Publikationsdatum:
2021-05-19
Beschreibung:
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
Beschreibung:
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
Beschreibung:
Published
Beschreibung:
Northernern Namibia
Beschreibung:
Transboundary area
Beschreibung:
Trawl sampling procedures
Beschreibung:
Acoustical sampling
Beschreibung:
Survey grid
Beschreibung:
Meteorological sampling
Beschreibung:
hydrographical sampling
Beschreibung:
Oceanographic conditions
Beschreibung:
Transboundary area
Schlagwort(e):
Pelagic fisheries
;
Fishery surveys
;
Acoustics
;
Sampling
;
Trawls
;
Oceanography
;
Biomass
;
Distribution
;
Composition
Repository-Name:
AquaDocs
Materialart:
Report
,
Non-Refereed
Format:
46
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