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Article: Microspatial variation in marine biofilm abundance on intertidal rock surfaces

TitleMicrospatial variation in marine biofilm abundance on intertidal rock surfaces
Authors
KeywordsMolluscan grazers
Recruitment
Settlement
Surface roughness
Tropical rocky shore
Issue Date2006
PublisherInter-Research. The Journal's web site is located at http://www.int-res.com/journals/ame/index.html
Citation
Aquatic Microbial Ecology, 2006, v. 42 n. 2, p. 187-197 How to Cite?
AbstractThe effect of substrate surface roughness on small-scale patchiness and the ability of molluscan grazers to feed on intertidal biofilms was examined in a factorial experiment. Granite slabs were treated to create 4 different levels of surface roughness, and biofilm and macroalgae were allowed to recruit. Biofilm cover varied greatly with slab roughness, and was spatially patchy at a scale of millimetres. Diatoms dominated the biofilm, but were less abundant on surfaces with the smallest pits. Cover of diatoms and cyanobacteria was affected by surface roughness, with increased abundance around surface features. Different species of grazer varied in their success at removing certain diatoms and cyanobacteria from slabs of varying roughness, due to either the morphology of the different food types or grazer radula structure. Cover of macroalgal species on the slabs of different roughness also varied, and one species, Hypnea sp., did not recruit on smooth slabs. Rock roughness, therefore, affects both the biofilm and algal species that recruit and their abundance. Grazers were able to remove algae from slabs of all roughness with no apparent species-specific differences in their ability. However, grazer species appear to be more or less efficient at feeding according to the level of roughness, and this combination of variation in rock roughness and grazer efficiency may explain the observed small-scale patchiness on rocky shores in Hong Kong. © Inter-Research 2006.
Persistent Identifierhttp://hdl.handle.net/10722/57265
ISSN
2015 Impact Factor: 2.109
2015 SCImago Journal Rankings: 1.211
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHutchinson, Nen_HK
dc.contributor.authorNagarkar, Sen_HK
dc.contributor.authorAitchison, JCen_HK
dc.contributor.authorWilliams, GAen_HK
dc.date.accessioned2010-04-12T01:31:16Z-
dc.date.available2010-04-12T01:31:16Z-
dc.date.issued2006en_HK
dc.identifier.citationAquatic Microbial Ecology, 2006, v. 42 n. 2, p. 187-197en_HK
dc.identifier.issn0948-3055en_HK
dc.identifier.urihttp://hdl.handle.net/10722/57265-
dc.description.abstractThe effect of substrate surface roughness on small-scale patchiness and the ability of molluscan grazers to feed on intertidal biofilms was examined in a factorial experiment. Granite slabs were treated to create 4 different levels of surface roughness, and biofilm and macroalgae were allowed to recruit. Biofilm cover varied greatly with slab roughness, and was spatially patchy at a scale of millimetres. Diatoms dominated the biofilm, but were less abundant on surfaces with the smallest pits. Cover of diatoms and cyanobacteria was affected by surface roughness, with increased abundance around surface features. Different species of grazer varied in their success at removing certain diatoms and cyanobacteria from slabs of varying roughness, due to either the morphology of the different food types or grazer radula structure. Cover of macroalgal species on the slabs of different roughness also varied, and one species, Hypnea sp., did not recruit on smooth slabs. Rock roughness, therefore, affects both the biofilm and algal species that recruit and their abundance. Grazers were able to remove algae from slabs of all roughness with no apparent species-specific differences in their ability. However, grazer species appear to be more or less efficient at feeding according to the level of roughness, and this combination of variation in rock roughness and grazer efficiency may explain the observed small-scale patchiness on rocky shores in Hong Kong. © Inter-Research 2006.en_HK
dc.languageengen_HK
dc.publisherInter-Research. The Journal's web site is located at http://www.int-res.com/journals/ame/index.htmlen_HK
dc.relation.ispartofAquatic Microbial Ecologyen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsAquatic Microbial Ecology. Copyright © Inter-Research.en_HK
dc.subjectMolluscan grazersen_HK
dc.subjectRecruitmenten_HK
dc.subjectSettlementen_HK
dc.subjectSurface roughnessen_HK
dc.subjectTropical rocky shoreen_HK
dc.titleMicrospatial variation in marine biofilm abundance on intertidal rock surfacesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0948-3055&volume=42&issue=2&spage=187&epage=197&date=2006&atitle=Microspatial+variation+in+marine+biofilm+abundance+on+intertidal+rock+surfacesen_HK
dc.identifier.emailAitchison, JC: jona@hku.hken_HK
dc.identifier.emailWilliams, GA: hrsbwga@hkucc.hku.hken_HK
dc.identifier.authorityAitchison, JC=rp00658en_HK
dc.identifier.authorityWilliams, GA=rp00804en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.3354/ame042187en_HK
dc.identifier.scopuseid_2-s2.0-33645364138en_HK
dc.identifier.hkuros115248-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33645364138&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume42en_HK
dc.identifier.issue2en_HK
dc.identifier.spage187en_HK
dc.identifier.epage197en_HK
dc.identifier.isiWOS:000237261900008-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridHutchinson, N=7007086021en_HK
dc.identifier.scopusauthoridNagarkar, S=6602572935en_HK
dc.identifier.scopusauthoridAitchison, JC=7102533858en_HK
dc.identifier.scopusauthoridWilliams, GA=7406082821en_HK

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