scholarly journals Late Pleistocene and Holocene vertebrates and palaeoenvironments from Charlie Lake Cave, northeast British Columbia

1988 ◽  
Vol 25 (10) ◽  
pp. 1545-1553 ◽  
Author(s):  
Jonathan C. Driver
Keyword(s):  
British Columbia ◽  
Late Pleistocene ◽  
Ground Squirrel ◽  
Lepus Americanus ◽  
Bison Bison ◽  
Snowshoe Hare ◽  
Climatic Fluctuations ◽  
Peace River ◽  
European Settlement ◽  
Cliff Swallow

Excavations outside Charlie Lake Cave, Peace River District, British Columbia, revealed deposits dating from ~10 700 BP to the present. The earliest fauna (10 700 – 10 000 BP) was deposited when the newly deglaciated landscape was largely unforested and included bison (Bison sp.), ground squirrel (Spermophilus sp.), a large hare (Lepus sp.), snowshoe hare (Lepus americanus), and a variety of birds, including the Cliff Swallow (Hirundo pyrrhonota). By 10 000 BP snowshoe hare (Lepus americanus) was the most numerous mammal, indicating the development of forested conditions. By 9000 BP the fauna resembled the modern Peace River fauna prior to European settlement, typical of a largely forested landscape, with wetland areas indicated by aquatic avian species. Subsequent Holocene climatic fluctuations are not evident in the faunal record.

Ancient DNA reveals northwest range extension of Richardson’s ground squirrel (Urocitellus richardsonii) into northeastern British Columbia, Canada, during the Late Pleistocene

2020 ◽  
Vol 57 (7) ◽  
pp. 855-866
Author(s):  
Thomas C.A. Royle ◽  
Dongya Y. Yang ◽  
Jonathan C. Driver
Keyword(s):  
British Columbia ◽  
Ancient Dna ◽  
Ground Squirrel ◽  
Mitochondrial Control Region ◽  
Archaeological Site ◽  
Ground Squirrels ◽  
Vegetation Communities ◽  
Peace River ◽  
River Region ◽  
Urocitellus Richardsonii

Ancient DNA was extracted from 12 500 to 10 500 year old ground squirrel bones from Tse’K’wa, an archaeological site in the Peace River region of northeastern British Columbia, Canada. Analysis of mitochondrial DNA from seven individuals demonstrates that all are Urocitellus richardsonii (Richardson’s ground squirrel), a species not found in the region today. Phylogenetic and sequence analyses indicate these individuals share a previously undocumented mitochondrial control region haplotype that is most closely related to haplotypes observed in modern specimens from Saskatchewan and Montana. At the end of the Pleistocene these ground squirrels extended their range north and west into open vegetation communities that developed when ice sheets melted and glacial lakes drained. They were subsequently extirpated from the Peace River region when forests replaced earlier pioneering vegetation communities.

AMS-dated late Pleistocene taiga vole (Rodentia: Microtus xanthognathus) from northeast British Columbia, Canada: a cautionary lesson in chronologyThis article is one of a selection of papers published in this Special Issue on the theme Geology of northeastern British Columbia and northwestern Alberta: diamonds, shallow gas, gravel, and glaciers.

2008 ◽  
Vol 45 (5) ◽  
pp. 611-618 ◽  
Author(s):  
Richard J. Hebda ◽  
James A. Burns ◽  
Marten Geertsema ◽  
A. J. Timothy Jull
Keyword(s):  
British Columbia ◽  
Late Pleistocene ◽  
Bone Collagen ◽  
Laurentide Ice Sheet ◽  
Special Issue ◽  
Cautionary Note ◽  
Shallow Gas ◽  
Peace River ◽  
Elusive Species ◽  
Selection Of

Dissected colluvial sediments on a Peace River terrace at Bear Flat, northeast British Columbia enclosed a late Pleistocene micromammalian faunule. The fossil remains, including a few loosely articulated skulls and mandibles, were dominated by taiga voles ( Microtus xanthognathus ). The Bear Flat site constitutes the second fossil occurrence in the region of this elusive species, which is unknown in British Columbia in historic times. The late Pleistocene age, determined by accelerator mass spectrometry directly on taiga vole bone collagen, is consistent with the ages of widespread taiga vole records peripheral to the Laurentide ice sheet in western, mid-western, and eastern North America. The presence of allo-chronous remains within a comprehensively dated sedimentary sequence provides a cautionary note about straightforward acceptance of relative stratigraphic dating.

