Offshore distribution of seabirds in the northwestern Mediterranean in June 1995
1998
Abelló, Pere | Oro, Daniel
The offshore distribution of seabirds was examined during an oceanographic cruise in the northwestern Mediterranean in June 1995. Counts were made at 81 hydrographic sampling stations. The three most abundant species were those with the greatest breeding numbers in the area: Audouin's Gull (Larus audouinii), Cory's Shearwater (Calonectris diomedea), and Balearic Shearwater (Puffinus yelkouan mauretanicus). All three species were found in both inshore and offshore waters, and up to around 200 km from their nearest colonies. The area with the highest concentration of individuals coincided for the three species, circa 40 km southeast of the mouth of the Ebro River, where high densities of clupeiform fishes occur. In contrast, the Yellow-legged Gull (Larus cachinnans), a species also having large breeding numbers in the area, was not common at sea, especially in offshore waters.
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