Browsing Brage IMR by Author "Boyer, D."
Now showing items 1-3 of 3
-
Characteristics of sardinella aggregations in Angolan waters
Dalen, John; Misund, Ole Arve; Luyeye, Nkosi; Boyer, D.; Coetzee, Janet; Cloete, Rudi; Oechslin, Gerhard (ICES CM documents, Working paper, 1998) -
Towards the acoustic estimation of jellyfish abundance
Brierley, Andrew S.; Boyer, D.; Axelsen, Bjørn Erik; Lynam, Christopher P.; Sparks, Conrad A. J.; Boyer, Helen; Gibbons, Mark J. (Journal article; Peer reviewed, 2005-06-23)Acoustic target strengths (TSs) of the 2 most common large medusae, Chrysaora hysoscella and Aequorea aequorea, in the northern Benguela (off Namibia) have previously been estimated (at 18, 38 and 120 kHz) from acoustic ... -
Trawl sampling of small pelagic species off Angola. Effects of avoidance, towing speed, tow duration and time of day
Luyeye, Nkosi; Coetzee, Janet; Boyer, D.; Misund, Ole Arve (ICES CM Documents;1997/W:12, Working paper, 1997)A series of pelagic trawl sampling trials on pelagic species distributed near surface off Angola were conducted by R/V «Dr. Fridtjof Nansen» operating a medium sized pelagic trawl with a vertical opening of about 20 m. ...