NPP Grassland: Hays, U.S.A., 1970

Data Citation

Cite this data set as follows:

Hulett, G. K., and G. W. Tomanek. 1998. NPP Grassland: Hays, U.S.A., 1970. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A.

Description

Productivity of a mixed prairie grassland was monitored at the Hays study site during 1970. Dynamics of above-ground plant biomass were monitored at roughly 2-week intervals during the growing season. Data on above-ground ground live biomass, standing dead matter and litter are available, for two replications of a grazed and an "ungrazed" (relatively undisturbed) treatment. Total below-ground biomass was also sampled. Above-ground net primary production (ANPP) was estimated conservatively by summing peak biomass of individual species, and below-ground net primary production (BNPP) was estimated as the sum of positive increments in total root plus crown biomass.

Data were collected as part of a coordinated study over 1-3 years at ten grassland sites of the central and western United States, under the U.S. Grassland Biome Project of the International Biological Program (IBP).

The Hays study site (38.87 N 99.38 W) is situated in the central Great Plains, near the city of Hays, Kansas, about 400 km west of Kansas City. The Fort Hays branch station was established in 1906.

Contact Information

Contact: Dr. W. K. Lauenroth
Natural Resource Ecology Laboratory
Colorado State University
Fort Collins, Colorado 80523
U.S.A.

Telephone: +1 (970) 491-7581
Fax: +1 (970) 491-1965
E-mail: billl@cnr.colostate.edu

Alternative Contact: Dr. Gary K. Hulett
Department of Biology
Fort Hays State University
Fort Hays
Kansas 67601-4099
U.S.A.

Telephone: +1 (785) 628-5367
Fax: +1 (785) 628-4153
E-mail: bigh@fhsu.edu

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