Article: Effects of hypoxia on growth of the diatom Skeletonema costatum

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TitleEffects of hypoxia on growth of the diatom Skeletonema costatum
AuthorsWu, RSS2
Wo, KT1 3
Chiu, JMY2
KeywordsAnoxic conditions
Chlorophyll a
Diatom
Dissolved oxygen
Experimental study
Issue Date2012
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jembe
CitationJournal Of Experimental Marine Biology And Ecology, 2012, v. 420-421, p. 65-68 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.jembe.2012.04.003
AbstractHypoxia, defined as dissolved oxygen falls below 2.8mg O 2 L -1, affects several 100,000km 2 of marine water worldwide. Previous studies have shown that hypoxia results in aberrant behaviors of benthic fauna, collapse of fisheries, and major changes in the structure and trophodynamics of marine ecosystems. Nevertheless, it is not known whether, and if so how, hypoxia can affect the phytoplankton, which accounts for the major part of the primary productivity of marine ecosystems. The present study investigated the effects of hypoxia on the growth of the diatom Skeletonema costatum. Diatoms were cultured at three levels of oxygen (i.e. 7.0, 2.0, 0.5mg O 2 L -1) for 14days, and the biological endpoints (i.e. cell size, cell density, optical density, chlorophyll a concentration, adenylate energy charge) were measured at 0, 1, 3, 5, 7, and 14days. Our results demonstrated that all metrics and the calculated specific growth rate over the 14day experimental period were negatively affected by 0.5mg O 2 L -1. Results of this study, for the first time, provided the evidence and important insight of the impacts of hypoxia on the functions of phytoplankton in marine ecosystems. © 2012 Elsevier B.V.
ISSN0022-0981
2011 Impact Factor: 1.875
2011 SCImago Journal Rankings: 0.096
DOIhttp://dx.doi.org/10.1016/j.jembe.2012.04.003
DC Field
Value
dc.contributor.authorWu, RSS
dc.contributor.authorWo, KT
dc.contributor.authorChiu, JMY
dc.date.accessioned2012-09-20T08:25:43Z
dc.date.available2012-09-20T08:25:43Z
dc.date.issued2012
dc.description.abstractHypoxia, defined as dissolved oxygen falls below 2.8mg O 2 L -1, affects several 100,000km 2 of marine water worldwide. Previous studies have shown that hypoxia results in aberrant behaviors of benthic fauna, collapse of fisheries, and major changes in the structure and trophodynamics of marine ecosystems. Nevertheless, it is not known whether, and if so how, hypoxia can affect the phytoplankton, which accounts for the major part of the primary productivity of marine ecosystems. The present study investigated the effects of hypoxia on the growth of the diatom Skeletonema costatum. Diatoms were cultured at three levels of oxygen (i.e. 7.0, 2.0, 0.5mg O 2 L -1) for 14days, and the biological endpoints (i.e. cell size, cell density, optical density, chlorophyll a concentration, adenylate energy charge) were measured at 0, 1, 3, 5, 7, and 14days. Our results demonstrated that all metrics and the calculated specific growth rate over the 14day experimental period were negatively affected by 0.5mg O 2 L -1. Results of this study, for the first time, provided the evidence and important insight of the impacts of hypoxia on the functions of phytoplankton in marine ecosystems. © 2012 Elsevier B.V.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationJournal Of Experimental Marine Biology And Ecology, 2012, v. 420-421, p. 65-68 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.jembe.2012.04.003
dc.identifier.citeulike10649839
dc.identifier.doihttp://dx.doi.org/10.1016/j.jembe.2012.04.003
dc.identifier.epage68
dc.identifier.hkuros203329
dc.identifier.issn0022-0981
2011 Impact Factor: 1.875
2011 SCImago Journal Rankings: 0.096
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-84860329087
dc.identifier.spage65
dc.identifier.urihttp://hdl.handle.net/10722/165945
dc.identifier.volume420-421
dc.languageeng
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jembe
dc.publisher.placeNetherlands
dc.relation.ispartofJournal Of Experimental Marine Biology And Ecology
dc.subjectAnoxic conditions
dc.subjectChlorophyll a
dc.subjectDiatom
dc.subjectDissolved oxygen
dc.subjectExperimental study
dc.titleEffects of hypoxia on growth of the diatom Skeletonema costatum
dc.typeArticle
Author Affiliations
  1. Hong Kong SAR Government
  2. The University of Hong Kong
  3. City University of Hong Kong