| Reference Type | Journal (article/letter/editorial) |
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| Title | Benthic invertebrates of a modern carbonate ramp: a preliminary survey |
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| Journal | Journal of Paleontology |
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| Authors | Ivany, Linda C. | Author |
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| Newton, Cathryn R. | Author |
| Mullins, Henry T. | Author |
| Year | 1994 (May) | Volume | 68 |
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| Issue | 3 |
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| Publisher | Cambridge University Press (CUP) |
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| DOI | doi:10.1017/s0022336000025828Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 416264 | Long-form Identifier | mindat:1:5:416264:7 |
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| GUID | 0 |
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| Full Reference | Ivany, Linda C., Newton, Cathryn R., Mullins, Henry T. (1994) Benthic invertebrates of a modern carbonate ramp: a preliminary survey. Journal of Paleontology, 68 (3) 417-433 doi:10.1017/s0022336000025828 |
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| Plain Text | Ivany, Linda C., Newton, Cathryn R., Mullins, Henry T. (1994) Benthic invertebrates of a modern carbonate ramp: a preliminary survey. Journal of Paleontology, 68 (3) 417-433 doi:10.1017/s0022336000025828 |
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| In | (1994, May) Journal of Paleontology Vol. 68 (3) Cambridge University Press (CUP) |
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| Abstract/Notes | A preliminary survey of benthic invertebrates off central west Florida provides documentation of modern epifaunal communities on a low-gradient carbonate slope. Three large-scale biofacies occur in soft-sediment carbonate environments between 200 and 2,000 m: an Echinoderm biofacies (200–550 m) dominated by a diverse assemblage of echinoderms, gastropods, and decapod crustaceans; a Penaeid shrimp–conical mound biofacies (550–1,200 m) characterized by large bioturbation structures; and a Microbial mat biofacies (1,200–2,000 m) with only rare epifaunal invertebrates. A fourth, hard-substrate biofacies reflects the presence of localized Miocene and Pleistocene hardgrounds in water depths of 200–600 m. This illustrates that hard-substrate biofacies may be laterally correlative with soft-sediment biofacies in a slope setting, thus producing a mosaic of contrasting faunal associations. All four biofacies have low population densities, presumably as a consequence of relatively low surface productivity. All four biofacies also show biogeographic affinity with other faunas at intermediate depths in the Caribbean region. Depth-related faunal transitions on the west Florida slope correlate with substrate and current velocity. Decreasing species diversity and abundance and a biofacies transition from suspension-feeding to deposit-feeding assemblages correlate with increasing depth, a decrease in mean grain size, and an increase in organic content of the sediment. This biofacies model may provide a modern analogue for faunas of ancient low-gradient slopes such as those of Cretaceous “shelf-sea” chalks of northwestern Europe. |
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