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Article: Leaf litter in a tropical stream:food or substrate for macroinvertebrates?

TitleLeaf litter in a tropical stream:food or substrate for macroinvertebrates?
Authors
Issue Date1999
PublisherE Schweizerbart'sche Verlagsbuchhandlung. The Journal's web site is located at http://www.schweizerbart.de/j/archiv-hydrobiologie
Citation
Archiv Fur Hydrobiologie, 1999, v. 146 n. 1, p. 65-82 How to Cite?
AbstractThe densities of macroinvertebrates colonizing three types of leaf litter in a shaded and an unshaded reach of a Hong Kong stream were compared in order to determine whether the leaves served as a food source or a substrate for colonizers. Macroinvertebrate densities on leaf packs made of Ficus fistulosa (Moraceae) - a palatable leaf - were compared with those on Castopsis fissa (Fagaceae) - a less palatable species rich in polyphenols - and on artificial and inedible polyester leaves. Colonizer densities (total individuals and abundance of major taxa) were highest on Ficus leaves and lowest on artificial leaves. Densities increased with time and most of the variation in colonizer densities was explained by leaf type and time. Numbers per leaf pack increased with time on Castanopsis and artificial leaves, but abundance on Ficus declined at the end of the study (day 35) when little of the leaf packs remained. The densities of Baetis mayflies (Baetidae) and Orthocladiinae (Diptera: Chironomidae) were apparently affected by the amounts of algae that developed on leaf surfaces, and these taxa were more numerous on leaf packs placed in the unshaded stream reach. However, the effects of algae did not override the influence of leaf type. Despite a paucity of shredders in this tropical stream, we believe that greater densities of macroinvertebrates (mainly collectors) on palatable leaves reflected their importance as a food source rather than a substrate.
Persistent Identifierhttp://hdl.handle.net/10722/178658
ISSN
2008 Impact Factor: 1.293
References

 

DC FieldValueLanguage
dc.contributor.authorDudgeon, Den_US
dc.contributor.authorWu, KKYen_US
dc.date.accessioned2012-12-19T09:48:59Z-
dc.date.available2012-12-19T09:48:59Z-
dc.date.issued1999en_US
dc.identifier.citationArchiv Fur Hydrobiologie, 1999, v. 146 n. 1, p. 65-82en_US
dc.identifier.issn0003-9136en_US
dc.identifier.urihttp://hdl.handle.net/10722/178658-
dc.description.abstractThe densities of macroinvertebrates colonizing three types of leaf litter in a shaded and an unshaded reach of a Hong Kong stream were compared in order to determine whether the leaves served as a food source or a substrate for colonizers. Macroinvertebrate densities on leaf packs made of Ficus fistulosa (Moraceae) - a palatable leaf - were compared with those on Castopsis fissa (Fagaceae) - a less palatable species rich in polyphenols - and on artificial and inedible polyester leaves. Colonizer densities (total individuals and abundance of major taxa) were highest on Ficus leaves and lowest on artificial leaves. Densities increased with time and most of the variation in colonizer densities was explained by leaf type and time. Numbers per leaf pack increased with time on Castanopsis and artificial leaves, but abundance on Ficus declined at the end of the study (day 35) when little of the leaf packs remained. The densities of Baetis mayflies (Baetidae) and Orthocladiinae (Diptera: Chironomidae) were apparently affected by the amounts of algae that developed on leaf surfaces, and these taxa were more numerous on leaf packs placed in the unshaded stream reach. However, the effects of algae did not override the influence of leaf type. Despite a paucity of shredders in this tropical stream, we believe that greater densities of macroinvertebrates (mainly collectors) on palatable leaves reflected their importance as a food source rather than a substrate.en_US
dc.languageengen_US
dc.publisherE Schweizerbart'sche Verlagsbuchhandlung. The Journal's web site is located at http://www.schweizerbart.de/j/archiv-hydrobiologieen_US
dc.relation.ispartofArchiv fur Hydrobiologieen_US
dc.titleLeaf litter in a tropical stream:food or substrate for macroinvertebrates?en_US
dc.typeArticleen_US
dc.identifier.emailDudgeon, D: ddudgeon@hku.hken_US
dc.identifier.authorityDudgeon, D=rp00691en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0032870355en_US
dc.identifier.hkuros47910-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032870355&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume146en_US
dc.identifier.issue1en_US
dc.identifier.spage65en_US
dc.identifier.epage82en_US
dc.publisher.placeGermanyen_US
dc.identifier.scopusauthoridDudgeon, D=7006559840en_US
dc.identifier.scopusauthoridWu, KKY=36991041700en_US

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