Persistence and retention of active ingredients in four granular cholinesterase-inhibiting insecticides in agricultural soils of the lower Fraser River valley, British Columbia, Canada, with implications for wildlife poisoning

2002 ◽  
Vol 21 (2) ◽  
pp. 260-268 ◽  
Author(s):  
Laurie K. Wilson ◽  
John E. Elliott ◽  
Robert S. Vernon ◽  
Barry D. Smith ◽  
Sunny Y. Szeto
Keyword(s):  
British Columbia ◽  
Agricultural Soils ◽  
River Valley ◽  
Fraser River ◽  
Active Ingredients

RECORDS OF ADDITIONAL EUROPEAN SAWFLIES IN AMERICA AND DESCRIPTIONS OF NEW VARIETIES OF NORTH AMERICAN SPECIES

1932 ◽  
Vol 64 (11) ◽  
pp. 247-251 ◽  
Author(s):  
Herbert H. Ross
Keyword(s):  
British Columbia ◽  
North American ◽  
West Coast ◽  
River Valley ◽  
North American Species ◽  
Alnus Rubra ◽  
Fraser River ◽  
The West ◽  
New Varieties ◽  
The Common

This species has apparently been introduced in recent years and become established as a pest of the common native alder (Alnus rubra) on the west coast of Washington and British Columbia, particularly in the lower part of the Fraser River Valley. The earliest specimens I have at hand are a series of 15 females taken at White Rock, B. C., June 28, 1929, collected by Mr. G. Beall.

Effects of agricultural runoff on native amphibians in the Lower Fraser River Valley, British Columbia, Canada

2002 ◽  
Vol 21 (2) ◽  
pp. 353-360 ◽  
Author(s):  
Shane R. de Solla ◽  
Karen E. Pettit ◽  
Christine A. Bishop ◽  
Kimberly M. Cheng ◽  
John E. Elliott
Keyword(s):  
British Columbia ◽  
Agricultural Runoff ◽  
River Valley ◽  
Fraser River

Underground Houses on the British Columbian Coast

1944 ◽  
Vol 9 (3) ◽  
pp. 265-270 ◽  
Author(s):  
H. G. Barnett
Keyword(s):  
British Columbia ◽  
Bering Sea ◽  
Pacific Coast ◽  
River Valley ◽  
Fraser River ◽  
Northern California ◽  
The South ◽  
The North ◽  
The Pacific ◽  
The Way

Semi-Subterranean houses with an entrance through the roof are a well known feature of the interior of British Columbia, having been described for the Thompson, the Chilcotin, the Shuswap and others of the upper Fraser River valley. They have, in fact, an even wider distribution east of the Coast and Cascade Ranges, extending south over the Plateau and into northern California. Although this type of dwelling existed among the Aleuts, it appears that the coastal people to the south of them, even in Alaska, were either unfamiliar with the pattern or rejected it in favor of others. Sporadically, along the Pacific Coast all the way from California to Bering Sea, house floors were excavated to varying depths, sometimes even to two levels; but, everywhere, the houses characteristically lack the roof entrance and, except for sweathouses in the south and Bering Sea Eskimo dwellings in the north, even the idea of an earth covering is absent. In view of this fundamental divergence, it is interesting that subterranean structures do appear in several places on the coast of British Columbia.

Movement, Power and Place: The Biography of a Wagon Road in a Contested First Nations Landscape

2015 ◽  
Vol 25 (2) ◽  
pp. 417-434 ◽  
Author(s):  
Erin Gibson
Keyword(s):  
British Columbia ◽  
First Nations ◽  
Gold Rush ◽  
River Valley ◽  
Fraser River ◽  
The Road ◽  
Archival Documents ◽  
Human World ◽  
Colonial Encounter ◽  
Multiple Lives

This paper explores the biography of a wagon road located in the First Nations (indigenous) territory of the Stl'atl'imx of the lower Lillooet River Valley in southern British Columbia, Canada. While the road is best known as a route to the Fraser Canyon during the Fraser River Gold Rush of 1858, here I investigate its multiple lives. Adopting themes from symmetrical archaeology, I show that the wagon road was not a passive outcome of colonial action but instead shifted in form and meaning as it interacted with the human and non-human world. I draw on archival documents from the Royal Engineers and oral accounts from the Stl'atl'imx of the lower Lillooet River Valley to illustrate how people, places and things were woven into the landscape through bodily engagement with the road. This paper thus highlights the complexity of the colonial encounter and the importance of movement and the materiality of movement (roads) in understanding the diversity of interaction in tensioned landscapes.

scholarly journals A huge flood in the Fraser River valley, British Columbia, near the Pleistocene Termination

