NPP Grassland: Canas, Costa Rica, 1969-1970, R1

Description

This data set contains two ASCII text files; one providing above-ground biomass, productivity, and bioelement concentration data for a derived savanna at Canas (10.4 N 85.1 W Elevation 45 m) in northwestern Costa Rica, and the other providing climate data from the La Pacifica weather station near Canas and rom other sources. Monthly dynamics of above-ground plant matter were monitored from July 1969 to June 1970 using harvest procedures within an exclosure to restrict grazing. The climate data are available from three time periods: 1951-1960, 1963, and 1969-1970. The climate is characterized by a dry season from late November to April, with little seasonal differences in temperature. The Canas study site is dominated almost exclusively by Hyparrhenia rufa, a perennial grass of African origin introduced extensively throughout the tropics. The original vegetation cover was closed semideciduous forest. The study area was deforested and converted to a grass savanna around January 1947, 22.5 years before the start of the present study. Light grazing by cattle and horses is accompanied by burning of the Canas savanna annually between December and April. Above-ground net primary productivity (ANPP) was estimated by two methods: maximum standing crop of herbaceous shoot tissue (peak live + dead matter) (968 g/m2/year); and the sum of monthly estimates of shoot production (including estimated mortality) (1,387 g/m2/year). End-of-season (November, 1969) live root biomass estimates of 1,220 g/m2 at 0-20 cm depth and 2,254 g/m2 at 0-100 cm depth are available in the literature.

Resources

Name Format Description Link
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/npp/grassland/NPP_CNS/
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/NPP/guides/NPP_CNS.html
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F191
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/191
33 Data Set Documentation https://data.ornldaac.earthdata.nasa.gov/public/npp/grassland/NPP_CNS/comp/NPP_CNS.pdf
34 Browse Image https://daac.ornl.gov/graphics/browse/project/square/npp_logo_square.png

Tags

  • biosphere
  • ecological-dynamics
  • earth-science

Topics

Categories