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dc.contributor.authorHo, Maureen
dc.contributor.authorCarpenter, Robert C
dc.date.accessioned2017-06-22T01:11:36Z
dc.date.available2017-06-22T01:11:36Z
dc.date.issued2017
dc.identifier.issn0022-0981
dc.identifier.doi10.1016/j.jembe.2017.03.009
dc.identifier.urihttp://hdl.handle.net/10072/340676
dc.description.abstractThe physical environment plays a key role in facilitating the transfer of nutrients and dissolved gases to marine organisms and can alter the rate of delivery of dissolved inorganic carbon. For non-calcifying macroalgae, water motion can influence the physiological and ecological responses to various environmental changes such as ocean acidification (OA). We tested the effects of lowered pH under three different flow speeds on three dominant non-calcifying macroalgal species differing in their carbon-use and are commonly found in the back reefs of Moorea, French Polynesia. Relative growth rates (RGR) of two phaeophytes, Dictyota bartayresiana and Lobophora variegata (HCO3− users), and a rhodophyte, Amansia rhodantha (CO2 user) were measured to examine how the combined effects of OA and flow can affect algal growth. Growth rates were affected independently by pCO2 and flow treatments but there was no significant interactive effect. Additionally, growth rates among species varied within the different flow regimes. Of the three species, L. variegata had the overall greatest increase in RGR across all three flow speeds while A. rhodantha exhibited the greatest negative impact under elevated pCO2 at 0.1 cm·s− 1. These differential responses among algal species demonstrate the importance of flow when examining responses to a changing environment, and if the responses of macroalgae differ based on their carbon-use strategies, it may provide advantages to some macroalgal species in a future, more acidic ocean.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier Science
dc.relation.ispartofpagefrom58
dc.relation.ispartofpageto65
dc.relation.ispartofjournalJournal of Experimental Marine Biology and Ecology
dc.relation.ispartofvolume491
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchOther environmental sciences not elsewhere classified
dc.subject.fieldofresearchBiological sciences
dc.subject.fieldofresearchEcology
dc.subject.fieldofresearchcode41
dc.subject.fieldofresearchcode419999
dc.subject.fieldofresearchcode31
dc.subject.fieldofresearchcode3103
dc.titleDifferential growth responses to water flow and reduced pH in tropical marine macroalgae
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, Griffith School of Environment
gro.hasfulltextNo Full Text
gro.griffith.authorHo, Maureen


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