Download or read book Plasticity in Selection Strategies of Woodland Caribou Rangifer Tarandus Caribou During Winter and Calving written by David D. Gustine and published by . This book was released on 2005 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calving Strategies of Woodland Caribou Rangifer Tarandus Caribou in a Multi predator Ecosystem in Northeastern British Columbia written by David D. Gustine and published by . This book was released on 2004 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Zoology written by and published by . This book was released on 2008-05 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calf Survival of Woodland Caribou in a Multi predator Ecosystem written by David D. Gustine and published by . This book was released on 2006 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The proximate role of predation in limiting caribou (Rangifer tarandus) populations is well documented, but the long-term effects of predation pressure on selection of calving areas and the subsequent impacts to calving success remain unclear. We examined the relationships among calf survival, predation risk, and vegetation characteristics among 3 calving areas and across spatial scales in the Besa-Prophet River drainage of northern British Columbia"--page 1.
Download or read book Calving Ground Habitat Selection of Boreal Woodland Caribou Rangifer Tarandus Caribou in the Owl Flintstone Range written by Daniel L. J. Dupont and published by . This book was released on 2014 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boreal woodland caribou -- calving -- islands -- bog -- black spruce -- lichen.
Download or read book Calving Behavior of Boreal Caribou in a Multi predator Multi use Landscape written by Craig Allen DeMars and published by . This book was released on 2015 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: The boreal ecotype of woodland caribou (Rangifer tarandus caribou) is federally listed as Threatened due to population declines throughout its distribution. High mortality rates of neonate calves (≤ 4 weeks old) due to predation are a key demographic factor contributing to population declines and increasing predation has been linked to landscape disturbance within and adjacent to caribou range. To inform management strategies for improving rates of calf survival, I investigated the space use and habitat requirements of female boreal caribou during calving. Space is integral to the calving behaviour of boreal caribou with parturient females dispersing widely on the landscape, a behaviour hypothesized to reduce predation risk. I assessed potential evolutionary drivers of dispersion using simulation analyses that tracked caribou-wolf encounters during the calving season. I specifically assessed whether dispersion decreased predation risk by: (i) increasing predator search time, (ii) reducing predator encounters because individuals are inconspicuous relative to groups, or (iii) eliminating the risk of multiple kills per predator encounter of caribou groups. Simulation outputs show that dispersion only becomes favourable when differential detectability based on group size is combined with the risk of multiple kills per encounter. This latter effect, however, is likely the primary mechanism driving parturient females to disperse because group detectability effects are presumably constant year round. Simulation outputs further demonstrate that if females become increasingly clumped - a pattern that may result if caribou avoid disturbance in highly impacted landscapes - then calf survival is negatively affected. To specifically identify key attributes of calving habitat, I used a three-step process. First, I identified GPS locations where females were accompanied by neonate calves by developing two novel methods for predicting parturition events and neonate survival status based on female movement patterns. These methods predicted parturition with near certainty and provided reasonable estimates of neonate survival, which I further augmented with aerial survey data. Using the partitioned GPS location data, I then developed resource selection functions using a generalized mixed effects modelling approach that explicitly maintained the individual as the sampling and comparative unit. I discriminated calving areas from other areas within caribou range by conducting multiple comparisons based on season and maternal status. These comparisons show that parturient females shifted from bog-dominated winter ranges to calving areas dominated by fens. In general, reducing predation risk was a dominant factor driving calving habitat selection although the shift to fen landscapes indicates that females may be trading off increased predation risk to access higher quality forage because fens are riskier than bogs. As a third step, I explicitly evaluated calving habitat quality by relating maternal selection and use of resources to the probability of neonate survival. These analyses included spatially explicit covariates of predator-specific risk. Surprisingly, variation in landscape disturbance had minimal effect on calf survival; rather, survival was best explained by predation risk from black bears (Ursus americanus). Collectively, my findings yield important insights into the habitat requirements of boreal caribou during calving and highlight that management actions aimed at improving calving habitat quality will need to be conducted at large spatial scales.
