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Influence of environmental factors on small cetacean distribution in the Spanish Mediterranean

Published online by Cambridge University Press:  17 March 2008

A. Gómez de Segura*
Affiliation:
Unidad de Zoología Marina, Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universidad de Valencia, PO Box 22085, E-46071, Valencia, Spain
P.S. Hammond
Affiliation:
Sea Mammal Research Unit, Gatty Marine Laboratory, St Andrews, University of St Andrews, Fife KY16 8LB, Scotland, UK
J.A. Raga
Affiliation:
Unidad de Zoología Marina, Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universidad de Valencia, PO Box 22085, E-46071, Valencia, Spain
*
Correspondence should be addressed to: A. Gómez de Segura, Unidad de Zoología Marina, Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universidad de Valencia, PO BOX 22085, E-46071, Valencia, Spain email: amaia.gomez@uv.es

Abstract

Habitat distribution models are one of the most up to date methods to study the habitat usage of wildlife populations. They allow animal distribution to be related to environmental features and also the prediction of the distribution of animals based on this relationship. Seasonal aerial surveys were conducted in central Spanish Mediterranean waters from June 2000 to March 2003 to obtain information on the distribution of cetacean species. Data from the three most common cetacean species (striped dolphin, Stenella coeruleoalba, bottlenose dolphin, Tursiops truncatus, and Risso's dolphin, Grampus griseus) were related, using generalized linear models, to local environmental features: depth, slope, sea surface temperature and chlorophyll concentration. For bottlenose dolphins, no significant relationship was found with any covariate and no dolphins were observed in waters greater than 1000 m. The distribution of both striped and Risso's dolphin was significantly related to depth. The striped dolphin showed a preference for waters between 900 and 1500 m deep and Risso's dolphin for waters more than 1500 m deep. In addition, for the latest two species, maps of distribution were predicted by means of the spatial models. The areas of higher probabilities of occurrence coincide to a large extent with the marine protected areas previously proposed for the conservation of oceanic cetacean species.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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References

