Le zooplancton du lagon de clipperton

Abstract

The Clipperton atoll (10°18'N, 109°13'W) is closed and holds a lagoon with marked stratification; surface waters are brackish (S=4/6%), but deep waters show a salinity close to that of seawater and high concentrations of H2S; temperature and pH are high. In this paper, environmental data concerning the atoll, the lagoon and the surrounding ocean are recalled and are followed by the study of the zooplankton of the lagoon and ocean.