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Titolo:
Molluscan assemblages on coral reefs and associated hard substrata in the northern Red Sea
Autore:
Zuschin, M; Hohenegger, J; Steininger, FF;
Indirizzi:
Univ Vienna, Inst Palaontol, A-1090 Vienna, Austria Univ Vienna Vienna Austria A-1090 Inst Palaontol, A-1090 Vienna, Austria Forschungsinst & Nat Museum Senckenberg, D-60325 Frankfurt, Germany Forschungsinst & Nat Museum Senckenberg Frankfurt Germany D-60325 ermany
Titolo Testata:
CORAL REEFS
fascicolo: 2, volume: 20, anno: 2001,
pagine: 107 - 116
SICI:
0722-4028(200109)20:2<107:MAOCRA>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
GASTROPOD ASSEMBLAGES; DISTRIBUTION PATTERNS; LONG-TERM; SAFAGA; EGYPT; BAY; ABUNDANCE; COMMUNITIES; DIVERSITY; DRUPELLA;
Keywords:
mollusca; ecology; substrate gradient; coral reef; recent; Red Sea;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
71
Recensione:
Indirizzi per estratti:
Indirizzo: Zuschin, M Univ Vienna, Inst Palaontol, Althanstr 14, A-1090 Vienna, Austria Univ Vienna Althanstr 14 Vienna Austria A-1090 Vienna, Austria
Citazione:
M. Zuschin et al., "Molluscan assemblages on coral reefs and associated hard substrata in the northern Red Sea", CORAL REEF, 20(2), 2001, pp. 107-116

Abstract

Information on spatial variability and distribution patterns of organisms in coral reef environments is necessary to evaluate the increasing anthropogenic disturbance of marine environments (Richmond 1993; Wilkinson 1993; Dayton 1994). Therefore different types of subtidal, reef-associated hard substrata (reef flats, reef slopes, coral carpets, coral patches, rock grounds), each with different coral associations, were investigated to determine the distribution pattern of molluscs and their life habits (feeding strategies and substrate relations). The molluscs were strongly dominated by taxa with distinct relations to corals, and five assemblages were differentiated. The Dendropoma maxima assemblage on reef fiats is a discrete entity, strongly dominated by this encrusting and suspension-feeding gastropod. All other assemblages are arranged along a substrate gradient of changing coral associations and potential molluscan habitats. The Coralliophila neritoidea Barbatia foliata assemblage depends on the presence of Porites and shows a dominance of gastropods feeding on corals and of bivalves associated with living corals. The Chamoidea-Cerithium spp. assemblage on rock grounds is strongly dominated by encrusting bivalves. The Drupella cormus-Pteriidae assemblage occurs on Millepora-Acropora reef slopes and is strongly dominated by bivalves associated with living corals. The Barbatia setigera-Ctenoides annulata assemblage includes a broad variety of taxa, molluscan life habits and bottom types, but occurs mainly on faviid carpets and is transitional among the other three assemblages. A predicted degradation of coral coverage to rock bottoms due to increasing eutrophication and physical damage in the study area (Riegl and Piller 2000) will result in a loss of coral-associated molluscs in favor of bivalve crevice dwellers in dead coral heads and of encrusters on dead hard substrata.

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Documento generato il 21/09/20 alle ore 12:54:45