Rangifer最新文献

{"title":"Population survey of Peary caribou (Rangifer tarandus pearyi) and muskoxen (Ovibos moschatus) on Banks Island, Northwest Territories, July 2010","authors":"Tracy Davison, Jodie D. Pongracz, Judy A. Williams","doi":"10.7557/2.33.2.2539","DOIUrl":"https://doi.org/10.7557/2.33.2.2539","url":null,"abstract":"We conducted a systematic aerial transect survey of Peary caribou (Rangifer tarandus pearyi) and muskoxen (Ovibus moschatus) on Banks Island, Northwest Territories, in July 2010. The population estimate of adult Peary caribou was 1097 ± 343 (95% Confidence Interval: CI), which is not significantly different from the 2005 estimate of 929 ± 289 (95% CI; P < 0.05). The current number, however, is a 4- to 9-fold decrease since the 1980s. The adult muskoxen population estimate was 36 676 ± 4031 (95% CI), which is significantly lower than the 2005 estimate of 47 209 ± 3997 (95% CI; P < 0.05).","PeriodicalId":30034,"journal":{"name":"Rangifer","volume":"1 1","pages":"135-140"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71331004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Observation of Arctic island barren-ground caribou (Rangifer tarandus groenlandicus) migratory movement delay due to human induced sea-ice breaking.","authors":"M. Dumond, S. Sather, R. Harmer","doi":"10.7557/2.33.2.2533","DOIUrl":"https://doi.org/10.7557/2.33.2.2533","url":null,"abstract":"The seasonal migration of the Dolphin and Union caribou (Rangifer tarandus groenlandicus) herd between Victoria Island and the mainland (Nunavut/Northwest Territories, Canada) relies on the formation of sea-ice that connects the Island to the mainland from late-October to early-June.  During an aerial survey of the Dolphin and Union caribou herd in October 2007 on southern Victoria Island, Nunavut, Canada, we documented the short-term effects of the artificial maintenance of an open water channel in the sea-ice on caribou migratory movements during staging along the coast.","PeriodicalId":30034,"journal":{"name":"Rangifer","volume":"33 1","pages":"115-122"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71330738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Standardized monitoring of Rangifer health during International Polar Year","authors":"S. Kutz, J. Ducrocq, C. Cuyler, B. Elkin, A. Gunn, Leonid Kolpashikov, D. Russell, R. White","doi":"10.7557/2.33.2.2532","DOIUrl":"https://doi.org/10.7557/2.33.2.2532","url":null,"abstract":"Monitoring of individual animal health indices in wildlife populations can be a powerful tool for evaluation of population health, detecting changes, and informing management decisions. Standardized monitoring allows robust comparisons within and across populations, and over time and vast geographic regions. As an International Polar Year Initiative, the CircumArctic Rangifer Monitoring and Assessment network established field protocols for standardized monitoring of caribou and reindeer (Rangifer tarandus) health, which included body condition, contaminants, and pathogen exposure and abundance. To facilitate use of the protocols, training sessions were held, additional resources were developed, and language was translated where needed. From March 2007 to September 2010, at least 1206 animals from 16 circumpolar herds were sampled in the field using the protocols. Four main levels of sampling were done and ranged from basic to comprehensive sampling. Possible sources of sampling error were noted by network members early in the process and protocols were modified or supplemented with additional visual resources to improve clarity when needed. This is the first time that such broad and comprehensive circumpolar sampling of migratory caribou and wild reindeer, using standardized protocols covering both body condition and parasite disease status, has been done.","PeriodicalId":30034,"journal":{"name":"Rangifer","volume":"33 1","pages":"91-114"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71330730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A road in the middle of one of the last wild reindeer migration routes in Norway: crossing behaviour and threats to conservation","authors":"M. Panzacchi, B. Moorter, O. Strand","doi":"10.7557/2.33.2.2521","DOIUrl":"https://doi.org/10.7557/2.33.2.2521","url":null,"abstract":"The development of roads and associated infrastructure has interrupted several traditional migrations of wild reindeer (Rangifer tarandus tarandus) in Norway. The population in the Setesdal Austhei wild reindeer area still migrates from winter to calving grounds by semi-annually crossing a cabin-lined road through a narrow corridor, in which further anthropogenic development is planned. To understand if and how infrastructure affected reindeer migration patterns we studied the movements of 10 female reindeer equipped with GPS collars between 2002 and 2010. First, we identified the start and end of the migration period, and then we compared trajectory parameters (net displacement, step length and turning angles) recorded during migration with those recorded in proximity of the road. The analysis of the net displacement indicated that during spring migration reindeer moved at a constant pace towards the calving ground covering a net linear distance of 25 km in 40 days. In the middle of migration, reindeer changed travel direction and roamed parallel to the road for ca. 5 days without approaching further, possibly searching for an undisturbed place and time to cross. Reindeer finally