D. Archer and A. Devol, Benthic oxygen fluxes on the Washington shelf and slope: A comparison of in situ microelectrode and chamber flux measurements, Limnology and Oceanography, vol.37, issue.3, pp.614-629, 1992.
DOI : 10.4319/lo.1992.37.3.0614

S. Saito, K. R. Takeda, M. J. Timmermans, A. M. Veldhuis, C. Waite et al., Synthesis of iron fertilization experiments: From the Iron Age in the Age 595 of Enlightenment, J. Geophys. Res, vol.110, p.24, 1029.

B. M. Balino, M. J. Fasham, and M. C. Bowles, Ocean biogeochemistry and global change, 2001.

A. Bard and L. R. Faulkner, Electrochemical methods: Fundamentals and Applications, 2001.

C. Barus, Etude électrochimique de molecules antioxydantes et de leur association en milieux homogène et biphasique-Application aux produits dermocométiques, p.67, 2008.

L. Beaufort, I. Probert, T. De-garidel-thoron, E. M. Bendif, D. Ruiz-pino et al., Sensitivity of coccolithophores to carbonate chemistry and ocean acidification, Nature, vol.399, issue.7358, pp.80-83, 2011.
DOI : 10.1038/nature10295

URL : https://hal.archives-ouvertes.fr/hal-00866853

N. L. Bindoff, J. Willebrand, V. Artale, A. Cazenave, J. Gregory et al., Observations: Oceanic Climate Change and Sea Level, 2007.
URL : https://hal.archives-ouvertes.fr/hal-00287145

M. Averyt, H. L. Tignor, and . Miller, Climate Change 2007: The Physical Science Basis. Contributions of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change

J. Bockris, . O-'m, and A. K. Reddy, Modern electrochemistry-An introduction to an interdisciplinary area, 1970.

J. A. Brandes, A. H. Devol, and C. Deutsch, New Developments in the Marine Nitrogen Cycle, Chemical Reviews, vol.107, issue.2, pp.577-589, 2007.
DOI : 10.1021/cr050377t

K. W. Bruland, E. L. Rue, G. J. Smith, and G. R. Ditullio, Iron, macronutrients and diatom blooms in the Peru upwelling regime: brown and blue waters of Peru, Marine Chemistry, vol.93, issue.2-4, pp.81-103, 2005.
DOI : 10.1016/j.marchem.2004.06.011

R. Bucher, Electrolytes in polarographic oxygen sensors, p.66, 1983.

N. G. Carpenter, A. W. Hodgson, and D. Pletcher, Microelectrode procedures for the determination of silicate and phosphate in waters - fundamental studies, Electroanalysis, vol.54, issue.16, pp.1311-1317, 1997.
DOI : 10.1002/elan.1140091703

A. Chaigneau and O. Pizzaro, Mean surface circulation and mesoscale turbulent flow characteristics in the eastern South Pacific from satellite tracked drifters, Journal of Geophysical Research, vol.109, issue.C5, p.5014, 2005.
DOI : 10.1029/2004JC002628

URL : https://hal.archives-ouvertes.fr/hal-00123741

A. Chaigneau and O. Pizarro, Surface circulation and fronts of the South Pacific Ocean, east of 120??W, Geophysical Research Letters, vol.106, issue.11, p.8605, 2005.
DOI : 10.1029/2004GL022070

URL : https://hal.archives-ouvertes.fr/hal-00123740

F. Chan, J. A. Barth, J. Lubchenco, A. Kirincich, H. Weeks et al., Emergence of Anoxia in the California Current Large Marine Ecosystem, Emegence of anoxia in the California Current large marine ecosystem, p.920, 2008.
DOI : 10.1126/science.1149016

Z. Chen, P. Grierson, and M. A. Adams, Direct determination of phosphate in soil extracts by potentiometric flow injection using a cobalt wire electrode, Analytica Chimica Acta, vol.363, issue.2-3, pp.93-97, 1998.
DOI : 10.1016/S0003-2670(98)00137-8

W. Cheng, S. Jun-wei, C. Wei, J. L. Chang, and J. Zen, Activated Nickel Platform for Electrochemical Sensing of Phosphate, Analytical Chemistry, vol.82, issue.3, pp.1157-1161, 2010.
DOI : 10.1021/ac9025253

S. W. Chisholm, Stirring times in the Southern Ocean, Nature, vol.407, issue.6805, pp.685-687, 2000.
DOI : 10.1038/35037696

A. C. Clement and L. C. Peterson, Mechanisms of abrupt climate change of the last glacial period, Reviews of Geophysics, vol.31, issue.C6, pp.10-1029, 2008.
DOI : 10.1029/2006RG000204

