14:13So, remember I said earlier that I hoped that my research, my discoveries would change the way we practice forestry. Well, I want to take a check on that 30 years later here in western Canada. 14:33This is about 100 kilometers to the west of us, just on the border of Banff ...
A 21-year-old woman who was planting trees was seriously injured by a bear in western Canada in what authorities have called a "defensive attack." The attack happened shortly after 3 p.m. on Thursday near Bearhole Lake Provincial Park outside of Tumbler Ridge, a small town in northeastern...
Cruickshank MG, Cameron IR, Groot A, Stewart JD, Goudie JW (2015) Models of the vertical distribution of Sapwood Area for Lodgepole Pine and Western Hemlock in Western Canada. Forest Science 61(6):973–987. https://doi.org/10.5849/forsci.14-206 Article Google Scholar Dean TJ, Long JN...
第三段Thewesternmonarchbutterflypopulationhasdecreasedbymorethan99percentsincethe1980s.AnothermonarchpopulationontheeasternsideoftheRockyMountainstravelsfromsouthernCanadaandthenortheasternUStospendthewinterinwesternMexico.(自20世纪80年代以来,西方帝王蝶的数量减少了99%以上。落基山脉东侧的另一个帝王种群从加拿大南部...
"A splendid book, comprehensive in a way that readily answers the questions I bring home from the field."---Paul J. Willis, Books and Culture "This guide is great for identifying trees throughout western Canada and the United States, particularly for botanists on the move."---Kimberly Goul...
Ecological and taxonomic trends in macrolepidopteran host plant selection Patterns of host plant use by larvae of macrolepidoptera feeding on trees and shrubs in Britain and Canada are examined. The incidence of polyphagous speci... JD Holloway,PDN Hebert - 《Biological Journal of the Linnean Societ...
Ambivalence of Canadians toward trees in the early 1800s due to numerous accidents and disasters encountered by the people involving trees; First attempt at timber management undertaken by the Canadian forest industry in ...
Response of bark beetles and their natural enemies to fire and fire surrogate treatments in mixed-conifer forests in western Montana Four treatments (control, burn-only, thin-only, and thin-and-burn) were evaluated for their effects on bark beetle-caused mortality in both the short-term ... ...
Since 2000, two dozen species of beetles have killed trees on nearly 85,000 square miles in the Western U.S. That's an area about the size of Utah. Beetles have killed nearly 80,000 square miles of forest in Western Canada. The outbreak stems from a combination of factors, including cr...
Alnus rubra, its Latin name, this deciduous tree can be identified by oval-shaped leaves with serrated edges and a defined tip, as well as rust-red bark. Mature red alders range from about 65 feet to 100 feet in height, and they are generally found in the western U.S. and Canada. ...