Baumgartner, M.F. (1997) The distribution of Risso's dolphin (Grampus griseus) with respect to physiography of the northern Gulf of Mexico. Marine Mammal Science 13, 614638.CrossRefGoogle Scholar
Baumgartner, M.F., Mullin, K.D. and May, L.N. (2001) Cetacean habitats in the northern Gulf of Mexico. Fishery Bulletin 99, 219239.Google Scholar
Blanco, C., Aznar, J. and Raga, J.A. (1995) Cephalopods in the diet of Stenella coeruleoalba (Meyen, 1833) from Western Mediterranean during an epizootic in 1990. Journal of Zoology 237, 151158.CrossRefGoogle Scholar
Blanco, C., Raduán, M.A. and Raga, J.A. (2006) Diet and feeding habitat of Risso's dolphin (Grampus griseus) in the Western Mediterranean Sea. Scientia Marina 70, 407411.CrossRefGoogle Scholar
Blanco, C., Salomón, O. and Raga, J.A. (2001) Diet of the bottlenose dolphin (Tursiops truncatus) in the western Mediterranean Sea. Journal of the Marine Biological Association of the UK 81, 10531058.CrossRefGoogle Scholar
Boyce, M.S. and McDonald, L.L. (1999) Relating populations to habitats using resource selection functions. Trendsin Ecology and Evolution 14, 268272.CrossRefGoogle ScholarPubMed
Buckland, S.T., Anderson, D.R., Burnham, K.P., Laake, J.L., Borchers, D.L. and Thomas, L. (2001) Introduction to distance sampling: estimating abundance of biological populations. Oxford: Oxford University Press.CrossRefGoogle Scholar
Burnham, K.P. and Anderson, D.R. (1998) Model selection and inference, a practical information–theoretic approach. New York: Springer-Verlag.CrossRefGoogle Scholar
Cañadas, A., Sagarminaga, R. and Garcia-Tiscar, S. (2002) Cetacean distribution related with depth and slope in the Mediterranean waters off southern Spain. Deep-Sea Research 49, 20532073.CrossRefGoogle Scholar
Cañadas, A., Sagarminaga, R., De Stephanis, R., Urquiola, E. and Hammond, P.S. (2005) Habitat preference modelling as a conservation tool: proposal for marine protected areas for cetaceans in southern Spanish waters. Aquatic Conservation: Marine and Freshwater Ecosystems 15, 495521.CrossRefGoogle Scholar
CTE/CN [Centre Thématique Européen Pour la Conservation de la Nature] (1996) Conclusions du premier séminaire scientifique pour la région biogéographique de la Macaronesie. Tenerife, 7–9 November 1996.Google Scholar
Davis, R.W., Fragion, G.S., May, N., Leming, T.D., Braumgartner, M.F., Evans, W.E., Hansen, L.J. and Mullin, K.D. (1998) Physical habitat of cetaceans along the continental slope in the north-central and western Gulf of Mexico. Marine Mammal Science 14, 490507.CrossRefGoogle Scholar
Forney, K.A. (2000) Environmental models of cetacean abundance: reducing uncertainty in population trends. Conservation Biology 14, 12711286.CrossRefGoogle Scholar
Gannier, A. (1998) Variation saisonnière de l'affinité bathymétrique des cétacés dans le basin liguro-provençal (Méditerranée Occidentale). Vie et Milieu 48, 2534.Google Scholar
Gannier, A. (1999) Diel variations of the striped dolphin distribution off the French Riviera (Northwestern Mediterranean Sea). Aquatic Mammals 25, 123134.Google Scholar
Gannier, A. (2005) Summer distribution and relative abundance of delphinids in the Mediterranean sea. Revue d'Ecologie (Terre Vie) 60, 223238.CrossRefGoogle Scholar
Gómez de Segura, A., Crespo, E.A., Pedraza, S.N., Hammond, P.S. and Raga, J.A. (2006) Abundance of small cetaceans in the waters of the central Spanish Mediterranean. Marine Biology 150, 149160.CrossRefGoogle Scholar
Gómez de Segura, A., Tomás, J. and Raga, J.A. (2004) Sector centro (Comunidad Valenciana y Murcia). In Raga, J.A. and Pantoja, J. (eds) Proyecto Mediterráneo: zonas de especial interés para la conservación de los cetáceos en el Mediterráneo español. Madrid: Publicaciones del Ministerio de Medio Ambiente, pp. 67133.Google Scholar
Hamazaki, T. (2002) Spatiotemporal prediction models of cetaceans habitats in the mid-western North Atlantic Ocean (from Cape Hatteras, North Carolina U.S.A. to Nova Scotia, Canada). Marine Mammal Science 18, 920939.CrossRefGoogle Scholar
Hooker, S.K., Whitehead, H. and Gowans, S. (1999) Marine protected area design and the spatial and temporal distribution of cetaceans in a submarine canyon. Conservation Biology 13, 592602.CrossRefGoogle Scholar
Leatherwood, S. and Reeves, R.R. (1990) The bottlenose dolphin. San Diego: Academic Press.Google Scholar
Marini, L., Consiglio, C., Angradi, A.M., Catalano, B., Sanna, A., Valentini, T., Finoia, M.G. and Villetti, G. (1997) Distribution, abundance and seasonality of cetaceans sighted during scheduled ferry crossings in the central Tyrrhenian Sea: 1989–1992. Italian Journal of Zoology 63, 381388.CrossRefGoogle Scholar
McCullagh, P. and Nelder, J.A. (1989) Generalized linear models, 2nd edn.New York: Chapman & Hall.CrossRefGoogle Scholar
Natoli, A. and Hoelzel, R. (2000) Genetic diversity in a Mediterranean population of the bottlenose dolphin in the context of world-wide phylogeography. European Research on Cetaceans 14, 343.Google Scholar
Notarbartolo di Sciara, G., Venturino, M.C., Zanardelli, M., Bearzi, G., Borsani, J.F. and Caballón, B. (1993) Cetaceans in the central Mediterranean Sea: distribution and sighting frequencies. Italian Journal of Zoology 60, 131138.Google Scholar
Perrin, W.F., Wilson, C.E. and Archer, F.I. (1994) Striped dolphin—Stenella coeruleoalba (Meyen, 1833). In Ridgway, S.H. and Harrison, S.R. (eds) Handbook of marine mammals. Vol. 5: the first book of dolphins. London: Academic Press, pp. 129160.Google Scholar
Raga, J.A. and Pantoja, J. (eds) (2004) Proyecto Mediterráneo: zonas de especial interés para la conservación de los cetáceos en el Mediterráneo español. Madrid: Publicaciones del Ministerio de Medio Ambiente.Google Scholar
Redfern, J.V. et al. (2006) Techniques for cetacean-habitat modelling: a review. Marine Ecology Progress Series 310, 271295.CrossRefGoogle Scholar
Waring, G.T., Palka, D.L., Mullin, K.D., Hain, J.H.W., Hansen, L.J. and Bisack, K.D. (1997) U.S. Atlantic and Gulf of Mexico marine mammal stock assessments. NOAA Technical Memoirs NMFS-NE-114, 250 pp.Google Scholar
Wells, R.S., Rhinehart, H.L., Cunningham, P., Whaley, J., Baran, M., Koberna, C. and Costa, D.P. (1999) Long distance offshore movements of bottlenose dolphins. Marine Mammal Science 15, 10981114.CrossRefGoogle Scholar