6 documents found, page 1 of 1
Widespread hybridization between Invasive bleak (Alburnus alburnus) and Iberian...
Curto, M.; Morgado-Santos, M.; Alexandre, C.M.; Alves, M.J.; Gante, H.F.; Gkenas, C.; Medeiros, J.P.; Pinheiro, P.J.; Almeida, P.R.; Magalhães, M.F.Hybridization between native and nonnative fish species is a major conservation issue, especially in ecosystems with high levels of endemism, such as Iberian streams. To date, hybridization with the invasive bleak Alburnus alburnus has been reported for the Iberian chub Squalius alburnoides and S. pyrenaicus and in scattered locations only. However, the bleak is spreading in the region, potentially increasing t...
Widespread hybridization between Invasive bleak (Alburnus alburnus) and Iberian...
Curto, M.; Morgado-Santos, M.; Alexandre, C.M.; Alves, M.J.; Gante, H.F.; Gkenas, C.; Medeiros, J.P.; Pinheiro, J.P.; Almeida, P.R.; Magalhães, M.F.Hybridization between native and nonnative fish species is a major conservation issue, especially in ecosystems with high levels of endemism, such as Iberian streams. To date, hybridization with the invasive bleak Alburnus alburnus has been reported for the Iberian chub Squalius alburnoides and S. pyrenaicus and in scattered locations only. However, the bleak is spreading in the region, potentially increasing t...
Quinze anos de monitorização das comunidades biológicas do estuário do Tejo no ...
Costa, J.L.; Silva, G.; Medeiros, J.P.; Sá, E.; Tavares, M.J.; Almeida, P.R.; Sousa, A.; Lopes, N.; Freitas, C.; Costa, M.J.; Cabral, H.Desde 2001 que a Câmara Municipal de Almada tem vindo a promover, em colaboração com o MARE, a monitorização ambiental das regiões estuarinas sob influência das ETARs do Portinho da Costa e da Mutela, que vieram substituir efluentes não tratados emitidos sensivelmente nas mesmas regiões. O objetivo deste programa de monitorização consiste em avaliar as principais alterações ocorridas (na maioria dos casos posit...
DNA barcoding: an effective tool to overcome morphological identification const...
Medeiros, J.P.; Weisberg, S. B.; Alves, M.J.; Stein, E.; Gillett, D.; Chainho, P.; Costa, J.L.; Adão, H; Costa, M:JDNA barcoding has the potential to overcome taxonomic challenges in biological community assessments. However, fulfilling that potential requires successful amplification of a large and unbiased portion of the community. In this study, we attempted to identify mitochondrial gene cytochrome c oxidase I (COI) barcodes from 1024 benthic invertebrate specimens belonging to 54 taxa from low salinity environments of ...
Inter-annual variations of macrobenthic communities over three decades in a lan...
Correia, M.J.; Costa, J.L.; Chainho, P.; Félix, P.M.; Chaves, M.L.; Medeiros, J.P.; Silva, G.; Azeda, C.; P. Tavares, P.; Costa, A.; Costa, A.M.Santo André is an enclosed brackish water coastal lagoon with temporary connections to the sea by a man-made channel. The exchange and mixture of saltwater and freshwater is irregular and the lagoon may show daily and seasonal fluctuations, but also long-term variation. Different benthic communities may be present along the annual cycle according to the magnitude of episodic freshwater and sea water inputs. In ...
Macroinvertebrates and fishes as biomonitors of heavy metal concentration in th...
Caçador, I.; Costa, J.L.; Duarte, B.; Silva, G.; Medeiros, J.P.; Azeda, C.; Castro, N.; Freitas, J.; Pedro, S.; Almeida, Pedro R.; Cabral, H.The present study aims to evaluate the utilization of several benthic macroinvertebrate and fish species as bioindicators of heavy metal contamination in a relatively enclosed estuarine area, the Seixal Bay (Tagus estuary, Portugal). 266 specimens of 16 taxa were captured during four sampling campaigns and the concentration of lead, chromium, nickel, copper, zinc, cobalt and cadmium were quantified in fish musc...