---
access_dt: ~
aliases:
  - context: dataset
    lexicon: ornl
    term: oai:mercury-ops2.ornl.gov:ornldaac_191
    url: http://mercury.ornl.gov/oai/provider?verb=GetRecord&metadataPrefix=oai_dif&identifier=oai:mercury-ops2.ornl.gov:ornldaac_191
  - context: dataset
    lexicon: ornl
    term: oai:mercury.ornl.gov:ornldaac_191
    url: http://mercury.ornl.gov/oai/provider?verb=GetRecord&metadataPrefix=oai_dif&identifier=oai:mercury.ornl.gov:ornldaac_191
attributes: ~
cite_metadata: ~
cited_by: []
contributors:
  - display_name: 'Data Archive : Oak Ridge National Laboratory Distributed Active Archive Center '
    href: http://52.38.26.42:8080/contributor/4097.yaml
    id: 4097
    organization:
      country_code: US
      display_name: Oak Ridge National Laboratory Distributed Active Archive Center
      identifier: oak-ridge-national-laboratory-distributed-active-archive-center
      name: Oak Ridge National Laboratory Distributed Active Archive Center
      organization_type_identifier: federal
      type: organization
      url: http://daac.ornl.gov
    organization_uri: /organization/oak-ridge-national-laboratory-distributed-active-archive-center
    person: {}
    person_id: ~
    person_uri: ~
    role_type_identifier: data_archive
    uri: /contributor/4097
data_qualifier: ~
description: 'ABSTRACT: This data set contains two ASCII text files; one providing above-ground biomass, productivity, and bioelement concentration data for a derived savanna at Cañas (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 Cañas 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 Cañas 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 Cañas 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.'
description_attribution: http://daac.ornl.gov//NPP/guides/NPP_CNS.html
display_name: 'NPP Grassland: Canas, Costa Rica, 1969-1970, R1'
doi: 10.3334/ORNLDAAC/191
end_time: 1970-06-14T00:00:00
files: []
href: http://52.38.26.42:8080/dataset/nasa-ornldaac-191.yaml
identifier: nasa-ornldaac-191
instrument_measurements: []
lat_max: 10.4
lat_min: 10.4
lon_max: -85.1
lon_min: -85.1
name: 'NPP Grassland: Canas, Costa Rica, 1969-1970, R1'
native_id: NPP_CNS
parents: []
processing_level: ~
publication_year: ~
references: []
release_dt: 2013-01-01T00:00:00
scale: ~
scope: ~
spatial_extent: ~
spatial_ref_sys: ~
spatial_res: ~
start_time: 1969-07-10T00:00:00
temporal_extent: ~
temporal_resolution: ~
type: dataset
uri: /dataset/nasa-ornldaac-191
url: http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=191
variables: ~
version: ~
vertical_extent: ~