Trends in numbers of petrels attracted to artificial lights suggest population declines in Tenerife, Canary Islands
Version of Record online: 25 OCT 2011
© 2011 The Authors. Ibis © 2011 British Ornithologists’ Union
Volume 154, Issue 1, pages 167–172, January 2012
How to Cite
RODRÍGUEZ, A., RODRÍGUEZ, B. and LUCAS, M. P. (2012), Trends in numbers of petrels attracted to artificial lights suggest population declines in Tenerife, Canary Islands. Ibis, 154: 167–172. doi: 10.1111/j.1474-919X.2011.01175.x
- Issue online: 15 DEC 2011
- Version of Record online: 25 OCT 2011
- Received 3 December 2010; revision accepted 27 September 2011. Associate Editor: Morten Frederiksen.
- Canary Islands;
- light pollution;
- population size;
- rescue campaigns;
The secretive breeding behaviour of petrels makes monitoring their breeding populations challenging. To assess population trends of Cory’s Shearwater Calonectris diomedea, Bulwer’s Petrel Bulweria bulwerii and Macaronesian Shearwater Puffinus baroli in Tenerife from 1990 to 2010, we used data from rescue campaigns that aim to reduce the mortality of fledgling petrels attracted to artificial lights as proxies for trends in breeding population size. Despite increases in human population size and light pollution, the number of rescued fledglings of Cory’s Shearwater and Bulwer’s Petrel increased and remained stable, respectively, whereas numbers of rescued Macaronesian Shearwaters sharply declined. In the absence of more accurate population estimates, these results suggest a worrying decline in the Macaronesian Shearwater’s breeding population.