Native Tallgrass Prairie Site: Shidler, Oklahoma

Data Access

Key Investigators/Institutional Affiliations:
University of Nebraska
School of Natural Resource Sciences
244 L.W. Chase Hall
Lincoln, NE 68583-0728


Name Position Email Phone Fax

Shashi B. Verma		 Primary Investigator sverma1@unl.edu 402-472-6702 402-472-6614
George G. Burba Site Scientist GBurba@unlserve.unl.edu    
Todd T. Schimelfenig Site Scientist Tschimelfenig1@unl.edu 402-472-8764 402-472-6614
Andrew (Andy) E. Suyker Site Scientist asuyker@unl.edu 402-472-2168 402-472-3679
James (Jim) R. Hines Technical Support jhines2@unl.edu 402-472-6708  
John P. Martin Technical Support jmartin1@unl.edu 405-762-3914  
Sheldon D. Sharp Technical Support ssharp@hpccsun.unl.edu 402-624-8050  


Sponsor:

National Institute for Global Environmental Change, Great Plains Regional Center (NIGEC)


Research Topics:

Measurement and modeling of net exchange of carbon dioxide in native grassland and agricultural ecosystems


Publications:

*National Institute for Global Environmental Change, Annual Progress Report for FY 97/98, Net Exchange of Carbon Dioxide in Grassland and Agricultural Ecosystems in the ARM-CART region; Modeling and Year-round Measurement  




Looking West
Site Characteristics
Latitude:36°56' N
Longitude:96°41' W
Project description/status:Summer 1996
Site description/history/status:Near Shidler, Oklahoma
~85% in tallgrass prairie
Elevation:350 meters
Stand age:Not applicable
Tower height: 
Canopy height: 
Ecosystem type:Prairie
Vegetation type:Little bluestem, Blue grama, Big bluestem, Indiangrass, Proverty dropseed
Growing season: 
Topography: 
Air temperature:14.65 degrees C/year, mean 1961-1990,
with a range of -4.1 to 33.4
Precipitation:881.1 mm/year, mean 1961-1990
Climate: 
Canopy description: 
Leaf area index: 
Wood increment: 
Stem density: 
DBH: 
Soil type/depth:Silty clay loam of Wolco-Dwight complex (thermic Pachic Argiustolls and mesic Typic Natrustolls)

Instrumentation Used to Measure Incoming and Reflected PAR

Instrumentation Used to Measure Canopy Transmitted and Soil Reflected PAR


Core Measurements:

The eddy covariance sensors are located at 4.5 meters.
ParameterInstruments
Sensible heat fluxSolent Gill anemometer
Latent heat flux3-D Solent Gill anemometer and Krypton hygrometer
Carbon dioxide flux3-D solent Gill anemometer and Li-Cor gas analyzer
Momentum flux3-D Solent Gill anemometer
Soil heat fluxREBS soil heat flux plates
Solar radiationEpply pyranometer
PARLi-Cor PAR quantum sensor
Net radiationREBS Net Radiometer, Q6
Air temperatureVaisala, HMP 35 C (RTD)
Vapor pressureVaisala, HMP 35 C
Wind speedMet One, 010C
Wind directionMet One wind vane
PrecipitationTipping bucket, TE 525
Atmospheric pressureCampbell Scientific Barometer, CS 105
Soil temperatureThermistor


Ancillary Measurements:
ParameterInstruments
Soil moisture 
Leaf area index 
Canopy height 
Biomass 
Leaf nitrogen content 


Relevant Links:


*Carbon Dioxide And Energy Fluxes In Native Tallgrass Prairie And Wheat Ecosystems
*Canopy Bidirectional Reflectance and Related Field Measurements in Native Tallgrass Prairie and Wheat Ecosystems in Oklahoma
FLUXNET      
Updated by Susan Holladay and Tom Boden on March 9, 2000