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VOLVER A TABLA DE CONTENIDOS Volumen 51

NÚMERO 2

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Influencia de El Niño Oscilación del Sur en la disponibilidad y abundancia de recursos hidrobiológicos de la pesca artesanal en Ica, Perú

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Composición química proximal y perfil de ácidos grasos del mejillón Mytilus edulis provenientes de cultivos y bancos naturales en el Golfo San Jorge, Argentina

Seasonal dynamics of zooplankton in a northern Chile bay exposed to upwelling conditions

Autores

CORRESPONSAL

Álvaro T. Palma

apalma@fisioaqua.cl

1

1

Fisioaqua, Avenida Vitacura 2909, oficina 717, Las Condes, Santiago, Chile

6

6

Universidad Gabriela Mistral, Ricardo Lyon 1177, Providencia, Santiago, Chile

7

7

Programa CAPES, Pontificia Universidad Católica de Chile, Av. Libertador Bernardo O’Higgins 340, Santiago, Chile

M. Loreto Torreblanca

1

1

Fisioaqua, Avenida Vitacura 2909, oficina 717, Las Condes, Santiago, Chile

Iván Pérez-Santos

1

1

Fisioaqua, Avenida Vitacura 2909, oficina 717, Las Condes, Santiago, Chile

2

2

Centro i~mar, Universidad de Los Lagos, camino a Chinquihue km 6, Puerto Montt, Chile

3

3

Programa COPAS Sur-Austral, Universidad de Concepción, Campus Concepción, Victor Lamas 1290, Concepción, Chile

Bruno San Martín

1

1

Fisioaqua, Avenida Vitacura 2909, oficina 717, Las Condes, Santiago, Chile

Eduardo Varas

1

1

Fisioaqua, Avenida Vitacura 2909, oficina 717, Las Condes, Santiago, Chile

Rodrigo Zilleruelo

1

1

Fisioaqua, Avenida Vitacura 2909, oficina 717, Las Condes, Santiago, Chile

Ramiro Riquelme-Bugueño

1

1

Fisioaqua, Avenida Vitacura 2909, oficina 717, Las Condes, Santiago, Chile

4

4

Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, Concepción, Chile

5

5

Instituto Milenio de Oceanografía, Universidad de Concepción, Concepción, Chile

Resumen

Due to the ever-increasing use of the coastline for industrial purposes, particularly by those activities that take up great amounts of sea water, it is fundamental to understand the composition of the planktonic fauna and its natural spatial and temporal variability in relation to hydrographic variables, in order to understand the potential impact of such undertakings. Totoralillo Norte (~30°S) is an embayment located within a well-known area of recurring upwelling events, as well as a zone with projection for industrial development. Here we performed seasonal surveys (several days sampling within each season) during 2013 and 2014 recognizing an abundant zooplanktonic community with a good representation of the main taxa comprised by at least 166 species. In terms of numbers, copepods dominated the holoplankton (91.7%), whereas meroplankton was mainly composed of larval stages of barnacles, mollusks, decapods, bryozoans and fish. In spite this being a coastal zone normally affected by upwelling events, zooplankton abundance was high throughout the year, even during periods dominated by weak winds and downwelling conditions. Studies such as this can help unveil relevant ecological patterns and their related processes; vital information that must be considered during an environmental impact assessments.

Palabras clave

Bay, upwelling, holoplankton, meroplankton, zooplankton diversity

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