Thomas E. Kolb
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View article: ECOSTRESS‐derived semi‐arid forest temperature and evapotranspiration estimates demonstrate drought and thinning impacts
ECOSTRESS‐derived semi‐arid forest temperature and evapotranspiration estimates demonstrate drought and thinning impacts Open
Southwestern US forests are experiencing increasing wildfire activity, and land managers are implementing large‐scale forest thinning treatments. We investigated semi‐arid ponderosa pine forest thinning treatment and regional drought impac…
View article: Network of networks: Time series clustering of AmeriFlux sites
Network of networks: Time series clustering of AmeriFlux sites Open
Environmental observation networks, such as AmeriFlux, are foundational for monitoring ecosystem response to climate change, management practices, and natural disturbances; however, their effectiveness depends on their representativeness f…
View article: Restoration treatments enhance tree growth and alter climatic constraints during extreme drought
Restoration treatments enhance tree growth and alter climatic constraints during extreme drought Open
The frequency and severity of drought events are predicted to increase due to anthropogenic climate change, with cascading effects across forested ecosystems. Management activities such as forest thinning and prescribed burning, which are …
View article: Mitigating drought mortality by incorporating topography into variable forest thinning strategies
Mitigating drought mortality by incorporating topography into variable forest thinning strategies Open
Drought-induced productivity reductions and tree mortality have been increasing in recent decades in forests around the globe. Developing adaptation strategies hinges on an adequate understanding of the mechanisms governing the drought vul…
View article: Inhalt: Chem. Ing. Tech. 1–2/2024
Inhalt: Chem. Ing. Tech. 1–2/2024 Open
auspicious technology for hydrogen production.The article provides a solution to the question of how this can be optimized in terms of costs......
View article: AmeriFlux FLUXNET-1F US-Fwf Flagstaff - Wildfire
AmeriFlux FLUXNET-1F US-Fwf Flagstaff - Wildfire Open
This is the AmeriFlux Management Project (AMP) created FLUXNET-1F version of the carbon flux data for the site US-Fwf Flagstaff - Wildfire. This is the FLUXNET version of the carbon flux data for the site US-Fwf Flagstaff - Wildfire produc…
View article: Differences in heat tolerance, water use efficiency and growth among Douglas-fir families and varieties evidenced by GWAS and common garden studies
Differences in heat tolerance, water use efficiency and growth among Douglas-fir families and varieties evidenced by GWAS and common garden studies Open
Severe and frequent heat and drought events challenge the survival and development of long-generation trees. In this study, we investigated the genomic basis of heat tolerance, water use efficiency and growth by performing genome-wide asso…
View article: AmeriFlux FLUXNET-1F US-Fmf Flagstaff - Managed Forest
AmeriFlux FLUXNET-1F US-Fmf Flagstaff - Managed Forest Open
This is the AmeriFlux Management Project (AMP) created FLUXNET-1F version of the carbon flux data for the site US-Fmf Flagstaff - Managed Forest. This is the FLUXNET version of the carbon flux data for the site US-Fmf Flagstaff - Managed F…
View article: AmeriFlux FLUXNET-1F US-Fuf Flagstaff - Unmanaged Forest
AmeriFlux FLUXNET-1F US-Fuf Flagstaff - Unmanaged Forest Open
This is the AmeriFlux Management Project (AMP) created FLUXNET-1F version of the carbon flux data for the site US-Fuf Flagstaff - Unmanaged Forest. This is the FLUXNET version of the carbon flux data for the site US-Fuf Flagstaff - Unmanag…
View article: Fire and tree mortality database (FTM) (2nd Edition)
Fire and tree mortality database (FTM) (2nd Edition) Open
The Fire and Tree Mortality (FTM) database includes standardized observations of fire injury and survival or mortality for 171,177 individual tree-level observations, representing 142 tree species across the United States. Of these, 7,191 …
