1977 spruce budworm situation in Ontario by G. M. Howse Download PDF EPUB FB2
The history of spruce budworm area defoliated in Quebec, Canada The province-wide time series in the far right column has been divided to create two additional, shorter series, and all.
Spruce budworm outbreaks have a long history in eastern Canada (defined here as Canada east of Georgian Bay [of Lake Huron], including eastern Ontario, Quebec, New Brunswick, Nova Scotia, and Newfoundland), as evidenced by dendrochronological analyses of ancient timber, far preceding the advent of broad-scale forestry practices (reviewed in Cited by: Book contents; Pesticide Management and Insecticide Resistance.
Pesticide Management and Insecticide Resistance. Pages Fate of Fenitrothion in Forest Trees VI. Some Factors Affecting Rate of Dissipation from Balsam Fir and White Spruce Harnden, A. A., and Sippel, W. The spruce budworm situation in Ontario. Environ Cited by: 2. Johnson, P.
C., and Denton, R. E.,Outbreaks of the western spruce budworm in the American northern Rocky Mountain Area from throughU.S.
Forest Service, General Technical Report INT Google ScholarCited by: 1. Landscape host abundance and configuration regulate periodic outbreak behavior in spruce budworm (Choristoneura fumiferana Clem.) Article (PDF Available) in Ecography November with Reads.
The spruce budworm (Choristoneura fumiferana) is a major insect defoliator of softwood species in northeastern North commercial importance stems from periodic epidemics during which it damages extensively the spruce and fir on which the pulp and paper industry depends.
A comprehensive evaluation of spruce-fir growth and yield in Maine as related to physical and chemical soil properties. Ph.D. thesis, University of Maine, Orono, Maine. Ph.D. thesis, University of. Aerial applications of a registered formulation of synthetic spruce budworm female sex pheromone were made inand to disrupt mating in populations of this forest insect pest in Quebec, Canada.
Each year, the applications resulted in a 90% reduction in captures of male spruce budworm moths in pheromone-baited traps. A commensurate reduction in mating success among virgin females.
spruce budworm outbreaks would play a major role in stand dynamics when balsam fir and white-cedar grow together. Growth responses to natural disturbances for white-cedar were smaller in the PL site, although site conditions were quite similar and climate.
Brian Stocks Publications. Publications in refereed journals; Book Chapters. 1977 spruce budworm situation in Ontario book in refereed journals.
Lavoué, D, and Stocks, B.J. Emissions of. The spruce budworm infestation began around and by not only Maine, but “the entire region from Ontario to Newfoundland was involved in the largest spruce budworm outbreak ever recorded,” according to The Spruce Budworm Outbreak in Maine in the s. Maine poured countless hours and millions of dollars into efforts to combat it.
Rabbit Team, Juniper, NB, L to R: Claude Marcoux (Lead TBM pilot), John Lavigne (#3 TBM pilot), Barry Paton (#2 TBM pilot) in front of Maritime AS # FXOM. This is the second edition of Don Henry’s “Pilots – Years Worked” list. I have added names and initials where available, but for many there is no information, especially from the early sixties.
spruce budworm forests shade resin aphid hosts forest insects larval cone pinus douglas predators density sawfly balsam bark beetles fungi insecticides Post a Review You can write a book review and share your experiences.
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Stocks BJ () The wildfire situation in northwestern Ontario. Can For Serv Great Lakes For Cent Sault Ste Marie ON Inf Rep O-X Google Scholar Stocks BJ. Unlike fire, which kills all or most overstory conifers, eastern spruce budworm outbreaks tend to reduce balsam fir cover over that of black spruce or white spruce [,].
Among eastern spruces and firs, black spruce is considered the least susceptible to eastern spruce budworm attacks, followed by red spruce, white spruce, and balsam. Outbreaks of Lambdina fiscellaria lugubrosa in British Columbia have always been preceded by a rapid population growth.
Sampling methods and population prediction models are needed to provide forest managers with the capability of monitoring and predicting populations of the insect.
I sampled eggs, larvae, pupae and adults of Lambdina fiscellaria lugubrosa at various locations in the province. By comparison, spruce budworm infestations destroy an average ofhectares ( million acres) per year, and logging accounts for abouthectares (2 million acres).
