Summer microphytoplankton characteristics during the pelagic resources cruise 0702-04

Authors

  • Flor Chang Instituto del Mar del Perú
  • Avy Bernales Instituto del Mar del Perú
  • Sonia Sánchez Instituto del Mar del Perú

Keywords:

Phytoplankton, Composition, Biologicals indicators, Summer 2007

Abstract

A total of 114 samples were collected using phytoplankton net (75 μm). The plankton volumes fluctuated between 0.02 and 3.78 mL.m-3 and resulted in a general average of 0.43 mL.m-3. The greatest concentrations ranged between 4 and 5°S. The microphytoplankton was composed by central diatoms belonging to the intermediate phases succession and upwelling species (Coscinodiscus perforatus, Actinocyclus sp., Thalassiosira subtilis, Detonula pumila y Chaetoceros debilis), associated with cosmopolitan dinoflagellates. Red tides produced by Akashiwo sanguinea (Huacho) and ciliate Mesodinium rubrum (Pisco) were registered. Ceratium praelongum, Surface Subtropical Waters (SSW) indicator, and C. breve, Surface Equatorial Waters (SEW) indicator, were found off Pimentel and Huarmey, mainly out of 60 nm, with a maximum approach to coast by C. praelongum off Atico. Protoperidinium obtusum, Cold Coastal Waters (CCW) indicator, was found within the coastal area, except in Malabrigo, Callao and Pisco where its distribution reached 60 nm.

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Published

2019-06-03

How to Cite

Chang, F., Bernales, A., & Sánchez, S. (2019). Summer microphytoplankton characteristics during the pelagic resources cruise 0702-04. Boletin Instituto Del Mar Del Perú, 34(1), 15–24. Retrieved from https://revistas.imarpe.gob.pe/index.php/boletin/article/view/5

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