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Modern benthic ostracodes from Lu??tzow-Holm Bay, East Antarctica: Paleoceanographic, paleobiogeographic, and evolutionary significance

Micropaleontology

By:
, , ,
DOI: 10.2113/gsmicropal.53.6.469

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Abstract

Seventy-three ostracode species from 38 genera were recovered from the 55 surface sediment samples in Lu??tzow-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 Lu??tzow-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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Modern benthic ostracodes from Lu??tzow-Holm Bay, East Antarctica: Paleoceanographic, paleobiogeographic, and evolutionary significance
Series title:
Micropaleontology
DOI:
10.2113/gsmicropal.53.6.469
Volume
53
Issue:
6
Year Published:
2007
Language:
English
Publisher:
GeoScienceWorld
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Micropaleontology
First page:
469
Last page:
496
Number of Pages:
28