4 documents found, page 1 of 1
Diving into the vertical dimension of elasmobranch movement ecology
Andrzejaczek, Samantha; Lucas, Tim C. D.; Goodman, Maurice C.; Hussey, Nigel E.; Armstrong, Amelia J.; Carlisle, Aaron; Coffey, Daniel M.Knowledge of the three-dimensional movement patterns of elasmobranchs is vital to understand their ecological roles and exposure to anthropogenic pressures. To date, comparative studies among species at global scales have mostly focused on horizontal movements. Our study addresses the knowledge gap of vertical movements by compiling the first global synthesis of vertical habitat use by elasmobranchs from data o...
Reply to: Caution over the use of ecological big data for conservation
Queiroz, Nuno; Humphries, Nicolas E.; Couto, Ana; Afonso, André S.; Sims, David W.; Afonso, Pedro; Bezerra, Natalia P. A.; Fontes, Jorge
Global spatial risk assessment of sharks under the footprint of fisheries
Queiroz, Nuno; Humphries, Nicolas E.; Couto, Ana; Vedor, Marisa; Costa, Ivo da; Sequeira, Ana M. M.; Mucientes, Gonzalo; Santos, António M.Effective ocean management and the conservation of highly migratory species depend on resolving the overlap between animal movements and distributions, and fishing effort. However, this information is lacking at a global scale. Here we show, using a big-data approach that combines satellite-tracked movements of pelagic sharks and global fishing fleets, that 24% of the mean monthly space used by sharks falls und...
Regional movements of the tiger shark, Galeocerdo cuvier, off northeastern Braz...
Hazin, Fábio H. V.; Afonso, Rosa Marina; De Castilho, Pedro C.; Ferreira, Luciana C.; Rocha, Bruno C. L. M.An abnormally high shark attack rate verified off Recife could be related to migratory behavior of tiger sharks. This situation started after the construction of the Suape port to the south of Recife. A previous study suggested that attacking sharks could be following northward currents and that they were being attracted shoreward by approaching vessels. In this scenario, such northward movement pattern could i...