| you can hide but you can't run: apparent competition, predator responses and the decline of arctic ground squirrels in boreal forests of the southwest yukon. | throughout much of north america's boreal forest, the cyclical fluctuations of snowshoe hare populations (lepus americanus) may cause other herbivores to become entrained in similar cycles. alternating apparent competition via prey switching followed by positive indirect effects are the mechanisms behind this interaction. our purpose is to document a change in the role of indirect interactions between sympatric populations of hares and arctic ground squirrels (urocitellus parryii plesius), and t ... | 2016 | 27635312 |
| the impact of predation on burrow use by arctic ground squirrels in the boreal forest. | in sedentary animals, the choice of a suitable home site is critical to survival and reproductive fitness. however, habitat suitability may vary with predation risk. we compared habitat use of arctic ground squirrels (spermophilus parryii plesius) living in the boreal forest under conditions of fluctuating predation pressure. in our study area, predators show ten-year cycles in numbers that track that of their primary prey, the snowshoe hare (lepus americanus). in 1993, we compared burrows that ... | 1999 | 10902546 |