Exploitation of trawler discards by breeding seabirds in the north-western Mediterranean: Differences between the Ebro Delta and the Balearic Islands areas

ICES Journal of Marine Science

Volumn 54, Issue 4, 1997, Pages 695-707

  Oro, Daniel ^a   Ruiz, Xavier ^a  

^a Vertebrats ^*  (Spain)

Author keywords

Discards; Energy requirements and availability; Feeding ecology; Fisheries; Laridae; Procellariiformes

Indexed keywords

FISHERY DISCARD; SCAVENGING; SEABIRD; SPECIES DIVERSITY;

(NORTH WEST); MEDITERRANEAN SEA;

CHLYDONIAS;

EID: 0031200802     PISSN: 10543139     EISSN: None     Source Type: Journal    
DOI: 10.1006/jmsc.1997.0246     Document Type: Conference Paper

References (40)

1. Aguilar, J. S. 1991. Resum de l'atlas d'ocells marins de las Balears, 1991. Anuari Ornitològic de les Balears, 6: 17-28.
2. Birt-Friesen, V. L., Montevecchi, W. A., Cairns, D. K., and Macko, S. A. 1989. Activity-specific metabolic rates of free-living northern gannets and other seabirds. Ecology, 70: 357-367.
3. Blaber, S. J. M. and Wassenberg, T. J. 1989. Feeding ecology of the piscivorous birds Phalacrocorax varius, P. melanoleucos and Sterna bergii in Moreton Bay, Australia: diets and dependence on trawler discards. Marine Biology, 101: 1-10.
4. Bosch, M., Oro, D., and Ruiz, X. 1994. Dependence of yellow-legged gulls (Larus cachinnans) on food from human activity in two western Mediterranean colonies. Avocetta, 18: 135-139.
5. Bryant, D. M. and Furness, R. W. 1995. Basal metabolic rates of North Atlantic seabirds. Ibis, 137: 219-226.
6. Camphuysen, C. J. 1994. Flatfish selection by herring gulls Larus argentatus and lesser black-backed gulls Larus fuscus scavenging at commercial beamtrawlers in the southern North Sea. Netherlands Journal of Sea Research, 32: 91-98.
7. Camphuysen, C. J., Calvo, B., Durinck, J., Ensor, K., Follestad, A., Furness, R. W., Garthe, S., Leaper, G., Skov, H., Tasker, M. L., and Winter, C. J. N. 1995. Consumption of discards by seabirds in the North Sea. Final report EC DG XIV. Netherlands Institute for Sea Research, Texel. 202 pp.+LVI.
8. Crawford, R. J. M., Underbill, L. G., Raubenheimer, C. M., Dyer, B. M., and Martin, J. 1992. Top predators in the Benguela ecosystem: implications of their trophic position. South African Journal of Marine Sciences, 12: 675-687.
9. del Hoyo, J., Elliot, A., and Sargatal, J. (Eds) 1992. Handbook of the birds of the world, vol. 1. Lynx Edicions, Barcelona. 696 pp.
10. del Hoyo, J., Elliot, A., and Sargatal, J. (Eds) 1996. Handbook of the birds of the world, vol. 3. Lynx Edicions, Barcelona. 821 pp.
11. Demestre, M., Lleonart, J., Martin, P., Recasens, L., and Sánchez, P. 1988. La pesca en Cataluña. FAO Rapport sur les Pêches, 395: 101-103.
12. Dunnet, G. M., Furness, R. W., Tasker, M. L., and Becker, P. H. 1990. Seabird ecology in the North Sea. Netherlands Journal of Sea Research, 26: 387-425.
13. Fasola, M. and Bogliani, G. 1990. Foraging ranges of an assemblage of Mediterranean seabirds. Colonial Waterbirds, 13: 72-74.
14. Fasola, M., Bogliani, G., Saino, N., and Canova, L. 1989. Foraging, feeding and time-activity niches of eight species of breeding seabirds in the coastal wetlands of the Adriatic Sea. Bollettino di Zoologia, 56: 61-72.
15. Fowler, J. and Cohen, L. 1990. Practical statistics for field biology. Open University Press, Buckingham, UK. 227 pp.
16. Furness, R. W. 1992. Implications of changes in net mesh size, fishing effort and minimum landing size regulations in the North Sea for seabird populations. JNCC Report No. 133.
17. Furness, R. W., Ensor, K., and Hudson, A. V. 1992. The use of fishery waste by gull populations around the British Isles. Ardea, 80: 105-113.
18. Furness, R. W., Hudson, A. V., and Ensor, K. 1988. Interactions between scavenging seabirds and commercial fisheries around the British Isles. In Seabirds and other marine vertebrates: competition, predation and other interactions, pp. 240-268. Ed. by J. Burger. Columbia University Press, New York, USA. 339 pp.
19. Garthe, S., Camphuysen, C. J., and Furness, R. W. 1996. Amounts of discards by commercial fisheries and their significance as food for seabirds in the North Sea. Marine Ecology Progress Series, 136: 1-11.
