Phytoplankton nycthemeral behavior off Callao (12°S), Perú

Authors

  • Avy Bernales Jiménez Instituto del Mar del Perú
  • Flor Chang Instituto del Mar del Perú
  • Sonia Sánchez Ramírez Instituto del Mar del Perú
  • Jesús Ledesma Rivera Instituto del Mar del Perú
  • Nelly Jacobo Instituto del Mar del Perú
  • Jorge Quispe Sánchez Instituto del Mar del Perú
  • Víctor Aramayo Navarro Instituto del Mar del Perú

Keywords:

Asterionellopsis glacialis, Akashiwo sanguinea, phytoplankton, Oxygen Minimum Zone, nycthemeral behavior

Abstract

Between April 18th to 21th of 2006, nycthemeral behavior changes in phytoplankton were studied at two stations off the central coast of Peru (12°S). Water samples were collected every 6 hours to a depth of 75 m. Phytoplankton composition and abundance were determined in relation to dissolved oxygen. Differences in the nycthemeral fluctuations are discussed, focusing mainly in the vertical distribution of the diatom Asterionellopsis glacialis, the dinoflagellate Akashiwo sanguinea, and phytoflagellates at the closest coastal station. The first two species reached 25 m in depth during the night; whereas the phytoflagellates showed highest abundances in the Oxygen Minimum Zone at both day and night times in the station located at 30 nm.

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Published

2011-12-30

How to Cite

Bernales Jiménez, A., Chang, F., Sánchez Ramírez, S., Ledesma Rivera, J., Jacobo, N., Quispe Sánchez, J., & Aramayo Navarro, V. (2011). Phytoplankton nycthemeral behavior off Callao (12°S), Perú. Boletin Instituto Del Mar Del Perú, 26(1-2), 33–38. Retrieved from https://revistas.imarpe.gob.pe/index.php/boletin/article/view/118

Issue

Vol. 26 No. 1-2 (2011): Journal Instituto del Mar del Perú

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Artículos originales

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