Nutrient and temperature constraints on primary production and net phytoplankton growth in a tropical ecosystem

Daffne C. López-Sandoval, Carlos M. Duarte, Susana Agusti

Research output: Contribution to journalArticlepeer-review

Abstract

The Red Sea depicts a north–south gradient of positively correlated temperature and nutrient concentration. Despite its overall oligotrophic characteristics, primary production rates in the Red Sea vary considerably. In this study, based on five cruises and a 2-year time series (2016–2018) sampling in the Central Red Sea, we determined phytoplankton photosynthetic rates (PP) by using 13C as a tracer and derived phytoplankton net growth rates (μ) and chlorophyll a (Chl a)-normalized photosynthesis (PB). Our results indicate a ninefold variation (14–125 mgC m−2 h−1) in depth-integrated primary production and reveal a marked seasonality in PP, PB, and μ. Depth-integrated PP remained
Original languageEnglish (US)
JournalLimnology and Oceanography
DOIs
StatePublished - Jun 12 2021

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science

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