crossed the road before daylight with highly directed movements, increasing their travel speed up to the highest values recorded during migration (4 km/3 hrs vs. 0.5 km/3 hrs). After crossing, reindeer moved quickly toward their calving ground covering the remaining 25 km net distance in less than a week. Migration patterns were markedly affected by disturbance during spring, as the road crossings occurred in the period characterized by the high traffic volume and intense human activities related to Easter holidays; during autumn, on the contrary, the hampering effect of the road was minimal. The results suggest that the current disturbance associated to the road hampers spring migration and might delay the arrival to the calving ground. The planned construction of a large number of recreational cabins in the migration corridor has the potential to threaten the migration and obstruct the access to the calving ground. Normal 0 21 false false false SV X-NONE X-NONE Normal 0 21 false false false EN-US X-NONE X-NONE","PeriodicalId":30034,"journal":{"name":"Rangifer","volume":"33 1","pages":"15-26"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71330938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Have geographical influences and changing abundance led to sub-population structure in the Ahiak caribou herd, Nunavut, Canada?","authors":"A. Gunn, K. Poole, Jack Wierzchowski, J. Nishi, J. Adamczewski, D. Russell, Adrian D'Hont","doi":"10.7557/2.33.2.2544","DOIUrl":"https://doi.org/10.7557/2.33.2.2544","url":null,"abstract":"We examined the premise that changing abundance and environmental conditions influence the seasonal dispersion and distribution of migratory tundra caribou (Rangifer tarandus groenlandicus). The Ahiak herd’s (north-central Nunavut Territory, Canada) calving shifted from dispersed on islands to gregarious calving on the mainland coast. As abundance further increased, the calving ground elongated east and west such that we proposed a longitudinal climate gradient. As well, the calving ground’s east and west ends are different distances from the tree-line, which dips south closer to Hudson Bay. We proposed that whether caribou winter on the tundra or within boreal forest and the different climate across the long calving ground could contribute to differential survival and productivity such that sub-population structure would result. At the scale of the individual cows (identified through satellite-collars), we did not find inter-annual spatial fidelity to either the western or eastern parts of the calving ground. At the population scale (aerial surveys of calving distribution), we also did not find discontinuities in calving distribution. The spatial association of individual cows during calving compared with their association during the rut was inconsistent among years, but overall, cows that calve together, rut together. At this time and with the available evidence, we could not infer sub-population structure from shifts in dispersion and distribution as influenced by geography and changes in abundance for the Ahiak herd.","PeriodicalId":30034,"journal":{"name":"Rangifer","volume":"33 1","pages":"35-58"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71330546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"13th Arctic Ungulate Conference, 22-26 August 2011, Yellowknife, Canada","authors":"B. Åhman, E. Wiklund, T. Hegel","doi":"10.7557/2.33.2.2554","DOIUrl":"https://doi.org/10.7557/2.33.2.2554","url":null,"abstract":"The 13th International Arctic Ungulate Conference was held in Yellowknife, Northwest Territories, Canada, from 22-26 August 2011. This biennial conference is the primary venue for meetings of the International Arctic Ungulate Society.  Over 200 delegates attended the conference with representation from Canada, the United States, Norway, Sweden, Greenland, Finland, Russia, and Japan. The theme of the conference was “Challenges of Managing Northern Ungulates”. The goal of the conference organizers was to address the difficulties of managing ungulate populations that are faced with the unpredictable effects of climate change and an ever-increasing human presence on the land. The conference also focussed on the challenges associated with developing recovery actions for declining caribou and reindeer populations that are an integral part of Aboriginal cultures and ways of life.","PeriodicalId":30034,"journal":{"name":"Rangifer","volume":"33 1","pages":"1-181"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71330627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peary caribou (Rangifer tarandus pearyi) and muskoxen (Ovibos moschatus) on northwest Victoria Island, Northwest Territories","authors":"Tracy Davison, Judy A. Williams","doi":"10.7557/2.33.2.2538","DOIUrl":"https://doi.org/10.7557/2.33.2.2538","url":null,"abstract":"An aerial population survey of Peary caribou (Rangifer tarandus pearyi) and muskoxen (Ovibus moschatus) on Victoria Island, Northwest Territories, was conducted in July 2010. The population estimate of adult Peary caribou was 150 ± 104 (95% Confidence Interval [CI]) was not significantly different than the 2005 estimate of 66 ± 61 (P < 0.05). There was also an estimate of 430 ± 214 (95% CI) adult Dolphin-Union caribou (R. t. groenlandicus x pearyi) in the study area. However, these caribou represent only a small portion of the Dolphin-Union herd.  