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Tracing anthropogenic Hg and Pb input using stable Hg and Pb isotope ratios in ...

Large spill of mining wastes in Portelo stream: impacts on ecosystem integrity ...

Streams located at Montesinho Natural Park (NE Portugal) have high potential for brown trout (Salmo trutta) angling. However, in this territory there are several abandoned mine sites. Therefore, the continuous drainage of fine grained tailings can be particularly problematic due to arsenic, copper, aluminium and zinc. However, until now no significant disturbance was detected in water quality and in biota. Neve...

Large spill of mining wastes in Portelo stream: impacts on ecosystem integrity ...

Streams located at Montesinho Natural Park (NE Portugal) have high potential for brown trout (Salmo trutta) angling . However, in this territory there are severa! abandoned mine sites. Therefore, the continuous drainage of fine grained tailings can be particularly problematic due to arsenic, copper, aluminium and zinc. However, until now no significant disturbance was detected in water quality and in biota. Nev...

Recente colapso das escombreiras das minas do Portelo (NE Portugal) e impactos ...

Em Janeiro de 2010 uma grande parte dos materiais armazenados nas escombreiras da mina do Portelo foi arrastada para a ribeira do Portelo. O objectivo do presente estudo foi avaliar o processo de recuperação da ribeira afectada por este acontecimento. Amostras de água e de macroinvertebrados foram recolhidas mensalmente entre Janeiro e Julho de 201 o em 4locais de amostragem: um local não influenciado pela entr...

I2C Verification suite

Tese de mestrado integrado. Engenharia Electrotécnica e de Computadores. Faculdade de Engenharia. Universidade do Porto. 2010

Emove Innovative Technologies, Lda: Emove Waves

A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economics

A certificação florestal como instrumento político

Mestrado em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia ; Forest certification is a voluntary market-based instrument that emerged in the 1990’s. Forest certification systems are sustained through consumer support to ensure that forest products meet their standards and regulations, from the forest, through the supply chain, to its end use. These systems maintain credibility t...

Histological biomarkers in liver and gills of juvenile Solea senegalensis exposed

Young juvenile Solea senegalensis were exposed to three sediments with distinct contamination profiles collected from a Portuguese estuary subjected to anthropogenic sources of contamination (the Sado estuary, western Portugal). Sedimentswere surveyed formetals (cadmium, chromium, copper, nickel, lead and zinc), ametalloid (arsenic) and organic contaminants (polycyclic aromatic hydrocarbons, polychlorinated bip...

Biochemical endpoints on juvenile Solea senegalensis exposed

Juvenile Solea senegalensis were exposed to fresh sediments from three stations of the Sado estuary (Portugal) in 28-day laboratory assays. Sediments revealed distinct levels of total organic matter, fine fraction, redox potential, trace elements (arsenic, cadmium, chromium, copper, nickel, lead and zinc) and organic contaminants (polycyclic aromatic hydrocarbons, polychlorinated biphenyls and a pesticide: dich...

Mobility of contaminants in relation to dredging operations in a mesotidal estu...

http://apps.isiknowledge.com/full_record.do?product=UA&search_mode=GeneralSearch&qid=9&SID=T2n6@BOd@6lKkDK3EB3&page=1&doc=1&colname=WOS ; During the construction of a New Bridge over the Tagus estuary 2.5 million tons of sediments were dredged, part of this quantity being contaminated material. The extension and intensity of the water turbidity associated with dredging operating varied with the tidal condition...