16 documents found, page 1 of 2
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...
A matter of scales: Does the management of marine recreational fisheries follow...
Pita, Pablo; Villasante, Sebastian; Arlinghaus, Robert; Gomes, Pedro T.; Strehlow, Harry V.; Veiga, Pedro; Vingada, José V.; Hyder, KieranEuropean policy-makers are increasingly aware of the ecological and socioeconomic relevance of marine recreational fisheries (MRF), but there are still gaps in, the information needed to achieve sustainable management. How is the current management of European MRF performed? Is it promoting the Ecosystem Approach to Fisheries (EAF)? The management of MRF in Europe was reviewed by analyzing how different Europea...
Economic, social and ecological attributes of marine recreational fisheries in ...
Pita, Pablo; Hyder, Kieran; Gomes, Pedro T.; Pita, Cristina; Rangel, Mafalda; Veiga, Pedro; Vingada, José V.; Villasante, SebastianThere are growing concerns about the impact of Marine Recreational Fishing (MRF) on marine ecosystems and its combined effects with other human activities, such as commercial fishing, especially on the higher trophic levels. Conversely, recreational fishers provide considerable economic benefits through their expenditure on many things including fishing tackle, boats, licenses, travel, and accommodation. Howeve...
Research and management priorities for Atlantic marine recreational fisheries i...
Pita, Pablo; Artetxe, Inaqui; Diogo, Hugo; Gomes, Pedro T.; Gordoa, Ana; Hyder, Kieran; Pereira, Joao; Pita, Cristina; Rangel, MafaldaMarine Recreational Fishing (MRF) is an important activity in Europe, with 9 million fishers and generating annually 6 billion in direct expenditures. However, there is a lack of data and understanding of MRF in Europe, particularly in Southern countries, which prevents a number of fish stocks from being effectively assessed and managed. In November 2016, a participatory workshop on MRF was held in Vigo (Spain)...
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...
Trace elements in loggerhead turtles (Caretta caretta) stranded in mainland Por...
Nicolau, Lídia; Monteiro, Sílvia S.; Pereira, Andreia T.; Marçalo, Ana; Ferreira, Marisa; Torres, Jordi; Vingada, José V.; Eira, CatarinaPollution is among the most significant threats that endanger sea turtles worldwide. Waters off the Portuguese mainland are acknowledged as important feeding grounds for juvenile loggerheads. However, there is no data on trace element concentrations in marine turtles occurring in these waters. We present the first assessment of trace element concentrations in loggerhead turtles (Caretta caretta) occurring off t...
Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insigh...
Giménez, Joan; Marçalo, Ana; Ramírez, Francisco; Verborgh, Philippe; Gauffier, Pauline; Esteban, Ruth; Nicolau, Lídia; González-Ortegón, EnriqueThe ecological role of species can vary among populations depending on local and regional differences in diet. This is particularly true for top predators such as the bottlenose dolphin (Tursiops truncatus), which exhibits a highly varied diet throughout its distribution range. Local dietary assessments are therefore critical to fully understand the role of this species within marine ecosystems, as well as its ...
Application of stable isotopes to assess the feeding ecology of long-finned pil...
Monteiro, Sílvia; Ferreira, Marisa; Vingada, José V.; López, Alfredo; Brownlow, Andrew; Mendez-Fernandez, PaulaIn order to improve our knowledge on the feeding ecology of long-finned pilot whales (Globicephala melas) in Northeast Atlantic waters, skin samples of 68 long-finned pilot whales stranded in Northwest Iberia (n = 22) and Scotland (n=46)were analysed using stable isotopes of δ13Candδ15N. Isotopic mixingmodels were applied to obtain a quantitative estimate of the proportion of themain prey species in the diet of...
An assessment of contaminant concentrations in toothed whale species of the NW ...
Méndez-Fernandez, Paula; Webster, Lynda; Chouvelon, Tiphaine; Bustamante, Paco; Ferreira, Marisa; González, Angel F.; López, Alfredo; Moffat, Colin F.Concentrations and patterns of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) in the blubber of the five most common toothed whales off the Northwest Iberian Peninsula (NWIP), specifically common dolphin, long-finned pilot whale, harbour porpoise, striped dolphin and bottlenose dolphin, were investigated. The study revealed that differences in PCB and PBDE concentrations among the s...
Patterns and trends in the diet of long-finned pilot whales (Globicephala melas...
Santos, M. Begoña; Monteiro, Silvia S.; Vingada, José V.; Ferreira, Marisa; López, Alfredo; Martínez Cedeira, José A.; Reid, Robert J.; Brownlow, AndrewThere is little previous information on feeding habits of long-finned pilot whales (Globicephala melas) in the northeast Atlantic. The present study analyzed stomach contents of pilot whales stranded in Portugal (n = 6), Galicia (northwest Spain) (n = 32), and Scotland (United Kingdom) (n = 10), from 1990 to 2011. These animals ranged from 213 to 555 cm in length (24 females, 19 males and 5 of unknown sex). The...