Vancouver Island, Western Canada and the Outside World

1956 ◽  
Vol 13 (4) ◽  
pp. 541-546 ◽  
Author(s):  
E. Berkeley ◽  
C. Berkeley

Records are given of two species and a variety new to western Canada and notes on three other species already known from the region. A new species, Aricidea lopezi, and four species new to western North America, are described from the neighbourhood of Friday Harbour, Washington.


1957 ◽  
Vol 35 (3) ◽  
pp. 349-375 ◽  
Author(s):  
Glenn E. Rouse

A new system of nomenclature is proposed with the purpose of presenting a scheme which will be applicable to spores, pollens, and other microfossils from all geological ages. A review of previous nomenclatural systems is presented to indicate the historical development of microfossil nomenclature. The applicability of the new system is illustrated by naming 21 new species and four new genera of Upper Cretaceous microfossils from the Comox formation of Vancouver Island and the Oldman formation of southern Alberta. The microfossil conspecti are briefly compared with the assemblage previously reported from the Brazeau formation of western Alberta. Advantages of the new nomenclatural scheme are discussed in the light of future discoveries of plant microfossils, and their application to palaeobotanical and geological problems.


2018 ◽  
Vol 100 (1) ◽  
pp. 44-68
Author(s):  
Stacey L. Smith

In 1857, hundreds of black Californians migrated to western Canada, where they sought to become naturalized British subjects. In less than a decade many of them returned to California. They were propelled, in the first instance, by the Dred Scott v. Sandford (1857) ruling that U.S.-born African Americans were not citizens, and in the second instance by the Fourteenth (1868) and Fifteenth (1870) Amendments that reversed Dred Scott and promised voting rights. The article explores the reasons for Vancouver Island’s racial liberalism and its initial acceptance and later political reversal of African American settlers’ rights. In the long run, this pair of transnational migrations illuminate the significant roles of African Americans in shaping the course of westward expansion of both California and Vancouver Island.


1985 ◽  
Vol 42 (10) ◽  
pp. 1614-1626 ◽  
Author(s):  
S. J. Westrheim ◽  
R. P. Foucher

Trawling effort was standardized by horsepower class for Canadian trawlers landing Pacific Cod (Gadus macrocephalus) and its two principal shelf cohabitants during April–September 1960–81 from the three major offshore regions: southwest Vancouver Island, Queen Charlotte Sound, and Hecate Strait. A linear relationship was demonstrated between landings-per-hour-trawled (LPUE) and vessel horsepower class, with respect to appropriate shelf species groups in each region. Efforts to calculate relative fishing power (RFP) with respect to individual species were frustrated, for one species, by differential depth distribution of effort and abundance. With respect to Pacific cod in northern Hecate Strait, nominal LPUE was shown to underestimate abundance during the 1960s and overestimate abundance in the late 1970s.


2006 ◽  
Vol 120 (4) ◽  
pp. 421
Author(s):  
G. F. Hanke ◽  
M. C. E. McNall ◽  
J. Roberts

In Canada, there are no native catfish west of the continental divide and until recently, the list of extant exotic catfishes in British Columbia only included introduced Black Bullhead (Ameiurus melas) and Brown Bullhead (Ameiurus nebulosus). We report that a single Yellow Bullhead (Ameiurus natalis) was collected from Silvermere Lake in the Lower Fraser River drainage. This represents the first record of the Yellow Bullhead in western Canada, and its introduction likely was accidental with a shipment of Largemouth Bass (Micropterus salmoides) rather than dispersal from Washington. Warm, eutrophic, weedy habitat in the Fraser Delta provides ample habitat for Yellow Bullheads and other exotic fishes. A Blue-eyed Panaque (Panaque suttonorum), a loricariid catfish found in 1995 in Shawnigan Lake, Vancouver Island, probably represents a single, illegally released aquarium fish, as does a large Silver Pacu (Piaractus cf. P. brachypomus), which was found in Green Lake on Vancouver Island in 2004.


1978 ◽  
Vol 15 (7) ◽  
pp. 1170-1193 ◽  
Author(s):  
W. G. Milne ◽  
G. C. Rogers ◽  
R. P. Riddihough ◽  
G. A. McMechan ◽  
R. D. Hyndman

The seismicity of western Canada has been studied for the period 1899–1975. The quality of the data collected improved through this period as the number of recording stations increased and the location and analysis methods developed, but significant uncertainties and biases remain. Although these restrictions limit detailed correlation of seismic events with specific tectonic features, in general the most active earthquake areas correspond to the boundaries between the major lithospheric plates. These are the Queen Charlotte – Fairweather fault system (Pacific–America plates), the offshore ridge-fracture zone system (Pacific – Juan de Fuca plates), and the Vancouver Island – Puget Sound region (Juan de Fuca – America plates). Strain release calculations show that most seismic energy is released along the Queen Charlotte – Fairweather fault system and that at present a significant accumulation of strain may be available for release as earthquakes in the Vancouver Island – Puget Sound area. Except for the absence of thrust earthquakes along the apparently converging margin, focal mechanisms are in good agreement with the postulated plate motions. The b values in the frequency–magnitude recurrence relation for different areas within the region range from 0.65 to 0.82.


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