Reconnaissance between Atlin and Telegraph creeks, Cassiar District, British Columbia, north and south sheets

1926 ◽  
Author(s):  
W E Cockfield
Keyword(s):  
British Columbia ◽  
North And South

New Distribution Records of Reptant Decapod Crustacea, Including Descriptions of Three New Species of Pagurus, from the Waters Adjacent to British Columbia

1971 ◽  
Vol 28 (10) ◽  
pp. 1527-1544 ◽  
Author(s):  
Josephine F. L. Hart
Keyword(s):  
British Columbia ◽  
New Species ◽  
Hermit Crabs ◽  
Decapod Crustacea ◽  
Three New Species ◽  
Petrolisthes Cinctipes ◽  
First Time ◽  
North And South ◽  
New Distribution

Three hermit crabs, Pagurus caurinus, P. quaylei, and P. stevensae, from British Columbia are described as new. Calastacus quinqueseriatus Rathbun, Paguristes ulreyi Schmitt, Pagurus cavimanus (Miers), P. samuelis (Stimpson), Parapagurus pilosimanus Smith, Munidopsis quadrata Faxon, and Chionoecetes tanneri Rathbun have not been recorded from the area between 48° and 55°N and 123° and 135°W, and also show considerable extensions of the known ranges. Within the confines of the same area, Callianassa gigas Dana, Paguristes turgidus (Stimpson), Pagurus cornutus (Benedict), P. hemphilli (Benedict), Orthopagurus minimus (Holmes), Petrolisthes cinctipes (Randall), Sceleroplax granulata Rathbun, Pinnotheres pugettensis Holmes, P. taylori Rathbun, and Planes marinus Rathbun are reported with extensions to known ranges. Pagurus capillatus (Benedict), P. tanneri (Benedict), Paralomis verrilli (Benedict), and Lithodes couesi Benedict are recorded, apparently for the first time from British Columbia, although known from both north and south of this area.

Foraminifera of a Joli Fou Shale equivalent in the Lower Cretaceous (Albian) Hasler Formation, northeastern British Columbia

1985 ◽  
Vol 22 (9) ◽  
pp. 1299-1313 ◽  
Author(s):  
Kory R. Koke ◽  
C. R. Stelck
Keyword(s):  
British Columbia ◽  
Lower Cretaceous ◽  
Rocky Mountain ◽  
Sensu Stricto ◽  
Peace River ◽  
The North ◽  
North Side ◽  
Basal Portion ◽  
Peace River Arch ◽  
North And South

The discovery of the arenaceous foraminifer Haplophragmoides gigas Cushman in the Hudson Hope area of northeastern British Columbia indicates that the Early Cretaceous (Albian) Joli Fou Sea flooded around the north side of the Peace River Arch, making an embayment that penetrated as far west as the Rocky Mountain Foothills. The microfauna of 25 genera and 46 species of arenaceous foraminifers is illustrated carrying Bathysiphon spp., Hippocrepina sp., Hyperammina spp., Lituotuba? sp., Psammosphaera spp., Reophax spp., Ammodiscus spp., Glomospira sp., Miliammina spp., Psamminopelta spp., Trochamminoides sp., Haplophragmoides spp., Ammomarginulina sp., Ammobaculites spp., Haplophragmium spp., Trochammina spp., Textulariopsis sp., Pseudobolivina spp., Plectorecurvoides sp., Verneuilina sp., Gaudryina sp., Uvigerinammina sp., Gravellina sp., and Eggerella sp.The suite occurs in the lower part of the Hasler Shale of the Fort St. John Group about 10–20 m above beds carrying a microfauna of the Ammobaculites wenonahae Subzone (= Stelckiceras liardense ammonite Zone) present in the basal portion of the Hasler Shale. The Haplophragmoides gigas Zone sensu stricto is overlain by a sequence of silty beds (Viking equivalent?), which in turn is succeeded by the Miliammina manitobensis Zone microfauna. The H. gigas assemblage has both boreal and southern aspects, suggesting a mixing of the waters from north and south as the first expression of the Colorado Sea in earliest late Albian time. The assemblage is a deep neritic one and lacks any calcareous component. Diagnostic megafauna are lacking.

