nov dic ene feb m ar abr m ay jun jul ago sep oct nov dic 0 100 200 300 400 500 N C P ( m m o l O 2 m - 2 d - 1 ) B P ( m m o l C m 2 d - 1 ) nov dic ene feb m ar abr m ay jun jul ago sep oct nov dic 0 20 40 60 80 100 bacterialproduction prim ary production 0 20 40 60 80 100 NET ECOSYSTEM METABOLISM IN THE NW IBERIAN UPWELLING SYSTEM ON AN ANNUAL CYCLE C.G.Castro, Arbones B, Alvarez-Salgado XA, Alonso-Pérez F, Froján M, Zúñiga D, Teixeira IG, and Figueiras FG Instituto de Investigaciones Marinas (CSIC) The 45 th International Liège Colloquium 13 th – 17 th May 2013
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NCP ( mmol O 2 m -2 d -1 ) BP (mmol C m 2 d -1 ) NET ECOSYSTEM METABOLISM IN THE NW IBERIAN UPWELLING SYSTEM ON AN ANNUAL CYCLE C.G.Castro, Arbones B,
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nov dic ene feb mar abr may jun jul ago sep oct nov dic
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NET ECOSYSTEM METABOLISM IN THE NW IBERIAN UPWELLING SYSTEM
ON AN ANNUAL CYCLE
C.G.Castro, Arbones B, Alvarez-Salgado XA, Alonso-Pérez F, Froján M, Zúñiga D, Teixeira IG, and Figueiras FG
Instituto de Investigaciones Marinas (CSIC)
The 45th International Liège Colloquium13th – 17th May 2013
Aristegui
Arístegui et al. 2009
CAIBEX: Shelf –ocean exchanges in the Canaries- Iberian LargeMarine Ecosystem
Background
Northern boundary of the Canary Current upwelling
system
Seasonal variation:
Upwelling: April to September
Downwelling: October to March
Ex(103 m3 s-1 Km-1)
-0.6-0.30.00.30.6
ME
S
A
M
F
E
D
N
O
SA
J
J
M
MO
NTH
Upwelling index (1987-2004)
Courtesy of RMS from PML
UPWELLING
Background
Courtesy of RMS from PML
DOWNWELLING
Upwelling index (103 m3 s-1 Km-1)
E
Background
High rates of primary production during the upwelling period (2.5 g C m-2 d-1), dominated by large – sized diatoms (Varela et al., 1991; Teira et al., 2001; Figueiras et al., 2001; Tilstone et al., 2003)
Espinoza et al. 2012
Objectives
To study the fate of fixed carbon based on direct measurements of
gross primary production, pelagic respiration and vertical export of
organic matter and explore the linkage between Production /
Respiration balance and size structure and composition of the