Towards a catchability constant for trawl surveys of Namibian hake

South African Journal of Marine Science

Volumn , Issue 23, 2001, Pages 375-383

  Huse, I ^a   Iilende, T ^a   Stromme T ^a  

^a INSTITUTE OF MARINE RESEARCH   (Norway)

Author keywords

Acoustics; Catchability; Hake; Trawl surveys

Indexed keywords

ACOUSTIC SURVEY; CATCHABILITY; FISHERY SURVEY; TRAWLING;

NAMIBIA;

MERLUCCIUS; REXEA SOLANDRI;

EID: 0035736276     PISSN: 02577615     EISSN: None     Source Type: Journal    
DOI: 10.2989/025776101784528782     Document Type: Article

References (23)

1. Impact of fish distribution and species composition on the relationship between acoustic and swept-area estimates of fish density
2. How vertical fish distribution may affect survey results
3. The effects of trawl performance and fish behaviour on the catching efficiency of demersal sampling trawls
4. The effect of different sweep lengths on the length composition of bottom-sampling trawl catches
5. Fish target strength for use in echo integration surveys
6. Postprocessing system for echo sounder data
7. Comparison of the reactions of fish to a trawl gear, at high and low light intensities
8. Factors affecting the reliability of groundfish abundance estimates from bottom trawl surveys
9. Diurnal variation in the feeding activity and catch rate of Cape hake (Merluccius capensis and M. paradoxus) off Namibia
10. Fish behaviour by day, night and twilight
11. Tilt angle distribution and swimming speed of overwintering Norwegian spring spawning herring
12. The diurnal vertical dynamics of Cape hake and their potential prey
13. Dynamics of the pelagic component of Namibian hake stocks
14. An overview of the multispecies VPA - Theory and applications
15. Target strength measurements of fish
16. Diel vertical migrations of marine fishes: An obligate or facultative process
17. Fish reaction to trawling noise: The significance for trawl sampling
18. Diel feeding periodicity, daily ration and vertical migration of juvenile Cape hake off the west coast of South Africa
19. Diel variability in bottom trawl catches and feeding activity of the Cape hakes off the west coast of South Africa
20. Precision in systematic trawl surveys as assessed from replicate sampling by parallel trawling off Namibia
21. A summary of target strength observations on fishes from the shelf off West Africa
22. The Dr Fridtjof Nansen Programme 1975-1993. Investigations of fishery resources in developing countries. History of the programme and review of results