Home ranges in Svalbard reindeer
نویسندگان
چکیده
منابع مشابه
Foraging optimally for home ranges
Economic models predict behavior of animals based on the presumption that natural selection has shaped behaviors important to an animal’s fitness to maximize benefits over costs. Economic analyses have shown that territories of animals are structured by trade-offs between benefits gained from resources and costs of defending them. Intuitively, home ranges should be similarly structured, but tra...
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Mainland populations of Arctic reindeer and caribou Rangifer tarandus often undergo extensive movements, whereas populations on islands tend to be isolated and sedentary. To characterize the genetic consequences of this difference, levels of genetic diversity and subdivision of Svalbard reindeer (R. t. platyrhynchus) from two adjacent areas on Nordenskjiöldland, Spitsbergen were estimated using...
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The Svalbard reindeer relies on a highly active rumen microbial population of bacteria, fungi and protozoa for the utilization of cellulose and hemicellulose, the major components of growing plants (Rogers and Perkins, 1968). O n Svalbard the availability and quality of food changes during the year, ranging from fresh young forage in summer (July September), to a highly concentrated diet, inclu...
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The dominant rumen bacteria in high-arctic Svalbard reindeer were characterized, their population densities were estimated, and ruminal pH was determined in summer, when food quality and availability are good, and in winter, when they are poor. In summer the total cultured viable population density was (2.09 +/- 1.26) X 10(10) cells ml-1, whereas in winter it was (0.36 +/- 0.29) X 10(10) cells ...
متن کاملNew Insights into the Microbiota of the Svalbard Reindeer Rangifer tarandus platyrhynchus
Svalbard reindeer (Rangifer tarandus platyrhynchus) is a non-migratory subspecies of reindeer inhabiting the high-arctic archipelago of Svalbard. In contrast to other Rangifer tarandus subspecies, Svalbard reindeer graze exclusively on natural sources of food and have no chance of ingestion of any crops. We report the use of a non-invasive method for analysis of fecal microbiome by means of seq...
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ژورنال
عنوان ژورنال: Rangifer
سال: 1990
ISSN: 1890-6729
DOI: 10.7557/2.10.3.846