Although a natural ecological process, wildfire in unhealthy forests can be uncharacteristically destructive. Fuel treatments—such as thinning, mowing, prescribed fire, or managed wildfire—can help reduce or redistribute the flammable fuels that threaten to carry and intensify fire.
Because wildfire size and frequency are expected to increase in many forested areas in the United States, organizations involved in forest and wildfire management could arguably benefit from working together and sharing information to develop strategies for how to adapt to this increasing risk.
Plant responses to ozone (O<sub>3</sub>) and water deficit (WD) are commonly observed, although less is known about their interaction. Stomatal conductance (<em>g<sub>s</sub></em>) is both an impact of these stressors and a protective response to them.
The area burned annually by wildfires is expected to increase worldwide due to climate change. Burned areas increase soil erosion rates within watersheds, which can increase sedimentation in downstream rivers and reservoirs.
The National Cohesive Wildland Fire Management Strategy recognizes that wildfire is a necessary natural process in many ecosystems and strives to reduce conflicts between fire-prone landscapes and people.
Effects of canopy ozone (O<sub>3</sub>) exposure and signatures of genetic structure using isozyme markers associated with O<sub>3</sub> tolerance were analyzed in ~20-, ~80-, and >200-yr-old ponderosa (<em>Pinus ponderosa</em> Dougl.
The level II approach of the critical loads concept adopted by the UNECE aims at a flux based evaluation and takes into account environmental factors governing stomatal conductance. These factors will probably be affected by global change.
We tested the effect of daytime chronic moderate ozone (O<sub>3</sub>) exposure, short-term acute exposure, and both chronic and acute O<sub>3</sub> exposure combined on nocturnal transpiration in California black oak and blue oak seedlings.