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| Rong Utne, Kjell; Huse, Geir; Ottersen, Geir; Holst, Jens C.; Zabavnikov, Vladimir; Jacobsen, Jan A.; Óskarsson, Guđmundur J.; Nøttestad, Leif. |
| The Norwegian Sea harbours several large pelagic fish stocks, which use the area for feeding during the summer. The period 1995–2006 had some of the highest biomass of pelagic fish feeding in the Norwegian Sea on record. Here we address the horizontal distribution and overlap between herring, blue whiting and mackerel in this period during the summers using a combination of acoustic, trawl and LIDAR data. A newly developed temperature atlas for the Norwegian Sea is used to present the horizontal fish distributions in relation to temperature. The centre of gravity of the herring distribution changed markedly several times during the investigated period. Blue whiting feeding habitat expanded in a northwestern direction until 2003, corresponding with an... |
| Tipo: Text |
Palavras-chave: Herring; Mackerel; Blue whiting; Temperature; Competition; Interaction. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00079/19018/16602.pdf |
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| Van Beveren, Elisabeth; Fromentin, Jean-marc; Rouyer, Tristan; Bonhommeau, Sylvain; Brosset, Pablo; Saraux, Claire. |
| Since 2007, the biomass of sardine and anchovy in the NW Mediterranean has remained persistently low, whereas the biomass of the commercially low-valued sprat has exploded. Also, simultaneous decreases in condition, size, and/or age of these populations were observed. Altogether, this resulted in a drop in landings of small pelagics. To understand the amplitude of these events and to provide a baseline scenario against which current changes can be compared, we compiled exceptionally long landing series (1865–2013) of sardine, anchovy, and mackerel for different subregions of the southern French coast. We characterized the fluctuations of these landings and compared these with environmental drivers (sea surface temperature, Rhône river discharge, North... |
| Tipo: Text |
Palavras-chave: Anchovy; Fish landings; Gulf of Lions; Historical time series; Mackerel; Sardine. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00319/43001/42561.pdf |
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