Nutrient regeneration by zooplankton during a red tide off Peru, with notes on biomass and species composition of zooplankton

Sharon L Smith

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

During March and April 1976, a red tide, dominated by the dinoflagellate Gymnodinium splendens Lebour, developed in the vicinity of 15°06'S and 75°31'W off Peru. At the height of the bloom, the euphotic zone was 6 m deep and the chlorophyll a at the surface was 48 μg l-1. A daily collection of zooplankton at 09.00 hrs showed large fluctuations of biomass, from 0.2 to 3.84 g dry weight m-2 in a water column of 120m. Copepodids and nauplii dominated the collections. During a period of reduced wind, the adult copepods were a mixture of the species characteristic of the coastal upwelling system and the neritic species associated with more northerly, tropical waters. Nitrogen regeneration by the zooplankton varied with the development of the bloom, the type of zooplankton dominating the experiment, and biomass fluctuations, but never accounted for more than 25% of the nitrogen uptake by phytoplankton.

Original languageEnglish
Pages (from-to)125-132
Number of pages8
JournalMarine Biology
Volume49
Issue number2
DOIs
StatePublished - Jun 1 1978
Externally publishedYes

Fingerprint

red tide
algal blooms
Peru
zooplankton
regeneration
species diversity
nutrient
biomass
algal bloom
nutrients
Gymnodinium
nitrogen
euphotic zone
nauplii
dinoflagellate
chlorophyll a
upwelling
Copepoda
water column
phytoplankton

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Nutrient regeneration by zooplankton during a red tide off Peru, with notes on biomass and species composition of zooplankton. / Smith, Sharon L.

In: Marine Biology, Vol. 49, No. 2, 01.06.1978, p. 125-132.

Research output: Contribution to journalArticle

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