Thomas E Kolb
Biographic Data
| ID | 6819841 |
|---|---|
| NAME | Thomas E Kolb |
| GIVEN NAMES | Thomas E |
| FAMILY NAME | Kolb |
| SIGNATURE | KOLB T E |
| AFFILIATIONS | Northern Arizona University |
| ORCID | 0000-0002-3829-4265 |
| VERIFIED | Yes |
| TOTAL WORKS | 6 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 6 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2008 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 0 |
Mitigating drought mortality by incorporating topography into variable forest thinning strategies
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 vulnerability of forest stands. Prescribed reduction in stand density has been used as a management tool to reduce water stress and wildfire risk, but the processes that modulate fine-scale variations in plant wate…
Dynamic global vegetation models underestimate net CO 2 flux mean and inter-annual variability in dryland ecosystems
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 inter-annual variability (IAV) and long-term trend in the global carbon (C) cycle (Poulter et al 2014 Nature 509 600–3, Ahlstrom et al 2015 Science 348 895–9, Zhang et al 2018 Glob. Change Biol . 24 3954–68). Projec…
A new drought tipping point for conifer mortality
(Huang et al 2015 Environ. Res. Lett. 10 024011 ) present a method for predicting mortality of ponderosa pine ( Pinus ponderosa ) and pinyon pine ( Pinus edulis ) in the Southwestern US during severe drought based on the relationship between the standardized precipitation–evapotranspiration index (SPEI) and annual tree ring growth. Ring growth was zero when SPEI for September to July was −1.64. The threshold SPEI of −1.64 was successful in distin…
Extreme late-summer drought causes neutral annual carbon balance in southwestern ponderosa pine forests and grasslands
We assessed the impacts of extreme late-summer drought on carbon balance in a semi-arid forest region in Arizona. To understand drought impacts over extremes of forest cover, we measured net ecosystem production (NEP), gross primary production (GPP), and total ecosystem respiration (TER) with eddy covariance over five years (2006–10) at an undisturbed ponderosa pine ( Pinus ponderosa ) forest and at a former forest converted to grassland by inten…
Climate control of terrestrial carbon exchange across biomes and continents
Understanding the relationships between climate and carbon exchange by terrestrial ecosystems \nis critical to predict future levels of atmospheric carbon dioxide because of the potential \naccelerating effects of positive climate–carbon cycle feedbacks. However, directly observed \nrelationships between climate and terrestrial CO2 exchange with the atmosphere across biomes \nand continents are lacking. Here we present data describing the relatio…
Mechanisms of plant survival and mortality during drought: Why do some plants survive while others succumb to drought?
Severe droughts have been associated with regional‐scale forest mortality worldwide. Climate change is expected to exacerbate regional mortality events; however, prediction remains difficult because the physiological mechanisms underlying drought survival and mortality are poorly understood. We developed a hydraulically based theory considering carbon balance and insect resistance that allowed development and examination of hypotheses regarding s…
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Mechanisms of plant survival and mortality during drought: Why do some plants survive while others succumb to drought?
Severe droughts have been associated with regional‐scale forest mortality worldwide. Climate change is expected to exacerbate regional mortality events; however, prediction remains difficult because the physiological mechanisms underlying drought survival and mortality are poorly understood. We developed a hydraulically based theory considering carbon balance and insect resistance that allowed development and examination of hypotheses regarding s…
Climate control of terrestrial carbon exchange across biomes and continents
Understanding the relationships between climate and carbon exchange by terrestrial ecosystems \nis critical to predict future levels of atmospheric carbon dioxide because of the potential \naccelerating effects of positive climate–carbon cycle feedbacks. However, directly observed \nrelationships between climate and terrestrial CO2 exchange with the atmosphere across biomes \nand continents are lacking. Here we present data describing the relatio…
Extreme late-summer drought causes neutral annual carbon balance in southwestern ponderosa pine forests and grasslands
We assessed the impacts of extreme late-summer drought on carbon balance in a semi-arid forest region in Arizona. To understand drought impacts over extremes of forest cover, we measured net ecosystem production (NEP), gross primary production (GPP), and total ecosystem respiration (TER) with eddy covariance over five years (2006–10) at an undisturbed ponderosa pine ( Pinus ponderosa ) forest and at a former forest converted to grassland by inten…
A new drought tipping point for conifer mortality
(Huang et al 2015 Environ. Res. Lett. 10 024011 ) present a method for predicting mortality of ponderosa pine ( Pinus ponderosa ) and pinyon pine ( Pinus edulis ) in the Southwestern US during severe drought based on the relationship between the standardized precipitation–evapotranspiration index (SPEI) and annual tree ring growth. Ring growth was zero when SPEI for September to July was −1.64. The threshold SPEI of −1.64 was successful in distin…
Dynamic global vegetation models underestimate net CO 2 flux mean and inter-annual variability in dryland ecosystems
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 inter-annual variability (IAV) and long-term trend in the global carbon (C) cycle (Poulter et al 2014 Nature 509 600–3, Ahlstrom et al 2015 Science 348 895–9, Zhang et al 2018 Glob. Change Biol . 24 3954–68). Projec…
Mitigating drought mortality by incorporating topography into variable forest thinning strategies
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 vulnerability of forest stands. Prescribed reduction in stand density has been used as a management tool to reduce water stress and wildfire risk, but the processes that modulate fine-scale variations in plant wate…
Environmental Science (6 works) · Plant Water Relations and Carbon Dynamics (6 works) · Geography (5 works) · Ecology (4 works) · Atmospheric sciences (3 works) · Biology (3 works) · Carbon cycle (3 works) · Climate change (3 works) · Climate variability and models (3 works) · Ecosystem (3 works)