Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 42 for “"Mountain Pine Beetle"”.
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Mountain Pine Beetle Detection using IoT
… build and evaluate an IoT system for real-time Mountain Pine Beetle (MPB) infestation detection using bioacoustic recognition via deep learning techniques. First, we present the design of the IoT system and describe its various hardware and software components. We built our IoT device using LoRa …
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Soil weathering under mountain pine beetle killed trees, Grand County, Colorado
… differences in soil weathering processes under mountain pine beetle killed trees, as compared to soil weathering under living trees. As pine beetle (Dendroctonus pondersoae) infected trees die, pine needles are shed and accumulate on the forest floor, which may lead to changes in soil pH and …
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Timber supply and economic impact of mountain pine beetle salvage strategies
To address the scale mountain pine beetle (MPB) outbreak in British Columbia, salvage has become fully integrated with timber supply strategies. The objective of this thesis is to assess the economic impact of different salvage strategies depending on different attack levels, decay rates, and …
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Pathogenicity and taxonomy of fungi associated with the mountain pine beetle in British Columbia
The mountain pine beetle is associated with a diverse array of fungi. Grosmannia clavigera is the most pathogenic of these fungi. A comparison was made between two methods that have been used to assess fungal pathogenicity. Results were similar for older trees inoculated with G. clavigera using …
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MULTI-PARTNER MUTUALISMS: INTERACTIONS AMONG THE MOUNTAIN PINE BEETLE AND TWO OPHIOSTOMATOID FUNGAL ASSOCIATES
I investigated interactions between the mountain pine beetle (Dendroctonus ponderosae) and its two main ophiostomatoid fungal associates,Grosmannia clavigera and Ophiostoma montium, as well as interactions between the two fungi. The main research questions were: What drives bark beetle fungal …
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MULTI-PARTNER MUTUALISMS: INTERACTIONS AMONG THE MOUNTAIN PINE BEETLE AND TWO OPHIOSTOMATOID FUNGAL ASSOCIATES
I investigated interactions between the mountain pine beetle (Dendroctonus ponderosae) and its two main ophiostomatoid fungal associates,Grosmannia clavigera and Ophiostoma montium, as well as interactions between the two fungi. The main research questions were: What drives bark beetle fungal …
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Effect of tree mortality on biogeochemical response after mountain pine beetle forest infestation, The
Pine species in the American West are experiencing large-scale, bark beetleinduced mortality in association with a changing climate. As resulting terrestrial biogeochemical responses to this ecosystem disturbance are unclear, we hypothesized that a threshold of localized tree mortality must be …
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Forest recovery trends following an unprecedented mountain pine beetle outbreak in the southern Rocky Mountains
Following the mountain pine beetle (MPB) outbreak in the early 2000s in the southern Rocky Mountains, questions remain about what the structure and composition of lodgepole pine forests will look like as they recover. I used Forest Inventory and Analysis data collected by the US Department of …
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The effects of temperature on fungal symbionts in the mountain pine beetle-fungus multi-partite symbiosis
The mountain pine beetle is an economically and ecologically important insect in western North American forests capable of killing millions of trees during outbreaks. This beetle depends on two fungi, Grosmannia clavigera and Ophiostoma montium, to provide the nutrients required for the beetle to …
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Impacts of mountain pine beetle outbreak on biogeochemical cycling in a high elevation whitebark pine ecosystem
… but the effects of the current widespread mountain pine beetle outbreak on ecosystem processes like carbon (C) and nitrogen (N) cycling are poorly understood. This is especially true in high elevation whitebark pine (WbP) (Pinus albicaulis) ecosystems of western North America. WbP has been …
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The effects of temperature on fungal symbionts in the mountain pine beetle-fungus multi-partite symbiosis
The mountain pine beetle is an economically and ecologically important insect in western North American forests capable of killing millions of trees during outbreaks. This beetle depends on two fungi, Grosmannia clavigera and Ophiostoma montium, to provide the nutrients required for the beetle to …
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Impacts of mountain pine beetle outbreak on biogeochemical cycling in a high elevation whitebark pine ecosystem
… but the effects of the current widespread mountain pine beetle outbreak on ecosystem processes like carbon (C) and nitrogen (N) cycling are poorly understood. This is especially true in high elevation whitebark pine (WbP) (Pinus albicaulis) ecosystems of western North America. WbP has been …
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The Effect of Mountain Pine Beetle Induced Tree Mortality on Home Values in the Colorado Front Range
Throughout the past decade American pine forests have experienced an epidemic of Mountain Pine Beetle (MPB) induced tree mortality. This thesis estimates the losses to home values caused by deteriorating forest quality in the Front Range Counties of Larimer and Boulder Colorado. We employ a repeat …
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Changes in litter inputs and decomposition in headwater streams during a mountain pine beetle infestation of whitebark pine
… Ecosystem (GYE) a climate change induced mountain pine beetle (Dendroctonus ponderosae, MPB) outbreak has been decimating whitebark pine (Picea albicaulis, WbP) forests over an extremely short time period. Among the possible implications of widespread WbP die-off, I predicted an increase …
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Changes in litter inputs and decomposition in headwater streams during a mountain pine beetle infestation of whitebark pine
… Ecosystem (GYE) a climate change induced mountain pine beetle (Dendroctonus ponderosae, MPB) outbreak has been decimating whitebark pine (Picea albicaulis, WbP) forests over an extremely short time period. Among the possible implications of widespread WbP die-off, I predicted an increase …
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Management decision-making tools for mountain pine beetle (Dendroctonus ponderosae) (Coleoptera: Scolytidae) populations in lodgepole pine (Pinus contorta) stands
To prevent the buildup of epidemic level mountain pine beetle populations, conditions of the stand environment they inhabit must be altered. Silvicultural treatment is the most effective means for doing this. Preventative treatments work best when applied while mountain pine beetle populations are …
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Mite and fungal associates on mountain pine beetles attacking three pines species in northern Colorado
During its life cycle, mountain pine beetle (Dendroctonus ponderosae) interacts with phoretic organisms such as mites, nematodes, fungi, and bacteria. The types of associations these organisms establish with the mountain pine beetle vary from mutualistic to antagonistic. The most studied of these …
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Biophysical and Climate Analysis of the Mountain Pine Beetle (Dendroctonus ponderosae) Infestations in the Crown of the Continent, 1962 to 2014
Mountain pine beetles (Dendroctonus ponderosae) are native insects that have decimated millions of hectares of mature pine (Pinaceae) forests in western North America. The purpose of this study is to investigate biophysical and climatic correlates of Mountain Pine Beetle (MPB) insect outbreaks in …
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