4 documents found, page 1 of 1
Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast:...
Torres-Pereira, Andreia; Araújo, Hélder; Monteiro, Silvia Silva; Ferreira, Marisa; Bastos-Santos, Jorge; Sá, Sara; Nicolau, Lídia; Marçalo, AnaThe Iberian harbour porpoise population is small and fisheries bycatch has been described as one of its most important threats. Data on harbour porpoise strandings collected by the Portuguese and Galician stranding networks between 2000 and 2020 are indicative of a recent mortality increase in the western Iberian coast (particularly in northern Portugal). Overall, in Portugal and Galicia, individuals stranded d...
Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Wes...
Araújo, Hélder; Rodrigues, Pedro; Bastos-Santos, Jorge; Ferreira, Marisa; Pereira, Andreia; Martínez-Cedeira, José; Vingada, José; Eira, CatarinaSeveral North Atlantic breeding seabirds, such as the Northern Gannet Morus bassanus, use Western Iberian Waters for wintering and migration. In this study, we aimed at producing absolute population estimates of post-breeding Gannets and evaluating the importance of the study area within the species’ migration range. We performed six aerial surveys in September and/or October each year between 2010 and 2015, co...
Striped dolphins as trace element biomonitoring tools in oceanic waters: accoun...
Monteiro, Sílvia S.; Bozzetti, Márcia; Torres, Jordi; Tavares, Ana S.; Ferreira, Marisa; Pereira, Andreia T.; Sá, Sara; Araújo, HélderIn Europe, monitoring contaminant concentrations and their effects in the marine environment is required under the Marine Strategy Framework Directive (MSFD, 2008/56/EC). The striped dolphin (Stenella coeruleoalba) is the most abundant small cetacean species in Portuguese oceanic waters, representing a potential biomonitoring tool of contaminant levels in offshore waters. Concentrations of nine trace elements w...
The importance of Portuguese Continental Shelf Waters to Balearic Shearwaters r...
Araújo, Hélder; Bastos-Santos, Jorge; Rodrigues, Pedro Correia; Ferreira, Marisa; Pereira, Andreia; Henriques, Ana Catarina; Monteiro, Sílvia S.The Balearic shearwater Puffinus mauretanicus is one of the most threatened seabirds in the world. To evaluate the abundance and distribution of Balearic Shearwaters in Portuguese Continental Shelf Waters, during the post-breeding period when migrating birds are outside the Mediterranean Sea, we conducted 5 aerial surveys between 2010 and 2014 (21 survey days covering 62,716 km2). Following a line transect meth...