L. A. Codispoti and J. P. Christensen, Nitrification, denitrification and nitrous oxide cycling in the eastern tropical South Pacific ocean, Marine Chemistry, vol.16, issue.4, pp.277-300, 1985.
DOI : 10.1016/0304-4203(85)90051-9

F. Colas, X. Capet, J. C. Mcwilliams, and A. Shcheptkin, 1997???1998 El Ni??o off Peru: A numerical study, El Nino off Peru: A numerical study, pp.138-155, 1997.
DOI : 10.1016/j.pocean.2008.10.015

A. B. Colling, Ocean Circulation. The Open University, 2004.

R. G. Compton, G. H. Sanders, R. G. Banks, and C. E. , Electrode potentials, 1996.

M. Cornejo and L. Farijas, Following the N<sub>2</sub>O consumption at the Oxygen Minimum Zone in the eastern South Pacific, Biogeosciences Discussions, vol.9, issue.3, pp.2691-2707, 2012.
DOI : 10.5194/bgd-9-2691-2012

J. Crank, The mathematics of diffusion, p.414, 1989.

T. Dalsgaard, D. E. Canfield, J. Petersen, B. Thamdrup, and J. Acun-gonzales, N2 production by the anammox reaction in the anoxic water column of Golfo Dulce, Costa Rica, Nature, vol.37, issue.6932, pp.606-608, 2003.
DOI : 10.1016/S0016-7037(01)00787-6

L. Delauney, C. Compère, and M. Lehaitre, Biofouling protection for marine environmental sensors, Ocean Science, vol.6, issue.2, pp.503-511, 2010.
DOI : 10.5194/os-6-503-2010

K. Denman, Couplings between Changes in the Climate System and Biogeochemistry. In : Climate Change 2007 : The Physical Science Basis. Contribution to Working Group I to the Fourth Assessment Report on the IPCC, 2007.

G. H. Denton and C. H. Hendy, Younger Dryas Age Advance of Franz Josef Glacier in the Southern Alps of New Zealand, Science, vol.264, issue.5164, pp.1434-1437, 1994.
DOI : 10.1126/science.264.5164.1434

G. Denuault, Electrochemical techniques and sensors for ocean research, Ocean Science, vol.5, issue.4, pp.697-710, 2009.
DOI : 10.5194/os-5-697-2009

S. K. Dhawan, D. Kumar, M. K. Ram, S. Chandra, and D. C. Trivedi, Application of conducting polyaniline as sensor material for ammonia, Sensors and Actuators B: Chemical, vol.40, issue.2-3, pp.99-103, 1997.
DOI : 10.1016/S0925-4005(97)80247-X

R. J. Diaz and R. Rosenberg, Spreading Dead Zones and Consequences for Marine Ecosystems, Science, vol.321, issue.5891, pp.926-929, 2008.
DOI : 10.1126/science.1156401

T. D. Dickey, The Role of New Technology in Advancing Ocean Biogeochemical Research, Oceanography, vol.14, issue.4, pp.417-425, 2001.
DOI : 10.5670/oceanog.2001.11

S. C. Doney, V. J. Fabry, R. A. Feely, and J. A. Kleypas, Problem, Annual Review of Marine Science, vol.1, issue.1, pp.169-192, 2009.
DOI : 10.1146/annurev.marine.010908.163834

L. Drummond and W. Maher, Determination of phosphorus in aqueous solution via formation of the phosphoantimonylmolybdenum blue complex. Re-examination of optimum conditions for the analysis of phosphate, Analytica Chimica Acta, vol.302, issue.1, pp.69-74, 1995.
DOI : 10.1016/0003-2670(94)00429-P

A. N. Ejhieh and M. Neda, Application of a new potentiometric method for determination of phosphate based on a surfactant-modified zeolite carbon-paste electrode (SMZ-CPE), Analytica Chimica Acta, vol.658, issue.1, pp.68-74, 2010.
DOI : 10.1016/j.aca.2009.10.064

L. Farias, A. Paulimer, and L. Gallegos, Nitrous oxide and N-nutrient cycling along the oxygen minimum zone off northern Chile, Deep-Sea Res, pp.164-180, 2007.

