Type
Topic
Region
Year
Displaying 51 - 60 of 60
Only in recent times, systematic attention has been paid to the occupational health of forest firefighters and workers who manage prescribed fire. Two parts of the effort to learn the impact on worker health are medical observation of those workers, and study of occupational…
Person:
Year: 1991
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Prescribed Fire, Safety
Region(s): Unknown
Keywords: vegetation, toxicity, firefighter health
Biomass burning is a major source of emissions to the atmosphere. Some of these emissions may change global climate. This paper uses combustion efficiency as an independent variable for predicting emission factors for, among others, carbon monoxide, carbon dioxide, methane, and…
Person:
Year: 1991
Type: Document
Source: TTRS
Topic(s): Climate, Emissions and Smoke, Fire Ecology, Fire History, Fuels, Models, Prescribed Fire
Region(s): California, Great Basin, Northwest
Keywords: air quality, ash, biomass, C - carbon, carbon dioxide, CO - carbon monoxide, chaparral, chemical elements, combustion, ecosystem dynamics, fire management, gases, climate change, CH4 - methane, N - nitrogen, Oregon, smoke effects, statistical analysis, wildfires
We used a replicated watershed experiment to determine the effects of site preparation burning on mixed hardwood ecosystems. Response measurements included nutrient cycling proecesses and site productivity, soil erosion and water quality, chemistry and quantity of smoke…
Person:
Year: 1991
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Ecology, Fuels, Hazard and Risk, Prescribed Fire
Region(s): Southern
Keywords: Appalachian Mountains, biomass, calcium, C - carbon, chemistry, ecosystem dynamics, erosion, fire hazard reduction, fuel accumulation, hardwood forests, herbaceous vegetation, magnesium, N - nitrogen, nutrient cycling, plant growth, population ecology, post fire recovery, K - potassium, resprouting, seedlings, soil erosion, species diversity (plants), water, water quality, watershed management, watersheds, woody plants
Various studies report changes in phosphorus and nitrogen concentrations in surface waters after wildfires; however, we have found no reports which include nutrient data collected during actual wildfire activity. We had an opportunity to collect water chemistry data from several…
Person:
Year: 1991
Type: Document
Source: TTRS
Topic(s): Aquatic, Emissions and Smoke, Fire Behavior, Fire Ecology
Region(s): Northern Rockies
Keywords: ash, catastrophic fires, chemistry, fire intensity, gases, hydrology, leaching, lightning caused fires, Montana, N - nitrogen, nutrients, particulates, phosphorus, pine forests, Pinus contorta, plant diseases, post fire recovery, sampling, smoke effects, streams, volatilization, water, watershed management, watersheds, wildfires, wind
The effects of a late-summer prescribed burn on the chemistry of a second-order mountain stream in the south-western Cape, South Africa, were investigated. Nitrate concentrations in stream water were significantly higher during the winter of the post-burn year. Increased…
Person:
Year: 1991
Type: Document
Source: TTRS
Topic(s): Aquatic, Emissions and Smoke, Fire Effects, Prescribed Fire
Region(s): International
Keywords: Africa, calcium, chemical elements, chemistry, hydrogen, magnesium, mountains, N - nitrogen, nutrient cycling, nutrients, K - potassium, precipitation, runoff, soil nutrients, South Africa, streams, water, water quality
Today biomass burning is accepted to be an important source of many trace gases affecting atmospheric chemistry (Crutzen et al., 1979; Cofer et al., 1988a; Radke et al., 1988; Crutzen et al., 1990). Despite its global significance and in contrast to fossil fuel use, where…
Person:
Year: 1991
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Monitoring and Inventory
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: C - carbon, laboratory fires, trace gas emissions, biomass burning, N - nitrogen, laboratory experiments
Many potent air toxins are in the smoke of burning forest and range biomass. Firefighters are exposed to the smoke of both wildfire and prescribed fire. A comprehensive assessment of these exposures is not yet possible due to insufficient data. Preliminary data on firefighter…
Person:
Year: 1991
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Ecology, Fuels, Prescribed Fire
Region(s): Northwest
Keywords: air quality, biomass, broadcast burning, C - carbon, CO - carbon monoxide, chemical compounds, clearcutting, coniferous forests, fire suppression, forest management, fuel appraisal, land management, logging, national forests, particulates, rangelands, smoke management, statistical analysis, toxicity, Washington, wildfires
Biomass burning effects the African continent all year round. In the dry season there are widespread savannah fires, and there are always some domestic and agricultural fires. Here we present measurement of particulate black carbon, which is an unambiguous indicator of…
Person:
Year: 1991
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Effects, Mapping, Prescribed Fire
Region(s): International
Keywords: Africa, biomass, C - carbon, combustion, droughts, old growth forests, particulates, pH, precipitation, sampling, savannas, statistical analysis, tropical forests, water, weather observations
Three months after wildfire (Nov. 1989), we tagged 5 resprouts, 20 seedlings and 5 adults of Rhus laurina in the Santa Monica Mountains of California. Seedlings and resprouts were intermixed; adults were adjacent the burn site (stand age 15 years). The lowest midday leaf water…
Person:
Year: 1991
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Effects
Region(s): California, Great Basin
Keywords: age classes, C - carbon, chaparral, chemistry, gases, leaves, mountains, photosynthesis, plant growth, post fire recovery, resprouting, Rhus, Rhus laurina, seedlings, shrubs, southern California, water, wildfires
Climate, vegetation, and fire are interrelated so that any change in one will affect the others. Increases in greenhouse gases, especially carbon dioxide, are expected to increase average surface temperatures and alter precipitation patterns. These changes will alter numerous…
Person:
Year: 1991
Type: Document
Source: TTRS
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire Occurrence, Fuels, Hazard and Risk, Models, Weather
Region(s): Rocky Mountain
Keywords: agriculture, air quality, biogeochemical cycles, biogeography, biomass, C - carbon, carbon dioxide, chemistry, community ecology, competition, coniferous forests, deserts, distribution, ecosystem dynamics, energy, fire danger rating, fire frequency, fire regimes, fuel types, gases, climate change, nutrient cycling, particulates, pine forests, Pinus albicaulis, Pinus contorta, plant communities, plant growth, population ecology, precipitation, Pseudotsuga menziesii, radiation, rainforests, season of fire, shrublands, slash and burn, species diversity (plants), temperature, water, wildfires