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Modern benthic ostracodes from Luetzow-Holm Bay, East Antarctica; paleoceanographic, paleobiogeographic, and evolutionary significance

Moriaki Yasuhara, Masako Kato, Noriyuki Ikeya and Koji Seto
Modern benthic ostracodes from Luetzow-Holm Bay, East Antarctica; paleoceanographic, paleobiogeographic, and evolutionary significance
Micropaleontology (2007) 53 (6): 469-496

Abstract

Seventy-three ostracode species from 38 genera were recovered from the 55 surface sediment samples in Lutzow-Holm Bay, northeastern Antarctica. We investigated bathymetric and geographic distributions of modern benthic ostracode species in the bay and compared this fauna with published modern and fossil ostracode data of Antarctic and southern South American regions. The results show: (1) Four biotopes and three sub-biotopes are recognized based on Q-mode cluster analysis, which suggest distributions of modern ostracodes are mainly controlled by water-mass structure, ice scouring, and light availability. (2) Comparison between the Lutzow-Holm Bay fauna and other ostracode faunas from Antarctica and southern South America shows high endemism and homogeneity of Antarctic ostracode fauna, suggesting in situ evolution of most extant Antarctic species. (3) Most species are endemic to the Antarctica, a few species also inhabit South American waters.


ISSN: 0026-2803
Coden: MCPLAI
Serial Title: Micropaleontology
Serial Volume: 53
Serial Issue: 6
Title: Modern benthic ostracodes from Luetzow-Holm Bay, East Antarctica; paleoceanographic, paleobiogeographic, and evolutionary significance
Affiliation: U. S. Geological Survey, Reston, VA, United States
Pages: 469-496
Published: 2007
Text Language: English
Publisher: American Museum of Natural History, New York, NY, United States
References: 107
Accession Number: 2008-109954
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes 4 appendices
Illustration Description: illus. incl. 5 plates, 2 tables, sketch maps
S70°00'00" - S70°00'00", E39°00'00" - E40°00'00"
Secondary Affiliation: Shizuoka University, JPN, JapanShimane University, JPN, Japan
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 200840
Program Name: USGSOPNon-USGS publications with USGS authors
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