C. Fernandez, L. Farias, and O. Ulloa, Nitrogen Fixation in Denitrified Marine Waters, PLoS ONE, vol.5, issue.7, p.20536, 2011.
DOI : 10.1371/journal.pone.0020539.s007

P. C. Fiedler and L. D. Talley, Hydrography of the eastern tropical Pacific: A review, Progress in Oceanography, vol.69, issue.2-4, pp.143-180, 2006.
DOI : 10.1016/j.pocean.2006.03.008

P. C. Fiedler, Seasonal and interannual variability of coastal zone color scanner phytoplankton pigments and winds in the eastern tropical Pacific, Journal of Geophysical Research, vol.11, issue.1, pp.18371-18384, 1994.
DOI : 10.1029/94JC01807

J. P. Fischer and F. Wenzhofer, A novel planar optode setup for concurrent oxygen and light field imaging: Application to a benthic phototrophic community, Limnology and Oceanography: Methods, vol.8, issue.6, pp.254-268, 2010.
DOI : 10.4319/lom.2010.8.254

A. G. Fogg and N. K. Bsebsu, Differential-pulse voltammetric determination of phosphate as molybdovanadophosphate at a glassy carbon electrode and assessment of eluents for the flow injection voltammetric determination of phosphate, silicate, arsenate and germanate, The Analyst, vol.106, issue.1269, pp.1288-1295, 1981.
DOI : 10.1039/an9810601288

J. Franz, G. Krahmann, G. Lavik, P. Grasse, T. Diimar et al., Dynamics and stoichiometry of nutrients and phytoplankton in waters influenced by the oxygen minimum zone in the eastern tropical Pacific, Deep-Sea Res. I, pp.20-31, 2012.

A. Galan, V. Molina, B. Thamdrup, D. Woebken, G. Lavik et al., Anammox bacteria and the anaerobic oxidation of ammonium in the oxygen minimum zone of nothern Chile, Deep-Sea Res, pp.1125-1135, 2009.

M. Z. Ganjali, P. Norouzi, M. Ghomi, and M. Salavati-niasari, Highly selective and sensitive monohydrogen phosphate membrane sensor based on molybdenum acetylacetonate, Analytica Chimica Acta, vol.567, issue.2, pp.196-201, 2006.
DOI : 10.1016/j.aca.2006.03.026

M. Giraud, Signature des phosphates dans l'OMZ du Pérou, Master Thesis Glantz, M. Currents of change: Impacts of El Nino and La Nina on Climate and Society, 2001.

B. T. Glazer, A. G. Marsh, K. Stierhoff, I. Luther, and G. W. , The dynamic response of optical oxygen sensors and voltammetric electrodes to temporal changes in dissolved oxygen concentrations, Analytica Chimica Acta, vol.518, issue.1-2, pp.93-100, 2004.
DOI : 10.1016/j.aca.2004.05.040

M. S. Glessmer, W. Park, and A. Oschlies, Simulated reduction in upwelling of tropical oxygen minimum waters in a warmer climate, Environmental Research Letters, vol.6, issue.4, pp.10-1088, 1748.
DOI : 10.1088/1748-9326/6/4/045001

M. Graco, J. Ledesma, G. Flores, and M. Giron, Nutrients, oxygen and biogeochemical processes in the Humboldt upwelling current system off Peru, Rev. Peru. Biol, vol.14, issue.1, pp.117-128, 2007.

C. Grados, A. Chaigneau, M. Graco, and J. Ledesma, Regional oceanographic scenery and water mass distribution in the coastal VOCALS REx region in The second VOCALS Meeting, 2008.

J. Greenblatt and J. Sarmiento, Variability and climate feedback mechanisms in ocean uptake of CO 2, The Global Carbon Cycle, pp.257-275, 2004.

. Takahashi, Oceanic sources, sinks, and transport of atmospheric CO 2, Global Biogeochem. Cycles, vol.23, pp.10-1029, 1005.

B. Grundig, G. Wittstock, U. Rudel, and B. Strehlitz, Mediator-modified electrodes for electrocatalytic oxidation of NADH, Journal of Electroanalytical Chemistry, vol.395, issue.1-2, pp.143-157, 1995.
DOI : 10.1016/0022-0728(95)04090-B

L. Guanghan, W. Xiaogang, L. Yanhua, and Y. Shenlai, Studies on 1:12 phosphomolybdic heteropoly anion film modified carbon paste electrode, Talanta, vol.49, issue.3, pp.511-515, 1999.
DOI : 10.1016/S0039-9140(99)00038-7

J. K. Gundersen, N. B. Ramsing, and R. N. Glud, Predicting the signal of O 2 microsensors from physical dimensions, salinity and O 2 concentration, Limnol. Oceanogr, vol.43, 1932.

