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Title: The effect of upwelling filaments and island-induced eddies on indices of feeding, respiration and growth in copepods
Authors: Yebra, L.
Hernández-León, S. 
Almeida, C. 
Bécognée, P.
Rodríguez, J. M.
UNESCO Clasification: 251001 Oceanografía biológica
Keywords: Coastal upwelling
Mesoscale eddies
Issue Date: 2004
Publisher: 0079-6611
Journal: Progress in Oceanography 
Abstract: Vertical (0–200 m) and horizontal distribution of two calanoid copepod species, Scolecithrix danae and Scottocalanus sp., were studied in relation to physical structures in the transition zone off Northwest Africa during the summer of 1999. Zooplankton biomass and indices of feeding (gut fluorescence, GF), respiration (electron transfer system activity, ETS) and structural growth (aminoacyl-tRNA synthetases activity, AARS) were assessed across (1) upwelling filaments, (2) a cyclonic eddy and (3) three anticyclonic island-induced eddies in the waters south of the Canary Islands. Hydrography was an important influence on the populations studied, enhancing their development by advecting chlorophyll enriched cold waters towards the open ocean. S. danae had highest rates in anticyclonic eddies at the limit of the upwelled waters. However, GF was more than two-fold higher inside the filaments than in the surrounding waters. Scottocalanus sp. occurred only inside the upwelling area and within upwelling filaments that advected them toward oceanic waters. The frontal zone south of Gran Canaria showed the highest AARS activities for both species.
ISSN: 0079-6611
DOI: 10.1016/j.pocean.2004.07.008
Source: Progress in Oceanography [ISSN 0079-6611], v. 62, p. 151-169
Appears in Collections:Reseña
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