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Titolo:
Effects of physical and biological disturbances on algal turfs in Kaneohe Bay, Hawaii
Autore:
Cheroske, AG; Williams, SL; Carpenter, RC;
Indirizzi:
San Diego State Univ, Dept Biol, San Diego, CA 92182 USA San Diego State Univ San Diego CA USA 92182 Biol, San Diego, CA 92182 USA Calif State Univ Northridge, Dept Biol, Northridge, CA 91330 USA Calif State Univ Northridge Northridge CA USA 91330 thridge, CA 91330 USA
Titolo Testata:
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
fascicolo: 1, volume: 248, anno: 2000,
pagine: 1 - 34
SICI:
0022-0981(20000518)248:1<1:EOPABD>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
CARIBBEAN CORAL-REEF; FUNCTIONAL-GROUP APPROACH; DIADEMA-ANTILLARUM PHILIPPI; STATES VIRGIN-ISLANDS; GREAT-BARRIER-REEF; COMMUNITY STRUCTURE; MASS MORTALITY; PRIMARY PRODUCTIVITY; HERBIVOROUS FISHES; GRAZING INTENSITY;
Keywords:
algal turfs; coral reef; disturbance; Hawaii; herbivores; hydrodynamics; macroalgae;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
129
Recensione:
Indirizzi per estratti:
Indirizzo: Cheroske, AG Univ Maryland Baltimore Cty, Dept Biol Sci, Baltimore, MD 21250 USA Univ Maryland Baltimore Cty Baltimore MD USA 21250 21250 USA
Citazione:
A.G. Cheroske et al., "Effects of physical and biological disturbances on algal turfs in Kaneohe Bay, Hawaii", J EXP MAR B, 248(1), 2000, pp. 1-34

Abstract

Disturbance in coral reef environments commonly results in an algal community dominated by highly productive, small filamentous forms and cyanobacteria, collectively known as algal turf. Research on the types of disturbance responsible for this community structure has concentrated mainly on biological disturbance in the form of grazing, although physical and other forms of biological disturbances may be important in many coral reef areas. On thereef hat in Kaneohe Bay, Oahu, Hawaii, algal turfs grow primarily upon coral rubble that tumbles with passing swells. We manipulated the frequency ofrubble tumbling in field experiments to mimic the effects of physical disturbance by abrasion and light reduction on algal biomass, canopy height, and community structure. Treatments approximated a gradient of disturbance intensities and durations that occur on the reef flat. Although sea urchins and herbivorous fishes are not widespread and abundant on the reef flat, biological disturbances to algal turf communities in the form of herbivory by small crabs and abrasion by tough macroalgae contributed significantly to the variation in algal turf biomass. Within all experiments increasing disturbance significantly reduced algal biomass and canopy heights and the community structure shifted to more disturbance-tolerant algal forms. This studyshows that the chronic physical disturbances from water motion and biological disturbances other than grazing from large herbivores can control algalcommunities in coral reef environments. (C) 2000 Elsevier Science B.V. Allrights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 10:01:25