J. M. Hale, E. Gnaiger, and H. Forstner, Factors Influencing the Stability of Polarographic Oxygen Sensors, Polarographic Oxygen Sensors, p.3, 1983.
DOI : 10.1007/978-3-642-81863-9_1

M. R. Hamerseley, G. Lavik, D. Woebken, J. E. Rattray, P. Lam et al., Anaerobic ammonium oxidation in the Peruvian oxygen minimum zone, Limnology and Oceanography, vol.52, issue.3, pp.923-933, 2007.
DOI : 10.4319/lo.2007.52.3.0923

S. M. Harden and W. K. Nonidez, Determination of orthophosphate by flow injection analysis with amperometric detection, Analytical Chemistry, vol.56, issue.12, pp.2218-2223, 1984.
DOI : 10.1021/ac00276a053

W. Helder and J. F. Bakker, Shipboard comparison of micro- and minielectrodes for measuring oxygen distribution in marine sediments, Limnology and Oceanography, vol.30, issue.5, p.1106, 1985.
DOI : 10.4319/lo.1985.30.5.1106

B. Herstkotte, J. C. Alonso, M. Miro, and V. Cerda, A multisyringe flow injection Winkler-based spectrophotometric analyzer for in-line monitoring of dissolved oxygen in seawater, Talanta, vol.80, issue.3, pp.1341-1346, 2010.
DOI : 10.1016/j.talanta.2009.09.034

D. A. Hutchins, C. E. Hare, R. S. Weaver, Y. Zhang, C. F. Firme et al., Phytoplankton iron limitation in the Humboldt Current and Peru Upwelling, Phytoplankton iron limitation in the Humboldt Current and Peru, pp.997-1011, 2002.
DOI : 10.4319/lo.2002.47.4.0997

A. Huyer, R. L. Smith, and T. Paluszkiewicz, Coastal upwelling off Peru during normal and El Nino times, J. Geophys. Res, issue.14, pp.92-14297, 1987.
DOI : 10.1029/jc092ic13p14297

URL : http://ir.library.oregonstate.edu/xmlui/bitstream/1957/18788/1/Huyer_et_al_JGR_1987.pdf

A. Huyer, T. Knoll, T. Paluszkiewic, and . Smith, The Peru Undercurrent: a study in variability, Deep Sea Research Part A. Oceanographic Research Papers, vol.38, pp.247-271, 1991.
DOI : 10.1016/S0198-0149(12)80012-4

E. Ingall and R. Jahnke, Evidence for enhanced phosphorus regeneration from marine sediments overlain by oxygen depleted waters, Geochimica et Cosmochimica Acta, vol.58, issue.11, pp.2571-2575, 1994.
DOI : 10.1016/0016-7037(94)90033-7

A. K. Jain, V. K. Gupta, and J. R. Raisoni, A newly synthesized macrocyclic dithioxamide receptor for phosphate sensing, Talanta, vol.69, issue.4, pp.1007-1012, 2006.
DOI : 10.1016/j.talanta.2005.12.023

K. S. Johnson, Observing biogeochemical cycles at global scales with profiling floats and gliders, pp.216-225, 2009.

K. S. Johnson, State of technology in the development and application of nutrient sensors, Alliance for Coastal technology, pp.1-9, 2003.

J. Jo?ca, V. Leon-fernandez, D. Thouron, A. Paulmier, M. Graco et al., Phosphate determination in seawater: Toward an autonomous electrochemical method, Talanta, vol.87, pp.161-167, 2011.
DOI : 10.1016/j.talanta.2011.09.056

W. S. Kessler, The circulation of the eastern tropical Pacific: A review, Progress in Oceanography, vol.69, issue.2-4, pp.181-217, 2006.
DOI : 10.1016/j.pocean.2006.03.009

R. F. Keeling, A. Kortzinger, and N. Gruber, Ocean Deoxygenation in a Warming World, Ocean deoxygenation in a warming world, pp.199-229, 2010.
DOI : 10.1146/annurev.marine.010908.163855

R. Kérouel and A. Aminot, Proc??dure Optimis??e Hors-contaminations pour l'Analyse des el??ments nutritifs dissous dans l'eau de mer, Marine Environmental Research, vol.22, issue.1, pp.19-32, 1987.
DOI : 10.1016/0141-1136(87)90079-1

F. Kivlehan, W. J. Mace, H. A. Moynihan, and D. W. Arrigan, Potentiometric evaluation of calix[4]arene anion receptors in membrane electrodes: Phosphate detection, Analytica Chimica Acta, vol.585, issue.1, pp.154-160, 2007.
DOI : 10.1016/j.aca.2006.11.078

M. Kuhl and N. P. Revsbech, Microsensors for the study of interfacial biogeochemical processes, 2000.

M. Kuypers, A. Sliekers, . Lavik, M. Schmidt, B. Jorgensen et al., Anaerobic ammonium oxidation by anammox bacteria in the Black Sea, Nature, vol.38, issue.6932, pp.608-611, 2003.
DOI : 10.1023/A:1008848203739

P. Lam, G. Lavik, M. M. Jensen, J. Ven-de-vossenberg, M. Schmid et al., Revising the nitrogen cycle in the Peruvian oxygen minimum zone, Proceedings of the National Academy of Sciences, vol.106, issue.12, pp.106-4725, 2009.
DOI : 10.1073/pnas.0812444106

