Functional composition of Polychaeta group in Paita Bay and the adjacent shelf (5°S), Perú. February 2003 to October 2008

Authors

  • Williams Yupanqui Cuadros Instituto del Mar del Perú
  • Edgardo Enríquez Instituto del Mar del Perú
  • Luis Quipuzcoa Olguín Instituto del Mar del Perú
  • Robert Marquina Herrera Instituto del Mar del Perú
  • Federico Velazco Castillo Instituto del Mar del Perú
  • Carlos Paredes Instituto del Mar del Perú
  • Dimitri Gutiérrez Aguilar Instituto del Mar del Perú

Keywords:

Polychaeta, sublittoral macrofauna, trophic guilds, Paita

Abstract

The aim of this study was to determine the bathymetric and temporal variation of the functional composition of the group Polychaeta trophic guilds. Samples of macrobenthos and oceanographic information were collected in three stations located in the bay (BH, 35 m), inner shelf (PI, 65 m) and outer shelf (PE, 117 m), from February 2003 to October 2008. The results indicate that seasonal variability are subject to larger scale changes such as increased primary production in spring and summer, allowing an increase in the BH of the SDF during spring, due to the accumulation of organic matter reaching phytoplankton in the bottom. Also, the decrease of the surface depositivorous (SDF) and suspension feeders (SF) increased in summer in the bay (BH) and inner platform (IP), can be explained due to increment discharge of terrigenous particles of plant origin that physically affecting the substrate. Meanwhile, the interface consumers (IF) dominated in summer/autumn in the PE where the continental influence is less, may have been favored by the highest quality of accumulated flow
of phytodetritus in sediments and a lower content of dissolved oxygen, which perhaps decreased predation pressure and competition.

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Published

2011-12-30

How to Cite

Yupanqui Cuadros, . W., Enríquez, E., Quipuzcoa Olguín, L., Marquina Herrera, R., Velazco Castillo, F., Paredes, C., & Gutiérrez Aguilar, D. (2011). Functional composition of Polychaeta group in Paita Bay and the adjacent shelf (5°S), Perú. February 2003 to October 2008. Boletin Instituto Del Mar Del Perú, 26(1-2), 65–73. Retrieved from https://revistas.imarpe.gob.pe/index.php/boletin/article/view/114

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