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Displaying 101 - 120 of 484

Edges are ecologically important environmental features that have been well researched in agricultural and urban landscapes. However, little work has been conducted in flammable ecosystems where spatially and temporally dynamic fire edges are…
Author(s): Kate Parkins, Amy Scott, Julian Di Stefano, Matthew Swan, Holly Sitters, Alan York
Year Published:

Over recent decades, increases in substantial tree mortality events have coincided with severe drought and bark beetle outbreak. This has prompted forest managers to find treatments that enhance resistance to disturbances. Variable density thinning…
Author(s): Jeffrey M. Kane, Alexis Bernal
Year Published:

Forest insects are showing increasing intensity of outbreaks and expanded ranges, and this has become a major challenge for forest managers. An understanding of these systems often depends upon detailed examination of complex interactions involving…
Author(s): Patrick M.A. James, Dezene P.W. Huber
Year Published:

As wildfire activity increases in many regions of the world, it is imperative that we understand how key components of fire‐prone ecosystems respond to spatial variation in fire characteristics. Pollinators provide a foundation for ecological…
Author(s): Sara M. Galbraith, James H. Cane, Andrew R. Moldenke, James W. Rivers
Year Published:

Wildfires drive global biodiversity patterns and affect plant–pollinator interactions, and are expected to become more frequent and severe under climate change. Post‐fire plant communities often have increased floral abundance and diversity, but the…
Author(s): Paula Banza, Callum J. Macgregor, Anabela D. F. Belo, Richard Fox, Michael J. O. Pocock, Darren M. Evans
Year Published:

Socioeconomic and global climate changes are modifying fire regimes towards larger and more intense fires. Studying the response of organisms to the occurrence of large fires is crucial to anticipate shifts in patterns of biodiversity in fire-prone…
Author(s): Alberto Muñoz, Ángel M. Felicísimo, Xavier Santos
Year Published:

Seedbanks are essential for forest resilience, and disturbance interactions could potentially modify seedbank availability, subsequent forest regeneration patterns, and successional trajectories. Regional mountain pine beetle outbreaks have altered…
Author(s): Anna C. Talucci, Kenneth P. Lertzman, Meg A. Krawchuk
Year Published:

We investigated the spatial-temporal patterns of spruce budworm (Choristoneura fumiferana (Clem.); SBW) defoliation within 57 plots over 5 years during the current SBW outbreak in Québec. Although spatial-temporal variability of SBW defoliation has…
Author(s): Mingke Li, David A. MacLean, Chris R. Hennigar, Jae Ogilvie
Year Published:

Prescribed burning has the potential to improve habitat for species that depend on pyric ecosystems or other early successional vegetation types. For species that occupy diverse plant communities over the extent of their range, response to…
Author(s): Laura C. Gigliotti, Benjamin C. Jones, Matthew J. Lovallo, Duane R. Diefenbach
Year Published:

Managers require quantitative yet tractable tools that identify areas for restoration yielding effective benefits for targeted wildlife species and the ecosystems they inhabit. As a contemporary example of high national significance for conservation…
Author(s): Mark A. Ricca, Peter S. Coates, K. Benjamin Gustafson, Brianne E. Brussee, Jeanne C. Chambers, Shawn Espinosa, Scott C. Gardner, Sherri Lisius, Pilar Ziegler, David J. Delehanty, Michael L. Casazza
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The severity of lodgepole pine mortality from mountain pine beetle outbreaks varies with host tree diameter, density, and other structural characteristics, influencing subcanopy conditions and tree regeneration. We measured density and leader growth…
Author(s): Kristen Pelz, Charles C. Rhoades, Robert M. Hubbard, Frederick W. Smith
Year Published:

Interactions between fire and nonnative, annual plant species (that is, 'the grass/fire cycle') represent one of the greatest threats to sagebrush (Artemisia spp.) ecosystems and associated wildlife, including the greater sage-grouse (Centrocercus…
Author(s): Douglas J. Shinneman, Cameron L. Aldridge, Peter S. Coates, Matthew J. Germino, David S. Pilliod, Nicole M. Vaillant
Year Published:

Fire creates challenges and opportunities for wildlife through rapid destruction, modification and creation of habitat. Fire has spatially variable effects on landscapes; however, for species that benefit from the ephemeral resource patches created…
Author(s): Morgan W. Tingley, Andrew N. Stillman, Robert L. Wilkerson, Christine A. Howell, Sarah C. Sawyer, Rodney B. Siegel
Year Published:

Beginning in the late 1990s, the pine forests of Montana began to experience the largest mountain pine beetle outbreak in recorded history. Large swaths of forests began to turn red, then gray as the beetles ate their way through Pacific Northwest…
Author(s): Dan R. Loeffler, Nathaniel Anderson
Year Published:

Prescribed burning is a primary tool for habitat restoration and management in fire-adapted grasslands. Concerns about detrimental effects of burning on butterfly populations, however, can inhibit implementation of treatments. Burning in cool and…
Author(s): Kathryn C. Hill, Jonathan D. Bakker, Peter W. Dunwiddie
Year Published:

Interactions between fire and nonnative, annual plant species (that is, “the grass/fire cycle”) represent one of the greatest threats to sagebrush (Artemisia spp.) ecosystems and associated wildlife, including the greater sage-grouse (Centrocercus…
Author(s): Douglas J. Shinneman, Cameron L. Aldridge, Peter S. Coates, Matthew J. Germino, David S. Pilliod, Nicole M. Vaillant
Year Published:

Fire-maintained pine (Pinus spp.) forests, characterized by a diverse herbaceous layer, sparse midstory layer, and a dominant pine overstory, once covered approximately 30 million ha in the southeastern United States. Fire suppression, landscape…
Author(s): Raymond B. Iglay, Rachel E. Greene, Bruce D. Leopold, Darren A. Miller
Year Published:

Rodent populations respond quickly to changes in habitat structure and composition resulting from disturbances such as wildfires. Rodents may recolonise burnt areas from individuals that survived the wildfire in ‘internal refuges’ or from the…
Author(s): Roger Puig-Gironès, Miguel Clavero, Pere Pons
Year Published:

In the northern Rocky Mountains of the U.S. and Canada, whitebark pine (Pinus albicaulis Engelm.) is a functionally important species in treeline communities. The introduced fungal pathogen Cronartium ribicola, which causes white pine blister rust,…
Author(s): Aaron C. Wagner, Diana F. Tomback, Lynn M. Resler, Elizabeth R. Pansing
Year Published:

Disturbance is a fundamental ecological process and driver of population dynamics. Ecologists seek to understand the effects of disturbance on ecological systems and to use disturbance to modify habitats degraded by anthropogenic change. Demographic…
Author(s): Norah Warchola, Elizabeth E. Crone, Cheryl B. Schultz
Year Published: