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Displaying 101 - 120 of 484

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:

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:

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:

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:

Aim: Understanding fire effects on pollinators is critical in the context of fire regime changes and the global pollination crisis. Through a systematic and quantitative review of the literature, we provide the first global assessment of pollinator…
Author(s): Lucas M. Carbone, Julia Tavella, Juli G. Pausas, Ramiro Aguilar
Year Published:

Drought stress is an important consideration for wildlife in arid and semi‐arid regions under climate change. Drought can impact plant and animal populations directly, through effects on their physiology, as well as indirectly through effects on…
Author(s): James F. Saracco, Stephen M. Fettig, George L. San Miguel, David W. Mehlman, Steven K. Albert
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:

Community-level climate change indicators have been proposed to appraise the impact of global warming on community composition. However, non-climate factors may also critically influence species distribution and biological community assembly. The…
Author(s): Adrián Regos, Miguel Clavero, Manuela D'Amen, Antoine Guisan, Lluis Brotons
Year Published:

Non‐linear and interacting effects of fire severity and time since fire may help explain how pyrodiversity promotes biodiversity in fire‐adapted systems. We built on previous research on avian responses to fire by investigating how complex effects…
Author(s): Paul J. Taillie, Ryan D. Burnett, Lance J. Roberts, Brent R. Campos, M. Nils Peterson, Christopher E. Moorman
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:

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:

Throughout much of the 20th century, the heights of young quaking aspen (Populus tremuloides) in Yellowstone National Park’s northern ungulate winter range were suppressed due to intensive herbivory by Rocky Mountain elk (Cervus elaphus). However,…
Author(s): Robert L. Beschta, Luke E. Painter, William J. Ripple
Year Published:

Fire is a dominant, and well-studied, structuring force in many temperate and semi-arid communities; yet, few studies have investigated the effects of fire on multi-trophic interactions. Here, we ask how fire-induced changes in flowering affect the…
Author(s): John M. Mola, Neal M. Williams
Year Published:

Genetic networks can characterize complex genetic relationships among groups of individuals, which can be used to rank nodes most important to the overall connectivity of the system. Ranking allows scarce resources to be guided toward nodes integral…
Author(s): Todd Cross, Michael K. Schwartz, David E. Naugle, Brad C. Fedy, Jeffrey R. Row, S.J. Oyler-McCance
Year Published:

Drought stress is an important consideration for wildlife in arid and semiarid regions under climate change. Drought can impact plant and animal populations directly, through effects on their physiology, as well as indirectly through effects on…
Author(s): James F. Saracco, Stephen M. Fettig, George L. San Miguel, David W. Mehlman, Brent E. Thompson, Steven K. Albert
Year Published:

The greater sage-grouse (Centrocercus urophasianus; hereafter called “sage-grouse”), a species that requires sagebrush (Artemisia spp.), has experienced range-wide declines in its distribution and abundance. These declines have prompted substantial…
Author(s): Steven E. Hanser, Patricia A. Deibert, John C. Tull, Natasha B. Carr, Cameron L. Aldridge, Travis D. Bargsten, Thomas J. Christiansen, Peter S. Coates, Michele R. Crist, Kevin E. Doherty, Ethan A. Ellsworth, Lee J. Foster, Vicki A. Herren, Kevin H. Miller, Ann Moser, Robin M. Naeve, Karen L. Prentice, Thomas E. Remington, Mark A. Ricca, Douglas J. Shinneman, Richard L. Truex, Lief A. Wiechman, Dereck C. Wilson, Z.H. Bowen
Year Published:

Recurrent environmental changes often prompt animals to alter their behavior leading to predictable patterns across a range of temporal scales. The nested nature of circadian and seasonal behavior complicates tests for effects of rarer disturbance…
Author(s): Derek B. Spitz, Darren A. Clark, Michael J. Wisdom, Mary M. Rowland, Bruce K. Johnson, Ryan A. Long, Taal Levi
Year Published: