Rory lines : silver lining for seabirds in South Africa's demersal trawl fisheries

 

Show simple item record

dc.contributor.advisor Ryan, Peter G en_ZA
dc.contributor.advisor Wanless, Ross M en_ZA
dc.contributor.advisor Maree, Bronwyn en_ZA
dc.contributor.author Rice, Edward en_ZA
dc.date.accessioned 2015-01-01T13:07:06Z
dc.date.available 2015-01-01T13:07:06Z
dc.date.issued 2012 en_ZA
dc.identifier.citation Rice, E. 2012. Rory lines : silver lining for seabirds in South Africa's demersal trawl fisheries. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/10902
dc.description Includes bibliographical references. en_ZA
dc.description.abstract Seabird bycatch in commercial fisheries is one of the major factors causing decreases in many seabird populations. In trawl fisheries, high mortalities have been recorded as a result of seabirds being struck by trawl warps (the cables used to tow the trawl net). Tori (bird-scaring) lines have been used to decrease seabird mortality in some trawl fisheries by up to 90%. However, tori lines are not effective at reducing the number of birds that drift towards the trawl warps while feeding on factory discards alongside the vessel. The Albatross Task Force (ATF) helped to develop and test a new device, the Rory Line (RL), to be used in conjunction with tori lines, and designed to reduce warp strikes by placing a physical barrier between the scupper (where factory discards are released) and the danger zone (where the trawl warps enter the water) at the stern of the vessel. This study tests the efficacy of the RL at reducing the number of birds drifting into the danger zone and the number of birds being struck by the trawl warps. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Conservation Biology en_ZA
dc.title Rory lines : silver lining for seabirds in South Africa's demersal trawl fisheries en_ZA
dc.type Thesis / Dissertation en_ZA
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Department of Biological Sciences en_ZA
dc.type.qualificationlevel Masters en_ZA
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image


Files in this item

This item appears in the following Collection(s)

Show simple item record