Cite this paper
M. Boer, J. Clark, M. Leopold, M. Simmonds and P. Reijnders, "Photo-Identification Methods Reveal Seasonal and Long-Term Site-Fidelity of Risso’s Dolphins (Grampus griseus
) in Shallow Waters (Cardigan Bay, Wales)," Open Journal of Marine Science
, Vol. 3 No. 2, 2013, pp. 66-75. doi: 10.4236/ojms.2013.32A007
 J. Wharam and M. P. Simmonds, “Risso’s Dolphin Conservation Plan for Waters West of the UK,” 2008.
 P. Evans, P. Anderwald and M. Baines, “UK Cetacean Status Review,” 2003.
 J. Reid, P. Evans and S. Northridge, “Atlas of Cetacean Distribution in NW European Waters,” 2003.
 G. Bearzi, R. R. Reeves, E. Remonato, N. Pierantonio and S. Airoldi, “Risso’s Dolphin Grampus griseus in the Mediterranean Sea,” Mammal Biology, Vol. 76, No. 4, 2010, pp. 385-400. doi:10.1016/j.mambio.2010.06.003
 A. Gannier and O. Gannier, “Abundance of Grampus griseus in Northwestern Mediterranean,” European Research Cetaceans, Vol. 8, 1994, pp. 99-102.
 A. Gómez de Segura, E. Crespo, S. Pedraza, P. Hammond and J. Raga, “Abundance of Small Cetaceans in Waters of the Central Spanish Mediterranean,” Marine Biology, Vol. 150, 2006, pp. 149-160. doi:10.1007/s00227-006-0334-0
 SCANS-II, “Final Report Submitted to the European Commission,” 2008.
 C. R. Weir, C. Pollock, C. Cronin and S. Taylor, “Cetaceans of the Atlantic Frontier, North and West of Scotland,” Continental Shelf Research, Vol. 21, 2001, pp. 1047-1071. doi:10.1016/S0278-4343(00)00124-2
 P. S. Hammond, “Estimating the abundance of marine mammals,” In: L. Boyd, W. D. Bowen and S. J. Iverson, Eds., Marine Mammal Ecology and Conservation. Oxford University Press, New York, 2010, pp. 42-67.
 K. L. Hartman, F. Visser and A. Hendriks, “Social Structure of Risso’s Dolphins at the Azores: A Stratified Community Based on Highly Associated Social Units,” Canadian Journal of Zoology, Vol. 86, No. 4, 2008, pp. 294-306. doi:10.1139/Z07-138
 S. Airoldi, F. Bedninoni, A. Azzellino., V. Fadda and A. Profice, “Abundance Estimate of Risso’s Dolphins in the WESTERN Ligurian Sea through Mark-Recapture,” Proceedings of the 19th Annual Conference of the European Cetacean Society, La Rochelle, 2005, p. 109.
 M. N. de Boer, M. Morgan-Jenks, M. Taylor and M. P. Simmonds, “The small cetaceans of Cardigan Bay, UK,” British Wildlife, Vol. 4, 2002, pp. 246-254.
 M. N. de Boer, “Bardsey Island Cetacean Survey,” Conference Proceedings of Marine and Freshwater Monitoring, Cardiff, 19-20 November 2005, p. 1.
 T. Atkinson, A. Gill and P. G. H. Evans, “A Photo-Identification Study of Risso’s Dolphins in the Coastal Waters of the Eye Peninsula, Isle of Lewis, Scotland,” European Research Cetaceans, Vol. 11, 1997, p. 170 .
 M. N. de Boer, S. Eisfeld and M. P. Simmonds, “The Fine-Scale Habitat Use of Risso’s Dolphins off Bardsey Island, Cardigan Bay (UK),” Proceedings of the first European Cetacean Society workshop on Risso’s dolphin, Galway, 25 March 2012, p. 6.
 E. Rexstad and K. Burnham, “User’s Guide for Interactive Program CAPTURE,” Colorado State University, Fort Collins, 1991.
 B. Wilson, P. S. Hammond and P. S. Thompson, “Estimating Size and Assessing Trends in a Coastal Bottlenose Dolphin Population,” Ecology Applications, Vol. 9, No. 1, 1999, pp. 288-300.
 D. L. Otis, K. P. Burnham, G. C. White and D. R. Anderson, “Statistical Inference from Capture Data on Closed Animal Populations,” Wildlife Monographs, Vol. 62, 1978, pp. 1-35.
 K. H. Pollock, J. D. Nichols, C. Brownie and J. E. Hines, “Statistical Inference for Capture-Recapture Experiments,” Wildlife Monographs, Vol. 107, 1990, pp. 1-97.
 J. A. Williams, S. M. Dawson and E. Slooten, “The Abundance and Distribution of Bottlenosed Dolphins in Doubtful Sound, New Zealand,” Canadian Journal of Zoology, Vol. 71, No. 10, 1993, pp. 2080-2088.
 K. P. Burnham and W. S. Overton, “Estimation of the Size of a Closed Population When Capture Probabilities Vary among Animals,” Biometrika, Vol. 65, No. 3, 1978, pp. 625-633. doi:10.1093/biomet/65.3.625
 B. K. Williams, J. D. Nichols and M. J. Conroy, “Estimating Abundance for Closed Populations with MarkRecapture Methods-Analysis and Management of Animal Populations,” Academic Press, London, 2002.
 P. G. H. Evans and P. S. Hammond, “Monitoring Cetaceans in European Waters,” Mammal Review, Vol. 34, No. 1, 2004, pp. 131-156.
 N. David and L. Di Méglio, “First Results of Summer Movements of Grampus griseus (Cuvier, 1812) in the N Mediterranean Sea,” European Research Cetaceans, Vol. 13, 1999, pp. 189-194.
 S. Airoldi, A. Azzellino, V. Fadda, S. Gaspari, B. Nani, M. Zanardelli, G. Notarbartolo di Sciara and M. Mariani, “Social Ecology of Risso’s Dolphins in the Ligurian Sea: Preliminary Results,” European Research Cetaceans, Vol. 14, 2000, pp. 213-217.
 A. M. Canadas and R. Sagarminaga, “Preliminary Results of Photo-Identification Studies on Risso’s Dolphins Undertaken during Surveys of Cetacean Distribution and Dynamics along the SE Coast of Spain: 1992-1995,” European Research Cetaceans, Vol. 10, 1997, pp. 222-224.
 R. S. Wells, C. A. Manire, L. Byrd, D. R. Smith, J. G. Gannon, D. Fauquier and K. Mullin, “Movements and dive patterns of a rehabilitated Risso’s dolphin, Grampus griseus, in the Gulf of Mexico and Atlantic Ocean,” Marine Mammal Science, Vol. 25, No. 2, 2009, pp. 420-429.
 E. Hoyt, “Marine Protected Areas for Whales, Dolphins and Porpoises: A World Handbook for Cetacean Habitat Conservation,” Earthscan, London, 2010.