scholarly journals Conservation Evaluation of Pacific Rhododendron, Rhododendron macrophyllum, in Canada

2006 ◽  
Vol 120 (2) ◽  
pp. 169
Author(s):  
George W. Douglas ◽  
Julie Desrosiers
Keyword(s):  
At Risk ◽  
British Columbia ◽  
Protected Areas ◽  
Vancouver Island ◽  
Coniferous Forests ◽  
Northern California ◽  
River Watershed ◽  
River Drainage ◽  
Skagit River ◽  
Conservation Evaluation

In Canada, Pacific Rhododendron (Rhododendron macrophyllum) is restricted to the Skagit River drainage and southeastern Vancouver Island in southwestern British Columbia. These populations represent the northern limits of the species, which ranges south to northern California. In British Columbia, Rhododendron macrophyllum is usually associated with coniferous forests. Until recently this species was considered to be rare. Results of this study indicate that the populations in the Skagit River watershed are large, extensive and mostly contained in protected areas, thus the species is not considered to be at risk in Canada at this time.

scholarly journals Conservation Evaluation of the Pacific Population of Tall Woolly-heads, Psilocarphus elatior, an Endangered Herb in Canada

2004 ◽  
Vol 118 (2) ◽  
pp. 169
Author(s):  
George W. Douglas ◽  
Jeanne M. Illingworth
Keyword(s):  
British Columbia ◽  
Vernal Pools ◽  
Vancouver Island ◽  
Pacific Population ◽  
Large Numbers ◽  
The Pacific ◽  
The Status ◽  
Conservation Evaluation

In Canada, Psilocarphus elatior occurs in British Columbia, Alberta and Saskatchewan. This paper examines the status of the Pacific populations located on southeastern Vancouver Island in southwestern British Columbia. The Pacific population consists of 12 recorded sites of which only five have been confirmed since 1993. In British Columbia, P. elatior is associated with dried beds of vernal pools and other open, moist depressions at lower elevations. In British Columbia, P. elatior populations occur in large numbers at only two of the seven locations.

scholarly journals Conservation Evaluation of Howell's Triteleia, Triteleia howellii, an Endangered Lily in Canada

2004 ◽  
Vol 118 (2) ◽  
pp. 174
Author(s):  
George W. Douglas ◽  
Jenifer L. Penny
Keyword(s):  
British Columbia ◽  
Introduced Species ◽  
Vancouver Island ◽  
Habitat Destruction ◽  
Range Limits ◽  
Quercus Garryana ◽  
Potential Threat ◽  
General Biology ◽  
Conservation Evaluation

In Canada, Triteleia howellii is restricted to Quercus garryana stands and grass-dominated meadows on southeastern Vancouver Island in southwestern British Columbia. Nine sites have been confirmed in recent years while three other sites are considered extirpated. These Canadian sites represent the northern range limits of T. howellii. Threats to existing populations vary in intensity. Although most populations are protected to a certain extent from direct habitat destruction, introduced species pose a serious potential threat to the continued existence of most populations. Managing sites for T. howellii is difficult because little information is available regarding the general biology of this species.

The plainfin midshipman’s soundscape at two sites around Vancouver Island, British Columbia

2018 ◽  
Vol 603 ◽  
pp. 189-200 ◽  
Author(s):  
WD Halliday ◽  
MK Pine ◽  
APH Bose ◽  
S Balshine ◽  
F Juanes
Keyword(s):  
British Columbia ◽  
Vancouver Island

scholarly journals Conservation Evaluation of Small-flowered Lipocarpha, Lipocarpha micrantha (Cyperaceae), in Canada

2004 ◽  
Vol 118 (2) ◽  
pp. 179
Author(s):  
Tyler W. Smith ◽  
George W. Douglas ◽  
Allan G. Harris
Keyword(s):  
British Columbia ◽  
Endangered Species ◽  
Water Level ◽  
Shoreline Development ◽  
Conservation Evaluation ◽  
Water Level Regulation

In Canada, Lipocarpha micrantha has been documented at eight locations in Quebec, Ontario, and British Columbia. Four of these populations have apparently been extirpated. The remaining populations, ranging from 120 to approximately 40000 plants, are all northern disjuncts from the main range of this species. Threats to these populations include water level regulation and shoreline development. Considering the threats to the habitat of Lipocarpha micrantha, and the small size of most of the remaining populations, it has been designated an Endangered species in Canada.

scholarly journals Conservation Evaluation of Lemmon's Holly Fern, Polystichum lemmonii, a Threatened Fern in Canada

2004 ◽  
Vol 118 (2) ◽  
pp. 164
Author(s):  
George W. Douglas
Keyword(s):  
British Columbia ◽  
Road Construction ◽  
Montane Forest ◽  
Mountain Area ◽  
Forest Road ◽  
South Central ◽  
Northern Idaho ◽  
Mining Exploration ◽  
Conservation Evaluation ◽  
Forest Road Construction

In Canada, Lemmon's Holly Fern, Polystichum lemmonii, is restricted to the Baldy Mountain area on the eastern side of the Okanagan River valley in south-central British Columbia. This population represents the northern limits of the species which ranges south through northern Idaho, Washington and Oregon to northern California. In British Columbia, P. lemmonii is associated with ultramafic rocky ridges within a montane forest at an elevation of 1900 m. The population in the Baldy Mountain area is relatively small, unprotected and potentially imperilled by mining exploration, forest road construction or wildfires.

scholarly journals Conservation Evaluation of the Pacific Population of Dwarf Woollyheads, Psilocarphus brevissimus var. brevissimus, in Canada

2006 ◽  
Vol 120 (2) ◽  
pp. 163
Author(s):  
George W. Douglas ◽  
Jenifer L. Penny ◽  
Ksenia Barton
Keyword(s):  
British Columbia ◽  
Coalbed Methane ◽  
Groundwater Levels ◽  
Gas Drilling ◽  
Pacific Population ◽  
South Central ◽  
The Pacific ◽  
Recreational Vehicles ◽  
Forest Openings ◽  
Conservation Evaluation

In Canada, Dwarf Woolly-heads, Psilocarphus brevissimus var. brevissimus, is restricted to the Similkameen River valley, south of Princeton in southwestern British Columbia and the extreme southeast and southwest corners of Alberta and Saskatchewan, respectively. This paper deals with the three British Columbia populations which represent the northwestern limit of the species which ranges from south-central British Columbia, southward in the western United States to Montana, Idaho, Washington, Oregon, Nevada, Utah, Wyoming, California and Baja California, Mexico. In British Columbia, P. brevissimus is associated with calcareous vernal pools and ephemeral pond edges in large forest openings. This habitat is rare in the area the few existing populations could easily be extirpated or degraded through slight changes in groundwater levels, coalbed methane gas drilling, housing development or recreational vehicles.

scholarly journals A rare genotype of Cryptococcus gattii caused the cryptococcosis outbreak on Vancouver Island (British Columbia, Canada)

2004 ◽  
Vol 101 (49) ◽  
pp. 17258-17263 ◽  
Author(s):  
S. E. Kidd ◽  
F. Hagen ◽  
R. L. Tscharke ◽  
M. Huynh ◽  
K. H. Bartlett ◽  
...  
Keyword(s):  
British Columbia ◽  
Vancouver Island ◽  
Cryptococcus Gattii
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