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Article: Stable isotopes as a useful tool for revealing the environmental fate and trophic effect of open-sea-cage fish farm wastes on marine benthic organisms with different feeding guilds

TitleStable isotopes as a useful tool for revealing the environmental fate and trophic effect of open-sea-cage fish farm wastes on marine benthic organisms with different feeding guilds
Authors
KeywordsAnthropogenic nutrients
Fish farming
Stable isotope
Trophic dynamics
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbul
Citation
Marine Pollution Bulletin, 2011, v. 63 n. 5-12, p. 77-85 How to Cite?
AbstractEnvironmental fate of fish farm wastes (FFW) released from an open-sea-cage farm at Kat O, Hong Kong was examined by measuring carbon and nitrogen stable isotope (SI) ratios in selected benthic organisms collected along a 2000m transect from the farm. Our results showed that FFW significantly influenced the energy utilization profile of consumers near the fish farm. Although nitrogen enrichment effect on δ 15N was anticipated in biota near the farm, the predicted patterns did not consistently occur in all feeding guilds. Two species of suspension-feeders, which relied on naturally δ 15N-depleted sources, were δ 15N-enriched near the fish farm. In contrast, both species of benthic grazer and deposit-feeder, which relied on naturally δ 15N-enriched algal sources, were δ 15N-depleted under the influence of FFW. The SI signatures of biota can, therefore, serve as feasible biomarkers for FFW discharges only when the trophic structure of the receiving environment is fully elucidated. © 2011 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/137231
ISSN
2014 Impact Factor: 2.991
2014 SCImago Journal Rankings: 1.145
ISI Accession Number ID
Funding AgencyGrant Number
University of Hong Kong1020-4904/5692
Strategic Research Theme on Sustainable Environment [Sustainable Water] and the Faculty of Science)
University Grants Committee of the Hong Kong Special Administration Region, ChinaAoE/P-04/2004
Funding Information:

This study was supported by the University of Hong Kong (in forms of a seed grant [Project No. 1020-4904/5692], and supports from the Strategic Research Theme on Sustainable Environment [Sustainable Water] and the Faculty of Science), and the Area of Excellence Scheme under the University Grants Committee of the Hong Kong Special Administration Region, China (Project No. AoE/P-04/2004). The authors are grateful to Agriculture Fisheries and Conservation Department for providing the fish feed and technical assistance. We thank Janet Lee, Wolfie Lai and Cheung Ming (HKU) for their help in the field sampling, and Dr. Ken Wong (HKU) for providing the tidal current data.

References

 

DC FieldValueLanguage
dc.contributor.authorWai, TCen_HK
dc.contributor.authorLeung, KMYen_HK
dc.contributor.authorWu, RSSen_HK
dc.contributor.authorShin, PKSen_HK
dc.contributor.authorCheung, SGen_HK
dc.contributor.authorLi, XYen_HK
dc.contributor.authorLee, JHWen_HK
dc.date.accessioned2011-08-26T14:21:36Z-
dc.date.available2011-08-26T14:21:36Z-
dc.date.issued2011en_HK
dc.identifier.citationMarine Pollution Bulletin, 2011, v. 63 n. 5-12, p. 77-85en_HK
dc.identifier.issn0025-326Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/137231-
dc.description.abstractEnvironmental fate of fish farm wastes (FFW) released from an open-sea-cage farm at Kat O, Hong Kong was examined by measuring carbon and nitrogen stable isotope (SI) ratios in selected benthic organisms collected along a 2000m transect from the farm. Our results showed that FFW significantly influenced the energy utilization profile of consumers near the fish farm. Although nitrogen enrichment effect on δ 15N was anticipated in biota near the farm, the predicted patterns did not consistently occur in all feeding guilds. Two species of suspension-feeders, which relied on naturally δ 15N-depleted sources, were δ 15N-enriched near the fish farm. In contrast, both species of benthic grazer and deposit-feeder, which relied on naturally δ 15N-enriched algal sources, were δ 15N-depleted under the influence of FFW. The SI signatures of biota can, therefore, serve as feasible biomarkers for FFW discharges only when the trophic structure of the receiving environment is fully elucidated. © 2011 Elsevier Ltd.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbulen_HK
dc.relation.ispartofMarine Pollution Bulletinen_HK
dc.subjectAnthropogenic nutrientsen_HK
dc.subjectFish farmingen_HK
dc.subjectStable isotopeen_HK
dc.subjectTrophic dynamicsen_HK
dc.subject.meshAnimalsen_HK
dc.subject.meshAquacultureen_HK
dc.subject.meshBiodiversityen_HK
dc.subject.meshCarbon Isotopes - analysis - metabolismen_HK
dc.subject.meshEnvironmental Monitoring - methodsen_HK
dc.subject.meshFishes - metabolismen_HK
dc.subject.meshFood Chainen_HK
dc.subject.meshIsotopes - analysisen_HK
dc.subject.meshNitrogen Isotopes - analysis - metabolismen_HK
dc.subject.meshSeafood - analysisen_HK
dc.subject.meshWater Pollutants, Chemical - analysis - metabolismen_HK
dc.titleStable isotopes as a useful tool for revealing the environmental fate and trophic effect of open-sea-cage fish farm wastes on marine benthic organisms with different feeding guildsen_HK
dc.typeArticleen_HK
dc.identifier.emailWai, TC: waitc@hkucc.hku.hken_HK
dc.identifier.emailLeung, KMY: kmyleung@hku.hken_HK
dc.identifier.emailWu, RSS: rudolfwu@hku.hken_HK
dc.identifier.emailLi, XY: xlia@hkucc.hku.hken_HK
dc.identifier.emailLee, JHW: hreclhw@hku.hken_HK
dc.identifier.authorityWai, TC=rp00797en_HK
dc.identifier.authorityLeung, KMY=rp00733en_HK
dc.identifier.authorityWu, RSS=rp01398en_HK
dc.identifier.authorityLi, XY=rp00222en_HK
dc.identifier.authorityLee, JHW=rp00061en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.marpolbul.2011.05.005en_HK
dc.identifier.pmid21641622en_HK
dc.identifier.scopuseid_2-s2.0-79960364545en_HK
dc.identifier.hkuros190387en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79960364545&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume63en_HK
dc.identifier.issue5-12en_HK
dc.identifier.spage77en_HK
dc.identifier.epage85en_HK
dc.identifier.isiWOS:000294092700003-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridWai, TC=15039017100en_HK
dc.identifier.scopusauthoridLeung, KMY=7401860738en_HK
dc.identifier.scopusauthoridWu, RSS=7402945079en_HK
dc.identifier.scopusauthoridShin, PKS=7004445653en_HK
dc.identifier.scopusauthoridCheung, SG=36911219300en_HK
dc.identifier.scopusauthoridLi, XY=26642887900en_HK
dc.identifier.scopusauthoridLee, JHW=36078318900en_HK

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