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Dissertations / Theses on the topic 'Rangifer Rangifer'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Weinstock, Jacobo. "Late pleistocene reindeer populations in Middle and Western Europe : an osteometrical study of Rangifer tarandus /." Tübingen : Mo Vince Verl, 2000. http://catalogue.bnf.fr/ark:/12148/cb39199574r.

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2

Ball, Mark Christopher. "Factors affecting the distribution and transmission of Elaphostrongylus rangiferi in caribou (Rangifer tarandus caribou) of Newfoundland." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0020/MQ54509.pdf.

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3

Kakol, Katarzyna. "Environmental enrichment for zoo-housed Icelandic reindeer (Rangifer tarandus)." Thesis, Linköpings universitet, Biologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-176030.

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Environmental enrichment is commonly used to improve the welfare of captive animals by offering options to increase behavioural diversity and normal behaviour patterns. The aim of this study was to assess if environmental enrichment has a positive effect on a group of four zoo-housed reindeer, Rangifer tarandus. Three types of environmental enrichment were used: food enrichment, olfactory enrichment, and tactile enrichment, with a spontaneous rotation to prevent habituation. Following a baseline period of ten days without enrichment, the animals’ behaviour was monitored for four months with en

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4

Freeman, Nicola L. "Motorized backcountry recreation and stress response in Mountain Caribou (Rangifer tarandus caribou)." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2287.

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Mountain caribou (Rangifer tarandus caribou) are endangered in British Columbia and motorized backcountry recreation has been identified as a potential threat to their persistence. My objective was to test if fecal glucocorticoids (GCs), indicative of physiological effects of ecological stress in wildlife, could be used as a non-invasive tool to quantify stress response in free-ranging caribou exposed to motorized recreation. I validated an enzyme-linked immunosorbent assay (ELISA) to measure concentration of fecal GCs for R. tarandus using an adrenocorticotropic hormone (ACTH) challenge exper

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5

Pöllänen, A. (Antti). "Metsäpeuran (Rangifer tarandus fennicus) levinneisyys- ja populaatiodemografinen historia:populaatioiden synty, kehitys ja tulevaisuus Suomessa." Bachelor's thesis, University of Oulu, 2017. http://urn.fi/URN:NBN:fi:oulu-201711153108.

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6

Anderson, Robert B. "Peatland habitat use and selection by woodland caribou (Rangifer tarandus caribou) in northern Alberta." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ47003.pdf.

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7

Hirai, Tamaki. "An evaluation of woodland caribou (Rangifer tarandus caribou) calving habitat in the Wabowden area, Manitoba." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ32130.pdf.

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8

Soppela, Päivi. "Fats as indicators of physiological constraints in newborn and young reindeer : Rangifer tarandus tarandus L. /." Oulu : Oulun yliopisto, 2000. http://herkules.oulu.fi/isbn9514256891/isbn9514256891.pdf.

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9

Pachkowski, Melanie Dawn. "Dynamique des populations de caribous migrateurs (Rangifer tarandus) basée sur des indices de condition corporelle." Mémoire, Université de Sherbrooke, 2012. http://hdl.handle.net/11143/5762.

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Monitoring and understanding wildlife population dynamics is key to their management and conservation. High population size or density can negatively affect demographic parameters including reproduction, recruitment and survival. These parameters are intricately linked to individual body size and condition. Migratory caribou ( Rangifer tarandus ) are a keystone species in the tundra. Populations can fluctuate drastically and rapidly and are challenging to monitor and manage. As an alternative to population estimates, indirect ecological indicators, which are density-dependent indices based on

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10

Wilson, John E. "Habitat characteristics of late wintering areas used by woodland caribou (Rangifer tarandus caribou) in northeastern Ontario." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ61308.pdf.

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11

Martinez, Isabel M. "Winter habitat use by woodland caribou (Rangifer tarandus caribou) in the Owl Lake region of Manitoba." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ41662.pdf.

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12

McLeman, Craig. "Determining the relationships between forage use, climate and nutritional status of barren ground caribou, Rangifer tarandus groenlandicus, on Southampton Island, Nunavut, using stable isotopes analysis of d 13C and d 15N." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/2957.