View article: Detecting long‐term changes in stomatal conductance: challenges and opportunities of tree‐ring <scp>δ<sup>18</sup>O</scp> proxy
Detecting long‐term changes in stomatal conductance: challenges and opportunities of tree‐ring <span>δ<sup>18</sup>O</span> proxy Open
There is growing scientific consensus that rising atmospheric CO2 concentrations have caused an increase in forest water-use efficiency (WUE), but the magnitude of this effect and the relative roles of enhanced photosynthesis vs reduced st…
View article: Coupling of Tree Growth and Photosynthetic Carbon Uptake Across Six North American Forests
Coupling of Tree Growth and Photosynthetic Carbon Uptake Across Six North American Forests Open
Linking biometric measurements of stand‐level biomass growth to tower‐based measurements of carbon uptake—gross primary productivity and net ecosystem productivity—has been the focus of numerous ecosystem‐level studies aimed to better unde…
View article: Soil moisture response to seasonal drought conditions and post‐thinning forest structure
Soil moisture response to seasonal drought conditions and post‐thinning forest structure Open
Prolonged drought conditions in semi‐arid forests can lead to widespread vegetation stress and mortality. However, the distribution of these effects is not spatially uniform. We measured soil water potential at high spatial and temporal re…
View article: Provenance Variation in Early Survival, Growth, and Carbon Isotope Discrimination of Southwestern Ponderosa Pine Growing in Three Common Gardens across an Elevational Gradient
Provenance Variation in Early Survival, Growth, and Carbon Isotope Discrimination of Southwestern Ponderosa Pine Growing in Three Common Gardens across an Elevational Gradient Open
We investigated early survival, growth, and carbon isotope discrimination of ponderosa pine (Pinus ponderosa Lawson & C. Lawson var. scopulorum Engelm.) seedlings from different provenances using common gardens across an elevational gradie…
View article: The aboveground and belowground growth characteristics of juvenile conifers in the southwestern United States
The aboveground and belowground growth characteristics of juvenile conifers in the southwestern United States Open
Juvenile tree survival will play an important role in the persistence of coniferous forests and woodlands in the southwestern United States (SWUS). Vulnerability to climatic and environmental stress declines as trees grow, such that larger…
View article: Optimizing Carbon Cycle Parameters Drastically Improves Terrestrial Biosphere Model Underestimates of Dryland Mean Net CO2 Flux and its Inter-Annual Variability
Optimizing Carbon Cycle Parameters Drastically Improves Terrestrial Biosphere Model Underestimates of Dryland Mean Net CO2 Flux and its Inter-Annual Variability Open
Drylands occupy ~40% of the land surface and are thought to dominate global carbon (C) cycle inter-annual variability (IAV). Therefore, it is imperative that global terrestrial biosphere models (TBMs), which form the land component of IPCC…
View article: Optimizing Carbon Cycle Parameters Drastically Improves Terrestrial Biosphere Model Underestimates of Dryland Mean Net CO<sub>2</sub> Flux and its Inter‐Annual Variability
Optimizing Carbon Cycle Parameters Drastically Improves Terrestrial Biosphere Model Underestimates of Dryland Mean Net CO<sub>2</sub> Flux and its Inter‐Annual Variability Open
Drylands occupy ∼40% of the land surface and are thought to dominate global carbon (C) cycle inter‐annual variability (IAV). Therefore, it is imperative that global terrestrial biosphere models (TBMs), which form the land component of IPCC…
View article: Dynamic global vegetation models underestimate net CO<sub>2</sub> flux mean and inter-annual variability in dryland ecosystems
Dynamic global vegetation models underestimate net CO<sub>2</sub> flux mean and inter-annual variability in dryland ecosystems Open
Despite their sparse vegetation, dryland regions exert a huge influence over global biogeochemical cycles because they cover more than 40% of the world surface (Schimel 2010 Science 327 418–9). It is thought that drylands dominate the inte…
