Related Experiment Video
Updated: May 12, 2026
06:27
Simulating Impacts of Ice Storms on Forest Ecosystems
Published on: June 30, 2020
Observations from old forests underestimate climate change effects on tree mortality.
1Faculty of Natural Resources Management, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario, Canada P7B 5E1.
Nature Communications
|April 5, 2013
Summary
Climate change and forest development both increase tree mortality. However, climate change impacts tree mortality more severely in young forests due to their higher sensitivity to warming and drought.
Area of Science:
- Forest Ecology
- Climate Change Science
- Forestry
Background:
- Understanding climate change impacts on forest ecosystems is crucial for predicting future forest structure and function.
- Temporal increases in tree mortality are often observed, but attributing these increases solely to climate change or natural stand development processes remains challenging.
- Existing studies on climate change-associated tree mortality in old forests may not be directly applicable to younger forests, as their responses to climate stressors could differ.
Purpose of the Study:
- To disentangle the distinct effects of climate change and stand developmental processes on temporal increases in tree mortality.
- To investigate whether the impact of climate change on tree mortality differs between young and old forests.
- To provide a foundation for more robust assessments of forest ecosystem responses to climate change.
Main Methods:
- Utilized a methodology to differentiate between mortality causes attributable to climate change and those related to stand development.
- Compared the influence of climate change and stand development on tree mortality across different forest age classes.
- Analyzed the sensitivity of young versus old forests to regional warming and drought conditions.
Main Results:
- Both climate change and forest development processes were found to significantly influence temporal increases in tree mortality.
- Climate change-associated increases in tree mortality were substantially higher in young forests compared to old forests.
- Younger forests exhibited greater sensitivity to regional warming and drought, leading to higher climate change-associated mortality rates.
Conclusions:
- Climate change and forest development are both key drivers of increasing tree mortality.
- Younger forests are disproportionately affected by climate change-induced mortality due to heightened sensitivity to warming and drought.
- This research highlights the need for age-specific considerations in climate change impact assessments on forests.
Related Concept Videos
01:50Global Climate Change
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
01:19Survival Tree
Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
Building a Survival Tree
Constructing a survival tree begins...
Building a Survival Tree
Constructing a survival tree begins...
02:07Conservation of Declining Populations
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
01:27Microbes and Climate Change
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
01:57Adaptations that Reduce Water Loss
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
02:17Ecological Succession
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...