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Runoff and erosion at the micro-plot and slope scale in a small burnt catchment...
Vieira, D.; Keizer, J.; Nunes, J.; Fernandes I.; Faria, S.; Ferreira, R.; Pedrosa, E.; Varela, M.; Gomes Pereira, L.Wildfires can have important impacts on hydrological processes and soil erosion in forest catchments, due to the destruction of vegetation cover and changes to soil properties. However, the processes involved are non-linear and not fully understood. This has severely limited the understanding on the impacts of wildfires, especially in the up-scaling from hillslopes to catchments; in consequence, current models ...
Runoff and erosion in a small burnt catchment in central Portugal
Vieira, D.; Keizer, J.; Nunes, J.; Fernandes, I.; Faria, S.; Ferreira, R.; Varela, M.; Gomes Pereira, L.Post-fire erosion is a major concern because of its potential effects on soil and water resources. Wildfire is frequently observed to increases soil erosion rates (Shakesby and Doerr, 2006). Many studies have emphasized the role of the partial or entire elimination of vegetation and ground cover (thereby exposing the mineral soil to direct impact of raindrops and overland flow) as a key factor in the increased ...
The study of soil, hydrological, erosion and vegetation processes following wil...
Keizer, J.; Nunes, J.; Sande Silva, J.; Gomes Pereira, L.; Vieira, D.; Varela, M.; Prats, S.; Pinheiro, J.; Pereira, V.; Mendes, H.; Malvar, M.The EROSFIRE-II project (PTDC/AGR-CFL/70968/2006) has as overall aim to predict soil erosion risk in recently burnt forest areas, including following common post-fire forest management practices. Although the project’s main focus is on onsite erosion processes, also the export of sediments out of small catchments is addressed. To this end, a study area of about 60 ha located near to the village of Colmeal (...
Runoff at the micro-plot and slope scale following wildfire, central Portugal
Vieira, D.; Keizer, J.; Nunes, J.; Fernandes, I.; Faria S.; Ferreira, R.; Pedrosa, E.; Varela, M.; Pereira, L.Through their effects on soil properties and vegetation/litter cover, wildfires can strongly enhance overland flow generation and accelerate soil erosion [1] and, thereby, negatively affect land-use sustainability as well as downstream aquatic and flood zones. Wildfires are a common phenomenon in present-day Portugal, devastating in an average year some 100.000 ha of forest and woodlands and in an exceptional y...
Solving cell infiltration limitations of electrospun nanofiber meshes for tissu...
Guimarães, Ana; Martins, Albino; Pinho, Elisabete D.; Faria, S.; Reis, R. L.; Neves, N. M.AIM: Utilize the dual composition strategy to increase the pore size and solve the low cell infiltration capacity on random nanofiber meshes, an intrinsic limitation of electrospun scaffolds for tissue engineering applications. MATERIALS & METHODS: Polycaprolactone and poly(ethylene oxide) solutions were electrospun simultaneously to obtain a dual composition nanofiber mesh. Selective dissolution of the poly(et...
Estirpes de rizóbio eficientes na fixação biológica de nitrogênio para legumino...
LASTE, K. C. D.; GONÇALVES, F. S.; FARIA, S. M. deEste trabalho teve como objetivo selecionar estirpes de rizóbio eficientes na fixação biológica de nitrogênio para leguminosas herbáceas de crescimento rápido e sistema radicular profuso Tephrosia adunca e Mimosa xanthocentra. ; 2008 ; Parceria; UFRRJ.
Indicação de estirpes de rizóbio eficientes na fixação biológica de nitrogênio ...
FARIA, S. M. de; UCHOAS, E. da S.2007
"Beta-rizóbios": os novos simbiontes encontrados em espécies de Mimosa.
REIS JÚNIOR, F. B. dos; FARIA, S. M. de; MENDES, I. de C.; SIMON, M. F.; LOUREIRO, M. de F.; ELLIOT, G. N.; YOUNG, P.; SPRENT, J. I.; JAMES, E. K.The fixation and transformation of atmospheric dinitrogen into ammonia and hence into organic e compounds is a crucial part of the nitrogen cycle. Nitrogenase, the enzyme responsible, has a wide taxonomie distribution in the bacteria and archaea, but is confined to a limited number of species. Among these, rhizobia, whieh form nodules on the roots of legumes, are recognised as the main contributors of biologiea...
Nodulação em espécies leguminosas da região de Porto Trompetas, Oriximiná, Esta...
FARIA, S. M. de; LIMA, H. C. de; RIBEIRO, R. D.; CASTILHO, A. F.; HENRIQUES, J. C.2006
Seleção de estirpes de rizóbio para sansão preto (Mimosa sp.), dormideira compr...
UCHÔAS, E. da S.; FARIA, S. M. de.2006
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