Evidence for temporal changes in ray and skate populations in the Portuguese coast (1998–2003) – its implications in the ecosystemIvone Figueiredo, Teresa Moura, Pedro Bordalo-Machado, Ana Neves, Cristina Rosa and Leonel Serrano GordoAquat. Living Resour., 20 1 (2007) 85-93DOI: https://doi.org/10.1051/alr:2007019
