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dc.contributor.convenorMelissa Markowitz; J Ward
dc.contributor.authorShaw, Emily
dc.contributor.authorGabric, Albert
dc.contributor.authorYin, Kedong
dc.contributor.authorTularam, Gurudeo
dc.contributor.editorAGU
dc.date.accessioned2017-05-03T14:23:44Z
dc.date.available2017-05-03T14:23:44Z
dc.date.issued2008
dc.date.modified2010-12-03T07:25:55Z
dc.identifier.urihttp://hdl.handle.net/10072/35224
dc.description.abstractThe coastal waters of Hong Kong have been influenced by a number of anthropogenic factors, including cultural eutrophication, land reclamation and dredging. The effects of climatic variability on phytoplankton dynamics may be difficult to discern in coastal ecosystems due to the interaction of climatic variability with anthropogenic effects. In this study, the influence of the El Nino-Southern Oscillation (ENSO), Pacific Decadal Oscillation (PDO) and North Pacific Gyre Oscillation (NPGO) on phytoplankton dynamics in Hong Kong coastal waters was examined from 1986-2004. Weak correlations were found to exist between chlorophyll a concentration (Chl) and the multivariate ENSO index and PDO index. However, strong correlations were found to exist between the NPGO index and Chl. The NPGO has been proposed to influence Chl concentration in the North Pacific through its influence on upwelling and nutrient concentrations. In the coastal waters of Hong Kong, which are highly impacted by cultural eutrophication, we propose a different mechanism. The NPGO is locally forced by surface wind variability and we have found a strong negative correlation between NPGO and wind speed in Hong Kong. By destabilizing the water column, high wind speeds are detrimental to phytoplankton growth and therefore we hypothesize that the relationship between the NPGO and phytoplankton dynamics is as a result of wind speed variability. We have shown that large scale modes of climatic variability can be important in controlling phytoplankton dynamics even in ecosystems which are markedly influenced by a number of anthropogenic factors.
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherAmerican Geophysical Union
dc.publisher.placeSan Francisco
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofconferencenameAmerican Geophysical Union Fall Meeting 2008
dc.relation.ispartofconferencetitleAmerican Geophysical Union Fall Meeting 2008
dc.relation.ispartofdatefrom2008-12-18
dc.relation.ispartofdateto2008-12-19
dc.relation.ispartoflocationSan Francisco
dc.rights.retentionY
dc.subject.fieldofresearchClimate Change Processes
dc.subject.fieldofresearchcode040104
dc.titleNorth Pacific Gyre Oscillation Controls Phytoplankton Dynamics in Hong Kong Coastal Waters
dc.typeConference output
dc.type.descriptionE3 - Conferences (Extract Paper)
dc.type.codeE - Conference Publications
gro.facultyGriffith Sciences, Griffith School of Environment
gro.date.issued2008
gro.hasfulltextNo Full Text
gro.griffith.authorGabric, Albert J.
gro.griffith.authorTularam, Gurudeo A.
gro.griffith.authorShaw, Emily C.
gro.griffith.authorYin, Kedong


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    Contains papers delivered by Griffith authors at national and international conferences.

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