The result showed that if there will be no beetle outbreaks and additional harvest that amount of carbon in the ecosystem will sink while if the trend continues, the amount of carbon in the atmosphere will further Pine beetle essay and the regeneration of the forest would be slow. This will call upon diversification based on the products produced from the harvested wood as well as prevent the flooding of the timber on the market.
The insect outbreak reduces the capacity of the forest to take up carbon and further adds to the amount of carbon to the atmosphere through decay. It is in this species that the beetle develops the most extensive outbreaks Safranyik and Carroll, Even windbreak or landscape pines many miles from the mountains can succumb to beetles imported in infested firewood.
This situation is in stark contrast with most populations of D. In general, MPB prefers forests that are old Pine beetle essay dense. Conclusion The article was effective in communicating its finding. Nonetheless, the article only study a part of the Canadian forest and one insect species, thus a comparative study can be done to support the conclusion by addressing the possible impact of other insect outbreaks Forestry Commission, and Bue et al.
In the multivoltanism approach the cases of understanding the problems change, hence for this case, the policy concentration focus has been shifted from the bid of trying to control the infestation to trying to minimize the losses of timber resources in the process of maintaining revenues for the communities, industries and the government without any compromise of other social, economic and environmental factors.
This is a way for the insects to reduce competition for resources. This clearly explains why there will be a significant back drop of the harvest levels once the susceptible trees are salvaged for timber hence having a direct impact on the dependent communities.
Once initiated, outbreaks can continue even with an alleviation of drought, and collapse often occurs more in response to host depletion than to changes in climate and weather.
According to the article by Kurz et al,the warmer climate increases the population of the beetles and further extends the territory that the outbreaks cover. Females initiate mass attacks in mid-summer although there is considerable variability in flight periods at different elevations Amman, Climate change affects bark beetles by altering their development and temperature-induced mortality.
Therefore we are sustained by the natural resources from the forest and it is our duty in appreciation, to tender the nature in relation to the forest values. Dendroctonus ponderosae colonizes all native pines within its range except P. For winter mortality to be a significant factor, a severe freeze is necessary while the insect is in its most vulnerable stage; i.
All development occurs in the phloem Wood, Extreme cold temperatures also can reduce MPB populations. The overall thermal history experienced by the larvae, as well as daily changes in temperature, is an important factor influencing the cold-hardening process and the degree of supercooling ability that is achieved.
The article started by showing the fact that insect outbreaks may increase the amount of carbon in the atmosphere. Once beetle numbers surpass a threshold over which they are able to kill healthy trees, tree defenses become inconsequential and the beetle switches to preferring healthy trees, likely due to their superior qualities for supporting brood.
In side view, it is gradually curved. This is to ensure that the salvaged timber under any circumstances will retain its economic value on the market and the income for the communities. Retrieved on November 14,from http: Managing the forest by creating diversity in age and structure with result in a healthy forest that will be more resilient and, thus, less vulnerable to MPB.
Experimental crosses of beetles from populations around the horseshoe revealed the existence of cryptic postzygotic isolation involving hybrid male sterility. This protects high-value trees and should be done annually between April 1 and July 1.
Impact of management on beetle outbreaks: Prevention An important method of prevention involves forest management. Genetic differences in development and size have also been noted for northern vs. Mountain pine beetles develop in pines, particularly ponderosa, lodgepole, Scotch and limber pine. The expansion on territory also marks a greater impact to the net carbon.
Larvae progressively gain cold tolerance in response to decreasing temperatures in fall and early winter Bentz and Mullins, The study by Lester and Irwin indicates that diapause has evolved in adults that have already produced brood, which seems counterintuitive in terms of natural selection and the prevailing manner in which most populations of this beetle overwinter.
The outbreak caused by the mountain pine beetle results to death of the host trees, at times it creates a major damage on the tree that reduces its growth.
Bark beetles help shape forest structure and composition and influence forest productivity and biogeochemical cycling i.Western Bark Beetle Research Group—A Unique Collaboration with Forest Health Protection and the collection of papers in this Proceedings of that session, we describe the current trends in bark beetle-caused tree mortality in western forests.
The mountain pine beetle is a small but effective disturbance agent in western forests. A number of native bark beetles can cause tree mortality in western forests and urban environments.
These insects have co-evolved over thousands of years with their host. Climate change and the effects pine beetles have on the forests. Introduction. The ever growing effects of natural and man-made climate change are having a wide-spread effect on many mixed and coniferous forest ecosystems. More Essay Examples on Climate Rubric.
Kurz, Dymond, Stinson, Ramley, Nellison, Carroll, Ebata and Safranyik (), conducted a research case study on how an insect outbreak, such as the mountain pine beetle affects the forest carbon’s feedback to climate change.
Despite the diversity of beetle species and forest types at risk (Table 1), the majority of modelling efforts have centred on a few bark beetles in spruce and pine systems. Below is an essay on "Mountain Pine Beetle Epidemic" from Anti Essays, your source for research papers, essays, and term paper examples.
The mountain pine beetle epidemic is causing environmental and social impacts to much of British Columbia.Download