RNR 384 Natural Resources - Management Practices
FIRE AND PEST MANAGEMENT PRACTICES
Natural ecosystems must be protected from the detrimental effects of fire, insects, and
fungi to maintain healthy ecosystems.
Strategies and management practices often followed in
protecting these ecosystems from fire, and other damaging agents and pests, are presented in
these lecture notes.
is the rapid release of the heat energy stored in (living and dead) plants by
One often thinks of flames at the mentioned of fire.
However, there is more to
fire than flame.
is the manifestation of a series of chemical reactions, while flame is a gas-
phase phenomenon of fire and, therefore, only part of the process.
is a fire of natural origin, often lightning.
is a fire
caused directly or indirectly by a person or people.
is a fire that is not meeting
management objectives and, therefore, requires suppression.
is a fire burning
with prescription, resulting from a planned ignition.
is a statement specifying the
management objective to be attained, and the weather conditions, fuel moisture condition, and
soil moisture conditions in which a fire will be allowed to burn.
is a fire
of natural origin which is allowed to burn as long as it is accomplishing one or more stated
combines chemical, biological, cultural, and mechanical
practices to maintain pest levels below a pre-established threshold.
It often serves as a backup to
pest control when other control methods fail.
Wildfire can be a potential threat to all natural ecosystems.
Even in relatively high
rainfall areas, there can be hot and dry periods of time when the fire risk is relatively high.
Dangerous wildfire occur initially at ground level.
Once it spreads rapidly on the ground and
increase their intensities, wildfire can move into crowns of trees and shrubs, causing even greater
The risk of fire, therefore, should be a major consideration in planning for the
sustainable management of natural resources.
Wildfire originates from either natural causes (such as lightning strikes, spontaneous
combustion, or volcanic activity) or the actions of people.
The latter often result from purposely
started fires spreading from agricultural croplands on the perimeter, burning by ranchers to