Results 131 to 140 of about 504 (165)
Climate change, food insecurity, and the impacts on child health and nutrition in Brazil: proposal for a conceptual model. [PDF]
Cad Saude PublicaSantos-Degner LA +8 more
europepmc +1 more source
Transformation of tall-tussock grasslands and soil water dynamics in the Flooding Pampa
Science of the Total Environment, 2023 Cow-calf production is the main practice within marginal agricultural lands of the world, like the Flooding Pampa of Argentina, where it promotes the transformation of native tall-tussock grasslands Paspalum quadrifarium into native short-grass grasslands or sown pastures.
Sebastian Horacio Villarino +2 more
exaly +6 more sources
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Floristic heterogeneity of flooding Pampa grasslands: a multi-scale analysis
Plant Biosystems, 2005Abstract The present paper describes vegetation heterogeneity at contrasting spatial scales in order to analyse patterns of floristic diversity and vegetation – environment relations in the Flooding Pampa grasslands of Argentina. The overall grassland flora contains a large proportion of exotic species, which are mostly annual forbs.
R J C Leon
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Structural stability changes in a grazed grassland natraquoll of the Flooding Pampa (Argentina)
Wetlands, 1999Several factors affecting soil structural stability interact in the natural grasslands of the Flooding Pampa (Argentina). This seasonal and flat wetland (usually ponded in winter-spring and dry in summer) has swelling soils, which are affected by seasonal increases in sodium, and continuous grazing by cattle.
MIGUEL A Taboada, Raúl S Lavado
exaly +2 more sources
Soil Use and Management, 1987
Abstract. The salt regimes in soil under grazed and ungrazed natural grassland were compared on a Natraquoll in the Flooding Pampa of Argentina. The salt concentration in the topsoil of the grazed land increased sharply and episodically after flooding, whereas in the ungrazed land it did not.
Raúl S Lavado, MIGUEL A Taboada
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Abstract. The salt regimes in soil under grazed and ungrazed natural grassland were compared on a Natraquoll in the Flooding Pampa of Argentina. The salt concentration in the topsoil of the grazed land increased sharply and episodically after flooding, whereas in the ungrazed land it did not.
Raúl S Lavado, MIGUEL A Taboada
exaly +2 more sources
Applied Vegetation Science, 2003
Abstract. Winter and spring burnings constitute a traditional management practice of the Flooding Pampa grasslands which are dominated by the tussock grass Paspalum quadrifarium. In addition to increasing the primary productivity and the nutrient quality of the regrowth, this burning favours the establishment of opportunistic species, especially the ...
Pedro Laterra
exaly +3 more sources
Abstract. Winter and spring burnings constitute a traditional management practice of the Flooding Pampa grasslands which are dominated by the tussock grass Paspalum quadrifarium. In addition to increasing the primary productivity and the nutrient quality of the regrowth, this burning favours the establishment of opportunistic species, especially the ...
Pedro Laterra
exaly +3 more sources
Are bufonid toads specialized ant-feeders? A case test from the Argentinian flooding pampa
Journal of Natural History, 2002Several causes have been considered to explain the specialized ant-feeder habits of the bufonids. We analysed the diet and availability of prey items for sympatric Bufo arenarum, Bufo dorbignyi and Odontophrynus americanus living in a grassland of the flooding pampa, Argentina.
Juan Pablo Isacch, Mónica Barg
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Non‐exchangeable ammonium behavior of a grassland soil of the flooding Pampa under waterlogging
Communications in Soil Science and Plant Analysis, 1994Abstract A representative grassland soil of the lowland areas of the Flooding Pampa (Argentina) was sampled to study the dynamics of the non‐exchangeable ammonium under waterlogging conditions. Most of the external factors determining fixed ammonium release and fixation were considered. There was no net release of ammonium from the clay fixing‐sites to
Gerardo Rubio, R S Lavado
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Promotion of Lotus tenuis in the Flooding Pampa (Argentina) increases the soil fungal diversity [PDF]
Fungal Ecology, 2018 Abstract Forage promotion is an increasingly used agricultural practice that requires herbicide application to remove competing plant species. This work examined the effect of the forage legume Lotus tenuis on the fungal community composition at three sites of the Flooding Pampa, Argentina.
Amira Susana Nieva +5 more
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