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Chrysophyte reproduction and resting cysts: A paleolimnologist's primer

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Chrysophyte algae produce siliceous resting cysts (stomatocysts) that are becoming an increasingly useful class of paleoecological indicator microfossils. This paper provides a review of the role that stomatocysts play in the life cycle and reproductive ecology of freshwater planktonic chrysophytes. Such information provides paleolimnologists with greater insight into the ecology of the vegetative, planktonic growth phase of species contributing stomatocysts to lacustrine microfossil assemblages. Specific chrysophyte reproductive characteristics discussed include: temporal dynamics of vegetative growth and encystment, cyst induction, cyst survivorship, germination requirements and recruitment strategies. This information serves as an introduction to a special issue of the Journal of Paleolimnology which is dedicated to the ‘Application of Chrysophyte Stomatocysts in Paleolimnology’.

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This is the first in a series of four papers published in this dedicated issue entitled ‘Application of Chrysophyte Stomatocysts in Paleolimnology’. Dr. C. D. Sandgren served as guest editor for these papers.

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Sandgren, C.D. Chrysophyte reproduction and resting cysts: A paleolimnologist's primer. J Paleolimnol 5, 1–9 (1991). https://doi.org/10.1007/BF00226555

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Key words

  • Chrysophyceae
  • stomatocyst
  • statospore
  • cyst
  • reproduction
  • sex
  • ecology
  • paleolimnology