thumbnail

Species dominance and equitability: patterns in Cenozoic foraminifera of eastern North America

Journal of Foraminiferal Research

By:
and
DOI: 10.2113/gsjfr.22.1.34

Links

Abstract

Species dominance in benthonic foraminifera, represented by percent of the assemblage composed of the single most abundant species, shows little change in observed range of values from shallow into deep-marine waters in 1005 samples from the Gulf of Mexico, Atlantic, and Arctic margins of North America. This finding contrasts with the model that species dominance is highest in shallow-marine environments and decreases offshore into deeper marine waters. Equitability, the relation of all species abundances within an assemblage, also shows little change between the values found in shallow-marine assemblages and those found in assemblages from deeper water environments. Equitability and dominance values found in 421 assemblages from Palaeocene, Eocene, Miocene, and Pleistocene strata of the Atlantic and E Gulf of Mexico coastal plains are similar to the modern values. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Species dominance and equitability: patterns in Cenozoic foraminifera of eastern North America
Series title:
Journal of Foraminiferal Research
DOI:
10.2113/gsjfr.22.1.34
Volume
22
Issue:
1
Year Published:
1992
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Foraminiferal Research
First page:
34
Last page:
51
Number of Pages:
18