Publication Date:
2021-05-19
Description:
The main objectives of the survey were the following:
• To map the distribution and estimate the abundance of the most commercially
important pelagic species in the Namibia-Angola transboundary area (15°50-19°00’),
following the survey design utilized in Angolan waters (6 n.mi spacing between
transect lines), with special emphasis on the two horse mackerel Cunene horse
mackerel (Trachurus trecae) and Cape horse mackerel (Trachurus capensis), sardine
“Pilchard” (Sardinops sagax) and other small pelagic species, including anchovy
(Engraulis capensis) and round herring (Etrumeus whiteheadi).
• To map the distributions and estimate the abundance of the same species in central
Namibia south to Dune Point (20°15’ S), following the established survey design with
10 n.mi spacing between the transect lines.
• To study and analyse the biological state of the main species, including length
frequencies, length-weight relationships, reproductive stages and length-at-maturity.
• To map the meteorological and hydrographical conditions in the survey area by means
of continuous recordings of weather data such as Sea-surface temperature (SST), Seasurface
salinity (SSS), wind
Description:
BCC PROJECT: LMR/NANSEN/1/10 CRUISE REPORTS “DR. FRIDTJOF NANSEN”1) Institute of Marine Research, Bergen, Norway
2) Instituto Nacional de Investigação Pesqueira, Luanda, Angola
3) National Marine Information and Research Centre, Swakopmund, Namibia
Description:
Published
Description:
Northernern Namibia
Description:
Transboundary area
Description:
Trawl sampling procedures
Description:
Acoustical sampling
Description:
Survey grid
Description:
Meteorological sampling
Description:
hydrographical sampling
Description:
Oceanographic conditions
Description:
Transboundary area
Keywords:
Pelagic fisheries
;
Fishery surveys
;
Acoustics
;
Sampling
;
Trawls
;
Oceanography
;
Biomass
;
Distribution
;
Composition
Repository Name:
AquaDocs
Type:
Report
,
Non-Refereed
Format:
46
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