By the early s, lumberjacks and lumber mills had moved west, because they had logged Great Lakes forests. Bird species that depend on grassland and shrubland have declined in many regions in eastern and central North America during the past century, and open-country species frequently outnumber woodland species on state lists of endangered and threatened species (Askins ).Grassland birds, in particular, appear to be in trouble; during the past 25 years they have shown “steeper, more.
Franklin S, Remote sensing in integrated forest pest management with special reference to the eastern spruce budworm. In: Proceedings Eastern Spruce Budworm Work Conference, St. John’s, NF, April, Franklin S, Hudak J, Classification of hemlock looper defoliation from satellite imagery.
In the spring offour Cansos were flown by No. (Ferry) Squadron to spray against the Spruce Budworm infection in Cada's forests.
One of these aircraft, was also operated in the spring of under civil registration CF-OBK. Aerial control programs against the spruce budworm were carried out between andand against the hemlock looper again between and Those efforts combined with the weather and natural control agents contributed to the collapse of those outbreaks.
Spruce budworms handbook: regional evaluation of B.t. for spruce budworm control. () AIB Stall barns for dairy cattle. () AIB States' role in the cooperative state-federal research system for agriculture and forestry.
() AIB A statistical summary of farm tenure, () AIB ABSTRACTBroadening contingents of ecologists and environmental scientists have recently begun to promote ecological resilience both as a conceptual framework and as a practical goal.
As some critics have noted, this growing interest has brought with it a multiplication of notions of ecological resilience.
This paper reviews how and why the notion of ecological resilience has been adopted, used. The Quaternary. The region presently occupied by Canada’s boreal zone has experienced dramatic changes during the past 3 million years.
During the Quaternary, major glacial cycles in the northern hemisphere began to affect this region about million years ago (Shackleton et al. ; Balco et al. ; Herbert et al. ).Between million and 1 million years ago, 35–40. Evening Grosbeak populations fluctuate with spruce budworm outbreaks and populations have declined as the effort to control spruce budworms has succeeded.
However, in the past few years the return of spruce budworm outbreaks to Vermont has increased the breeding success of Evening Grosbeaks. As David Quammen reminds us in his excellent book. Southern Ontario, for example, has 56% of the class-1 land in Canada, while Saskatchewan has 25%; Alberta, 14%; and Manitoba, 4%.
Unfortunately, some of the best-quality land has been lost to urbanization, which swallowed up 7, km2 of prime agricultural land between andmore than doubling the total amount lost to this process.
The spruce budworm and larch sawfly [electronic resource]: lecture delivered by Dr. Gordon Hewitt, F.E.S., Dominion entomologist at the Canadian Forestry Convention, city of Québec, 19th January, ([Kingston, Ont.: British Whig, ]), by C.
Gordon Hewitt (page images at HathiTrust; US access only). Forest insects and diseases active in immature interior spruce stands in the central interior of British Columbia and their possible implications in forest management practices have been surveyed.
Collection records, spanning the period tofrom the Forest Insect and Disease Survey of the Canadian Forestry Service were reviewed for the Prince George Timber Supply Area and the pest. This chronology is presented in four versions so that you may choose according to your interests.
The long version contains all entries, the short version is a knock-down version of the long one, and the wilderness management and natural history versions contain entries specific to those topics.
The Boundary Waters Canoe Area Wilderness is a million acre wilderness located in northeastern. Feeding habits, post-embryonic and adult survival, mating, virility Rearing the tobacco budworm, Heliothis virescens, and the corn earworm, Heliothis zea, pp.
The European spruce sawfly in Ontario, to The 21 simulation modelling workshops in which I participated as a programmer covered topics such as mallard ducks, caribou, the proposed James Bay (Quebec) hydroelectric project, the Mackenzie River basin, the spruce budworm insect pest, Beaufort Sea Lagoon, Pacific salmon, and fishing fleets.The Math Book features both the Rubik's Cube and the fractal Menger Sponge.
Here is a Menger sponge: My favorite combination of the Rubik's Cube and Menger Sponge, far too difficult for any human to solve, is the "Menger Rubik's Cube," pictured at right, by Petter Duvander. You can learn more about this "Mengerubik Cubesponge" here.