Interactions between seabirds and deep-water hake trawl gear: An assessment of impacts in South African waters

Animal Conservation

Volumn 11, Issue 4, 2008, Pages 247-254

  Watkins, Barry P ^a   Petersen, S L ^a,b   Ryan, P G ^a  

^a UNIVERSITY OF CAPE TOWN   (South Africa)

^b WWF Responsible Fisheries Programme   (South Africa)

Author keywords

Albatross; Demersal trawling; Fishery discards; Gannet; Mortality; Offal; Petrel

Indexed keywords

BYCATCH; DEEP WATER; MORTALITY; POPULATION DECLINE; SEABIRD; SPECIES CONSERVATION; TRAWLING;

AFRICA; SOUTH AFRICA; SOUTHERN AFRICA; SUB-SAHARAN AFRICA;

AVES; DIOMEDEA MELANOPHRIS; DIOMEDEIDAE; MERLUCCIUS; MERLUCCIUS CAPENSIS; MORUS (PLANT); MORUS CAPENSIS; PROCELLARIA AEQUINOCTIALIS; PROCELLARIIDAE; PUFFINUS GRISEUS; REXEA SOLANDRI; SULIDAE; THALASSARCHE CAUTA;

EID: 48649093988     PISSN: 13679430     EISSN: 14691795     Source Type: Journal    
DOI: 10.1111/j.1469-1795.2008.00192.x     Document Type: Article

References (21)

1. Abrams, R.W. (1983). Pelagic seabirds and trawl-fisheries in the southern Benguela current region. Mar. Ecol. Progr. Ser. 11, 151-156.
2. Abrams, R.W. (1985). Pelagic seabird community structure in the southern Benguela region: Changes in response to man's activities? Biol. Conserv. 32, 33-49.
3. Baird, S.J. (2004). Estimation of the incidental capture of seabird species in commercial fisheries in New Zealand waters, 2002-2003. Unpublished draft New Zealand Assessment Report.
4. Bartle, J.A. (1991). Incidental capture of seabirds in the New Zealand subantarctic squid trawl fishery, 1990. Bird Conserv. Int. 1, 351-359.
5. Berruti, A., Underhill, L.G., Shelton, P.A., Moloney, C. & Crawford, R.J.M. (1993). Seasonal and interannual variation in the diet of two colonies of the Cape gannet (Morus capensis) between 1977-78 and 1989. Colonial Waterbirds 16, 158-175.
6. BirdLife International (2004). Threatened birds of the world. Cambridge, UK: BirdLife International.
7. Brothers, N. (1991). Albatross mortality and associated bait loss in the Japanese longline fishery in the Southern Ocean. Biol. Conserv. 55, 255-268.
8. Crawford, R.J.M., Ryan, P.G. & Williams, A.J. (1991). Seabird consumption and production in the Benguela and western Agulhas ecosystems. S. Afr. J. Mar. Sci. 11, 357-375.
9. Gonzalez-Zevallos, D., Yorio, P. & Caille, G. (2007). Seabird mortality at trawler warp cables and a proponed mitigation measure: A case study in Golfo San Jorge, Patagonia, Argentina. Biol. Conserv. 136, 108-116.
10. Hockey, P.A.R., Dean, W.R.J. & Ryan, P.G. (Eds), (2005). Roberts' birds of Southern Africa. 7th edn. Cape Town: John Voelcker Bird Book Fund.
11. Jackson, S. (1988). Diets of the white-chinned petrel and sooty shearwater in the southern Benguela Region, South Africa. Condor 90, 20-28.
12. Munro, G. (2005). Waste discard management in the Falkland Islands trawl fishery: A discussion document. Falklands Conservation, unpublished report.
13. Nel, D.C., Ryan, P.G. & Watkins, B.P. (2002). Seabird mortality in the Patagonian toothfish longline fishery around the Prince Edward Islands, 1996-2000. Antarct. Sci. 14, 151-161.
14. Ryan, P.G., Keith, D.G. & Kroese, M. (2002). Seabird bycatch by tuna longline fisheries off southern Africa. S. Afr. J. Mar. Sci. 24, 103-110.
15. Ryan, P.G & Moloney, C.L. (1988). Effect of trawling on bird and seal distributions in the southern Benguela region. Mar. Ecol. Progr. Ser. 45, 1-11.
16. Sinclair, J.C. (1978). Seabirds on a trawling voyage. Bokmakierie 30, 12-16.
17. Sullivan, B.J. & Reid, T.A. (2002). Seabird interactions/mortality with longliners and trawlers in Falkland Island waters 2001/02. Falklands Conservation, unpublished report.
18. Sullivan, B.J. & Reid, T.A. (2003). Seabird mortality and trawlers in Falkland Island waters 2002/03. Falklands Conservation, unpublished report.
19. Sullivan, B.J., Reid, T.A. & Bugoni, L. (2006). Seabird mortality on factory trawlers in the Falkland Islands and beyond. Biol. Conserv. 131, 495-504.
20. Weimerskirch, H., Capdeville, D. & Duhamel, G. (2000). Factors affecting the number and mortality of seabirds attending trawlers and long-liners in the Kerguelan area. Polar Biol. 23, 236-249.
21. Weimerskirch, H., Catard, A., Prince, P.A., Cherel, Y. & Croxall, J.P. (1999). Foraging white-chinned petrels Procellaria aequinoctialis at risk: From the tropics to Antarctica. Biol. Conserv. 87, 273-275.