Dr. José Luis Iriarte Machuca

E-mail: jiriarte@uach.cl

 Biólogo Marino de la Universidad Católica del Norte, Chile.

 Máster en Ciencias con mención en Oceanografía de la Texas A&M University, Estados Unidos.

 Doctor en Oceanografía, con especialidad en Oceanografía Biológica de la Universidad de Concepción, Chile.

 Investigador principal del Centro FONDAP de Investigación “Dinámica de Ecosistemas Marinos de Altas Latitudes (Centro IDEAL).

Líneas de investigación:
 Oceanografía Biológica - Ecología Pelágica - Fitoplancton - Productividad Primaria del sistemas marinos subantárticos y Antártica.


  1. Vergara-Jara, MJ; Hopwood, MJ; Browning, TJ; Rapp, I; Torres, R; Reid, B; Achterberg, EP; Iriarte, JL. 2021. A mosaic of phytoplankton responses across Patagonia, the southeast Pacific and the southwest Atlantic to ash deposition and trace metal release from the Calbuco volcanic eruption in 2015. OCEAN SCIENCE. Publicado. 1812-0784.
  2. Torres, R; Reid, B; Frangopulos, M; Alarcon, E; Marquez, M; Haussermann, V; Forsterra, G; Pizarro, G; Iriarte, JL; Gonzalez, HE. 2020. Freshwater runoff effects on the production of biogenic silicate and chlorophyll-a in western Patagonia archipelago (50-51 degrees S). Estuarine Coastal and Shelf Science. Publicado. 0272-7714.
  3. Hopwood, MJ; Carroll, D; Dunse, T; Hodson, A; Holding, JM; Iriarte, JL; Ribeiro, S; Achterberg, EP; Cantoni, C; Carlson, DF; Chierici, M; Clarke, JS; Cozzi, S; Fransson, A; Juul-Pedersen, T; Winding, MHS; Meire, L. 2020. Review article: How does glacier discharge affect marine biogeochemistry and primary production in the Arctic?. Cryosphere. Publicado. 1994-0416.
  4. Vergara-Jara, M., DeGrandpre, M., Torres, R., Beatty, C., Cuevas, A., Alarcón, E., Iriarte, J.L. 2019. Seasonal changes in carbonate saturation state and air-sea CO2 fluxes during an annual cycle in a stratified-temperate fjord (Reloncaví Fjord, Chilean Patagonia). Journal of Geophysical research-Biogeosciences. Publicado. 2169-8953.
  5. Aguayo, R., León-Muñoz, J., Vargas-Baechler, J., Montecinos, A., Garreaud, R., Urbina, M., Soto, D., Iriarte, J.L. 2019, The glass half-empty: Climate Change drives lower freshwater input in the coastal system of the Chilean northern Patagonia. Climatic Change. Publicado. 0165-0009.
  6. Iriarte J.L., Gómez I., González H.G., Nahuelhual L., Navarro J.M. 2019. Subantarctic and Antarctic Marine Ecosystems: outlining patterns and processes in a changing ocean. Progress in Oceanography. Publicado. 0079-6611.
  7. Sanchez N., Bizsel N., Iriarte J.L., Olsen L.M., Ardelan M.V. 2019. Iron cycling in a mesocosm experiment in a north Patagonian fjord: Potential effect of ammonium addition by salmon aquaculture. Estuarine Coastal and Shelf Science. Publicado. 0272-7714.
  8. Cuevas L.A., Tapia F.J., Iriarte J.L., González H.E., Silva N., Vargas C.A. 2019. Interplay between freshwater discharge and oceanic waters modulates phytoplankton size-structure in fjords and channel systems of the Chilean Patagonia. Progress in Oceanography. Publicado. 0079-6611.
  9. Alves de-Souza, C., Iriarte, J.L., and Mardones, J.L. 2019. Interannual variability of Dinophysis acuminata and Protoceratium reticulatum in a Chilean Fjord: Insights from the realized niche analysis. Toxins. Publicado. 2072-6651.
  10. Iriarte, JL., Cuevas, LA., Cornejo, F., Silva, N., González, HE., Castro, L., Montero, P., Vargas, CA., Daneri, G. 2018. Low spring primary production and microplankton carbon biomass in Subantarctic Patagonia channels and fjords (50 – 53°S). Arctic Antarctic and Alpine. Research. Publicado. 1523-0430.
  11. Leon-Muñoz, J., Urbina, M., Garreaud, R., & Iriarte, J.L. 2018. Hydroclimatic condictions trigger record harmful algal bloom in western Patagonia (summer 2016). Scientific Reports. Publicado. 2045-2322.
