Latitudinal changes of copepod egg production rates in Atlantic waters: Temperature and food availability as the main driving factors

Albert Calbet*, Susana Agusti

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Planktonic copepod abundance and egg production rates were determined in relation to temperature and chlorophyll concentration across a latitudinal transect in the Atlantic Ocean, ranging from 52°S to 24°N. Copepod distribution followed a pattern similar to that of chlorophyll a, with higher values at the southern latitudes. In contrast, egg production rates were significantly higher in the Atlantic intertropical zone, in the vicinity of the Equator. Copepod abundance was determined mainly by phytoplankton concentration, while rate processes (egg production rates) depended on chlorophyll a concentration and temperature. We propose multiple regression models including these 2 factors that explain up to 70% of the carbon specific egg production rates. The accuracy of these models versus previous ones including only temperature is also discussed.

Original languageEnglish (US)
Pages (from-to)155-162
Number of pages8
JournalMarine Ecology Progress Series
Volume181
DOIs
StatePublished - May 18 1999

Keywords

  • Atlantic Ocean
  • Chlorophyll
  • Copepod
  • Egg production
  • Temperature

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology

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