P. Lam and M. M. Kuypers, Microbial Nitrogen Cycling Processes in Oxygen Minimum Zones, Annual Review of Marine Science, vol.3, issue.1, pp.317-245, 2011.
DOI : 10.1146/annurev-marine-120709-142814

A. T. Lawal and S. B. Adeloju, Comparison of enzyme immobilisation methods for potentiometric phosphate biosensors, Biosensors and Bioelectronics, vol.25, issue.2, pp.406-410, 2009.
DOI : 10.1016/j.bios.2009.07.024

K. Lee, S. Choi, G. Park, R. Wanninkhof, T. Peng et al., An updated anthropogenic CO2 inventory in the Atlantic ocean, Global Biogeochem. Cycles, vol.17, issue.4, p.1116, 2003.

L. Levin, Oxygen Minimum Zones: Adaptation and community response to hypoxia, Oceanography and Marine Biology, vol.41, pp.1-45, 2003.

X. Lin, X. Wu, Z. Xie, and K. Wong, PVC matrix membrane sensor for fluorescent determination of phosphate, Talanta, vol.70, issue.1, pp.32-36, 2006.
DOI : 10.1016/j.talanta.2006.01.026

B. J. Little, J. S. Lee, and R. I. Ray, The influence of marine biofilms on corrosion: A concise review, Electrochimica Acta, vol.54, issue.1, pp.2-7, 2008.
DOI : 10.1016/j.electacta.2008.02.071

R. Lucas, The termination of the Equatorial Undercurrent in the eastern Pacific, Progress in Oceanography, vol.16, issue.2, pp.63-90, 1986.
DOI : 10.1016/0079-6611(86)90007-8

I. Luther, G. W. Glazer, B. T. Ma, S. Trouwborst, R. E. Moore et al., Use of voltammetric solid-state (micro)electrodes for studying biogeochemical processes: Laboratory measurements to real time measurements with an in situ electrochemical analyzer (ISEA), Marine Chemistry, vol.108, issue.3-4, pp.221-235, 2008.
DOI : 10.1016/j.marchem.2007.03.002

I. Luther, G. W. Glazer, B. Hohmann, L. Popp, J. Taillefert et al., Sulfur speciation monitored in situ with solide state gold amalgam voltammetric micorelectrodes: polysulfides as a special case in sediments, microbial mats and hydrothermal vent waters, J. Environ. Monitor, vol.3, p.66, 2001.

E. Maier-reimer, U. Mikolajewicz, and A. Winguth, Future ocean uptake of CO2: interaction between ocean circulation and biology, Climate Dynamics, vol.12, issue.10, pp.711-721, 1996.
DOI : 10.1007/s003820050138

K. Matsunaga, I. Kudo, and M. Yanada, Differential-pulse anodic voltammetric determination of dissolved and adsorbed phosphate in turbid natural waters, Analytica Chimica Acta, vol.185, pp.355-358, 1986.
DOI : 10.1016/0003-2670(86)80066-6

G. A. Meehl, F. Stocker, T. , D. Collins, W. et al., Global climate projections -Chapter 10 In The Physical Science Basis, Contribution of Working group 1 to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Fourth Assessment Report of the Intergovernmental Panel on Climate Change, 2007.

F. J. Millero, The Marine Inorganic Carbon Cycle, Chemical Reviews, vol.107, issue.2, pp.308-341, 2007.
DOI : 10.1021/cr0503557

Y. Montes, F. Colas, X. Capet, and W. Schneider, On the pathways of the equatorial subsurface currents in the eastern equatorial Pacific and their contributions to the Peru-Chile Undercurrent, Journal of Geophysical Research, vol.1, issue.C3, p.9003, 2010.
DOI : 10.1029/2009JC005710

URL : https://hal.archives-ouvertes.fr/hal-00580614

J. Murphy and J. P. Riley, A modified single solution method for the determination of phosphate in natural waters, Analytica Chimica Acta, vol.27, pp.31-36, 1962.
DOI : 10.1016/S0003-2670(00)88444-5

H. Nakamura, K. Ikebukuro, C. Mcniven, I. Karube, H. Yamamoto et al., A chemiluminescent FIA biosensor for phosphate ion monitoring using pyruvate oxidase, Biosens. Bioelectron, vol.1210, issue.9, pp.959-966, 1997.

S. W. Naqvi, S. Gupta, and M. Dileepkumar, Carbon dioxide and nitrous oxide in the Arabian Sea, Interactions between global climate subsystems: the legacy of Hann. (Geophysical Monograph; 15) AGU, pp.85-92, 1993.
DOI : 10.1029/GM075p0085

S. W. Naqui and R. J. Noronha, Nitrous oxide in the Arabian sea, Deep-Sea Res, pp.871-891, 1991.

A. Oschlies, K. G. Schulz, U. Riebesell, and A. Schmittner, Simulated 21st century's increase in oceanic suboxia by CO 2 -enhanced biotic carbon export, Global Biogeochemical Cycles, vol.4008, pp.10-1029, 2008.