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The caribou (Rangifer tarandus groenlandicus) on Southampton Island, Nunavut, Canada for the years 1998-2000 and 2004, 2005, were investigated using stable isotope analysis (SIA) of carbon (d 13C) and nitrogen (d 15N). Spring signatures of rumen contents and muscle samples were correlated with standard biological measures of back fat and Riney kidney fat index. Caribou d 13C and d 15N ratios, together with detailed rumen content analysis, show that SIA data yields a time-integrated signal reflective of spatial and temporal variation in feeding ecology and as such is capable of detecting tr

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13

Persson, Linn. "Möjligheten att återintroducera skogsvildrenen till Sverige : Återintroduktionens påverkan i området mellan Mora, Leksand och Vansbro." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-124825.

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The purpose of this study was to investigate if Sweden should reintroduce wild forest reindeer (Rangifer tarandus fennicus Lönn) to the Swedish fauna and what conditions there were for a reintroduction to Vildmarksriket between Mora, Leksand and Vansbro. The purpose was also to investigate the impact of the reintroducement of the stakeholders in the area, such as forest owners, farmers, authorities, organizations and local residents. The methods used were a quantitative attitude survey which consisted of questionnaires and qualitative interviews. The interviews were strategically selected and

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14

Dyer, Simon James. "Movement and distribution of woodland caribou (Rangifer tarandus caribou) in response to industrial development in northeastern Alberta." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ47023.pdf.

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15

Paez, Carlos Eugenio. "Alpine vegetation of areas utilized by introduced populations of caribou (Rangifer tarandus) on the Kenai Peninsula, Alaska." Related article by author. Author believes readers of his thesis may find this article useful, 1991. http://www.arlis.org/docs/vol1/A/325194251.pdf.

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16

Soppela, P. (Päivi). "Fats as indicators of physiological constraints in newborn and young reindeer:Rangifer tarandus tarandus L." Doctoral thesis, University of Oulu, 2000. http://urn.fi/urn:isbn:9514256891.

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Abstract The semi-domesticated reindeer is a northern species of Cervidae that is exposed to extreme seasonal changes in temperature and nutrition in its living environment. The objective of this study was to examine the significance of thermogenic brown adipose tissue (BAT) for the survival of newborn reindeer in the cold during the critical perinatal period. The other main objective was to study the effect of wintertime undernutrition on serum and bone marrow fatty acid composition in yearling reindeer, with particular attention on the proportions of unsaturated and polyunsaturated fatty aci

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17

Taillon, Joëlle. "Condition physique, allocation maternelle et utilisation spatio-temporelle des aires de mise bas du caribou migrateur, rangifer tarandus." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29639/29639.pdf.

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18

Magnac, Marie-Pierre. "Etude comparative de l'ontogenèse sociale précoce chez trois espèces d'ongulés en captivité : Bison bison, Rangifer tarandus, Ovis vignei." Toulouse 3, 1995. http://www.theses.fr/1995TOU30090.

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Le developpement social d'un jeune lorsqu'il passe des la naissance par une periode de contact intense avec la mere, est generalement decrit en terme de construction d'une relation etroite avec celle-ci. Sa specificite, son caractere d'induction et de facilitation du developpement ontogenetique sont des faits communs a de nombreuses especes de mammiferes. Nous avons reconsidere l'ontogenese sociale de jeunes ongules, en exploitant certaines notions de la theorie de l'attachement (pour mesurer le comportement du point de vue d'un observateur externe aux individus etudies) puis en adoptant la po

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19

Losier, Chrystel. "Les réponses fonctionnelles dans la sélection de l'habitat influencent la survie du caribou forestier ( Rangifer tarandus ) en fôret boréale." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/30448/30448.pdf.

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Ce projet visait à déterminer comment les réponses fonctionnelles dans la sélection de l’habitat influencent la survie des caribous forestiers adultes (Rangifer tarandus). Une réponse fonctionnelle apparaît lorsque la sélection pour un milieu varie en fonction de sa disponibilité ou celle d’un autre milieu. La sélection de l’habitat a été modélisée pour 83 caribous, dont 20 qui sont morts durant le suivi. Une forte probabilité de présence à proximité des coupes était associée à un fort risque de mortalité, particulièrement si cette probabilité augmentait fortement avec l’abondance des coupes.

