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Article: Contribution of adult aquatic insects to riparian prey availability along tropical forest streams

TitleContribution of adult aquatic insects to riparian prey availability along tropical forest streams
Authors
KeywordsAsia
Bird
Food web
Lateral dispersal
Spider
Issue Date2007
PublisherCSIRO Publishing. The Journal's web site is located at http://www.publish.csiro.au/journals/mfr/
Citation
Marine And Freshwater Research, 2007, v. 58 n. 8, p. 725-732 How to Cite?
AbstractThe contribution of adult aquatic insects to riparian prey availability at four sites along three hillstreams in Hong Kong was estimated during 2004-2006 dry and wet seasons using light traps deployed at different distances from the banks. The number and biomass of aquatic and terrestrial insects collected were markedly higher during the wet season. Numerically, aquatic insects (especially Chironomidae and Philopotamidae) remained a major catch component along banks throughout the year comprising 77% (range: 61-85%) of total insects. Their contribution to total biomass was higher in the wet season (mean: 50%, range: 33-62%) than during the dry season (mean: 21%, range: 8-45%). Aquatic insect abundance decreased with increasing distance from streams during both seasons: numbers at 10-20 m distance were less than 45% of those at the banks, declining to less than 13% at 80 m distance. No such decline with distance was observed for terrestrial insects, but the limited dispersal of aquatic insects meant total insect catches were highest along stream banks. Changes in biomass with distance from streams were similar to those for abundance. Adult aquatic insects may represent an important water-to-land energy subsidy for riparian predators in Hong Kong, but the magnitude varied seasonally and fell sharply with increasing distance from streams. © CSIRO 2007.
Persistent Identifierhttp://hdl.handle.net/10722/89209
ISSN
2015 Impact Factor: 1.583
2015 SCImago Journal Rankings: 0.821
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChan, EKWen_HK
dc.contributor.authorZhang, Yen_HK
dc.contributor.authorDudgeon, Den_HK
dc.date.accessioned2010-09-06T09:53:55Z-
dc.date.available2010-09-06T09:53:55Z-
dc.date.issued2007en_HK
dc.identifier.citationMarine And Freshwater Research, 2007, v. 58 n. 8, p. 725-732en_HK
dc.identifier.issn1323-1650en_HK
dc.identifier.urihttp://hdl.handle.net/10722/89209-
dc.description.abstractThe contribution of adult aquatic insects to riparian prey availability at four sites along three hillstreams in Hong Kong was estimated during 2004-2006 dry and wet seasons using light traps deployed at different distances from the banks. The number and biomass of aquatic and terrestrial insects collected were markedly higher during the wet season. Numerically, aquatic insects (especially Chironomidae and Philopotamidae) remained a major catch component along banks throughout the year comprising 77% (range: 61-85%) of total insects. Their contribution to total biomass was higher in the wet season (mean: 50%, range: 33-62%) than during the dry season (mean: 21%, range: 8-45%). Aquatic insect abundance decreased with increasing distance from streams during both seasons: numbers at 10-20 m distance were less than 45% of those at the banks, declining to less than 13% at 80 m distance. No such decline with distance was observed for terrestrial insects, but the limited dispersal of aquatic insects meant total insect catches were highest along stream banks. Changes in biomass with distance from streams were similar to those for abundance. Adult aquatic insects may represent an important water-to-land energy subsidy for riparian predators in Hong Kong, but the magnitude varied seasonally and fell sharply with increasing distance from streams. © CSIRO 2007.en_HK
dc.languageengen_HK
dc.publisherCSIRO Publishing. The Journal's web site is located at http://www.publish.csiro.au/journals/mfr/en_HK
dc.relation.ispartofMarine and Freshwater Researchen_HK
dc.subjectAsiaen_HK
dc.subjectBirden_HK
dc.subjectFood weben_HK
dc.subjectLateral dispersalen_HK
dc.subjectSpideren_HK
dc.titleContribution of adult aquatic insects to riparian prey availability along tropical forest streamsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1323-1650&volume=58&spage=725&epage=732&date=2007&atitle=Contribution+of+adult+aquatic+insects+to+riparian+prey+availability+along+tropical+forest+streams.en_HK
dc.identifier.emailDudgeon, D: ddudgeon@hku.hken_HK
dc.identifier.authorityDudgeon, D=rp00691en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1071/MF07033en_HK
dc.identifier.scopuseid_2-s2.0-34548259167en_HK
dc.identifier.hkuros151374en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34548259167&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume58en_HK
dc.identifier.issue8en_HK
dc.identifier.spage725en_HK
dc.identifier.epage732en_HK
dc.identifier.isiWOS:000248985000005-
dc.publisher.placeAustraliaen_HK
dc.identifier.scopusauthoridChan, EKW=16241096200en_HK
dc.identifier.scopusauthoridZhang, Y=35320669000en_HK
dc.identifier.scopusauthoridDudgeon, D=7006559840en_HK

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