File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Diatoms from the Pearl River estuary, China and their suitability as water salinity indicators for coastal environments

TitleDiatoms from the Pearl River estuary, China and their suitability as water salinity indicators for coastal environments
Authors
KeywordsDiatoms
Freshwater discharge
Pearl River estuary
Salinity
Transfer function
Issue Date2010
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/marmicro
Citation
Marine Micropaleontology, 2010, v. 75 n. 1-4, p. 38-49 How to Cite?
AbstractWe collected 77 modern diatom samples from sites across the Pearl River estuary, China to analyze the relationship between diatom assemblages and environmental parameters including water salinity, water depth and sediment particle size. Results showed that marine diatoms were dominant in the high salinity environment around Hong Kong and the outer part of the estuary. Brackish water diatoms were found in high abundance in the central part of the estuary. Both marine and brackish water diatoms were predominantly planktonic taxa. Freshwater diatoms dominated in low salinity environments, with planktonic taxa in the deep tidal channel and benthic species in the shallow deltaic distributaries. Statistical tests indicated that the modern diatom distribution is strongly correlated with salinity but is also influenced by several other environmental variables including sand content and water depth. Transfer functions relating diatom assemblages and water salinity had high r2 (0.94-0.98 for WA-PLS, 0.95 for MA and 0.98 for MAT) and relatively low RMSEP (2.66-1.63‰ for WA-PLS, 2.35‰ for MA and 2.70‰ for MAT). Due to the geographical distribution of samples, some spatial autocorrelation is likely present in the dataset. When this effect is considered, r2 decreases to 0.90 and RMSEP increases to 5.41‰, although the diatom-salinity relationship remains appropriate for reconstructing paleosalinity. Based on this estimate, a diatom-based salinity transfer function with high accuracy and precision is developed and successfully applied to a sediment core for quantitative reconstruction of the Holocene paleosalinity in the Pearl River estuary. © 2010 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151304
ISSN
2015 Impact Factor: 1.859
2015 SCImago Journal Rankings: 1.100
ISI Accession Number ID
Funding AgencyGrant Number
National Science Foundation of China40771218
Research Grants Council of the Hong Kong SAR, ChinaHKU7058/06P
HKU7052/08P
NERC/EPSRC (UK)05-08
Funding Information:

This research is supported by a research grant from the National Science Foundation of China (no. 40771218) to Huang and Zong, two research grants from the Research Grants Council of the Hong Kong SAR, China (no. HKU7058/06P and HKU7052/08P) to Yim and a NERC/EPSRC 05-08 (UK) PhD studentship from the Dorothy Hodgkin Postgraduate Award to Yu. The authors thank the director of the Environmental Protection Department, Hong Kong SAR for the collection of surface sediment samples and water salinity in the Hong Kong area.

References

 

DC FieldValueLanguage
dc.contributor.authorZong, Yen_HK
dc.contributor.authorKemp, ACen_HK
dc.contributor.authorYu, Fen_HK
dc.contributor.authorLloyd, JMen_HK
dc.contributor.authorHuang, Gen_HK
dc.contributor.authorYim, WWSen_HK
dc.date.accessioned2012-06-26T06:20:21Z-
dc.date.available2012-06-26T06:20:21Z-
dc.date.issued2010en_HK
dc.identifier.citationMarine Micropaleontology, 2010, v. 75 n. 1-4, p. 38-49en_HK
dc.identifier.issn0377-8398en_HK
dc.identifier.urihttp://hdl.handle.net/10722/151304-
dc.description.abstractWe collected 77 modern diatom samples from sites across the Pearl River estuary, China to analyze the relationship between diatom assemblages and environmental parameters including water salinity, water depth and sediment particle size. Results showed that marine diatoms were dominant in the high salinity environment around Hong Kong and the outer part of the estuary. Brackish water diatoms were found in high abundance in the central part of the estuary. Both marine and brackish water diatoms were predominantly planktonic taxa. Freshwater diatoms dominated in low salinity environments, with planktonic taxa in the deep tidal channel and benthic species in the shallow deltaic distributaries. Statistical tests indicated that the modern diatom distribution is strongly correlated with salinity but is also influenced by several other environmental variables including sand content and water depth. Transfer functions relating diatom assemblages and water salinity had high r2 (0.94-0.98 for WA-PLS, 0.95 for MA and 0.98 for MAT) and relatively low RMSEP (2.66-1.63‰ for WA-PLS, 2.35‰ for MA and 2.70‰ for MAT). Due to the geographical distribution of samples, some spatial autocorrelation is likely present in the dataset. When this effect is considered, r2 decreases to 0.90 and RMSEP increases to 5.41‰, although the diatom-salinity relationship remains appropriate for reconstructing paleosalinity. Based on this estimate, a diatom-based salinity transfer function with high accuracy and precision is developed and successfully applied to a sediment core for quantitative reconstruction of the Holocene paleosalinity in the Pearl River estuary. © 2010 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/marmicroen_HK
dc.relation.ispartofMarine Micropaleontologyen_HK
dc.subjectDiatomsen_HK
dc.subjectFreshwater dischargeen_HK
dc.subjectPearl River estuaryen_HK
dc.subjectSalinityen_HK
dc.subjectTransfer functionen_HK
dc.titleDiatoms from the Pearl River estuary, China and their suitability as water salinity indicators for coastal environmentsen_HK
dc.typeArticleen_HK
dc.identifier.emailZong, Y: yqzong@hku.hken_HK
dc.identifier.emailYim, WWS: wwsyim@hku.hken_HK
dc.identifier.authorityZong, Y=rp00846en_HK
dc.identifier.authorityYim, WWS=rp01746en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.marmicro.2010.02.004en_HK
dc.identifier.scopuseid_2-s2.0-77953238172en_HK
dc.identifier.hkuros171037-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77953238172&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume75en_HK
dc.identifier.issue1-4en_HK
dc.identifier.spage38en_HK
dc.identifier.epage49en_HK
dc.identifier.eissn1872-6186-
dc.identifier.isiWOS:000278627800003-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridZong, Y=7005203454en_HK
dc.identifier.scopusauthoridKemp, AC=7202026298en_HK
dc.identifier.scopusauthoridYu, F=35747418400en_HK
dc.identifier.scopusauthoridLloyd, JM=7402365382en_HK
dc.identifier.scopusauthoridHuang, G=7403425099en_HK
dc.identifier.scopusauthoridYim, WWS=7007024728en_HK
dc.identifier.citeulike6831083-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats