Changes in abundance and at-sea distribution of seabirds in the Bay of Biscay prior to, and following the “Erika” oil spillIker Castège, Georges Hémery, Nicole Roux, Jean d'Elbée, Yann Lalanne, Frank D'Amico and Claude MouchèsAquat. Living Resour., 17 3 (2004) 361-367DOI: https://doi.org/10.1051/alr:2004038