4 documents found, page 1 of 1
First representation of the trophic structure and functioning of the Portuguese...
Veiga-Malta, T.; Szalaj, D.; Angelico, M. M.; Azevedo, M.; Farias, I; Garrido, S.; Lourenco, S.; Marçalo, Ana; Marques, V; Moreno, A.; Oliveira, P. B.In this study, we analysed the structure and functioning of the Portuguese continental shelf ecosystem and investigated the role of sardine Sardina pilchardus using the Ecopath massbalance approach. An Ecopath model was configured to represent the continental shelf waters in the period 2006-2009. The model showed that biomass was concentrated in low and intermediate trophic levels as in other upwelling areas. S...
Toxic Element Concentrations in the Razorbill Alca torda (Charadriiformes, Alci...
Ribeiro, A. R.; Eira, C.; Torres, J.; Mendes, P.; Miquel, J.; Soares, A. M. V. M.; Vingada, J.The present study provides the first data on inorganic element levels (As, Cd, Co, Cr, Cu, Hg, Mn, Pb, Se, and Zn) in juvenile, immature, and adult razorbills (Alca torda) collected along the central coast of Portugal. Element concentrations were assessed by ICP-MS in kidney, liver, muscle, and feathers of 28 razorbills, including 4 juveniles, 17 subadults, and 7 adults. The effect of age and tissue on element ...
Trace element concentrations in Proteocephalus macrocephalus (Cestoda) and Angu...
Eira, C.; Torres, J.; Miquel, J.; Vaqueiro, J.; Soares, A. M. V. M.; Vingada, J.The use of some fish parasites as bioindicators of heavy metal pollution has been demonstrated as particularly adequate due to their capacity of bioconcentration. This study evaluated the effect of Proteocepholus macrocephalus on the accumulation of trace elements in the edible fish, Anguilla anquilla, in a contaminated area in Portugal (Ria de Aveiro). Also, the model P. macrocephalus/A. anquilla was assessed ...
Toxic element concentration in the Atlantic gannet Morus bassanus (Pelecaniform...
Mendes, P.; Eira, C.; Torres, J.; Soares, A. M. V. M.; Melo, P.; Vingada, J.The present study provides the first data on inorganic element levels in juvenile, subadult, and adult Atlantic gannets (Morus bassanus). Physiological and potentially toxic elements (As, Cd, Co, Cr, Cu, Hg, Mn, Pb, Se, and Zn) were assessed by ICP-MS in kidney, liver, muscle, and feathers of 31 gannets, including 18 juveniles, 7 subadults, and 6 adults. The effect of age and tissue on element accumulation was ...