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Keyword: phenology

Modeling mountain pine beetle (Dendroctonus ponderosae) oviposition

Publications Posted on: July 08, 2019
Mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae, Scolytinae), is a significant forest disturbance agent with a widespread distribution in western North America. Population success is influenced by temperatures that drive phenology and ultimately the adult emergence synchrony required to mass attack and kill host trees during outbreaks.

Ips typographus and Dendroctonus ponderosae models project thermal suitability for intra- and inter-continental establishment in a changing climate

Publications Posted on: July 08, 2019
Climate change is altering legacies of native insect-caused disturbances and contributing to non-native invasions globally. Many insect fitness traits are temperature dependent and projected climatic changes are expected to cause continued alterations in insect-caused tree mortality, with uncertain consequences for forest ecosystems and their management.

Phenotypic selection on growth rhythm in whitebark pine under climatic conditions warmer than seed origins

Publications Posted on: May 22, 2019
Growth rhythm that is well synchronized with seasonal changes in local climatic conditions is understood to enhance fitness; however, rapid ongoing climate change threatens to disrupt this synchrony.

Proceedings-research and management of bitterbrush and cliffrose in Western North America

Publications Posted on: February 26, 2019
Bitterbrush and cliff rose are perhaps the most widely managed shrubs in Western North America. This proceedings of 27 papers is a collection of our current knowledge on research and management of bitterbrush, cliffrose, and other rosaceous shrubs in Western North America.

Linking phenological indices from digital cameras in Idaho and Montana to MODIS NDVI

Publications Posted on: December 06, 2018
Digital cameras can provide a consistent view of vegetation phenology at fine spatial and temporal scales that are impractical to collect manually and are currently unobtainable by satellite and most aerial based sensors.

Temporal dynamics of aerodynamic canopy height derived from eddy covariance momentum flux data across North American flux networks

Publications Posted on: September 28, 2018
Aerodynamic canopy height (ha) is the effective height of vegetation canopy for its influence on atmospheric fluxes and is a key parameter of surface-atmosphere coupling. However, methods to estimate ha from data are limited. This synthesis evaluates the applicability and robustness of the calculation of ha from eddy covariance momentum-flux data.

Evidence for a prepupal diapause in the mountain pine beetle (Dendroctonus ponderosae, Coleoptera: Curculionidae, Scolytinae)

Publications Posted on: June 01, 2018
Dormancy strategies, including diapause and quiescence, enable insects to evade adverse conditions and ensure seasonally appropriate life stages. A mechanistic understanding of a species’ dormancy is necessary to predict population response in a changing climate.

Linking hydroclimate to fish phenology and habitat use with ichthyographs

Publications Posted on: April 26, 2017
Streamflow and water temperature (hydroclimate) influence the life histories of aquatic biota. The relationship between streamflow and temperature varies with climate, hydrogeomorphic setting, and season. Life histories of native fishes reflect, in part, their adaptation to regional hydroclimate (flow and water temperature), local habitats, and natural disturbance regimes, all of which may be affected by water management.

Elevational shifts in thermal suitability for mountain pine beetle in a changing climate

Science Spotlights Posted on: August 18, 2016
Future forests are being shaped by a changing climate. In addition to the direct effects on trees, climate change is influencing bark beetle disturbance events. Understanding the influence of future climate on bark beetle population growth and associated tree mortality is imperative for management of future forests.

Integrating models to investigate critical phenological overlaps in complex ecological interactions: The mountain pine beetle-fungus symbiosis

Publications Posted on: July 15, 2016
The fates of individual species are often tied to synchronization of phenology, however, few methods have been developed for integrating phenological models involving linked species. In this paper, we focus on mountain pine beetle (MPB, Dendroctonus ponderosae) and its two obligate mutualistic fungi, Grosmannia clavigera and Ophiostoma montium.

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