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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
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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
 
AuthorsWai, TC1
Leung, KMY1
Wu, RSS2 1
Shin, PKS2
Cheung, SG2
Li, XY1
Lee, JHW1 3
 
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
 
CitationMarine Pollution Bulletin, 2011, v. 63 n. 5-12, p. 77-85 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.marpolbul.2011.05.005
 
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.
 
ISSN0025-326X
2013 Impact Factor: 2.793
2013 SCImago Journal Rankings: 1.197
 
DOIhttp://dx.doi.org/10.1016/j.marpolbul.2011.05.005
 
ISI Accession Number IDWOS:000294092700003
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.

 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorWai, TC
 
dc.contributor.authorLeung, KMY
 
dc.contributor.authorWu, RSS
 
dc.contributor.authorShin, PKS
 
dc.contributor.authorCheung, SG
 
dc.contributor.authorLi, XY
 
dc.contributor.authorLee, JHW
 
dc.date.accessioned2011-08-26T14:21:36Z
 
dc.date.available2011-08-26T14:21:36Z
 
dc.date.issued2011
 
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.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationMarine Pollution Bulletin, 2011, v. 63 n. 5-12, p. 77-85 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.marpolbul.2011.05.005
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.marpolbul.2011.05.005
 
dc.identifier.epage85
 
dc.identifier.hkuros190387
 
dc.identifier.isiWOS:000294092700003
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.

 
dc.identifier.issn0025-326X
2013 Impact Factor: 2.793
2013 SCImago Journal Rankings: 1.197
 
dc.identifier.issue5-12
 
dc.identifier.pmid21641622
 
dc.identifier.scopuseid_2-s2.0-79960364545
 
dc.identifier.spage77
 
dc.identifier.urihttp://hdl.handle.net/10722/137231
 
dc.identifier.volume63
 
dc.languageeng
 
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbul
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofMarine Pollution Bulletin
 
dc.relation.referencesReferences in Scopus
 
dc.subject.meshAnimals
 
dc.subject.meshAquaculture
 
dc.subject.meshBiodiversity
 
dc.subject.meshCarbon Isotopes - analysis - metabolism
 
dc.subject.meshEnvironmental Monitoring - methods
 
dc.subject.meshFishes - metabolism
 
dc.subject.meshFood Chain
 
dc.subject.meshIsotopes - analysis
 
dc.subject.meshNitrogen Isotopes - analysis - metabolism
 
dc.subject.meshSeafood - analysis
 
dc.subject.meshWater Pollutants, Chemical - analysis - metabolism
 
dc.subjectAnthropogenic nutrients
 
dc.subjectFish farming
 
dc.subjectStable isotope
 
dc.subjectTrophic dynamics
 
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 guilds
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong
  2. City University of Hong Kong
  3. Hong Kong University of Science and Technology