The population estimate of 11 442 ± 1637 (95% CI) adult muskoxen is not significantly different than the 2005 estimate of 12 062 ± 2156 (P < 0.05).","PeriodicalId":30034,"journal":{"name":"Rangifer","volume":"46 1","pages":"129-134"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71330991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Robert John \"Bob\" Hudson","authors":"Bill Samuel, B. Stelfox, L. Foote","doi":"10.7557/2.33.2.2548","DOIUrl":"https://doi.org/10.7557/2.33.2.2548","url":null,"abstract":"","PeriodicalId":30034,"journal":{"name":"Rangifer","volume":"33 1","pages":"13"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71330606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Arctic Borderlands Ecological Knowledge Cooperative: can local knowledge inform caribou management?","authors":"D. Russell, M. Svoboda, Jadah Arokium, D. Cooley","doi":"10.7557/2.33.2.2530","DOIUrl":"https://doi.org/10.7557/2.33.2.2530","url":null,"abstract":"While quantitative analyses have traditionally been used to measure overall caribou herd health, qualitative observational data can also provide timely information that reflects what people on the land are observing. The Arctic Borderlands Ecological Knowledge Co-op (ABEKC) monitors ecological change in the range of the Porcupine Caribou Herd (PCH). The community-based monitoring component of the Co-op’s mandate involves the gathering of local knowledge through interviews with local experts in a number of communities.We analyzed the responses to interviews collected during 2000–2007 related to caribou availability, harvest success, meeting needs and caribou health during fall and spring. Interviews revealed 1) caribou greater availability during the survey period, 2) an increasing trend in the proportion of harvesters that met their needs 3) no trend in animals harvested or proportion of successful hunters and 4) improving overall caribou health throughout the period.There was no population estimate for the herd between 2001 and 2010. In 2001, 123,000 caribou were estimated in the herd. Based on an estimated 178,000 in 1989, a declining trend of ~ 3% annually occurred at least until 2001. In the interim agencies and boards feared the herd continued to decline and worked towards and finalized a Harvest Management Plan for the herd. In contrast, from the Co-op interviews all indications suggested improving herd conditions throughout most of the decade. A successful survey in 2010 determined the herd had grown to 169,000 animals. We conclude that the community-based interviews provided a valid, unique information source to better understand caribou ecology and express community perceptions of overall herd status and could provide a valuable contribution to management decision making.  We recommend that ABEKC results become standard input into Porcupine Caribou harvest management decisions and serve as a model of integrating community based monitoring data into resource management decision making throughout the north.","PeriodicalId":30034,"journal":{"name":"Rangifer","volume":"33 1","pages":"71-78"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71330596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CircumArctic Rangifer monitoring and assessment (CARMA) network – origins, goals, accomplishments and future","authors":"D. Russell, G. Kofinas, A. Gunn, R. White, S. Kutz","doi":"10.7557/2.33.2.2534","DOIUrl":"https://doi.org/10.7557/2.33.2.2534","url":null,"abstract":"This journal is published under the terms of the Creative Commons Attribution 3.0 Unported License Editor in Chief: Birgitta Ahman, Technical Editor Eva Wiklund and Graphic Design: Bertil Larsson, www.rangifer.no Origins !e CircumArctic Rangifer Monitoring and Assessment (CARMA) network is an informal group of scientists, community representatives, and management agencies who formed to better understand the impacts of global changes on migratory tundra caribou. In this report we outline how that network evolved, discuss some of the accomplishments of the group, and look forward to CARMA’s future. CARMA was formally launched in Vancouver in 2004. !is launch was preceded by several events. In 1998 the Arctic Council ministers directed the Conservation of Arctic Flora and Fauna (CAFF) to “identify elements of a program to monitor circumpolar biodiversity” and to “assess the e\"ects of climate change on Arctic ecosystems”. Concurrent with that initiative, in 1999 in Rovaniemi, Finland, the International Arctic Science Committee (IASC) and the US National Science Foundation funded an interdisciplinary conference of Rangifer managers, users, and scientists to discuss elements of a circumpolar monitoring and assessment network for human-Rangifer systems and the formation of a community to implement the plan (Russell et al., 2000). After a meeting to implement the Arctic Council’s directive, Rangifer was con#rmed as a key indicator species and the CARMA network was o$cially endorsed by CAFF. With that endorsement and the plan from the Rovaniemi conference in mind, the IASC human-Rangifer study group met in Minary, New Hampshire, in 2001 and %eshed out the elements of a Rangifer network, leading to the o$cial launch of the CARMA network. Subsequently, in 2005, CARMA was invited to become an o$cial network under the Circumpolar Biodiversity Monitoring Program (CBMP). !e CBMP reports to the CAFF.","PeriodicalId":30034,"journal":{"name":"Rangifer","volume":"33 1","pages":"141-144"},"PeriodicalIF":0.0,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71330800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}