Climate Change and Bark Beetles of the Western United States and Canada: Direct and Indirect Effects

  title={Climate Change and Bark Beetles of the Western United States and Canada: Direct and Indirect Effects},
  author={Barbara J. Bentz and Jacques R{\'e}gni{\`e}re and Christopher J Fettig and Everett Hansen and Jane Leslie Hayes and Jeffrey A. Hicke and Rick G Kelsey and Jos{\'e} F Negr{\'o}n and Steven J. Seybold},
Climatic changes are predicted to significantly affect the frequency and severity of disturbances that shape forest ecosystems. We provide a synthesis of climate change effects on native bark beetles, important mortality agents of conifers in western North America. Because of differences in temperature-dependent life-history strategies, including cold-induced mortality and developmental timing, responses to warming will differ among and within bark beetle species. The success of bark beetle… 
Interactions Among Fuel Management, Species Composition, Bark Beetles, and Climate Change and the Potential Effects on Forests of the Lake Tahoe Basin
AbstractClimate-driven increases in wildfires, drought conditions, and insect outbreaks are critical threats to forest carbon stores. In particular, bark beetles are important disturbance agents
Warming increased bark beetle‐induced tree mortality by 30% during an extreme drought in California
Assessment of how contemporary warming affected western pine beetle populations and mortality of its host, ponderosa pine, during an extreme drought in the Sierra Nevada, California, and United States found that contemporary warming increased the development rate of the western pine beetles and decreased the overwinter mortality rate ofWestern pine beetle larvae leading to increased population growth during periods of lowered tree defense.
Climate affects severity and altitudinal distribution of outbreaks in an eruptive bark beetle
Temperature warming and the increased frequency of climatic anomalies are expected to trigger bark beetle outbreaks with potential severe consequences on forest ecosystems. We characterized the
Climate and bark beetle effects on forest productivity -- linking dendroecology with forest landscape modeling
In forested systems throughout the world, climate influences tree growth and aboveground net primary productivity (ANPP). The effects of extreme climate events (i.e., drought) on ANPP can be
Elevational shifts in thermal suitability for mountain pine beetle population growth in a changing climate
Future forests are being shaped by changing climate and disturbances. Climate change is causing large-scale forest declines globally, in addition to distributional shifts of many tree species.
Climate and weather influences on spatial temporal patterns of mountain pine beetle populations in Washington and Oregon.
The observed number of trees killed by mountain pine beetles per square kilometer in Oregon and Washington, USA, over the past three decades is used to quantify and assess the influence of climate and weather variables on beetle activity over longer time periods and larger scales than previously studied.
Interactions among spruce beetle disturbance, climate change and forest dynamics captured by a forest landscape model
The risk of bark beetle outbreaks is widely predicted to increase because of a warming climate that accelerates temperature-driven beetle population growth and drought stress that impairs host tree
Interactions of predominant insects and diseases with climate change in Douglas-fir forests of western Oregon and Washington, U.S.A.
Landscape-Scale Drivers of Resistance and Resilience to Bark Beetles: A Conceptual Susceptibility Model
Bark beetle (Dendroctonus spp.) outbreaks in the middle latitudes of western North America cause large amounts of tree mortality, outstripping wildfire by an order of magnitude. While temperatures


Modeling the Impacts of Two Bark Beetle Species Under a Warming Climate in the Southwestern USA: Ecological and Economic Consequences
Forest thinning treatments that reduce forest susceptibility to beetle outbreak result in higher net present values than no action scenarios, and combined with other deleterious consequences associated with beetle outbreaks, the results suggest that forest thinning treatment play a useful role in a period of climate warming.
Herbivory in global climate change research: direct effects of rising temperature on insect herbivores
This review examines the direct effects of climate change on insect herbivores. Temperature is identi®ed as the dominant abiotic factor directly affecting herbivorous insects. There is little
Cross-scale Drivers of Natural Disturbances Prone to Anthropogenic Amplification: The Dynamics of Bark Beetle Eruptions
ABSTRACT Biome-scale disturbances by eruptive herbivores provide valuable insights into species interactions, ecosystem function, and impacts of global change. We present a conceptual framework using
Changing temperatures influence suitability for modeled mountain pine beetle (Dendroctonus ponderosae) outbreaks in the western United States
[1] Insect outbreaks are significant disturbances in forests of the western United States, with infestation comparable in area to fire. Outbreaks of mountain pine beetle (Dendroctonus ponderosae
Model Analysis of Mountain Pine Beetle (Coleoptera: Scolytidae) Seasonality
The results indicate that an adaptive seasonality is a natural consequence of the interaction between developmental parameters and seasonal temperatures, and although this adaptive phenology appears to be resilient to temperature fluctuations, changes in climate within the magnitude of predicted climate change under a CO2 doubling scenario are capable of shifting a thermologically hostile environment to a thermally benign environment.
Cross-scale drivers of natural disturbances prone to anthropogenic amplification: Dynamics of biome-wide bark beetle eruptions
A conceptual framework using one system as a model is presented, emphasizing interactions across levels of biological hierarchy and spatiotemporal scales, and systems in which endogenous feedbacks can dominate after external forces foster the initial breach of thresholds appear particularly sensitive to anthropogenic perturbations.
Potential Impacts of Climate Change on the Distribution of North American Trees
The present-day climatic niches for 130 North American tree species are determined and the climatic conditions of these niches are located on maps of predicted future climate, indicating where each species could potentially occur by the end of the century.
Physical effects of weather events on the abundance and diversity of insects in North American forests
We summarize the effects of major weather events such as ice storms, wind storms, and flooding on the abundance and diversity of terrestrial forest insects and their allies. This synthesis indicates
Regional vegetation die-off in response to global-change-type drought.
  • D. Breshears, N. Cobb, C. W. Meyer
  • Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 2005
The results quantify a trigger leading to rapid, drought-induced die-off of overstory woody plants at subcontinental scale and highlight the potential for such die-offs to be more severe and extensive for future global-change-type drought under warmer conditions.
Climate Change and Forest Disturbances
tudies of the effects of climate change on forestshave focused on the ability of species to tolerate tem-perature and moisture changes and to disperse,but they haveignored the effects of disturbances