Does coordinated stasis yield taxonomic and ecologic stability? Middle Devonian Hamilton Group of central New York

Nicole Bonuso, Cathryn R. Newton, James C. Brower, Linda C. Ivany

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Statistical tests of coordinated stasis within the Middle Devonian Hamilton Group demonstrate significant temporal changes in taxonomic composition and ecological structure of the macrofauna throughout a 5-6 m.y. time span. The analysis, based upon a collection of >38,000 specimens obtained over a 20 yr period from the Hamilton Group of central New York, used highly controlled sampling techniques, applied within a single, well-defined lithofacies. Assemblages were tested for stability through time, as would be predicted by the model of coordinated stasis. Our results reveal that within at least one major Hamilton environment, taxonomic and ecological stability are not statistically significant and therefore do not support the hypothesis of coordinated stasis.

Original languageEnglish (US)
Pages (from-to)1055-1058
Number of pages4
JournalGeology
Volume30
Issue number12
DOIs
StatePublished - Dec 1 2002

Keywords

  • Coordinated stasis
  • Hamilton Group
  • Middle Devonian
  • Paleoecology
  • Statistics

ASJC Scopus subject areas

  • Geology

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