  12. Sanchez, N., Brown, E. Olsen, Y. Vadstein, O. Iriarte, JL. Gonzalez, G. Ardelan, M. 2018. Effect of siderophore on iron availability in a diatom and a dinoflagellate species: contrasting response in associated bacteria. Frontiers in Marine Science. Publicado. 2296-7745.
  13. Montero, P., Daneri, G., Tapia, F., Iriarte, JL., Crawford, D. 2017. Diatom blooms and primary production in a channel ecosystem of central Patagonia. Latin American Journal of Aquatic Research. Publicado. 0718-560X.
  14. Olsen L.M., K.L. Hernandez, Mv. Ardelan, J.L. Iriarte, K.C. Bizsel, Y. Olsen. 2017. Responses in bacterial community structure to waste nutrients from aquaculture: an in situ microcosm experiment in a Chilean fjord. Aquaculture Environment Interactions. Publicado. 1869-215x.
  15. Iriarte, JL., León-Muñoz, J., Marcé, R., Clément, A. & Lara. 2017. Influence of seasonal freshwater streamflow regimes on phytoplankton blooms in a Patagonian fjord. New Zealand Journal of Marine and Freshwater Research. Publicado. 0028-8330.
  16. González, HE., M. Graeve, G. Kattner, N. Silva, L. Castro, J.L. Iriarte, L. Osmán, G. Daneri, C.A. Vargas. 2016. Carbon flow through the pelagic food web in southern Chilean Patagonia: relevance of Euphausia vallentini as a key species. Marine Ecology Progress Series. Publicado. 0171-8630.
  17. Lara, C., Saldías, G.S., Tapia, F.J., Iriarte, J.L. & Broitman, B.R. 2016. Interanual variability in temporal patterns of chlorophyll-a and their potential influence on the supply of mussel larvae to inner waters in northern Patagonia (41-44S). Journal of Marine Systems. Publicado. 0924-7963.
  18. Bailey, J., Murat, V.A., Hernández, K., González, H., Iriarte, J.L., Olsen, L.M., Salgado, H., Tiller, R. 2015. Interdisciplinarity as an Emergent Property: The Research Project “CINTERA” and the Study of Marine Eutrophication. Sustainability. Publicado. 2071-1050.
  19. Rebolledo. L., Lance, C.B., Bertrand, S., Muñoz, P., Salamanca, M., Lazo, P., Iriarte, J.L., Vargas, G., Pantoja, S., Dezileau, L. Late. 2015. Late Holocene precipitation variability recorded in the sediments of Reloncaví Fjord (41°S, 72°W), Chile. Quaternary Research. Publicado. 0033-5894.
  20. Pavés, H., González, H., Castro, L., Iriarte, J. 2015. Carbon Flows Through the Pelagic Sub-food Web in Two Basins of the Chilean Patagonian Coastal Ecosystem: the Significance of Coastal–Ocean Connection on Ecosystem Parameters. Estuaries and Coasts. Publicado. 559-2723.
  21. Labbé-Ibañez, L., Iriarte, J.L., Pantoja, S. 2015. Respuesta del microfitoplancton a la adición de nitrato y ácido silícico en fiordos de la Patagonia Chilena. Latin American Journal of Aquatic Research. Publicado. 0718-560X.
  22. Iriarte, J.L., Pantoja, S., Daneri, G. 2014. Oceanographic Processes in Chilean Fjords of Patagonia: from small to large-scale studies. Progress in Oceanography. Publicado. 0079-6611.
  23. Olsen, L., Hernández, K., Ardelan, M., Iriarte, J., Sánchez, N., González, H., Tokle, N., Olsen, Y. 2014. Responses in the microbial food web to increased rates of nutrient supply in a southern Chilean fjord: possible implications of cage aquaculture. Aquaculture Environment Interactions. Publicado. 1869-215x.
  24. Jacob, B., Tapia, F., Quiñones, R., Iriarte, J.L., Daneri, G., Sobarzo, M., Montero, P. 2014. Springtime size-fractionated primary production across hydrographic and PAR-light gradientes in Chilean Patagonia (41-50S). Progress in Oceanography. Publicado. 0079-6611.
  25. Iriarte, J.L, Ardelan, M., Cuevas, L., Gonzalez, H., Sanchez, N., Myklestad, S. 2014.Size-spectrum based differential response of phytoplankton to nutrient and iron-organic matter combinations in microcosm experiments in a Chilean Patagonian Fjord. Phycological Research. Publicado. 1322-0829.