A. Paulmier, D. Ruiz-pino, V. Garçon, and L. Farias, Monitoring of the Eastern South Pacific Oxygen Minimum Zone (OMZ) off Chile, Geophysic.Res. Lett, vol.33, issue.20, pp.1-6, 2006.

A. Paulmier, D. Ruiz-pino, and V. Garçon, The oxygen minimum zone (OMZ) off Chile as intense source of CO2 and N2O, Continental Shelf Research, vol.28, issue.20, pp.2746-2756, 2008.
DOI : 10.1016/j.csr.2008.09.012

URL : https://hal.archives-ouvertes.fr/hal-00402563

A. Paulmier and D. Ruiz-pino, Oxygen minimum zones (OMZs) in the modern ocean, Progress in Oceanography, vol.80, issue.3-4, pp.113-128, 2009.
DOI : 10.1016/j.pocean.2008.08.001

URL : https://hal.archives-ouvertes.fr/hal-00402527

A. Paytan and K. Mclaughlin, The Oceanic Phosphorus Cycle, Chemical Reviews, vol.107, issue.2, pp.563-576, 2007.
DOI : 10.1021/cr0503613

P. Penven, V. Echevin, J. Pasapera, F. Colas, and . J. Tam, Average circulation, seasonal cycle, and mesoscale dynamics of the Peru Current System: A modeling approach, Journal of Geophysical Research, vol.1, issue.C3, p.10021, 2005.
DOI : 10.1029/2005JC002945

URL : https://hal.archives-ouvertes.fr/hal-00124816

R. D. Prien, The future of chemical in situ sensors, Marine Chemistry, vol.107, issue.3, pp.422-432, 2007.
DOI : 10.1016/j.marchem.2007.01.014

J. C. Quintana, L. Idrissi, G. Palleschi, P. Albertano, A. Amine et al., Investigation of amperometric detection of phosphate Application in seawater and cyanobacterial biofilm samples, Talanta, vol.63, issue.3, pp.567-574, 2004.
DOI : 10.1016/j.talanta.2003.11.040

S. Rahmstorf, Thermohaline circulation: The current climate, Nature, vol.421, issue.6924, pp.699-699, 2003.
DOI : 10.1038/421699a

A. C. Redfield, The biological control of chemical factors in the environment, Am. Sci, vol.64, pp.205-221, 1958.

J. L. Reid, On the total geostrophic circulation of the pacific ocean: flow patterns, tracers, and transports, Progress in Oceanography, vol.39, issue.4, pp.263-352, 1997.
DOI : 10.1016/S0079-6611(97)00012-8

C. E. Reimers, R. N. Glud, M. Varney, B. Gordon, G. Reverdin et al., In situ chemical measurements at the sediment-water interface, In chemical sensors in oceanography ed Seasonal variability in the surface currents of the equatorial Pacific, J.Geophysic. Res, vol.99, pp.20323-20344, 1994.

N. P. Revsbech, L. H. Larsen, J. Gundersen, T. Dalsgaard, O. Ulloa et al., Determination of ultra-low oxygen concentrations in oxygen minimum zones by the STOX sensor, Limnology and Oceanography: Methods, vol.7, issue.5, pp.371-381, 2009.
DOI : 10.4319/lom.2009.7.371

N. P. Revsbech, An oxygen microsensor with a guard cathode, Limnology and Oceanography, vol.34, issue.2, p.474, 1989.
DOI : 10.4319/lo.1989.34.2.0474

N. P. Revsbech and B. B. Jorgensen, Microelectrodes: Their Use in Microbial Ecology, Adv. Microb. Ecol, vol.9, p.293, 1986.
DOI : 10.1007/978-1-4757-0611-6_7

D. Roemmich, W. J. Gould, and J. Gilson, 2012: 135 years of global ocean warming from the Challenger Expedition to the Argo Program Nature Climate Change, DOI: 10, 1038.

D. Roemmich and J. Gilson, The 2004???2008 mean and annual cycle of temperature, salinity, and steric height in the global ocean from the Argo Program, Progress in Oceanography, vol.82, issue.2, pp.81-100, 2009.
DOI : 10.1016/j.pocean.2009.03.004

D. Roemmich, S. Riser, R. Davis, and Y. Desaubies, Autonomous profiling floats: Workhorse for broadscale ocean observations. Mar, Technol. Soc. J, vol.38, issue.2, pp.21-29, 2004.

