PLEISTOCENE ZOOGEOGRAPHY OF THE LEMMING, DICROSTONYX
نویسندگان
چکیده
منابع مشابه
Spatial structure of lemming populations (Dicrostonyx groenlandicus) fluctuating in density.
The pattern and scale of the genetic structure of populations provides valuable information for the understanding of the spatial ecology of populations, including the spatial aspects of density fluctuations. In the present paper, the genetic structure of periodically fluctuating lemmings (Dicrostonyx groenlandicus) in the Canadian Arctic was analysed using mitochondrial DNA (mtDNA) control regi...
متن کاملThe summer decline of the collared lemming, Dicrostonyx groenlandicus, in high arctic Greenland
I studied the population structure and dynamics of the collared lemming, Dicrostonyx groenlandicus Traill, on Traill Island (NE Greenland) in 1998 to 2000. This is the first comprehensive study of a Greenlandic collared lemming population. During this period, population density continuously declined ( 100 fold-decrease) from more than 10 ind/ha (peak year 1998) to less than 0.1 ind/ha (low year...
متن کاملAncient DNA supports southern survival of Richardson's collared lemming (Dicrostonyx richardsoni) during the last glacial maximum.
Collared lemmings (genus Dicrostonyx) are circumpolar Arctic arvicoline rodents associated with tundra. However, during the last glacial maximum (LGM), Dicrostonyx lived along the southern ice margin of the Laurentide ice sheet in communities comprising both temperate and boreal species. To better understand these communities and the fate of these southern individuals, we compare mitochondrial ...
متن کاملMultiple glacial refugia in the North American Arctic: inference from phylogeography of the collared lemming (Dicrostonyx groenlandicus).
Cryptic northern refugia beyond the ice limit of the Pleistocene glaciations may have had significant influence on the current pattern of biodiversity in Arctic regions. In order to evaluate whether northern glacial refugia existed in the Canadian Arctic, we examined mitochondrial DNA phylogeography in the northernmost species of rodents, the collared lemming (Dicrostonyx groenlandicus) sampled...
متن کاملGeologia Croatica First record of Dicrostonyx ( Rodentia , Mammalia ) in the Late Pleistocene / ? Holocene sediments of Croatia
The fossil remains of lemmings (Dicrostonyx sp.) have been discovered for the first time in Croatia. The small sample of 11 teeth (M1-3 and M1) originate from the Late Pleistocene/?Holocene sediments from the Romualdova pećina site (Western Istria). The resemblance has been observed in morphological data, while some metrical parameters differ slightly in comparison to the findings from some oth...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Evolution
سال: 1963
ISSN: 0014-3820
DOI: 10.1111/j.1558-5646.1963.tb03270.x