Articles | Volume 42
Adv. Geosci., 42, 83–90, 2016
Adv. Geosci., 42, 83–90, 2016

  29 Aug 2016

29 Aug 2016

Relationships between tuna catch and variable frequency oceanographic conditions

Franklin Isaac Ormaza-González et al.

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Can small pelagic fish landings be used as predictors of high-frequency oceanographic fluctuations in the 1–2 El Niño region?
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Cited articles

Ballón, M., Wosnitza-Mendo, C., Guevara-Carrasco, R., and Bertrand, A.: The impact of overfishing and El Niño on the condition factor and reproductive success of Peruvian hake, Merluccius gayi peruanus, Prog. Oceanogr., 79, 300–307, 2008.
Chavez, F. P., Ryan, J., Lluch-Cota, S. E., and ñiquen, M.: From Anchovies to Sardines and Back: Multidecadal Change in the Pacific Ocean, Science, 299, 217–221,, 2003.
Clarke, A. J.: An introduction to the dynamics of El Nino y the Southern Oscillation, Academy press, 301 pp., 2008.
D'Croz, L., Del Rosario, J. B., and Gómez, J. A.: Upwelling and phytoplankton in the Bay of Panama, Rev. Biol. Trop., 39, 233–241, 1991.
Douglass, D. H., Abrams, D. R., Baranson, D. M., and Clader, B. D.: On the Nature of the El Niño/La Niña Events, available at: (last access: 23 August 2016), 2001.
Short summary
This Paper endeavors to find or understand the relationships between tuna landings and dramatic events as El Niño in the Central Eastern Pacific and visualize the impact of long term oscillations, like the Pacific decadal Oscillation (PDO). Here for the first time tuna landing, fish efforts and the El Niño indexes (ONI and MEI) are correlated to find how the later affect the tuna fishery. Special attention has been put on tuna landings in Ecuador.