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A global overview of drought and heat-induced tree mortality reveals emerging climate change risks for forests
Greenhouse gas emissions have significantly altered global climate, and will continue to do so in the future. Increases in the frequency, duration, and/or severity of drought and heat stress… Expand
Regional vegetation die-off in response to global-change-type drought.
- D. Breshears, N. Cobb, +10 authors C. W. Meyer
- Environmental Science, Medicine
- Proceedings of the National Academy of Sciences…
- 18 October 2005
Future drought is projected to occur under warmer temperature conditions as climate change progresses, referred to here as global-change-type drought, yet quantitative assessments of the triggers and… Expand
TREE-RING VARIATION IN PINYON PREDICTS LIKELIHOOD OF DEATH FOLLOWING SEVERE DROUGHT
A severe drought in northern Arizona caused widespread pinyon (Pinus edulis) mortality, exceeding 40% in some populations. We measured tree-ring widths of pinyons that survived and that died in three… Expand
INSECT HERBIVORY INCREASES LITTER QUALITY AND DECOMPOSITION: AN EXTENSION OF THE ACCELERATION HYPOTHESIS
Herbivore alteration of litter inputs may change litter decomposition rates and influence ecosystem nutrient cycling. In a semiarid woodland at Sunset Crater National Monument, Arizona, long-term… Expand
Long-term effects of chaining treatments on vegetation structure in piñon-juniper woodlands of the Colorado Plateau.
Abstract Over the last half-century a range of methods have been utilized to reduce trees and shrubs in order to reduce wildfire risk and promote herbaceous vegetation to support livestock and… Expand
Relationship of stand characteristics to drought-induced mortality in three southwestern piñion-juniper woodlands.
- M. Floyd, M. Clifford, +4 authors D. Turner
- Biology, Medicine
- Ecological applications : a publication of the…
- 1 July 2009
Extreme drought conditions accompanied by rising temperatures have characterized the American Southwest during the past decade, causing widespread tree mortality in piñion-juniper woodlands. Piñon… Expand
Insect Infestations Linked to Shifts in Microclimate: Important Climate Change Implications
Changes in vegetation due to drought-influenced herbivory may influence microclimate in ecosystems. In combination with studies of insect resistant and susceptible trees, we used long-term herbivore… Expand
Increased moth herbivory associated with environmental stress of pinyon pine at local and regional levels
- N. Cobb, S. Mopper, C. Gehring, Matt Caouette, Kerry M. Christensen, T. Whitham
- Biology, Medicine
- 1 February 1997
Abstract Using 6 years of observational and experimental data, we examined the hypothesis that water and nutrient stress increase the susceptibility of pinyon pine (Pinus edulis) to the stem- and… Expand
Extreme climatic event-triggered overstorey vegetation loss increases understorey solar input regionally: primary and secondary ecological implications
Summary 1. Climate extremes such as drought can trigger large-scale tree die-off, reducing overstorey canopy and thereby increasing near-ground solar radiation. This directly affects biotic and… Expand
Arthropod dynamics on sagebrush (Artemisia tridentata): effects of plant chemistry and avian predation
We conducted a field experiment to assess interrelationships between leaf- tissue secondary chemistry, avian predation, and the abundance and diversity of arthropods occurring on sagebrush (Artemisia… Expand