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20

Skuterud, Lavrans. "Investigation of selected natural and anthropogenic radionuclides in reindeer (Rangifer tarandus tarandus) and lynx (Lynx lynx)." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for kjemi, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1689.

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The present thesis investigates a range of dietary, physiological and environmental factors influencing transfer and long-term behaviour of radionuclides in reindeer and lynx. Feeding experiments were designed to provide details on factors related to absorption, retention and secretion of radionuclides in reindeer, while concentrations and time trends of radionuclides in the environment were studied in two reindeer herding districts during the period 2000 – 2003. Data on 137Cs in reindeer from 1986 onwards and samples of lynx were obtained from national archives. In the first feeding experimen

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21

Draiby, Draiby. "Possibilities for, and attitudes towards, a potential reintroduction of wild forest reindeer Rangifer tarandus fennicus Lönn. to parts of Sweden." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-48324.

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Abstract The wild forest reindeer is a subspecies of the reindeer. Wild forest reindeer earlier had a wide distribution range in Sweden, but it was extinct in the middle of the 19:th century because of extensive hunting. In Finland, the w.f.reindeer was extinct a few decades later by similar reasons. Later they migrated back to the eastern parts of Finland in the middle of the 20: th century. Around 1980, the w.f.reindeer was actively rentroduced to western Finland, and there the population has had a positive development. In eastern Finland though, the population have declined fast during the

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22

Kaarlejärvi, Elina. "The role of herbivores in mediating responses of tundra ecosystems to climate change." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-85208.

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The Arctic areas are warming more rapidly than other parts of the world. Increasing temperatures are predicted to result in shrubification, higher productivity, declining species diversity and new species invasions to the tundra. Changes in species diversity and plant community composition are likely to alter ecosystem functions with potential consequences for human population also at lower latitudes. Thus, in order to better predict the effects of the rapid arctic warming, we need knowledge on how plant communities respond to a warmer climate. Here, I investigate the effects of climate warmin

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23

Holma-Suutari, A. (Anniina). "Harmful agents (PCDD/Fs, PCBs, and PBDEs) in Finnish reindeer (Rangifer tarandus tarandus) and moose (Alces alces)." Doctoral thesis, Oulun yliopisto, 2014. http://urn.fi/urn:isbn:9789526206646.

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Abstract In Finland there is a food monitoring program which has found elevated dioxin and polychlorinated biphenyl concentrations in the muscle of semi-domesticated reindeer (Rangifer tarandus tarandus) calves. This led to further research on the concentrations of persistent organic pollutants in reindeer muscle, liver, and other internal organs. The research was further expanded on wild moose (Alces alces) muscle and liver. The main objective of this thesis is to increase knowledge of polychlorinated dibenzo-p-dioxin (PCDD), polychlorinated dibenzofuran (PCDF), polychlorinated biphenyl (PCB)

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24

Courault, Romain. "Les paysages culturels de l’élevage de rennes en Scandinavie face au changement global : une approche multi-scalaire (Laponie suédoise, Sud norvégien)." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUL134.

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Les régions subarctiques font face aux effets interconnectés et pluri-scalaires du changement global (amplification des extrêmes bioclimatiques et intensification dans l’utilisation des sols). Le renne, Rangifer tarandus est un grand herbivore qui migre annuellement sur de grands espaces pour ses besoins biologiques. L’ongulé cristallise de nombreux enjeux paysagers pour les pastoralismes saamis. Plusieurs populations de rennes seront étudiées dans un suivi multi-scalaire. Nous évaluons les effets directs du changement global (fragmentation paysagère et changements climatiques) sur les paysage

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25

Murray, N. A. "The behavioural ecology of reindeer (Rangifer tarandus) during the last glaciation in Britain and its implications for human settlement, subsistence and mobility." Thesis, University of Edinburgh, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504267.

