A majorCalanus finmarchicusoverwintering population inside a deep fjord in northern Norway: implications for cod larvae recruitment success | Zendy

Boris Espinasse | Zendy; Sünnje L. Basedow | Zendy; Vigdis Tverberg | Zendy; Tore Hattermann | Zendy; Ketil Eiane | Zendy

Open Access

A majorCalanus finmarchicusoverwintering population inside a deep fjord in northern Norway: implications for cod larvae recruitment success

Author(s) -

Boris Espinasse,

Sünnje L. Basedow,

Vigdis Tverberg,

Tore Hattermann,

Ketil Eiane

Publication year - 2016

Publication title -

journal of plankton research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.87

H-Index - 93

eISSN - 1464-3774

pISSN - 0142-7873

DOI - 10.1093/plankt/fbw024

Subject(s) - calanus finmarchicus , overwintering , fjord , oceanography , population , norwegian , fishery , calanus , abundance (ecology) , biology , diel vertical migration , larva , range (aeronautics) , ecology , environmental science , crustacean , copepod , geology , demography , linguistics , philosophy , sociology , materials science , composite material

High Calanus finmarchicus abundances were recorded in wintertime in Vestfjorden, close to the main cod breeding grounds off Lofoten and Vesterålen, northern Norway. The mean abundance for locations with water depth >500 m was ∼37000 ind. m -2 (range: 26700-49000 ind. m -2 ). To our knowledge, this is the first report of massive overwintering of C. finmarchicus on the Norwegian shelf. Because of the observed size and location of this population, we argue that local overwintering on the northern Norwegian shelf can contribute significantly to sustain a C. finmarchicus population on the shelf during the period of first feeding for cod larvae. This is supported by a particle tracking model.

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