Data Citation

Bertiller, M. 1998. NPP Grassland: Pampa De Leman, Argentina, 1980-1982. 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

An area of 1.5 hectares was protected from sheep grazing at the study site, comprising a community of prostrate vegetation with low ground cover (10-20%), dominated by the dwarf shrub Nassauvia glomerulosa, with two grasses (Poa dusenii and Hordeum comosum). The Pampa de Leman site was located on an alluvial terrace of the Senguerr river (45.43 S 69.83 W), in an arid region characterised by continental dry westerly winds which tend to produce soil erosion. Erosion was exacerbated by the introduction of domestic sheep to the area around 1900, upsetting the equilibrium which previously existed between vegetation and native herbivores.

Monthly/bi-monthly data on above ground live biomass (>90% of which is accounted for by the dominant shrub species), together with recent standing dead matter (yellow), standing dead (grey) and litter, are available for two growing seasons from 1980 to 1982 (N.B.: Southern Hemisphere growing seasons). However, climate data for this site are limited to measurements made for the duration of the study.

Contact Information

Tel. +54 (965) 51024
Fax +54 (965) 51543
E-mail: bertil@cenpat.edu.ar

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