Skip to main content
ORNL DAAC HomeNASA Home

DAAC Home > Get Data > Regional/Global > Net Primary Productivity (NPP) > Data Files

NPP Grassland: Bridger, USA, 1970-1973, R1

Overview

Data setNPP Grassland: Bridger, USA, 1970-1973, R1
DOIhttps://doi.org/10.3334/ORNLDAAC/205
Release date2013-11-12
ProjectNet Primary Productivity (NPP)
Time period1894-01-01 to 1994-12-31

Usage Metrics

CountEarliest DateLatest DateData Usage
Citations520022015Publications citing this data set
Downloads2512007-12-062017-04-251233 total files downloaded

Description

This data set contains three ASCII text files for the Bridger grassland study site in the Rocky Mountains (45.78 N, -110.78 W, Elevation 2,340 m). Two files contain above- and below-ground biomass data, one for each treatment (ungrazed and moderately grazed). The third file contains climate data from the Big Timber weather station (45.80 N, -110.00 W, Elevation 1,249 m) near Bridger. Dynamics of above- and below-ground plant biomass were monitored by harvest technique at roughly 2-week intervals during the growing season for the years 1970, 1972, and 1973. Data on above-ground live biomass, standing dead matter, and litter are provided for each sampling date. Below-ground biomass (roots and crowns) are provided for 0-30 cm and 0-50 cm depths. 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). Above-ground net primary production (ANPP) was estimated, conservatively, by summing peak biomass of individual species. Below-ground net primary production (BNPP) was estimated as the sum of positive increments in total root biomass (including root crowns). Values varied according to treatment. Revision Notes: Only the documentation for this data set has been modified. The data files have been checked for accuracy and are identical to those originally published in 1998.

Data set documentation

Citation

Download citation from Datacite
RISBibTexOther
Crosscite Citation Formatter
Weaver, T.W., and D.D. Collins. 2014. NPP Grassland: Bridger, USA, 1970-1973, R1 . ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/205

See our Data Citations and Acknowledgements policy for more information.

Data Files

Sign in to download data set files.

Data File (Granule)File SizeDates
brd1_npp.txt 3.1KB 1970-06-30 to 1973-09-18
brd_cli.txt 38.0KB 1894-01-01 to 1994-12-31
brd2_npp.txt 2.7KB 1970-06-29 to 1972-11-08

Companion Files

Expand for companion files
Toggle Companion Files

Sign in to download companion files.

Data set has 1 companion files.

  • NPP_BRD.pdf