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26

Vachon, Mélissa. "Analyse dendroécologique de l'activité du caribou migrateur (Rangifer tarandus) à proximité des réservoirs hydroélectriques du Complexe La Grande, Baie James, Québec subarctique." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26644/26644.pdf.

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27

Gagné, Caroline. "Le potentiel de compétition apparente entre l’orignal (Alces alces) et le caribou forestier (Rangifer tarandus caribou) varie le long d’un gradient latitudinal." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25498.

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À la suite d’une coupe forestière, les parterres en régénération peuvent subir un enfeuillement favorable à l’orignal. L’accroissement des populations de loups qui s’en suit affecte alors les populations du caribou forestier. Ce projet vise à évaluer si la contribution de la coupe forestière à cette compétition apparente varie selon un gradient latitudinal. Nous avons modélisé la sélection d’habitat d’orignaux, de loups et de caribous. Après la prise en compte de l’âge de la coupe, l’enfeuillement des parterres diminuait avec la latitude. La sélection des parterres de coupe par les orignaux et

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28

Gagnon, Marianne, and Marianne Gagnon. "Associations entre la diversité génétique et la performance individuelle chez le caribou migrateur (Rangifer tarandus) du nord du Québec et du Labrador." Master's thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/32635.

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Les liens entre la diversité génétique et la performance individuelle peuvent révéler l’existence de dépression de consanguinité ou de sélection naturelle à certains loci fonctionnels dans une population. Dans cette étude, nous avons étudié l’association de la diversité génétique avec des traits de performance (survie annuelle et masse corporelle) chez le caribou migrateur appartenant à deux populations en déclin au Québec et au Labrador. Nous avons évalué la diversité génétique à deux échelles génétiques: i) à l’échelle du génome (22073 polymorphismes nucléotidiques simples) et ii) chez un lo

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29

Salgado-Flores, Alejandro, Live H. Hagen, Suzanne L. Ishaq, et al. "Rumen and Cecum Microbiomes in Reindeer (Rangifer tarandus tarandus) Are Changed in Response to a Lichen Diet and May Affect Enteric Methane Emissions." Public Library of Science, 2016. http://hdl.handle.net/10150/614952.

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Reindeer (Rangifer tarandus tarandus) are large Holarctic herbivores whose heterogeneous diet has led to the development of a unique gastrointestinal microbiota, essential for the digestion of arctic flora, which may include a large proportion of lichens during winter. Lichens are rich in plant secondary metabolites, which may affect members of the gut microbial consortium, such as the methane-producing methanogenic archaea. Little is known about the effect of lichen consumption on the rumen and cecum microbiotas and how this may affect methanogenesis in reindeer. Here, we examined the effects

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30

White, Lori. "Long-term Habitat Trends in Barren-ground Caribou." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/23752.

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Global and local climate patterns may affect barren-ground caribou (Rangifer tarandus groenlandicus) populations. I predicted global climate changes to be correlated with periods of population decline, and local changes to be more pronounced on the habitat of caribou with a declining population. In chapter 1, the Arctic Oscillation (AO), changes in normalized difference vegetation index and phenology were used as measures of global and local climate. In chapter 2 environmental variables and caribou presence points were used to build Maxent habitat models. There was no consistent correlation

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31

Lovatt, Fiona Margaret. "A study of the impact of population bottlenecks on the genetics and morphology of reindeer (Rangifer tarandus tarandus) on the island of South Georgia." Thesis, Durham University, 2007. http://etheses.dur.ac.uk/2315/.

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Numerous studies have shown that population bottlenecks result in loss of genetic diversity and as a consequence of this, it is commonly inferred that there is a loss of evolutionary potential. It is rare that circumstances are such that there should be well documented details of the founder event, such as the size and date of the bottleneck, that there should be access to subsequent demographic information and to suitable samples from both the post-bottleneck and the source populations. It is even less common for this information to be available for two separate bottlenecks that occurred in p

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32

Kumpula, J. (Jouko). "Productivity of the semi-domesticated reindeer (Rangifer t. tarandus L.) stock and carrying capacity of pastures in Finland during 1960-1990's." Doctoral thesis, University of Oulu, 2001. http://urn.fi/urn:isbn:9514265556.

