Relationships between anchovy and environment at different temporal scales

Authors

  • Sara Purca Cuicapusa Instituto del Mar del Perú
  • Michelle Graco Instituto del Mar del Perú
  • Dimitri Gutiérrez Aguilar Instituto del Mar del Perú
  • Boris Dewitte Instituto del Mar del Perú
  • Jorge Tam Málaga Instituto del Mar del Perú
  • Arnaud Bertrand Instituto del Mar del Perú
  • Francisco Chavez Instituto del Mar del Perú
  • Roberto Flores Palomares Instituto del Mar del Perú
  • Jesús Ledesma Rivera Instituto del Mar del Perú
  • Monique Messie Instituto del Mar del Perú
  • Katherine Goubanova Instituto del Mar del Perú
  • Octavio Morón Antonio Instituto del Mar del Perú
  • Carmela Nakazaki Instituto del Mar del Perú
  • Salvador Peraltilla Neyra Instituto del Mar del Perú
  • Sonia Sánchez Ramírez Instituto del Mar del Perú

Keywords:

Decadal variability, Anchoveta, Sardine, Peruvian upwelling ecosystem

Abstract

The relationship between the environment and the Peruvian anchovy (Engraulis ringens) was studied in the Peruvian Upwelling Ecosystem (PUE). It is hypothesized that in the upwelling zone between 5°S and 13°S there is a negative relationship between temperature, oxygen concentration and landings of anchoveta at decadal timescales. In monthly time series observed between 1950 – 2008, the sea surface temperature, subsurface temperature, oxygen, chlorophyll-a, anchoveta and sardine landings were analyzed applying statistical and spectral methods to obtain decadal temporal modes and characterize the low frequency modulation of their seasonal cycles. In addition, reanalysis data were used to characterize the seasonal changes from the environmental forcing (remote and local) of PUE. Strong associations at decadal scales between coastal environmental and anchoveta landings time series were found, and it is suggested that environmental covariability at seasonal, intraseasonal, interannual, decadal and secular time scales in PUE will increase during the next decade.

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Published

2010-12-31

How to Cite

Purca Cuicapusa, S., Graco, . M., Gutiérrez Aguilar, D., Dewitte, B., Tam Málaga, J., Bertrand, A., Chavez, F., Flores Palomares, R., Ledesma Rivera, J., Messie, M., Goubanova, K., Morón Antonio, O., Nakazaki, C., Peraltilla Neyra, S., & Sánchez Ramírez, S. (2010). Relationships between anchovy and environment at different temporal scales. Boletin Instituto Del Mar Del Perú, 25(1-2), 13–21. Retrieved from https://revistas.imarpe.gob.pe/index.php/boletin/article/view/134

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