Download or read book Landscape Composition and Configuration Influences Woodland Caribou Calf Recruitment written by Sara C. McCarthy and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mating Strategies of Woodland Caribou Rangifer Tarandus Caribou microform written by Heather Elizabeth Butler and published by National Library of Canada. This book was released on 1986 with total page 1166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mating behaviour of woodland caribou (Rangifer tarandus caribou) was studied in populations from contrasting environments (located in Brunette Island, Newfoundland; Spatsizi Wilderness Park, B.C.; and the Slate Islands, Ont.) that were expected to influence reproductive tactics. The major objectives of this study were to examine the functional aspects of rutting behaviour of males and to examine the relationship between the environment and the mating behavior of males and females.
Download or read book Management Strategies for Woodland Caribou Rangifer Tarandus Caribou in BC written by Rhona Marie Gillespie and published by . This book was released on 2000 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery Strategy for Forest dwelling Woodland Caribou Rangifer Tarandus Caribou in Ontario written by Ontario. Ministry of Natural Resources. Species at Risk Unit. Ontario Woodland Caribou Recovery Team and published by . This book was released on 2005 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery Strategy for Three Woodland Caribou Herds Rangifer Tarandus Caribou Boreal Population in Labrador written by Isabelle Schmelzer and published by . This book was released on 2004 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing Cumulative Human Impacts on Northern Woodland Caribou with Traditional Ecological Knowledge and Resource Selection Functions written by Jean Lieppert Polfus and published by . This book was released on 2010 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: Woodland caribou (Rangifer tarandus caribou) are federally listed and declining across Canada because of the cumulative impacts of human infrastructure development. The Atlin northern mountain herd, in the territory of the Taku River Tlingit First Nation (TRTFN), British Columbia, is less affected by development than southern herds. However, recent low productivity in this herd suggests that the impacts of development (i.e., roads, mines, cabins and towns) may be accumulating. To predict the cumulative impact of human development on the Atlin herd, we developed seasonal resource selection functions (RSF) at 2 spatial scales with data from 10 global positioning system collared caribou. We modeled habitat selection and assessed cumulative effects by estimating the zone of influence (ZOI) around several types of human development. At the landscape and home range scale caribou avoided the ZOI and selected pine-lichen forests in winter and alpine habitats in summer. Approximately 8 and 2% of high quality habitat was lost due to avoidance of current development at the landscape scale in winter and summer, respectively. Future development of access roads to 2 mines would cause a further loss of 1% of high quality habitat. Negotiating the complex political dynamics that surround caribou conservation often requires new approaches to management and recovery planning. The incorporation of traditional ecological knowledge (TEK) with Western science could improve efficiency of management decisions and enhance the validity and robustness of ecological inferences. Therefore, we evaluated how well RSF and TEK habitat models predicted current woodland caribou observations and compared the spatial predictions of both modeling approaches. Habitat suitability index models were generated from TEK interviews with TRTFN members. Though comparison of habitat ranks between the 2 models showed spatial discrepancies in some cases, overall, both approaches had high model performance and successfully predicted caribou occurrence. Our results suggest TEK can be used to identify caribou habitat and is a useful approach in northern ecosystems that frequently lack long-term ecological data that are needed to inform management decisions. Combining TEK-based habitat suitability index models with cumulative effects assessments will facilitate recovery goals for woodland caribou across northern Canada.
Download or read book An Evaluation of Woodland Caribou Rangifer Tarandus Caribou Calving Habitat in the Wabowden Area Manitoba written by Tamaki Hirai and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Woodland Caribou Rangifer Tarandus Caribou Conservation Strategy for Manitoba written by and published by . This book was released on 2000 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery Strategy for the Woodland Caribou Southern Mountain Population Rangifer Tarandus Caribou in Canada written by and published by . This book was released on 2014 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery Strategy for the Woodland Caribou Rangifer Tarandus Caribou Boreal Population in Canada written by and published by . This book was released on 2006 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
