Water resources in the semi-arid Pampa–Patagonia transitional region of Argentina

Evapotranspiration of the Brazilian Pampa Biome: Seasonality and Influential Factors

“…Krishnan et al [8] reported a study in a semiarid pasture in North America where precipitation explained more than 80% of the variance in annual evapotranspiration. Paoloni et al [53] found on the Argentina Pampa an accumulated annual ET act of 1220 mm year −1 , around 35% greater than in the Brazilian Pampa. For other Brazilians biomes, Goulart et al [54] reported a cumulative ET of 1337.5 mm year −1 for the Pantanal, Shuttleworth [55] obtained annual ET of 1393 mm year −1 for the Amazon forest, and Almeida [56] reported 1350 mm year −1 for the Atlantic Forest biome.…”

Distribution of diatoms and mollusks in shallow lakes from the semiarid Pampa region, Argentina: Their relative paleoenvironmental significance

“…The study was carried out in the northeast of La Pampa province (Appendix 1, electronic version only), a semiarid area of climatic transition between the humid Pampas and the Patagonian steppe (Paoloni et al, 2003). The semiarid climate characteristic of this region prevent the development of an autochthonous hydrographic net.…”

Burrowing herbivores alter soil carbon and nitrogen dynamics in a semi-arid ecosystem, Argentina

“…Thus, the relatively high and seasonally stable NO 3 À concentrations in burrows likely originated from accumulation of pulsed mineralization events over time (e.g., Mazzarino et al, 1998;Austin et al, 2004;Yahdjian and Sala, 2010), rather than continuously high in situ rates of net N min . Because potential evaporation exceeds precipitation in this semi-arid region (Paoloni et al, 2003), leaching losses are reduced and NO 3 À accumulation occurs in the absence of plant uptake or microbial immobilization (Mazzarino et al, 1998;Walvoord et al, 2003;Reichmann et al, 2013). Net N min in soil from colonial burrows increased dramatically at soil moisture contents greater than 25% field capacity at both temperatures during laboratory incubations.…”