Species dominance and equitability: patterns in Cenozoic foraminifera of eastern North America
Journal of Foraminiferal Research
By: T. G. Gibson and E.E. Hill
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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
Suggested Citation
Gibson, T., and Hill, E., 1992, Species dominance and equitability: patterns in Cenozoic foraminifera of eastern North America: Journal of Foraminiferal Research, v. 22, no. 1, p. 34-51, https://doi.org/10.2113/gsjfr.22.1.34.
| 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 |