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NPP Grassland: Media Luna, Argentina, 1981-1983, R1

Data Set Overview

Data setNPP Grassland: Media Luna, Argentina, 1981-1983, R1
Release date2014-09-11
ProjectNet Primary Productivity (NPP)
Time Period1981-01-01 to 1985-12-31


This data set contains two ASCII files (.txt format). One file provides monthly above-ground live biomass, dead matter, and litter data and daily above-ground net primary productivity (ANPP) data for a temperate grassland steppe at the Media Luna Ranch in Patagonia, Argentina (45.60 S, 71.42 W, Elevation 630 m) for the period May 1981 to March 1983. The second file contains climate data recorded at Media Luna Ranch from 1981 through 1985. Productivity of the steppe was monitored at monthly or bi-monthly intervals during two growing seasons. The ANPP measurement presented here is the sum of the increase in above-ground live biomass, dead matter, and litter. ANPP was estimated to be 0.00-0.15 g/m2/day in winter months (May-September) and 0.22-0.94 g/m2/day in the warmer months. Annual ANNP was estimated to be 35 g/m2/year. The study site is a 2.5-hectare exclosure situated on the Rio Mayo terraces. The steepe represents one of the most important grassland areas of Patagonia which occupy a narrow belt in the foothills of the Andes. The region has been over-grazed by introduced livestock since the early 1900s, and is currently used for sheep production.


Data set reference document


Defosse, G.E., and M.B. Bertiller. 2014. NPP Grassland: Media Luna, Argentina, 1981-1983, R1. ORNL DAAC, Oak Ridge, Tennessee, USA.
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Net Primary Productivity (NPP): NPP (net primary production) data from existing field measurements are being compiled for approximately 100 study sites covering several major world ecosystem types. These data are used by global change modelers to develop and validate models of vegetation-soil-atmosphere interactions within the global carbon cycle and to help calibrate remote sensing of vegetation worldwide

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  • NPP_MDL.pdf

Data Files

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Data File (Granule)File SizeDates
mdl_cli.txt 3.3 KB 1981-05-21 - 1983-03-20
mdl_npp.txt 2.2 KB 1981-05-21 - 1983-03-20


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