The influence of late pleistocene mountain glaciations on the genetic differentiation of long-tailed ground squirrel (Urocitellus undulatus)

2017 ◽  
Vol 53 (5) ◽  
pp. 614-622 ◽  
Author(s):  
E. P. Simonov ◽  
A. E. Dvilis ◽  
N. V. Lopatina ◽  
Yu. N. Litvinov ◽  
N. S. Moskvitina ◽  
...  
Keyword(s):  
Genetic Differentiation ◽  
Late Pleistocene ◽  
Ground Squirrel

New Source of Dietary Data for Extinct Herbivores

1988 ◽  
Vol 30 (1) ◽  
pp. 92-97 ◽  
Author(s):  
William A. Akersten ◽  
Theresea M. Foppe ◽  
George T. Jefferson
Keyword(s):  
Late Pleistocene ◽  
Indirect Evidence ◽  
Bison Bison ◽  
Large Herbivores ◽  
Usual Assumption ◽  
Microhistological Analysis ◽  
Rancho La Brea ◽  
Very High ◽  
Control Study ◽  
Dietary Data

The teeth of many large herbivores contain “pockets” (fossettes, fossettids, etc.) which entrap impacted samples of food (dental boluses) during mastication. These do not preserve well in most fossil deposits, but at Rancho La Brea, paleobotanical remains survive essentially intact and dental boluses from late Pleistocene forms are amenable to microhistological analysis. Of the identifiable bolus contents, those from Bison antiquus averaged 87% nonmonocotyledons; from Camelops hesternus, 90% nonmonocotyledons; and from Equus occidentalis (one specimen), 56% nonmonocotyledons. A control study on modern Bison bison shows that the boluses contain somewhat lower percentages of monocotyledons than do alimentary samples from the same individuals. However, this accounts for only a part of the very high percentage of nonmonocotyledons in the boluses of the extinct Bison. We conclude that the populations of B. antiquus and C. hesternus represented at Rancho La Brea probably fed little on grasses and that there is enough indirect evidence to suggest that the same may be true for other populations of these taxa. The Equus data are not sufficient to do more than question the usual assumption that Pleistocene horses were always obligate grass eaters.

scholarly journals Northern Goshawk, Accipiter gentilis, Exploits a Beagle Hound, Canis familiaris, as a "Beater" to Catch a Snowshoe Hare, Lepus americanus

2007 ◽  
Vol 121 (3) ◽  
pp. 329
Author(s):  
John T. Neville
Keyword(s):  
Canis Familiaris ◽  
First Record ◽  
Lepus Americanus ◽  
Accipiter Gentilis ◽  
Snowshoe Hare ◽  
Northern Goshawk

During a winter Snowshoe Hare (Lepus americanus) hunt with a beagle hound (Canis familiaris), I observed an adult Northern Goshawk (Accipiter gentilis) exploiting the running, barking hound as a “beater” and use strategic locations for attacks. The hawk made three attacks on a hare being pursued by the hound, and subsequently caught and killed it. To my knowledge, this report represents the first record of a Northern Goshawk using this behavior to capture prey.

scholarly journals Butterflies of the Peace River Region of Alberta and British Columbia

Blue Jay ◽  
1994 ◽  
Vol 52 (2) ◽  
Author(s):  
Norbert G. Kondla ◽  
Edward M. Pike ◽  
Felix A. H. Sperling
Keyword(s):  
British Columbia ◽  
Peace River ◽  
River Region

First Complete Skull of a Late Pleistocene Steppe Bison (Bison priscus) in the Iberian Peninsula

Ameghiniana ◽  
2016 ◽  
Vol 53 (5) ◽  
pp. 543-551
Author(s):  
Jone Castaños ◽  
Pedro Castaños ◽  
Xabier Murelaga
Keyword(s):  
Iberian Peninsula ◽  
Late Pleistocene ◽  
Bison Bison ◽  
Steppe Bison ◽  
Bison Priscus
Sign in / Sign up

Export Citation Format

Share Document