View article: Combined drought and bark beetle attacks deplete non-structural carbohydrates and promote death of mature pine trees
Combined drought and bark beetle attacks deplete non-structural carbohydrates and promote death of mature pine trees Open
How carbohydrate reserves change in conifers during drought and bark beetle attacks are poorly understood. We investigated changes in carbohydrate reserves and carbon-dependent terpene defenses in ponderosa pine trees experimentally subjec…
View article: Plant developmental stage influences responses of <i>Pinus strobiformis</i> seedlings to experimental warming
Plant developmental stage influences responses of <i>Pinus strobiformis</i> seedlings to experimental warming Open
Seedling emergence, survival, morphological and physiological traits, and oxidative stress resistance of southwestern white pine ( Pinus strobiformis Engelm.) were studied in response to warming treatments applied during embryogenesis, ger…
View article: Wildfire severity and vegetation recovery drive post‐fire evapotranspiration in a southwestern pine‐oak forest, Arizona, USA
Wildfire severity and vegetation recovery drive post‐fire evapotranspiration in a southwestern pine‐oak forest, Arizona, USA Open
Post‐fire stand water balance is a critical factor influencing tree regeneration and survival, which are often modulated by fire severity. We examined influences of the post‐fire vegetation matrix and fire severity on diurnal, seasonal, an…
View article: Optimizing Carbon Cycle Parameters Drastically Improves Terrestrial Biosphere Model Underestimates of Dryland Mean Net CO2 Flux and its Inter-Annual Variability
Optimizing Carbon Cycle Parameters Drastically Improves Terrestrial Biosphere Model Underestimates of Dryland Mean Net CO2 Flux and its Inter-Annual Variability Open
Dryland ecosystems occupy ~40% of the land surface and are thought to dominate global carbon (C) cycle inter-annual variability (IAV). Therefore, it is imperative that global terrestrial biosphere models (TBMs), which form the land compone…
View article: Optimizing Carbon Cycle Parameters Drastically Improves Terrestrial Biosphere Model Underestimates of Dryland Mean Net CO2 Flux and its Inter-Annual Variability
Optimizing Carbon Cycle Parameters Drastically Improves Terrestrial Biosphere Model Underestimates of Dryland Mean Net CO2 Flux and its Inter-Annual Variability Open
Dryland ecosystems occupy ~40% of the land surface and are thought to dominate the inter-annual variability (IAV) and long-term trend of the global carbon (C) cycle. Therefore, it is imperative that global terrestrial biosphere models (TBM…
View article: UAV-Based Estimate of Snow Cover Dynamics: Optimizing Semi-Arid Forest Structure for Snow Persistence
UAV-Based Estimate of Snow Cover Dynamics: Optimizing Semi-Arid Forest Structure for Snow Persistence Open
Seasonal snow cover in the dry forests of the American West provides essential water resources to both human and natural systems. The structure of trees and their arrangement across the landscape are important drivers of snow cover distrib…
View article: Supplementary Dataset for "Representativeness of Eddy-Covariance Flux Footprints for Areas Surrounding AmeriFlux Sites"
Supplementary Dataset for "Representativeness of Eddy-Covariance Flux Footprints for Areas Surrounding AmeriFlux Sites" Open
These datasets are supplementary to the paper "Representativeness of Eddy-Covariance Flux Footprints for Areas Surrounding AmeriFlux Sites" by Chu et al. Dataset S1. Summary of site-specific footprint metrics filename: All_site_fpt_summary…
View article: Supplementary Dataset for "Representativeness of Eddy-Covariance Flux Footprints for Areas Surrounding AmeriFlux Sites"
Supplementary Dataset for "Representativeness of Eddy-Covariance Flux Footprints for Areas Surrounding AmeriFlux Sites" Open
These datasets are supplementary to the paper "Representativeness of Eddy-Covariance Flux Footprints for Areas Surrounding AmeriFlux Sites" by Chu et al. Dataset S1. Summary of site-specific footprint metrics filename: All_site_fpt_summary…