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Impact of different irrigation methods on the main chemical characteristics of ...
Telo da Gama, José; López-Piñeiro, António; Loures, Luis; Nunes, José RatoThe sustainable management of Mediterranean agricultural soils, characterized by salinization and low organic matter content, requires a thorough understanding of their temporal and spatial evolution. The focal point of this investigation encompasses an area of 6769 ha within the Portuguese Mediterranean basin, from which as many as 686 topsoil specimens were acquired during the periods 2001/2002 and 2011/2012 ...
Seasonal and interannual fluctuation of the microbial soil community in a maize...
Ramirez, Manuel; López-Piñero, Antonio; Peña, David; Nunes, José Rato; Albarrán, Ángel; Munoz, Ana; Gama, José; Loures, LuísSoil’s microbiological settlement in a Zea mays parcel under long-term agricultural practices aiming to minimize the disruption of the soil’s structure, composition and natural biodiversity was analyzed by culture-dependent and culture-independent processes. Of the different processes, morphological-type differentiation of cultured microflora produced the best results and, while Polymerase Chain Reaction (PCR)-...
Evaluation of the microbial viability of soil samples from maize crops in freez...
Ramirez, Manuel; Munoz, Ana; López-Piñero, Antonio; Albarrán, Ángel; Peña, David; Nunes, José Rato; Gama, José; Loures, LuísThe effect of freeze-storage on culturable soil microorganism viability was determined for soil samples from three agricultural maize crop systems (under conventional management, direct seeding, and direct seeding with a cover crop). Most culturable soil bacteria were unaffected by the freeze-thaw stress or the prolonged freeze-storage, but the viability of mold and Bacillus mycoides populations decreased drast...
Concentrations of available heavy metals in Mediterranean agricultural soils an...
Nunes, José Rato; Ramos-Miras, José; Lopez-Pineiro, António; Loures, Luís; Gil, Carlos; Coelho, José; Loures, AnaThe characterization of the content of trace metals in soils is an instrument in many programs of environmental protection, including the establishment of regional-level standards to detect sites affected by contamination. The objectives of the present study were to study the available levels of Cd, Cr, Cu, Ni, Pb, and Zn in surface horizons of agricultural soils in a typical European Mediterranean region, to e...
Concentrations of available heavy metals in Mediterranean agricultural soils an...
Nunes, José Rato; Ramos-Miras, José; Lopez-Piñeiro, António; Loures, Luís; Gil, Carlos; Coelho, José; Loures, AnaThe characterization of the content of trace metals in soils is an instrument in many programs of environmental protection, including the establishment of regional-level standards to detect sites affected by contamination. The objectives of the present study were to study the available levels of Cd, Cr, Cu, Ni, Pb, and Zn in surface horizons of agricultural soils in a typical European Mediterranean region, to e...
A aplicação de métodos diretos e indiretos de avaliação da paisagem na valoraçã...
Viegas, Ana Lúcia; Loures, Luís; Nunes, José RatoA componente estética constitui um atributo indispensável para um melhor entendimento da paisagem. O presente estudo analisa a qualidade estética e a valoração económica da paisagem fluvial do Baixo Guadiana, através da aplicação de métodos diretos e indiretos de avaliação da paisagem, suportados pela realização de questionários de participação pública. Pretende-se aferir a opinião de especialistas e também de ...