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Abstract Although the present day management of semi-domesticated reindeer (Rangifer t. tarandus L.) and its operational environment have changed from the past, knowledge of the ecological mechanisms typical of traditional herding is still important. The main objective of this study was to examine factors related to stock productivity and carrying capacity of pastures in the Finnish semi-domesticated reindeer management area during 1960-1990's in order to clarify the basis of the present management strategies in Finland. In the Oraniemi district, before 1987, calf production was more a

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33

Antifeau, Theodore Danial. "The significance of snow and arboreal lichen in the winter ecology of mountain caribou (Rangifer tarandus caribou) in the North Thompson Watershed of British Columbia." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26160.

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The winter ecology of mountain caribou (Rangifer tarandus caribou) in the North Thompson watershed of British Columbia was investigated over winters 1978-79 and 1979-80. The main objective of the study was to evaluate caribou movements and habitat use in relation to indices of energy cost of locomotion in snow and to forage availability, especially arboreal lichens. These data were collected in habitats from valley bottom to alpine throughout winter. Largely because of their high arboreal lichen productivity, mature forests are regarded by wildlife managers as essential winter habitat of carib

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34

Säkkinen, H. (Hannele). "Variation in the blood chemical constituents of reindeer:significance of season, nutrition and other extrinsic and intrinsic factors." Doctoral thesis, University of Oulu, 2005. http://urn.fi/urn:isbn:9514277732.

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Abstract Reindeer management in the Fennoscandian area is currently facing challenges such as degradation of winter pastures, which may lead in the most severely affected areas to a concurrent decline in reindeer herd productivity. The use of often expensive supplementary feeding to prevent production losses has increased the demand for studies on the physiological effects of nutritional restriction and supplementary feeding. The knowledge obtained from such studies could be used, for example, to monitor the condition of reindeer in studies assessing herd productivity levels in different pastu

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35

Le, Corre Mael René Vincent. "Influence du climat, de la disponibilité des ressources et de la taille des populations sur la phénologie et les patrons de migration du caribou migrateur, "Rangifer tarandus"." Doctoral thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/27020.

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De nombreuses populations migratrices sont actuellement en déclin. Les changements climatiques entrainent des modifications dans les habitats des espèces migratrices et la phénologie des processus naturels, lesquels se répercutent sur la migration, une période critique pour ces espèces. Comprendre comment les variables environnementales et climatiques affectent la phénologie et les patrons de migration est donc crucial. Ma thèse s'intéresse à l'impact du climat, des ressources alimentaires et de la compétition sur les migrations printanières et automnales des caribous migrateurs, Rangifer tara

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Kuntz, Delphine. "Ostéométrie et migration(s) du renne (Rangifer tarandus) dans le Sud-Ouest de la France au cours du dernier Pléniglaciaire et du Tardiglaciaire (21500 - 13000 ca. BP)." Thesis, Toulouse 2, 2011. http://www.theses.fr/2011TOU20101.

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Cette recherche doctorale entend caractériser les fluctuations morphologiques des rennes paléolithiques du Sud-Ouest de la France consécutives aux changements climatiques. En effet, le dernier Pléniglaciaire et le Tardiglaciaire (entre 21 500 - 13 000 cal. BP) ont constitué des périodes de contraintes paléoclimatiques et paléoenvironnementales particulièrement fortes, qui ont occasionné, directement ou indirectement, des répercussions sur la taille corporelle des populations de rennes. Les séries analysées dans le cadre de ce travail proviennent tant du registre actuel que fossile. Plusieurs é

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Kuntz, Delphine. "Ostéométrie et migration(s) du renne (Rangifer tarandus) dans le Sud-Ouest de la France au cours du dernier Pléniglaciaire et du Tardiglaciaire (21 500 - 13 000 cal. BP)." Phd thesis, Université Toulouse le Mirail - Toulouse II, 2011. http://tel.archives-ouvertes.fr/tel-00725310.

