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Full-Text Articles in Life Sciences
Landscape Ecology Of Large Fires In Southwestern Forests, Usa, Sandra L Haire
Landscape Ecology Of Large Fires In Southwestern Forests, Usa, Sandra L Haire
Doctoral Dissertations 1896 - February 2014
The recent increase in large fires in southwestern forests has prompted concern regarding their ecological consequences. Recognizing the importance of spatial patterns in influencing successional processes, I asked: (1) How do large fires change plant communities?; (2) What are the implications of these changes for ponderosa pine forests?; and (3) What is the relationship of fire severity to gradients of climate, fuels, and topography? To address the first two questions, I studied succession in the woody plant community at two sites that burned in high-severity fire: La Mesa fire in northern New Mexico (1977) and Saddle Mountain in northern Arizona …
Boreal Forest Fire Impacts On Lower Troposphere Carbon Monoxide And Ozone Levels At The Regional To Hemispheric Scales, Kateryna Lapina
Boreal Forest Fire Impacts On Lower Troposphere Carbon Monoxide And Ozone Levels At The Regional To Hemispheric Scales, Kateryna Lapina
Dissertations, Master's Theses and Master's Reports - Open
Tropospheric ozone (O3) and carbon monoxide (CO) pollution in the Northern Hemisphere is commonly thought to be of anthropogenic origin. While this is true in most cases, copious quantities of pollutants are emitted by fires in boreal regions, and the impact of these fires on CO has been shown to significantly exceed the impact of urban and industrial sources during large fire years. The impact of boreal fires on ozone is still poorly quantified, and large uncertainties exist in the estimates of the fire-released nitrogen oxides (NO x ), a critical factor in ozone production. As boreal fire activity is …