Thirty-two surface sediment samples from the Southern Ocean (eastern Atlantic sector),
between the Subtropical Front and the Weddell Gyre, were investigated to provide
information on the distribution of modern organic-walled dinoflagellate cysts in relation to the
oceanic fronts of the Antarctic Circumpolar Current (ACC). A clearly distinguishable
distribution pattern was observed in relation to the water masses and fronts of the ACC. The
dinoflagellate cysts of species characteristic of open oceanic environments, such as …

Little is known about the marine palynology of the neotropical oceans. Here, we present the
first comprehensive study of organic-walled dinoflagellate cyst assemblages in 52 surface
marine sediment samples from the southern Caribbean (SC) and the eastern tropical Pacific
(ETP) and explain how these assemblages relate to sea-surface parameters. Multivariate
analyses show that of the several environmental parameters considered, sea-surface
salinity (SSS), phosphate concentrations, and nitrate concentrations best explain the relative …