FN Archimer Export Format
PT J
TI Hydrodynamic conditions associated with the formation, maintenance and dissipation of a phytoplankton thin layer in a coastal upwelling system
BT 
AF VELO-SUAREZ, Lourdes
   FERNAND, Liam
   GENTIEN, Patrick
   REGUERA, Beatriz
AS 1:1;2:2;3:3;4:1;
FF 1:;2:;3:PDG-DPCP;4:;
C1 Ctr Oceanog Vigo, Inst Espanol Oceanog, E-36200 Vigo, Spain.
   CEFAS, Lowestoft NR33 OHT, Suffolk, England.
   IFREMER, Ctr Brest, DYNECO, F-29280 Plouzane, France.
C2 IEO, SPAIN
   CEFAS, UK
   IFREMER, FRANCE
SI BREST
SE PDG-DPCP
IN WOS Ifremer jusqu'en 2018
   copubli-europe
IF 1.928
TC 14
UR https://archimer.ifremer.fr/doc/00008/11905/9765.pdf
LA English
DT Article
DE ;Thin layer;Phytoplankton;Shear;Coastal upwelling system;Physical forcing;Coastal circulation
AB During May-June 2005, a 17-d cruise was carried out in Ria de Pontevedra (Galician Rias Baixas) to study the physical-biological interactions that may lead to subsurface aggregations of phytoplankton organisms in thin layers (TLs). Physical processes governed the initiation and development, maintenance, and decline of a diatom (toxin producing Pseudo-nitzschia spp. and Chaetoceros socialis) TL during an upwelling relaxation-upwelling-downwelling sequence. Differences in shear profiles appeared to lead to the formation of a TL during upwelling events. These results reveal that the coupling between maximum values of shear and buoyancy frequency can shape a subsurface chlorophyll maximum (SCM) into a TL. The effect of shear upon phytoplankton patches, which has been predicted on the basis of theoretical studies, has been corroborated in this study in which the vertical distribution of an observed TL was controlled by physical processes. Understanding both local fine-scale circulation patterns and regional physical processes will improve our knowledge of the spatial and temporal occurrence of these layers. Results here bring new understanding in TL dynamics at coastal upwelling sites and provide information about the physical processes involved in TL development, which can be used to predict their occurrence and understand their ecological implications. (C) 2009 Elsevier Ltd. All rights reserved.
PY 2010
PD FEB
SO Continental Shelf Research
SN 0278-4343
PU Pergamon-elsevier Science Ltd
VL 30
IS 2
UT 000274993700008
BP 193
EP 202
DI 10.1016/j.csr.2009.11.002
ID 11905
ER

EF