STUDIES OF WATERFOWL IN BRITISH COLUMBIA: PINTAIL

1944 ◽  
Vol 22d (3) ◽  
pp. 60-86 ◽  
Author(s):  
J. A. Munro
Keyword(s):  
British Columbia ◽  
Coastal Plain ◽  
Aquatic Insects ◽  
Spring Migration ◽  
Forage Crops ◽  
Scirpus Acutus ◽  
Nest Sites ◽  
Migration Data ◽  
Autumn And Winter ◽  
North And South

Dafila acuta is an abundant transient through British Columbia following routes along the outer coast, the inner coast, and the main north and south river systems of the interior. The spring migration takes place during March and April and is not protracted but the autumn migration is one of successive movements from mid-August to early December. The largest flight sometimes appears on the mainland coast in late October. Both northbound and southbound flocks concentrate on the Coastal Plain. The chief wintering grounds are in western Oregon and in California, the most densely populated nesting grounds in Alaska. Recoveries of banded birds have verified observational migration data and have shown also that many individuals use the same route in successive years, some arriving at a given point on approximately the same date. In British Columbia the principal nesting ground is the parklands of the Cariboo region and the peak of the spring migration is in late March or early April. Following its conclusion the residual population is scattered over a wide area characterized by grassland and many types of ponds and sloughs. Courtship is at its height in April and laying commences in May. Nest sites usually are dry and may be several hundred yards from the nearest water. The majority of young appear in June and are led by the females to meadows and marshes provided with adequate cover. The females remain with the brood and actively defend them during adolescence. Males leave the females when incubation begins and gather in small bands on water adjacent to the nesting grounds. Many migrate in advance of the flightless period. Downy young feed largely on the larvae of aquatic insects. The most important item in the diet of adults during autumn and winter is seeds of various meadow and aquatic plants. On the coast this element is characterized by Polygonaceae and Scirpus americanus, in the interior by Potamogetons and Scirpus acutus. Insects and animal matter generally constitute a less important food. The pintail is second to the mallard, Anas platyrhynchos, in economic importance and like it is a source of revenue to the Province. On the debit side the pintail causes some loss to agriculture by eating forage crops but this is not extensive and is amenable to control.

Evidence of Xyleborinus attenuatus (Blandford 1894) (Coleoptera: Curculionidae: Scolytinae: Xyleborini) populations in Quebec, Canada

2014 ◽  
Vol 94 (1) ◽  
pp. 8-12
Author(s):  
Valentin Popa ◽  
Claude Guertin ◽  
Robert Werbiski
Keyword(s):  
British Columbia ◽  
Nova Scotia ◽  
North America ◽  
South America ◽  
Ambrosia Beetle ◽  
Western Canada ◽  
Eastern Canada ◽  
North And South America ◽  
North And South

Six species of the genus Xyleborinus (Reitter 1913) have been reported in North America. Five of these species were introduced, and one species is considered native to North and South America. Xyleborinus attenuatus (Blandford 1894), which was introduced into the Americas from Asia, was first recorded in 1995 in western Canada, in the province of British Columbia, and then in 2007 in the province of Nova Scotia, in eastern Canada. In Quebec, X. attenuatus was initially recorded in 2009 based on a single captured specimen. In this study, we present additional evidence of the presence of this alien ambrosia beetle in Quebec, Canada.

Rb–Sr dates for granodiorite intrusions on the northeast margin of the Shuswap Metamorphic Complex, Cariboo Mountains, British Columbia

1977 ◽  
Vol 14 (7) ◽  
pp. 1690-1695 ◽  
Author(s):  
Lee C. Pigage
Keyword(s):  
British Columbia ◽  
Upper Jurassic ◽  
Upper Triassic ◽  
Time Interval ◽  
Metamorphic Complex ◽  
The North ◽  
Regional Deformation ◽  
Shuswap Metamorphic Complex ◽  
North And South ◽  
Provincial Park

Whole rock Rb–Sr dates of 138 ± 12 Ma (all five whole rocks) and 163 ± 7 Ma were obtained for granodiorite stocks in Wells Gray Provincial Park, Cariboo Mountains, British Columbia. These dates bracket the biotite K–Ar date of 143 ± 14 Ma determined previously by the Geological Survey of Canada. Two biotite – whole rock ± hornblende dates of 119 ± 11 Ma and 77 ± 20 Ma indicate isotopic resetting. Initial 87Sr–86Sr ratios vary from 0.7061 ± 0.0001 to 0.7103 ± 0.0002 for rock and mineral dates.When combined with field relations, these dates restrict regional deformation and metamorphism in this area to the time interval between Upper Triassic and Upper Jurassic. The resetting event was probably Eocene, as shown in other areas along regional strike to the north and south.

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