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Sergio Ruiz-Halpern

RESEARCH

Sergio My main research interests are generally oriented towards the study of biogeochemical cycles with a clear focus on the effects on, and effects of biota. Within this vast field I focus on processes occurring at the interphase, whether it be sediment-water interactions or air-water exchange. My earlier work investigated the beneficial effects of iron on seagrass growth by titration of toxic sulphur species. Later on, I focused on the air-sea boundary investigating the stocks of gaseous phase organic carbon both in air and water and evaluating the exchange rates, especially as it relates to the DOC pool in the water column and CO2 exchange. At SCU I will focus on carbonate biogeochemistry, both organic and inorganic using a variety of approaches including, but not limited to, spatial-temporal assessments, manipulative field experiments… and the suite of techniques available at the CCB facilities.

PUBLICATIONS

In Press/Accepted

Atkins, M., Santos, I. R., Ruiz-Halpern, S., Maher, D. T. 2013. Carbon dioxide dynamics driven by groundwater discharge in a coastal floodplain creek. Journal of Hydrology JIF = 3.271 (ERA Rank A*)

2012

E. Mayol,, S. Ruiz-Halpern, C. M. Duarte,, J. C. Castilla,, and J. L. Pelegrí. 2012 Coupled CO2 and O2-driven compromises to marine life in summer along the Chilean sector of the Humboldt Current System Biogeosciences, 9, 1183-1194 doi:10.5194/bg-9-1183-2012

2011

Sergio Ruiz-Halpern, Carlos M. Duarte, Antonio Tovar-Sánchez, Marcos Pastor, Burkhard Horstkotte, Sebastien Lasternas, Susana Agustí. 2011. Antarctic krill as a source of dissolved organic carbon to the ecosystem. Limnol. Oceanogr. 56(2), 521-528

2010

Sergio Ruiz-Halpern, Mikael K. Sejr, Carlos M. Duarte, Dorte Krause-Jensen, Tage Dalsgaard, Jordi Dachs, Søren Rysgaard. 2010. Air Water-Exchange and vertical profiles of organic carbon in a subarctic fjord. Limnol. Oceanogr. 55(4), 1733-1740

2009

Ortega-Retuerta, Eva; Frazer, Thomas K; Duarte, Carlos M. Duarte, Sergio Ruiz-Halpern, Antonio Tovar-Sánchez, Jesús M. Arrieta, and Isabel Reche. 2009. Biogeneration of chromophoric dissolved organic matter by bacteria and krill in the Southern Ocean . Limnol. and Oceanogr. 54, 1941-1950.

2008

Sergio Ruiz-Halpern, Stephen Macko, and James W. Fourqurean. 2008. The effects of manipulation of sedimentary iron and organic matter on sediment biogeochemistry and seagrasses in a subtropical carbonate environment. Biogeochemistry 87: 113-126.

2007

Fourqurean, J. W., N. Marbá, C. M. Duarte, E. Diaz-Almela, and S. Ruiz-Halpern. 2007. Spatial and temporal variation in the elemental and stable isotopic content of the seagrasses Posidonia oceanica and Cymodocea nodosa from the Illes Balears, Spain. Marine biology 151: 219-232

Rodrigo Torres, Silvio Pantoja, Naomi Harada, Humberto E. Gonzalez, Giovanni Daneri, Máximo Frangopulos, José A. Rutllant, Carlos M. Duarte, Sergio Ruiz-Halpern, Eva Mayol, Masao Fukasawa. Air-sea CO2 fluxes along the coast of Chile: From CO2 outgassing in central-northern upwelling waters to CO2 sequestering in southern Patagonian fjords. Journal of Geophysical reseacrh, VOL. 116, C09006, 17 PP.

Updated: 12 March 2013