5 documents found, page 1 of 1
Impacts of distinct spatial arrangements of impervious surfaces on runoff and s...
Ferreira, C. S. S.; Moruzzi, R.; Isidoro, Jorge M. G. P.; Tudor, M.; Vargas, M.; Ferreira, A. J. D.; de Lima, J. L. M. P.Urbanization affects runoff processes and sediment transport, but the magnitude of the impacts remains poorly understood. Different spatial patterns of pervious and impervious surfaces influence flow and sediment connectivity between hillslopes and stream networks. Following years of research on the peri-urbanizing Ribeira dos Covoes catchment in Portugal, this study uses laboratory rainfall simulation experime...
Spatiotemporal variability of hydrologic soil properties and the implications f...
Ferreira, C. S. S.; Walsh, R. P. D.; Steenhuis, T. S.; Shakesby, R. A.; Nunes, J. P. N.; Coelho, C. O. A.; Ferreira, A. J. D.Planning of semi-urban developments is often hindered by a lack of knowledge on how changes in landuse affect catchment hydrological response. The temporal and spatial patterns of overland flow source areas and their connectivity in the landscape, particularly in a seasonal climate, remain comparatively poorly understood. This study investigates seasonal variations in factors influencing runoff response to rain...
Water repellency of air-dried and sieved samples from limestone soils in centra...
González-Pelayo, O.; Gimeno-García, E.; Ferreira, C. S. S.; Ferreira, A. J. D.; Keizer, J. J.; Andreu, V.; Rubio, J. L.Aims Soil water repellency (SWR) in Mediterranean sub-humid environments is poorly studied in soils derived from basic bedrock. This study addressed this gap by comparing SWR in soil samples collected before/ after a prescribed burning in a Mediterranean shrubland overlaying limestone. Methods Sampling was performed on two adjacent slopes (NE/SW) underneath Quercus coccifera, Pistacia lentiscus, Arbutus unedo s...
Mitigating land degradation caused by wildfire: application of the PESERA model...
Esteves, T. C. J.; Kirkby, M. J.; Shakesby, R. A.; Ferreira, A. J. D.; Soares, J. A. A.; Irvine, B. J.; Ferreira, C. S. S.; Coelho, C. O. A.Wildfires represent an important agent of land degradation in temperate sub-humid ecosystems, including southern European Mediterranean countries. Identification of integrated conservation approaches that can reduce or prevent degradational impacts is the aim of the EU-funded DESIRE research program, part of which is concerned with quantifying the likely benefit of acceptable alternative conservation strategies...
A segurança alimentar em África: novas soluções baseadas em filosofias e ferram...
Ferreira, A. J. D.; Ferreira, CéliaA questão da segurança alimentar é particularmente sensível em áreas urbanas e peri-urbanas onde uma percentagem crescente da população se concentra. Nestas áreas o acesso à água e à terra é sempre problemática, e as condições sanitárias são particularmente más. A demanda da segurança alimentar requer a optimização das práticas agrícolas e a implementação de novas estratégias para aumentar a quantidade de água ...