Weather effect on widely distributed seabirds through migration flyways: a case study with the Northern Gannet Morus bassanus in the Bay of Biscay

Temporal Changes in Migratory Seabird Abundance on the Portuguese Coast Revealed by a Citizen Science Project

“…The Bay of Biscay, to the north of Spain, as well as the northwest coast of France and the southwest coast of the United Kingdom (covering the western English Channel), also include sites where coastal censuses have been providing valuable information to evaluate spatiotemporal distribution patterns of several seabird populations (e.g. Yésou, 2003; Mouriňo et al ., 2003; Jones et al ., 2014; Egunez et al ., 2018; Martín et al ., 2020). For instance, the abundance of the Balearic Shearwater has increased in recent years in the Mediterranean as well as in northern latitudes, namely along northwest European coasts (Wynn et al ., 2007; Luczak et al ., 2011; Arroyo et al ., 2014; Jones et al ., 2014; Martín et al ., 2020).…”

Monitoring Abundance and Distribution of Northern Gannets Morus bassanus in Western Iberian Waters in Autumn by Aerial Surveys

“…Monitoring seabird abundance changes within both the breeding and non-breeding periods (i.e. use of migratory corridors and wintering areas) is necessary to understanding the current demographic status of a population (lewison et al, 2012;Egunez et al, 2018) and the factors affecting the annual life cycles of seabirds (Magnusdottir et al, 2012). Furthermore, evaluating the conservation status of seabird populations across their geographical range is required to meet international regulations and agreements, including the European Union Birds Directive (2009/147/EC) and Marine Strategy Framework Directive (2008/56/EC).…”