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Titolo:
Modern shallow- to deep-water bivalve death assemblages in the Red Sea - ecology and biogeography
Autore:
Grill, B; Zuschin, M;
Indirizzi:
Univ Vienna, Inst Paleontol, A-1090 Vienna, Austria Univ Vienna Vienna Austria A-1090 Inst Paleontol, A-1090 Vienna, Austria Univ Wurzburg, Inst Paleontol, D-97070 Wurzburg, Germany Univ Wurzburg Wurzburg Germany D-97070 eontol, D-97070 Wurzburg, Germany
Titolo Testata:
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
fascicolo: 1-2, volume: 168, anno: 2001,
pagine: 75 - 96
SICI:
0031-0182(20010401)168:1-2<75:MSTDBD>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEVEL FLUCTUATIONS; SPECIES RICHNESS; NORTHERN BAY; CORAL REEFS; DIVERSITY; MOLLUSKS; ATLANTIC; OCEAN; PRESERVATION; MORPHOLOGY;
Keywords:
Red Sea; mollusca; palaeobiogeography; ecology; Pleistocene; recent;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
92
Recensione:
Indirizzi per estratti:
Indirizzo: Zuschin, M Univ Vienna, Inst Paleontol, Althanstr 14, A-1090 Vienna, Austria Univ Vienna Althanstr 14 Vienna Austria A-1090 Vienna, Austria
Citazione:
B. Grill e M. Zuschin, "Modern shallow- to deep-water bivalve death assemblages in the Red Sea - ecology and biogeography", PALAEOGEO P, 168(1-2), 2001, pp. 75-96

Abstract

This study provides quantitative comparisons of modern bivalve death assemblages between shallow marine. deep shelf and bathyal settings. Cluster- and discriminant analyses of the bivalve fauna distinguish four sample groupswhich are primarily separated by water depth (shallow marine vs, deeper shelf vs. bathyal) and sedimentological features (fine-grained shallow marinevs. coarse-grained shallow marine). The four groups consist of taxonomically and/or ecologically distinct faunal associations. Association 1 from fine-grained shallow marine environments (6-40 m) is characterized by the infaunal chemoau- totrophic Lucinoidea and suspension-feeding Corbulidae and Veneroidea. Association 2 from coarse-grained shallow marine environments (1-19 m) is dominated by the infaunal suspension-feeding Cardioidea, Glycymerididae and deposit-feeding Tellinoidea, but the importance of epifaunal (cemented and byssate) suspension-feeding Ostreoidea, Chamoidea. Arcoidea, Spondylidae and Mytiloidea increases. Association 3 from deeper shelf (mainly 50-100 m) is strongly characterized by suspension-feeding epifauna (diverse Pteriomorpha - mainly Limopsidae. Spondylidae and Mytiloidea). and association 3 from bathyal settings (mainly 300- 1900 m) consists mainly of infaunal carnivorous Cuspidariidae, suspension-freeing Limopsidae and deposit-feeding Nuculanidae. The two shallow-water associations and the association from the deep shelf show considerable overlaps in taxonomic composition. They also show a south to north alteration in their faunal composition, which probably reflects their common post-Pleistocene immigration from refuge areasin the Gulf of Aden or Gulf of Oman. The bathyal fauna, in contrast, is very distinct and homogeneous in all investigated respects throughout the RedSea basin. The dominance of endemic faunas. the presence of bivalves with clearly Tethyan origin and significant differences to deep-sea faunas from the Mediterranean basin and the Gulf of Aden indicate that in some deep-water parts of the Red Sea, Pliocene faunas have survived during the Pleistocene. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 11/07/20 alle ore 13:36:27