Individual study: Impact on common terns Sterna hirundo and roseate terns S. dougallii of eradication of European rabbits Oryctolagus cuniculus from Ilhéu da Praia, Graciosa, Azores, Portugal
Pitta Groz M. & Pereira J.C. (2005) Invasive alien species as a threat to seabird populations: an account of habitat restoration on 'Ilhéu da Praia' (Graciosa, Azores) Special Protection Area. Airo, 15, 3-9
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Control or remove habitat-altering mammals
A before-and-after study on Ilhéu da Praia, Azores, Portugal (Pitta Groz & Pereira 2005), found that the breeding populations of common terns Sterna hirundo and roseate terns S. dougallii increased significantly from 1997 (approximately 100 pairs of common and fewer than ten pairs of roseate terns) to 2002 (641 pairs of common and 133 pairs of roseate terns), following the eradication of European rabbits Oryctolagus cuniculus in 1997 by brodifacoum poisoning. Common tern populations initially increased to approximately 950 pairs in 2000, before falling again.