Bathyal ostracodes from the Florida-Hatteras slope, the Straits of Florida, and the Blake Plateau

doi:10.1016/0377-8398(83)90007-5

Marine Micropaleontology

Volume 8, Issue 2, September 1983, Pages 89-119

https://doi.org/10.1016/0377-8398(83)90007-5 Get rights and content

Abstract

Epibathyal ostracodes from the Florida-Hatteras slope, the Blake Plateau and the Straits of Florida were studied to determine the relationship of numerous genera and species to bottom-water environmental conditions such as dissolved oxygen and bottom-water temperatures. From a total of 100 samples, 44 samples evenly distributed between 200 and 1100 m water depth and having an average of 325 specimens were examined in detail.

Using occurrence data from the adjacent continental shelf, carapace preservation, Rose Bengal staining and population data, indigenous death assemblages were distinguished from transported or reworked fossil specimens. The percent of transported specimens varied as follows: Blake Plateau < 1%; Straits of Florida 10–60%; Florida-Hatteras slope 1–15%. Indigenous death assemblages contained between 10 and 61 species per sample, averaging 33.3 species.Krithe, Argilloecia andPseudocythere occur in > 90% of the samples and usually constitute 10 to 30% of each.Trachyleberidea, Bairdoppilata, Saida, Paranesidea, Ambocythere, Bythocypris, Cytherella, Bradleya, Henryhowella, and Polycopidae occur in 45 to 80% of the samples in varying percentages.

The upper depth limits of 39 taxa occur at or just below the thermocline suggesting a relationship to temperature.Australoecia, Quasibuntonia, Cytheropteron, Ruggieriella, Saida, Ambocythere, Trachyleberidea, Macrocypris, Krithe, “Thalassocythere”, andCytherella are most common or restricted to the O₂ minimum zone. Conversely,Anchistrocheles, Bradleya, Henryhowella, andRockallia are most common below 750 m in well oxygenated water with temperatures below 8°C.

The results show that: (1) ostracodes display a narrow depth zonation controlled by dissolved oxygen and water temperature; (2) species diversity is very high for a bathyal zone; (3) ostracodes can be used to identify the source of sediment that has been transported downslope; and (4) some taxa are useful in recognizing low oxygenated water in Cenozoic deposits.

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Bathyal ostracodes from the Florida-Hatteras slope, the Straits of Florida, and the Blake Plateau

Abstract

Preliminary report on the study of abyssal ostracodes

TheBradleya problem, with descriptions of two new psychrospheric ostracode genera,Agrenocythere andPoseidonamicus (Ostracoda: Crustacea)

Smithson. Contrib. Paleobiol.

In search of lost oceans: a paradox in discovery

Form, function, and architecture of ostracode shells

Ann. Rev. Earth Planet. Sci.

Estimating greater paleodepths with ostracodes, especially in past thermospheric oceans

Palaeogeograph., Palaeoclimatol., Palaeoecol.

Arthropoda, article 2, recent marine ostracodes from the eastern Gulf of Mexico

Univ. Kans. Paleontol. Contrib.

Deep-sea ostracodes and the transformation of ocean to sea in the Tethys

Distribution of marine podocopid Ostracoda in the Gulf of Mexico and the Caribbean

The Distribution of Ostracodes in the Bottom Sediments of the Adriatic Sea

The distribution pattern of minimum oxygen concentrations in the Atlantic

Oceanology

Species diversity: benthonic foraminifera in western North Atlantic

Science

La ostracofauna Plio-Pleistocenica della sezione vrica in Carabria (con considerazioni sul limite Neogene/Quaternario)

Estratto Dal Bollettino Della Societa Paleontologica Italiana

Late Pleistocene marginal marine ostracodes from the southeastern Atlantic coastal plain and their paleoenvironmental implications

Geographie Physique et Quaternaire

Sedimentation on the eastern United States continental slope

Atlantic continental shelf and slope of the United States: Geologic background

U.S. Geol. Surv. Prof. Pap.

Zoogeography of holocene Cytheracean ostracodes in the bays of Texas

J. Paleontol.

Data File, Continental Margin Program, Atlantic Coast of the United States

Regional clay mineral facies in estuaries and continental margin of the United States east coast

Geol. Soc. Am. Mem.

Atlantic continental shelf and slope of the United States — ostracode zoogeography in the southern Nova Scotian and northern Virginian faunal provinces

U.S. Geol. Surv. Prof. Pap.

Ostracode biofacies in the Cape Hatteras, North Carolina, area

Bull. Am. Paleont.