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Article: Biodiversity and ecosystem functioning in a species-poor guild: A test using tropical stream detritivores

TitleBiodiversity and ecosystem functioning in a species-poor guild: A test using tropical stream detritivores
Authors
KeywordsDetritus
Hong Kong
Litter breakdown
Shredders
Species loss
Issue Date2010
PublisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0018-8158
Citation
Hydrobiologia, 2010, v. 652 n. 1, p. 329-336 How to Cite?
AbstractThe relationship between biodiversity and ecosystem functioning (B-EF) was investigated by examining top-down effects of aquatic detritivore diversity on the functional process of leaf-litter breakdown. This study was undertaken in tropical Hong Kong where the stream detritivore guild is depauperate and loss of one or a few species might have strong effects on processes. Effects of detritivore richness and composition were investigated by comparing feeding rates of three species of detritivores with their two- and three-species mixtures in laboratory trials. The detritivores were a caddisfly larva (Anisocentropus maculatus: Calamoceratidae), a snail (Brotia hainanensis: Pachychilidae) and a shrimp (Caridina cantonensis: Atyidae). Liquidambar formosana (Hamamelidaceae) litter was provided as food. All three detritivore species had positive non-additive effects on litter processing. Per capita and mass-specific feeding rates of each species were faster in mixtures than when they were alone, although the non-additive effects of shrimps and snails were larger than those attributable to caddisflies, and thus, litter processing was strongly influenced by the composition of detritivore mixtures. The compositional effect appears to be evidence of facilitation indicating a lack of functional redundancy amongst these detritivores, probably due to their evolutionary distinctness, implying that extinction consequences in this species-poor guild will depend on the identity of the species lost. © 2010 The Author(s).
Persistent Identifierhttp://hdl.handle.net/10722/144962
ISSN
2015 Impact Factor: 2.051
2015 SCImago Journal Rankings: 1.043
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of Hong Kong Special Administrative Region, China[HKU] 7509/06M
Funding Information:

We thank Lily Ng for technical support. The study described in this article was partially supported by a grant from the Research Grants Council of Hong Kong Special Administrative Region, China (Project No. [HKU] 7509/06M).

References

 

DC FieldValueLanguage
dc.contributor.authorDudgeon, Den_HK
dc.contributor.authorGao, BWen_HK
dc.date.accessioned2012-02-21T05:42:35Z-
dc.date.available2012-02-21T05:42:35Z-
dc.date.issued2010en_HK
dc.identifier.citationHydrobiologia, 2010, v. 652 n. 1, p. 329-336en_HK
dc.identifier.issn0018-8158en_HK
dc.identifier.urihttp://hdl.handle.net/10722/144962-
dc.description.abstractThe relationship between biodiversity and ecosystem functioning (B-EF) was investigated by examining top-down effects of aquatic detritivore diversity on the functional process of leaf-litter breakdown. This study was undertaken in tropical Hong Kong where the stream detritivore guild is depauperate and loss of one or a few species might have strong effects on processes. Effects of detritivore richness and composition were investigated by comparing feeding rates of three species of detritivores with their two- and three-species mixtures in laboratory trials. The detritivores were a caddisfly larva (Anisocentropus maculatus: Calamoceratidae), a snail (Brotia hainanensis: Pachychilidae) and a shrimp (Caridina cantonensis: Atyidae). Liquidambar formosana (Hamamelidaceae) litter was provided as food. All three detritivore species had positive non-additive effects on litter processing. Per capita and mass-specific feeding rates of each species were faster in mixtures than when they were alone, although the non-additive effects of shrimps and snails were larger than those attributable to caddisflies, and thus, litter processing was strongly influenced by the composition of detritivore mixtures. The compositional effect appears to be evidence of facilitation indicating a lack of functional redundancy amongst these detritivores, probably due to their evolutionary distinctness, implying that extinction consequences in this species-poor guild will depend on the identity of the species lost. © 2010 The Author(s).en_HK
dc.languageengen_US
dc.publisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0018-8158en_HK
dc.relation.ispartofHydrobiologiaen_HK
dc.rightsThe Author(s)en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong Licenseen_US
dc.subjectDetritusen_HK
dc.subjectHong Kongen_HK
dc.subjectLitter breakdownen_HK
dc.subjectShreddersen_HK
dc.subjectSpecies lossen_HK
dc.titleBiodiversity and ecosystem functioning in a species-poor guild: A test using tropical stream detritivoresen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4551/resserv?sid=springerlink&genre=article&atitle=Biodiversity and ecosystem functioning in a species-poor guild: a test using tropical stream detritivores&title=Hydrobiologia&issn=00188158&date=2010-09-01&volume=652&issue=1& spage=329&authors=David Dudgeon, Becky W. Gaoen_US
dc.identifier.emailDudgeon, D: ddudgeon@hku.hken_HK
dc.identifier.authorityDudgeon, D=rp00691en_HK
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1007/s10750-010-0365-xen_HK
dc.identifier.scopuseid_2-s2.0-77954688849en_HK
dc.identifier.hkuros194853-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77954688849&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume652en_HK
dc.identifier.issue1en_HK
dc.identifier.spage329en_HK
dc.identifier.epage336en_HK
dc.identifier.eissn1573-5117en_US
dc.identifier.isiWOS:000280087900028-
dc.publisher.placeNetherlandsen_HK
dc.description.otherSpringer Open Choice, 21 Feb 2012en_US
dc.identifier.scopusauthoridDudgeon, D=7006559840en_HK
dc.identifier.scopusauthoridGao, BW=36243379300en_HK
dc.identifier.citeulike7472799-

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