Search Results - "Negron, Jose F"

Mountain Pine Beetle in Colorado: A Story of Changing Forests by Negrón, José F, Cain, Bob

“…Abstract The mountain pine beetle (MPB) (Dendroctonus ponderosae) is one of the most prevalent disturbance agents in western conifer forests. It utilizes…”
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Effects of mountain pine beetle on fuels and expected fire behavior in lodgepole pine forests, Colorado, USA by Schoennagel, Tania, Veblen, Thomas T, Negron, José F, Smith, Jeremy M

“…In Colorado and southern Wyoming, mountain pine beetle (MPB) has affected over 1.6 million ha of predominantly lodgepole pine forests, raising concerns about…”
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Wildfire and spruce beetle outbreak have mixed effects on below‐canopy temperatures in a Rocky Mountain subalpine forest by Carlson, Amanda R., Sibold, Jason S., Negrón, José F.

“…Aim Fine‐scale topography and canopy cover can play an important role in mediating effects of regional‐scale climate change on the below‐canopy environment in…”
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Cultural Practices for Prevention and Mitigation of Mountain Pine Beetle Infestations by Fettig, Christopher J., Gibson, Kenneth E., Munson, A. Steven, Negrón, José F.

“…In recent years, the mountain pine beetle, Dendroctonus ponderosae Hopkins, has impacted >8.9 million hectares of forests in the western United States. During…”
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Mountain Pine Beetle, a Major Disturbance Agent in US Western Coniferous Forests: A Synthesis of the State of Knowledge by Negrón, José F., Fettig, Christopher J.

“…[...]aggregation pheromones are produced to attract other D. ponderosae to attack the tree in a process referred to as "mass attack." [...]utilization of…”
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Within-Stand Distribution of Tree Mortality Caused by Mountain Pine Beetle, Dendroctonus ponderosae Hopkins by Negrón, José F

“…The mountain pine beetle (MPB) ( ) is a bark beetle that attacks and kills ponderosa pine ( ), among other pine species throughout the western conifer forests…”
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The effectiveness of vegetation management practices for prevention and control of bark beetle infestations in coniferous forests of the western and southern United States by Fettig, Christopher J., Klepzig, Kier D., Billings, Ronald F., Munson, A. Steven, Nebeker, T. Evan, Negrón, Jose F., Nowak, John T.

“…Insects are major components of forest ecosystems, representing most of the biological diversity and affecting virtually all processes and uses. In the USA,…”
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Droughty times in mesic places: factors associated with forest mortality vary by scale in a temperate subalpine region by Harvey, Brian J., Andrus, Robert A., Battaglia, Mike A., Negrón, José F., Orrego, Alexandra, Veblen, Thomas T.

“…Understanding how drivers of ecological disturbance operate across scales is important in an era of increasing disturbance activity. Severe and extensive…”
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Can spruce beetle (Dendroctonus rufipennis Kirky) pheromone trap catches or stand conditions predict Engelmann spruce (Picea engelmannii Parry ex Engelm.) tree mortality in Colorado? by Negrón, José F., Popp, John B.

“…Bark beetles (Coleoptera: Curculionidae: Scolytinae) can cause extensive tree mortality in forests dominated by their hosts. Among these, the spruce beetle…”
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Biological Aspects of Mountain Pine Beetle in Lodgepole Pine Stands of Different Densities in Colorado, USA by José F. Negrón

“…Research Highlights: The biology of mountain pine beetle (MPB), Dendroctonus ponderosae Hopkins, in Colorado's lodgepole pine forests exhibits similarities and…”
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Mountain pine beetle-caused mortality over eight years in two pine hosts in mixed-conifer stands of the southern Rocky Mountains by West, Daniel R., Briggs, Jennifer S., Jacobi, William R., Negrón, José F.

“…•We surveyed mountain pine beetle attacks on alternative host species in mixed stands.•Average total mortality was 39% in both lodgepole and ponderosa pine…”
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The Once and Future Forest: Consequences of Mountain Pine Beetle Treatment Decisions by Gillette, Nancy E., Wood, David L., Hines, Sarah J., Runyon, Justin B., Negrón, José F.

“…Entomologists and silviculturists have long recommended management of stand basal area and/or mean tree diameter to mitigate the risk of mountain pine beetle…”
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Bark beetles and dwarf mistletoe interact to alter downed woody material, canopy structure, and stand characteristics in northern Colorado ponderosa pine by Klutsch, Jennifer G., Beam, Russell D., Jacobi, William R., Negrón, José F.

“…•Endemic biotic disturbances influence downed wood and crown characteristics.•Older bark beetle-induced mortality increases downed woody material…”
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Evaluating Potential fire behavior in lodgepole pine-dominated forests after a mountain pine beetle epidemic in North-Central Colorado by Klutsch, Jennifer G, Battaglia, Mike A, West, Daniel R, Costello, Sheryl L, Negron, Jose F

“…A mountain pine beetle outbreak in Colorado lodgepole pine forests has altered stand and fuel characteristics that affect potential fire behavior. Using the…”
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Reconstructing historical outbreaks of mountain pine beetle in lodgepole pine forests in the Colorado Front Range by Negrón, José F., Huckaby, Laurie

“…•Mountain pine beetle attack signs can be used to identify historical mortality.•Historical mortality events are consistent with recent events in area and…”
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Canopy structure and below-canopy temperatures interact to shape seedling response to disturbance in a Rocky Mountain subalpine forest by Carlson, Amanda R., Sibold, Jason S., Negrón, José F.

“…•Lack of seed dispersal limits conifer regeneration after high-severity wildfire.•Spruce beetle outbreak severity did not appear to limit seed dispersal.•High…”
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Climate Change and Bark Beetles of the Western United States and Canada: Direct and Indirect Effects by Bentz, Barbara J, Régnière, Jacques, Fettig, Christopher J, Hansen, E. Matthew, Hayes, Jane L, Hicke, Jeffrey A, Kelsey, Rick G, Negrón, Jose F, Seybold, Steven J

“…Climatic changes are predicted to significantly affect the frequency and severity of disturbances that shape forest ecosystems. We provide a synthesis of…”
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Emergence of Buprestidae, Cerambycidae, and Scolytinae (Coleoptera) from Mountain Pine Beetle-Killed and Fire-Killed Ponderosa Pines in the Black Hills, South Dakota, USA by Costello, Sheryl L, Jacobi, William R, Negrón, José F

“…Wood borers (Coleoptera: Cerambycidae and Buprestidae) and bark beetles (Coleoptera: Curculionidae) infest ponderosa pines, Pinus ponderosa P. Lawson and C…”
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Traps and Attractants for Wood-Boring Insects in Ponderosa Pine Stands in the Black Hills, South Dakota by Costello, Sheryl L, Negron, Jose F, Jacobi, William R

“…Recent large-scale wildfires have increased populations of wood-boring insects in the Black Hills of South Dakota. Because little is known about possible…”
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US Forest Service Bark Beetle Research in the Western United States: Looking Toward the Future by Negron, Jose F, Bentz, Barbara J, Fettig, Christopher J, Gillette, Nancy, Hansen, E Matthew, Hayes, Jane L, Kelsey, Rick G, Lundquist, John E, Lynch, Ann M, Progar, Robert A, Seybold, Steven J

“…Abstract Bark beetles cause extensive tree mortality in coniferous forests of western North America and play an important role in the disturbance ecology of…”
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