  26. González, H., Castro, L., Daneri, G., Iriarte, J., Silva, N., Tapia, F., Teca, E., Vargas, C. 2013. Land-ocean gradient in haline stratification and its effects on plankton dynamics and trophic carbon fluxes in Chilean Patagonian fjords. Progress in Oceanography. Publicado. 0079-6611.
  27. León-Muñoz, J., R. Marcé & J. L. Iriarte. 2013. Influence of hydrological regime of an Andean river on salinity, temperature, and oxygen in a Patagonia fjord, Chile. New Zealand Journal of Marine and Freshwater Research. Publicado. 0028-8330.
  28. León-Muñoz, J., C. Echeverría, R. Marcé, W. Riss, B. Sherman, & J. L. Iriarte, 2013. The combined impact of land use change and aquaculture on sediment and water quality in oligotrophic Lake Rupanco (North Patagonia, Chile, 40.8°S). Journal of Environmental Management. Publicado. 0301-4797.
  29. Iriarte J. L., S. Pantoja, H.E. González, G. Silva, H. Pavés, P. Labbé, L. Robolledo, M.v Ardelan & V. Haussermann. 2013. Assessing the micro-phytoplankton response to nitrate in Comau Fjord (42ºS) in Patagonia (Chile), using a microcosms approach. Environmental Monitoring and Assessment. Publicado. 0167-6369.
  30. Iriarte J. L., CA. Vargas, FJ. Tapia, R. Bermúdez & RE. Urrutia. 2012. Primary production and plankton carbon biomass in a river-influenced upwelling area off Concepción, Chile. Progress in Oceanography. Publicado. 0079-6611.
  31. Alves de Souza C., D. Varela, J. L. Iriarte, H. E. González & L. Guillou. 2012. Infection dynamic(s) of Aebophryidae parasitoids on harmful dinoflagellates in a southern Chilean fjord dominated by diatoms. Aquatic Microbial Ecology. Publicado. 0948-3055.
  32. Vargas CA, Contreras PY, & Iriarte J. L. 2011. Relative importance of phototrophic, heterotrophic, and mixotrophic nanoflagellates in the microbial food web dynamic of a river-influenced coastal upwelling area. Aquatic Microbial Ecology. Publicado. 0948-3055.
  33. Pantoja S, J. L. Iriarte & G Daneri. 2011. Oceanography of the Chilean Patagonia. Continental Shelf Research. Publicado. 0278-4343.
  34. Aracena, C, CB. Lange, J. L. Iriarte, L Rebolledo & S Pantoja. 2011. Latitudinal patterns of export production recorded in surface sediments of the Chilean Patagonian fjords (41–551S) as a response to water column productivity. Continental Shelf Research. Publicado. 0278-4343.
  35. Montero P., G. Daneri, H. E. González, J. L. Iriarte, F. Tapia, L. Lizárraga, N. Sanchez, O. Pizarro. 2011. Seasonal variability of primary production in a fjord ecosystem of the Chilean Patagonia: Implications for the transfer of carbon within pelagic food webs Continental Shelf Research. Publicado. 0278-4343.
  36. Sánchez, N., González H.E., Iriarte, J.L. 2011. Trophic interactions of pelagic crustaceans in Comau Fjord (Chile): their role in food web structure. Journal of Plankton Research. Publicado. 0142-7873.
  37. González H. E., L. Castro, G. Daneri, J. L. Iriarte, N. Silva, C. Vargas, R. Giesecke, N. Sánchez. 2011. Seasonal plankton variability in Chilean Patagonia Fjords: carbon flow through the pelagic food web of the Aysen Fjord and plankton dynamics in the Moraleda Channel basin. Continental Shelf Research. Publicado. 0278-4343.
  38. Czypionka T., C. Vargas, N. Silva, G. Daneri, H. E. González, & J. L. Iriarte. 2011. Importance of mixotrophic nanoplankton in the fjord region of southern Chile. Continental Shelf Research. Publicado. 0278-4343.
  39. Iriarte J. L., H. G. González & L. Nahuelhual. 2011. Response to “Whales might also be an important component in Patagonian fjord ecosystems”. AMBIO. Publicado. 0044-7447.
  40. Rebolledo L., H. E. González, P. Muñoz, J. L. Iriarte, C. B. Lange, S. Pantoja & M. Salamanca. 2011. Siliceous productivity changes in Gulf of Ancud sediments (42° S, 72° W), southern Chile, over the last ~150 years. Continental Shelf Research. Publicado. 0278-4343