20. Garthe, S. and Hüppop, O. 1994. Distribution of shipfollowing seabirds and their utilization of discards in the North Sea in summer. Marine Ecology Progress Series, 106: 1-9.
21. Hairston, N. G. 1989. Ecological experiments: purpose, design and execution. Cambridge University Press, Cambridge, UK. 370 pp.
22. Jones, L. L. and DeGange, A. R. 1988. Interactions between seabirds and fisheries in the North Pacific Ocean. In Seabirds and other marine vertebrates: competition, predation and other interactions, pp. 269-291. Ed. by J. Burger. Columbia University Press, USA. 339 pp.
23. Krebs, C. J. 1989. Ecological methodology. Harper and Collins, New York, USA. 654 pp.
24. Montevecchi, W. A., Birt-Friesen, V. L., and Cairns, D.K. 1992. Reproductive energetics and prey harvest of Leach's storm-petrels in the northwest Atlantic. Ecology, 73: 823-832.
25. MacCall, A. D. 1984. Seabird-fishery trophic interactions in eastern Pacific boundary, currents: California and Peru. In Marine birds: their feeding ecology and commercial fisheries relationships, pp. 136-149. Ed. by D. N. Nettleship, G. A. Sanger, and P. F. Springer. Canadian Wildlife Service. 220 pp.
26. Oro, D. 1996. The effects of trawler discard availability on the egg-laying and the breeding success of the lesser black-backed gull Larus fuscus in the western Mediterranean. Marine Ecology Progress Series, 132: 43-46.
27. Oro, D., Bosch, M., and Ruiz, X. 1995. Effects of a trawling moratorium on the breeding success of the yellow-legged gull Larus cachinnans. Ibis, 137: 347-349.
28. Oro, D., Jover. L., and Ruiz, X. 1996. Influence of trawling activity on the breeding ecology of a threatened seabird, Audouin's gull Larus audouinii. Marine Ecology Progress Series, 139: 19-29.
29. Palomera, I. 1992. Spawning of anchovy Engraulis encrasicolus in the northwestern Mediterranean relative to hydrographic features in the region. Marine Ecology Progress Series, 79: 215-223.
30. Palomera, I. and Pertierra, J. P. 1993. Anchovy biomass estimate by the daily egg production method in 1990 in the western Mediterranean Sea. Scientia Marina, 57: 243-251.
31. Pielou, E. C. 1975. Ecological diversity. New York, John Wiley and Sons. 165 pp.
32. Ruiz, X., Jover, L., Oro, D., González-Solís, J., Pedrocchi, V., Genovart, M., Abella, J. C., and Sanpera, C. 1996b. Ecologia y dinámica de la población de la gaviota de Audouin Larus audouinii. ICONA-Universidad de Barcelona, Barcelona. 630 pp.
33. Ruiz, X., Oro, D., Martínez-Vilalta, A., and Jover, L. 1996a. The feeding ecology of Audouin's gull Larus audouinii in the Ebro Delta. In Ecology, conservation and management of colonial waterbirds in the Mediterranean region, pp. 68-74. Ed. by A. J. Crivelli, H. Hafner, M. Fasola, R. M. Erwin, and D. A. McCrimmon, Jr. Colonial Waterbirds, 19, Special Publication 1.
34. Ruiz, X., Oro, D., Martínez-Vilalta, A., and Jover, L. 1996a. The feeding ecology of Audouin's gull Larus audouinii in the Ebro Delta. In Ecology, conservation and management of colonial waterbirds in the Mediterranean region, pp. 68-74. Ed. by A. J. Crivelli, H. Hafner, M. Fasola, R. M. Erwin, and D. A. McCrimmon, Jr. Colonial Waterbirds, 19, Special Publication 1.
35. Sarà, M. 1993. Feeding habits of Cory's shearwater (Calonectris diomeded) in the central Mediterranean Sea. In Estatus y conservatión de aves marinas, pp. 213-220. Ed. by J. S. Aguilar, X. Monbailliu, and A. M. Paterson. SEO, Madrid. 386 pp.
36. Thompson, K. R. and Riddy, M. D. 1995. Utilization of offal and discards from "finfish" trawlers around the Falkland Islands by the black-browed albatross Diomedea melanophris. Ibis, 137: 198-206.
37. von Ende, C. N. 1993. Repeated-measures analysis: growth and other time-dependent measures. In Design and analysis of ecological experiments, pp. 113-137. Ed. by S. M. Scheiner and J. Gurevitch. Chapman and Hall, New York. 445 pp.
38. Walter, U. and Becker, P. H. 1994. The significance of discards from the brown shrimp fisheries for seabirds in the Wadden Sea - preliminary results. Ophelia Supplement, 6: 253-262.
39. Zahl, S. 1977. Jack-knifing - an index of diversity. Ecology, 58: 907-913.
40. Zar, J. H. 1984. Biostatistical analysis. Prentice Hall International. New Jersey. 718 pp.