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Cette recherche doctorale entend caractériser les fluctuations morphologiques des rennes paléolithiques du Sud-Ouest de la France consécutives aux changements climatiques. En effet, le dernier Pléniglaciaire et le Tardiglaciaire (entre 21 500 - 13 000 cal. BP) ont constitué des périodes de contraintes paléoclimatiques et paléoenvironnementales particulièrement fortes, qui ont occasionné, directement ou indirectement, des répercussions sur la taille corporelle des populations de rennes. Les séries analysées dans le cadre de ce travail proviennent tant du registre actuel que fossile. Plusieurs é

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38

Ylänne, H. (Henni). "Herbivory control over tundra carbon storage under climate change." Doctoral thesis, Oulun yliopisto, 2017. http://urn.fi/urn:isbn:9789526215105.

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Abstract Air temperatures in high-latitude regions are anticipated to rise by several degrees by the end of the century and result in substantial northward shifts of species. These changes will likely affect the source and sink dynamics of greenhouse gases and possibly lead to a net carbon release from high-latitude soils to the atmosphere. However, regional differences in carbon cycling depend highly on the vegetation community composition, which may be controlled by the abundance of herbivores. I investigated whether mammalian herbivores, mainly reindeer and rodents, alter ecosystem carbon s

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39

Egelkraut, Dagmar D. "Long-lasting ecological legacies of reindeer on tundra vegetation." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-142131.

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Reindeer can have strong effects on the plant species composition and functioning of tundra ecosystems, and often promote a transition towards a graminoid-dominated vegetation type. As a result, they influence many ecological processes, such as nutrient dynamics, soil biotic composition and functioning, and carbon storage. Several studies suggest that the effect of reindeer on vegetation may follow predictable patterns and could induce an alternative stable vegetation state. However, little empirical data on the long-term stability of reindeer effects on vegetation exist, as it is inherently c

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40

Polfus, Jean. "An interdisciplinary approach to describing biological diversity." Ecology and Society; Journal of Biogeography, 2016. http://hdl.handle.net/1993/31986.

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The concept of biodiversity – the phenotypic and genotypic variation among organisms – is central to conservation biology. There is growing recognition that biodiversity does not exist in isolation, but rather is intrinsically and evolutionarily linked to cultural diversity and indigenous knowledge systems. In Canada, caribou (Rangifer tarandus) occupy a central place in the livelihoods and identities of indigenous people and display substantial variation across their distribution. However, quantifying caribou intraspecific variation has proven challenging. Interdisciplinary approaches are nec

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Kushny, James E. E. "Conservation genetics of Canadian caribou (Rangifer tarandus) herds." 2005. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=370511&T=F.

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Campbell, Mitch William. "The winter ecology of Cape Churchill caribou (Rangifer tarandus ssp.)." 1995. http://hdl.handle.net/1993/7357.

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Aspects of snow conditions, plant community use, and feeding habits were examined for caribou occupying the Cape Churchill Wildlife Management Area. Studies were carried out over each of the 1989-90 and 1990-91 snow seasons. Attempts were made to interrelate feeding habits and plant community use with changing snow conditions based on 7 snow stations set up within four taiga and three tundra plant communities. Fundamental differences between taiga and tundra snow conditions are also discussed. Plant communities were described based on quadrat and point quarter methods, prior to snowfall, w

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Čepelka, Ladislav. "Zhodnocení krmných dávek pro kopytníky v průběhu roku." Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-87406.

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Renton, Jennifer Lynn. "Habitat selection by the Slate Island boreal woodland caribou (Rangifer tarandus caribou)." 2015. http://hdl.handle.net/1993/30676.

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The Slate Islands caribou (Rangifer tarandis caribou) is an insular population which has experienced several population crashes and has been described as likely to succumb to extirpation. While a great deal of research has been conducted on mainland woodland caribou, factors which influence caribou distributions may differ between island and main land populations. In this thesis, I investigate relationships between habitat, landscape, anthropogenic features, population size, predation and spatial distribution of woodland caribou across the Slate Islands Provincial Park (Ontario) at the forest-

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Body, Guillaume. "Importance of group dynamics on female mating behaviour in reindeer Rangifer tarandus." Thesis, 2014. http://spectrum.library.concordia.ca/978345/9/Body_G_PhD_2014.pdf.