Guía de Tesis de Magíster:

  1. 2013. Labbé, P. Respuesta del microfitoplancton a la adición de nutrientes en fiordos del ecosistema marino de la Patagonia, Chile. Magíster en Ciencias mención Oceanografía. Universidad de Concepción.

Guía de Tesis de Doctorado:

  1. 2021. Vergara Maximiliano. Sea Surface Carbonate System variability in a stratified fjord (Reloncavi fjord): current and future implications in a fjord system. Doctorado en Ciencias de la Acuicultura. Universidad Austral de Chile.
  2. 2011. León, J. Rol de los ríos tributarios en los sistemas lacustre y marino costero nor-patagónicos bajo influencia antrópica. Doctorado en Ciencias Forestales. Universidad Austral de Chile.


  1. Cabo de Hornos: Plataforma para la Prospección Glaciar-Oceánica de Floraciones Algales Nocivas en la región de Magallanes y Antártica Chilena (PROFAN Magallanes). PIA AUB1900003. 2019. 2020. Investigador Principal.
  2. Centro Basal COPAS SUR-Austral. Conicyt AFB170006. 2018. 2018-2020. Co-Investigador.
  3. Annual Dynamics of Air-Sea Exchange of CO2 in Subantarctic Waters: The Role of Glacier Melting and Primary Production as Drivers of pCO2 in a Patagonian Glacial Fjord FONDECYT REGULAR N° 1170174. 2016. 2017-2020. Investigador Responsable.
  4. Centro de Investigación Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL). FONDAP 15150003. 2015. 2015-2020. Investigador Responsable.
  5. Effects of changing freshwater fluxes on Dynamics of PCO2 and phytoplankton community structure in a Patagonian Fjord under climate variability and change FONDECYT REGULAR N° 1141065. 2013. 2014-2017. Investigador Responsable.
  6. OCEAN-CERTAIN— Ocean Food-web Patrol – Climate Effects: Reducing Targeted Uncertainties with an Interactive Network EU-FP7-project number 603773. 2013. 2013-2017. Co-Investigador.
  7. Cross-disciplinary Integrated Eco-systemic Eutrophication and Research and Management Approach (CINTERA). International Collaboration Project NTNU 216607. 2012. 2012-2014. Co-Investigador.
  8. Primary production and its fate in the pelagic food web of the Reloncaví Estuary, southern Chile. Project CONA-C12F 06-10. 2012. 2012. Co-Investigador.
  9. Role of microbial food web on carbon flow during winter conditions between Boca del Guafo and Estero Elefantes. CONA-SHOA CIMAR 18. 2012. 2012-2013. Investigador Responsable.
  10. Reclutamiento de merluzas austral y de cola SUBPESCA. 2011. 2011-2012. Co-Investigador.
  11. Seguimiento de la especie de diatomea Didymosphenia geminata en los ríos Futaleufú y Espolón en la Región de Los Lagos y vigilancia de su presencia en ríos aledaños, para el Servicio Nacional de Pesca. SERNAPESCA – CIEN-UACh. 2011. 2011. Co-Investigador.
  12. Caracterización de la materia orgánica (alóctona y autóctona) y su destino en la trama trófica pelágica y el flujo vertical en el fiordo Reloncaví y Mar Interior de Chiloé. CONA-CIMAR 17. 2011. 2011-2012. Co-Investigador.
  13. The impact of solar-ultraviolet radiation (UVR) on prokaryote communities in a Patagonian fjord: the role of photoinhibition in the carbon cycle DID-UACh S -2011-38. 2011. 2011-2013. Co-Investigador.
  14. Ecological role of the Fe-Dissolved Organic Matter Interactions: Is Fe Modulating Phytoplankton Species Composition in Patagonian Fjords?FONDECYT REGULAR N° 1110614. 2010. 2011-2014. Investigador Responsable.
  15. Prospección de la presencia de la especie de diatomea Didymosphenia geminata en ríos de la cuenca del Futaleufu en la Región de Los Lagos SERNAPESCA 4728-9-LE11. 2010. 2010-2011. Co-Investigador.
  16. Estudios oceanográficos y modelo de análisis de riesgo para el manejo integrado y sustentable del fiordo Aysén (LAT. 45º 24´S, LONG. 72º 59´W), XI región INNOVA-CORFO 08CBA-2064. 2009. 2009-2011. Co-Investigador.
  17. Modelling the effects of deforestation and land use change on streamflow and nutrient loads in lake watersheds in southern Chile FONDECYT REGULAR N° 1080408. 2007. 2008-2011. Co-Investigador.
  18. The role of silicic acid on phytoplankton blooms in the Chilean fjord system: impact of past and future diminished freshwater streamflow scenario on marine productivity. FONDECYT REGULAR N° 1080187. 2007. 2008-2011. Investigador Responsable.
  19. Oceanographic applications for the sustainable economic development of the southern region of Chile Programa de Financiamiento Basal de CONICYT para Centros Científicos y de Excelencia Código PFB-31/2007. 2007. 2008-2013. Co-Investigador.

Listado de Consultorías, asistencias técnicas o asesorías:

  1. Can waste emission from fish farms change the structure of marine food webs? A comparative study of coastal ecosystems in Norway and Chile (WAFOW). NFR project number 163661, funded by in the first call from the Research Program on Latin America. 2009 2009-2012. Co-Investigador.