Islandinium brevispinosum sp. nov. (Dinoflagellata), a new organic-walled dinoflagellate cyst from modern estuarine sediments of New England (USA)

Vera Pospelova, Martin J. Head

Research output: Contribution to journalArticlepeer-review

Abstract

Modern estuarine environments remain underexplored for dinoflagellate cysts, despite a rapidly increasing knowledge of cyst distributions in open marine sediments. A study of modern estuarine sediments in New England has revealed the presence of Islandinium brevispinosum sp. nov., a new organic-walled dinoflagellate cyst that is locally common and probably of heterotrophic affinity. Resistance of this cyst to standard palynological processing indicates its geological preservability, although fossils are not yet known. Previously assigned species of the genus Islandinium are characteristic of polar and subpolar environments today and cold paleoenvironments in the Quaternary. The present record of I. brevispinosum extends the ecological and geographical range of this genus into the warm temperate zone, where I. brevispinosum occupies specific environments with reduced salinities and elevated nutrient levels.

Original languageEnglish (US)
Pages (from-to)593-601
Number of pages9
JournalJournal of Phycology
Volume38
Issue number3
DOIs
StatePublished - Jan 1 2002
Externally publishedYes

Keywords

  • Atlantic Ocean
  • Estuaries
  • Islandinium brevispinosum
  • Massachusetts
  • Modern sediments
  • Nutrients
  • Organic-walled dinoflagellate cysts
  • Rhode Island
  • Salinity
  • USA

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