E. Ryabenko, A. Kock, H. W. Bange, M. A. Altabet, and D. W. Wallace, Contrasting biogeochemistry of nitrogen in the Atlantic and Pacific oxygen minimum zones, Biogeosciences Discussions, vol.8, issue.4, pp.8001-8039, 2012.
DOI : 10.5194/bgd-8-8001-2011

C. Sabine, R. Feely, N. Gruber, R. Key, K. Lee et al., The Oceanic Sink for Anthropogenic CO2, Science, vol.305, issue.5682, pp.305367-371, 2004.
DOI : 10.1126/science.1097403

M. A. Saeed, D. R. Powell, and H. Md, Fluorescent detection of phosphate anion by a highly selective chemosensor in water, Tetrahedron Letters, vol.51, issue.37, pp.4904-4907, 2010.
DOI : 10.1016/j.tetlet.2010.07.078

W. Schnaider, R. Fuenzalida, E. Rodriguez-rubio, and J. Garces-vargas, Characteristics and formation of Eastern South Pacific Intermediate Water, Geophysical Research Letters, vol.106, issue.4, pp.30-1581, 2003.
DOI : 10.1029/2003GL017086

N. Silva, N. Rojas, and A. Fedele, Water masses in the Humboldt Current System: Properties, distribution, and the nitrate deficit as a chemical water mass tracer for Equatorial Subsurface Water off Chile, Deep Sea Research Part II: Topical Studies in Oceanography, vol.56, issue.16, pp.1004-1020, 2009.
DOI : 10.1016/j.dsr2.2008.12.013

N. Silva and S. Neshiba, On the southermost extension of the Peru-Chile Undercurrent, Deep -Sea Res, pp.1387-1393, 1979.

L. Stramma, G. C. Johnson, J. Sprintall, and V. Mahrholz, Expanding Oxygen-Minimum Zones in the Tropical Oceans, Science, vol.320, issue.5876, pp.655-658, 2008.
DOI : 10.1126/science.1153847

L. Stramma, S. Schmidko, L. Levin, and G. C. Johnson, Ocean oxygen minima expansions and their biological impacts, Deep Sea Research Part I: Oceanographic Research Papers, vol.57, issue.4, pp.587-595, 2010.
DOI : 10.1016/j.dsr.2010.01.005

L. Stramma, A. Oschlies, and S. Schmidtko, Anticorrelated observed and modelled trends in dissolved oceanic oxygen over the last 50 years, Biogeosciences Discuss, pp.4595-4626, 2012.

J. D. Strickland, R. W. Eppley, and B. R. De-mendiola, Phytoplankton populations, nutrients and photosynthesis in Peruvian coastal waters, Bol.-Inst. Mar. Peru, vol.2, pp.4-45, 1969.

J. D. Strickland and T. R. Parsons, A practical handbook of seawater analysis, Bulletin Fisheries Research Board of Canada, vol.167, 1972.

W. G. Sunda, Iron and the Carbon Pump, Science, vol.327, issue.5966, pp.654-655, 2010.
DOI : 10.1126/science.1186151

P. T. Strub, J. M. Mesias, V. Montecino, J. Rutlant, and S. Salinas, Coastal ocean circulation off western South America The Sea, Coastal Segment, vol.6, 1998.

P. T. Strub, J. Mesias, and C. James, Altimeter observations of the Peru-Chile countercurrent, Geophysical Research Letters, vol.8, issue.4, pp.211-214, 1995.
DOI : 10.1029/94GL02807

H. U. Sverdrup, Wind-Driven Currents in a Baroclinic Ocean; with Application to the Equatorial Currents of the Eastern Pacific, Proc. Natl. Acad. Sci. USA, pp.318-326, 1947.
DOI : 10.1073/pnas.33.11.318

A. Johannessen, R. Olsen, A. Bellerby, T. Körtzinger, M. Steinhoff et al., Climatological mean and decadal change in surface ocean pCO 2 , and net sea?air CO 2 flux over the global oceans, Deep Sea Res. Part II, vol.56, pp.554-577, 2009.
URL : https://hal.archives-ouvertes.fr/hal-00763263

T. Tanaka, M. Miuran, and T. Ishiyama, ADSORPTIVE VOLTAMMETRIC DETERMINATION OF ORTHOPHOSPHATE AT A GLASSY CARBON ELECTRODE, Journal of Trace and Microprobe Techniques, vol.53, issue.4, pp.591-599, 2001.
DOI : 10.1081/TMA-100107594

J. Tarazona, D. Gutierrez, C. Paredes, and A. Indacochea, Overview and challenges of Marine Biodiversity Research in Peru, Gayana (Concepci??n), vol.67, issue.2, pp.206-231, 2003.
DOI : 10.4067/S0717-65382003000200009

