples must be unbiased and precise. Many researchers have considered how biased data may affect their ability to draw conclusions and examined ways to decrease bias in sampling efforts, bu
Publikováno v:
Wildlife Monographs. 171:1-32
In arid regions of the southwestern United States, water is often considered a primary factor limiting distribution and productivity of desert ungulates, including desert bighorn sheep (Ovis canadensis mexicana). Thus, wildlife management agencies an
Publikováno v:
Journal of Arid Environments. 72:1518-1525
Ungulates in arid climates use a variety of mechanisms to cope with environmental conditions that can result in heat stress and dehydration. Use of shade during midday is common among desert ungulates of the southwestern United States. Desert bighorn
Publikováno v:
The Southwestern Naturalist. 52:418-423
Mining has been cited as detrimental to bighorn sheep (Ovis canadensis), but little research exists that has demonstrated those effects. We compared behavior of bighorn sheep while individuals were inside and outside of an active copper mine to deter
Publikováno v:
Journal of Wildlife Management. 71:571-575
Introduced disease is a major mortality factor in some populations of bighorn sheep (Ovis canadensis). Epizootics of infectious keratoconjunctivitis (IKC) and contagious ecthyma occurred in bighorn sheep in the Silver Bell Mountains of south-central
Publikováno v:
Wildlife Society Bulletin. 34:1121-1126
Bighorn sheep (Ovis canadensis) and Dall's sheep (O. dalli) use mining areas despite high human activity. We studied bighorn sheep selection of landscape features within a mine in a desert environment to determine those important for bighorn sheep an
Publikováno v:
Journal of Wildlife Diseases. 42:407-411
An infectious keratoconjunctivitis (IKC) epizootic in bighorn sheep (Ovis canadensis) occurred in the Silver Bell Mountains, Arizona, USA, from 1 December 2003 to 31 March 2004. We used standard culture methods and polymerase chain reaction (PCR) amp