Forest Management Through Prescribed Fire
Prior to burning on a wildlife refuge, a fire management plan must be completed. This plan describes in detail how prescribed and wild fires will be managed. A burn plan is also necessary for each burn unit. The burn plan documents the specific needs of the site to be burned and specifies the requirements for prescription. If the site is not within prescription on the day of the burn, the burn will not be carried out at that time. Factors like temperature and humidity directly affect fuel moistures and are monitored closely to ensure that if the burn is initiated, it will be beneficial to the environment and meet the burn objectives.
Prescribed fire is only applied when specific set of conditions are met. These conditions include weather factors such as winds and relative humidity, fuel moisture levels, smoke dispersal conditions, and available personnel and equipment. Burn units must be properly prepared and adequate backup resources available assist with a burn in case prescriptive conditions change.
Smoke Management
Where there is fire, there is smoke. Every prescribed fire has a plan for smoke management. The Service complies with the Clean Air Act and submits requests for approval through State air quality specialists. These specialists evaluate the size and type of proposed burn, along with upcoming weather conditions and air quality to determine if the proposed burn can be approved.
Even after State approval, we continue to evaluate weather conditions on-site and take appropriate actions if conditions are not satisfactory.
Dense smoke can actually benefit forest health. Studies have shown that forest canopies exposed to just 15 minutes of wildfire smoke can reduce fungus spores and other pathogens by 45%.
Managing Refuge Forests
Forest management actions include mechanical treatments such as commercial logging, precommercial thinning, piling, and prescribed fire including slash pile and broadcast burning.
On forested units, mechanical treatments often precede prescribed fire to pre-condition the forest for fire re-introduction and ensure safe and effective use of prescribed fire. Prescribed fire is often used to clean up excess slash after a timber sale.
Slash piles include small diameter trees that have been thinned by hand, or portions of larger trees that have been machine piled.
Following these treatments, the land can be maintained cost-effectively with regular use of prescribed fire. Managed forests are more open and the remaining trees have room to grow with less competition for resources. Native wildflowers, grasses, and shrubs return to the forest floor. Wildlife is found foraging for food, sometimes just hours after a .
While forest burning dominates on this refuge Complex, grassland and wetland habitats are periodically burned to enhance and maintain these valuable wildlife habitats.