Geomorphology ◽  
2021 ◽  
Vol 374 ◽  
pp. 107473
Author(s):  
John J. Clague ◽  
Nicholas J. Roberts ◽  
Brendan Miller ◽  
Brian Menounos ◽  
Brent Goehring
Keyword(s):  
British Columbia ◽  
River Valley ◽  
Fraser River

XIPHINEMA BAKERI N. SP. (NEMATODA: LONGIDORINAE) FROM THE FRASER RIVER VALLEY, BRITISH COLUMBIA, CANADA

1961 ◽  
Vol 39 (4) ◽  
pp. 407-412 ◽  
Author(s):  
T. D. Williams
Keyword(s):  
British Columbia ◽  
River Valley ◽  
Fraser River ◽  
The South

Xiphinema bakeri n. sp. is described from soil associated with the roots of raspberry and strawberry plants. The specimens were collected near Hatzic, in the South Fraser River Valley, British Columbia. This species most closely resembles X. index Thorne and Allen, 1950, but is distinguished from the latter by its greater length, longer spear, more anteriorly placed vulva, and the presence in the female of only two pairs of caudal pores.

Studies on the Silver-spotted Tiger Moth, Halisidota argentata Pack. (Lepidoptera: Arctiidae), in British Columbia

1958 ◽  
Vol 90 (2) ◽  
pp. 65-80 ◽  
Author(s):  
G. T. Silver
Keyword(s):  
British Columbia ◽  
Vancouver Island ◽  
Douglas Fir ◽  
River Valley ◽  
Fraser River ◽  
Natural Control ◽  
Control Factors ◽  
Single Colony ◽  
Tiger Moth ◽  
Northern Portion

The silver-spotted tiger moth, Halisidota argentata Pack., is a potentially dangerous defoliator of Douglas fir in British Columbia. Natural control factors have always prevented populations from building up to destructive proportions.The literature contains little information on this insect. Fletcher recorded the first outbreak of what was probably H. argentata in British Columbia in 1887 (2). Moths were identified as H. sobrina Stretch, but this form is now recorded only from California so it was probably H. argentata. The outbreak, probably on southern Vancouver Island, was reported as “committing great depredations on the spruces here.” Mathers found H. argentata at Chilliwack in the Fraser River Valley in 1934, but there was no report of an outbreak (4). A few larvae were collected on southern Vancouver Island from 1936 to 1952. In 1953 a considerable number of colonies were observed, and the following year the silver-spotted tiger moth was in infestation proportions. In 1955 the outbreak increased in intensity, and spread northward to the limit of its known range. A survey in the spring of 1956 failed to find a single colony south of Lantzville, and the population in the northern portion of the range was greatly reduced.

scholarly journals Kleptoparasitism by Bald Eagles (Haliaeetus leucocephalus) as a factor in reducing Peregrine Falcon (Falco peregrinus) predation on Dunlin (Calidris alpina) wintering in British Columbia

2015 ◽  
Vol 129 (2) ◽  
pp. 159 ◽  
Author(s):  
Dick Dekker ◽  
Mark C. Drever
Keyword(s):  
British Columbia ◽  
River Valley ◽  
Bald Eagle ◽  
Haliaeetus Leucocephalus ◽  
Peregrine Falcon ◽  
Fraser River ◽  
Falco Peregrinus ◽  
Bald Eagles ◽  
Calidris Alpina ◽  
Peregrine Falcons

Kleptoparasitism, or food piracy, is common in a wide range of taxa, particularly among predators, with the larger species forcing smaller species to surrender their catch. The Bald Eagle (Haliaeetus leucocephalus) is known to rob Peregrine Falcons (Falco peregrinus) of just-caught prey. We present time series of kleptoparasitic interactions between eagles and peregrines hunting Dunlin (Calidris alpina) that were wintering at Boundary Bay in the Fraser River valley, British Columbia. In 1108 hours of observation during January, intermittently between 1994 and 2014, we recorded 667 sightings of Peregrine Falcons, including 817 attacks on Dunlin resulting in 120 captures. The population of wintering Bald Eagles in the study area increased from about 200 in 1994 to 1800 in 2014, while the rate of kleptoparasitism at the expense of peregrines increased from 0.05 to 0.20. The increase in the number of Bald Eagles coincided with a decline in January sightings of Peregrine Falcons, which suggests that some falcons may have left the study area because of interference from eagles. The decrease in Peregrine Falcon numbers can be expected to have led to reduced predation risk for Dunlins. Christmas Bird Counts conducted in the Fraser River Valley have underscored the fluctuation in eagle and peregrine numbers reported here.

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