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- Havstad, K., et al. Show all 4 Authors
- Journal of arid environments 2005 v.60 no.3 pp. 423
- deserts; arid zones; grasslands; Bouteloua eriopoda; C4 plants; carbon dioxide; gas exchange; evapotranspiration; precipitation; temporal variation; New Mexico
- ... We measured CO₂ and evapotranspiration (ET) fluxes above a Chihuahuan desert grassland from 1996 through 2001. Averaged across six years, this ecosystem was a source (positive flux) of CO₂ in every month. Over that period, sustained periods of carbon uptake (negative flux) were rare. Averaged across all months, we estimated that CO₂ was being released into the atmosphere at a rate of +1.5 g CO₂ m⁻ ...