M. L. Tercier-waeber, F. Confalonieri, G. Riccardi, A. Sina, S. Nöel et al., Multi Physical???Chemical profiler for real-time in situ monitoring of trace metal speciation and master variables: Development, validation and field applications, Marine Chemistry, vol.97, issue.3-4, pp.973-977, 2005.
DOI : 10.1016/j.marchem.2005.03.004

M. L. Tercier-waeber, J. Buffle, F. Confalonieri, G. Riccardi, A. Sina et al., Submersible voltammetric probes for in situ real-time trace element measurements in surface water, groundwater and sediment-water interface, Measurement Science and Technology, vol.10, issue.12, pp.1202-1213, 1999.
DOI : 10.1088/0957-0233/10/12/312

B. Thamdrup, T. Dalsgaard, M. M. Jensen, O. Ulloa, L. Farias et al., Anaerobic ammonium oxidation in the oxygen-deficient waters off northern Chile, Limnology and Oceanography, vol.51, issue.5, pp.2145-2156, 2006.
DOI : 10.4319/lo.2006.51.5.2145

D. Thouron and V. Garçon, ANAIS: Analyzeur de sels nutritifs autonome in situ: 1995-2005: développement, validation, fiabilisation, Avenir?, p.45, 2006.

D. Thouron, R. Vuillemin, X. Philippon, A. Lourenço, C. Provost et al., An Autonomous Nutrient Analyzer for Oceanic Long-Term in Situ Biogeochemical Monitoring, Analytical Chemistry, vol.75, issue.11, pp.2601-2609, 2003.
DOI : 10.1021/ac020696+

J. R. Toggweiler, K. Dixon, and . Broecker, The Peru upwelling and the ventilation of the south Pacific thermocline, Journal of Geophysical Research, vol.211, issue.C11, pp.20467-20497, 1991.
DOI : 10.1029/91JC02063

J. R. Toggweiler and J. Russell, Ocean circulation in a warming climate, Nature, vol.296, issue.7176, pp.451286-288, 2008.
DOI : 10.1038/nature06590

M. Trojanowicz, A. Lewenstam, T. K. Krawczyk, I. Lahdesmaki, and W. Szczepek, Flow injection amperometric detection of ammonia using a polypyrrole-modified electrode and its application in urea and creatinine biosensors, Electroanalysis, vol.307, issue.14, pp.233-243, 1996.
DOI : 10.1002/elan.1140080307

Y. Udnan, I. D. Mckelvie, M. R. Grace, J. Jakmunee, and K. Grudpan, Evaluation of on-line preconcentration and flow-injection amperometry for phosphate determination in fresh and marine waters, Talanta, vol.66, issue.2, pp.461-466, 2005.
DOI : 10.1016/j.talanta.2004.12.064

M. Whitfield and D. Jagner, Marine electrochemistry: A practical introduction, p.542, 1981.

L. W. Winkler, Die Bestimmung des im Wasser gel??sten Sauerstoffes, Berichte der deutschen chemischen Gesellschaft, vol.75, issue.2, p.2843, 1888.
DOI : 10.1002/cber.188802102122

C. Wunsch, OCEANOGRAPHY: What Is the Thermohaline Circulation?, Science, vol.298, issue.5596, pp.1179-1180, 2002.
DOI : 10.1126/science.1079329

K. Wyrtki, Circulation and water masses in the Eastern Equatorial Pacific Ocean, Int. J. Oceanol. Limnol, vol.1, issue.2, pp.117-147, 1963.

A. Vaquer-sunyer and C. M. Duarte, Thresholds of hypoxia for marine biodiversity, Proceedings of the National Academy of Sciences, vol.105, issue.40, pp.15452-15457, 2008.
DOI : 10.1073/pnas.0803833105

M. Varney, Chemical sensors in oceanography, Gordon and Breach: Amsterdam, The Netherlands, p.333, 2000.

R. Vuillemin, D. Thouron, G. Gallou, L. Pares, B. Brient et al., ANAIS : Autonomous nutrient analyzer in situ, Sea Technol, vol.40, pp.75-78, 1999.

T. Yao, K. Takashima, and Y. Nanjyo, Simultaneous determination of orthophosphate and total phosphates (inorganic phosphates plus purine nucleotides) using a bioamperometric flow-injection system made up by a 16-way switching valve, Talanta, vol.60, issue.4, pp.845-851, 2003.
DOI : 10.1016/S0039-9140(03)00128-0

C. G. Zoski, Handbook of electrochemistry, 2007.

Z. Zou, . J. Han, A. Jang, P. L. Bishop, and C. H. Ahn, A disposable on-chip phosphate sensor with planar cobalt microelectrodes on polymer substrate, Biosensors and Bioelectronics, vol.22, issue.9-10, pp.1902-1907, 2007.
DOI : 10.1016/j.bios.2006.08.004