Steve Mata			240 West Prospect Ft. Collins, CO 80526 Phone: (970) 498-1340 FAX: (970) 498-1314 smata@fs.fed.us
	Forestry Research Technician
	Assists with silvicultural research on the relationship between stand density and beetle-caused tree mortality, and develops methods to reduce survival of beetles in infested trees.

Selected Recent Publications   

Olsen, W.K.; Schmid, J.M.; Mata, S.A. 1996. Stand characteristics associated with mountain pine beetle infestations in ponderosa pine. Forest Science. 42(3): 310-327.

Schmid, J.M.; Mata, S.A. 1996. Natural variability of specific forest insect populations and their associated effects in Colorado. Gen. Tech. Rep. RM-GTR-275. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 24 p.

Schmid, J.M.; Mata, S.A.; Obedzinski, R.A. 1994. Hazard rating ponderosa pine stands for mountain pine beetles in the Black Hills. Res. Note RM-529. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 4 p.

Schmid, J.M.; Mata, S.A. 1992. Stand density and mountain pine beetle-caused tree mortality in ponderosa pine stands. Res. Note RM- 515. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 4 p.

Endeavors

A camp aimed at Hispanic high-school students that gives them an opportunity to learn about careers in the natural resource field such as Forestry, Fish and Wildlife and Park and Recreation.

Fun Photos (click to enlarge)
	'Cinco De Mayo' 2000 celebration.  Local Dance troupe, 'Flor Antiqua', performed authentic dances from Mexico.  Guests enjoyed different foods from South of the border.
	Hispanic students at our Fraser Career Camp.  A demonstration of the use a clinometer, an instrument used to measure tree heights.
	Fun mode of travel used to reach our work site.
	Sampling our winter research sites.
	A 21x Campbell's scientific micrologger.  This instrument is used to monitor climate such as air temperature, wind direction and speed, solar radiation, relative humidity and rain fall.
	Technician  maintaining the micrologger.  Checking that all probes are connected properly and data-logger is capturing data.
	Monitoring beetle dispersal.  Rectangular traps fitted with nylon netting and coated with sticky substance to capture beetles in flight.  Technicians looking for and documenting the number of captured beetles.
	A series of sticky traps positioned around several beetle infested trees to document beetle dispersal.
	Another method to study beetle dispersal was to coat the tree with color pigment powder.  Beetles emerging from the infested trees would be coated with the pigment powder and would attack new trees near by.  Excavation of the beetles from the newly attacked trees would hopefully produce these beetle and give us an indication of dispersal and also the distance beetles fly and attack.  This tree is coated with green pigment powder.
	A tree coated with pink pigment powder.
	A YSI thermistor embedded just below the bark of a ponderosa pine tree to monitor sub-cortical bark temperatures.  This probe is connected to the data-logger that collects temperature data.