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The aim of this work is to investigate female mating behaviour in reindeer Rangifer tarandus using a combination of both field and GPS based data. By developing adequate methodology, I was able to remotely estimate individual activity budgets, and to investigate fission-fusion group dynamics in a controlled herd. Variations of the group dynamics revealed an increase in group size at the beginning of the peak rut, resulting from an increase of group cohesiveness. I demonstrated that this increase in cohesiveness resulted from the herding behaviour of males, rather than female mate choice. Haras

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Flasko, Amy. "Sociogenetics: Exploring fine-scale social structure of woodland caribou (Rangifer tarandus caribou)." 2014. http://hdl.handle.net/1993/23552.

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The sociogenetic structure of woodland caribou was explored using non-invasive fecal sampling. Fecal pellet sampling occurred in South Jasper during the fall of (2006 to 2012) and in North Interlake during the winter (2004 to 2010). Samples were amplified at 10 microsatellite loci and unique individuals identified. We used fecal pellet morphometrics and measured fecal reproductive hormone levels to distinguish calf from adult age-classes of woodland caribou. In addition, we conducted pedigree analysis of South Jasper caribou using the COLONY 2.0 program. Results demonstrated that pellet morpho

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Priadka, Pauline. "Genetic connectivity of boreal woodland caribou (Rangifer tarandus caribou) in central Canada." 2016. http://hdl.handle.net/1993/31146.

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Delineating population units is essential for the conservation and management of a species. Applying a genetic approach to delineate units, this study identifies genetic population structure, and landscape resistance to gene flow, of the nationally threatened boreal woodland caribou (Rangifer tarandus caribou) across the ecotypes’ southern range in Saskatchewan. Three genetic clusters were delineated across the study area, with moderate genetic connectivity identified with Manitoba. Isolation-by-distance was found to be significant across Saskatchewan, and within each genetic cluster. Gene flo

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Wittmer, Heiko Uwe. "Mechanisms underlying the decline of mountain caribou (Rangifer tarandus caribou) in British Columbia." Thesis, 2004. http://hdl.handle.net/2429/15839.

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The distribution and abundance of mountain caribou (Rangifer tarandus caribou) in British Columbia has declined. High predation rates as a consequence of forest management and associated changes to the relative abundances of alternate ungulate prey species have been proposed to cause the population declines. A direct link between changes in the forest age structure and declining caribou population trends, however, is lacking. Understanding the underlying mechanism of the population decline is necessary to develop recovery strategies aimed at maintaining a viable mountain caribou populat

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Eklund, Ida. "Prevalence of microorganisms in reindeer(Rangifer tarandustarandus)and possible effects of climate changes." Thesis, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-349082.

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The climate in the north is changing over time, which affects the nature in many ways. For instance, some microorganisms that cause infections might become more common. This might have negative consequences for reindeer husbandry. In Sweden, this is an industry that is relatively large. However, even though the reindeer is common in the north the knowledge about its diseases is limited.In this study the prevalence of microorganisms that may cause infection in reindeer was investigated. Comparisons between different sami villages and previous studies were performed to detect differences that co

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Rudolph, Tyler. "Spring dispersal and habitat selection of boreal caribou (Rangifer tarandus caribou) in Northern Quebec." Mémoire, 2011. http://www.archipel.uqam.ca/5272/1/M12089.pdf.

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La conservation du caribou forestier est un enjeu clé de la gestion écosystémique. Le plan de rétablissement du caribou forestier, publié par le Québec en 2009, propose une approche de gestion forestière qui comprend le maintien de la connectivité entre des massifs de protection afin de faciliter les déplacements du caribou. Cependant, la majorité des études sur le caribou forestier se concentrent sur des périodes sédentaires soient l'hiver et la mise bas. Dans cette étude nous avons étudié le comportement du caribou boréal du Nord-du-Québec durant une période de déplacement, la dispersion pri

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