Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/14000
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dc.contributor.authorKobayashi, Tsuyoshien
dc.contributor.authorRalph, Timothyen
dc.contributor.authorRyder, Darrenen
dc.contributor.authorHunter, Simon Jen
dc.date.accessioned2014-02-13T16:41:00Z
dc.date.issued2013en
dc.identifier.citationEcological Research, 28(5), p. 833-843en
dc.identifier.issn0912-3814en
dc.identifier.issn1440-1703en
dc.identifier.urihttps://hdl.handle.net/1959.11/14000en
dc.description.abstractGross primary productivity (GPP) of phytoplankton and planktonic respiration (PR) (i.e., planktonic metabolism) are critical pathways for carbon transformation in many aquatic ecosystems. In inland floodplain wetlands with variable inundation regimes, quantitative measurements of GPP and PR are rare and their relationships with wetland environmental conditions are largely unknown. We measured PR and the GPP of phytoplankton using light and dark biological oxygen demand bottles in open waters of channel and non-channel floodplain habitats of inland floodplain wetlands of southeast Australia that had been inundated by environmental water. Overall, GPP varied from 3.7 to 405.5 mg C m-³ h-¹ (mean ± standard error: 89.4 ± 9.2 mg C m-³ h-¹, 'n' = 81), PR from 1.5 to 251.6 mg C m-³ h-¹ (43.2 ± 5.6 mg C m-³ h-¹, 'n' = 81), and GPP/PR from 0.2 to 15.6 (3.0 ± 0.3, 'n' = 81). In terms of wetland environmental conditions, total nitrogen (TN) ranged from 682.0 to 14,700.0 mg m-³ (mean ± standard error: 2,643.0 ± 241.6 mg m-³, 'n' = 81), total phosphorus (TP) from 48.0 to 1,405.0 mg m-³ (316.8 ± 31.4 mg m-³, 'n' = 81), and dissolved organic carbon (DOC) from 1.9 to 46.3 g m-³ (22.0 ± 1.6 g m-³, 'n' = 81). Using ordinary least-squares multiple regression analyses, the rates of GPP and PR, and their ratio (GPP/PR) were modeled as a function of TN, TP, and DOC that had been measured concomitantly. The 'best' models predicted GPP and GPP/PR ratio in channel habitats as a function of DOC; and GPP, PR, and GPP/PR in non-channel floodplain habitats as a function of TN and/or TP. The models explained between 46 and 74 % of the variance in channel habitats and between 17 and 87 % of the variance in non-channel floodplain habitats. Net autotrophy (mean GPP/PR 3.0) of planktonic metabolism in our work supports the prevailing view that wetlands are a net sink for carbon dioxide. We propose a nutrient-DOC framework, combined with hydrological and geomorphological delineations, to better predict and understand the planktonic metabolism in inland floodplain wetlands.en
dc.languageenen
dc.publisherSpringer Japan KKen
dc.relation.ispartofEcological Researchen
dc.titleGross primary productivity of phytoplankton and planktonic respiration in inland floodplain wetlands of southeast Australia: habitat-dependent patterns and regulating processesen
dc.typeJournal Articleen
dc.identifier.doi10.1007/s11284-013-1065-6en
dc.subject.keywordsFreshwater Ecologyen
local.contributor.firstnameTsuyoshien
local.contributor.firstnameTimothyen
local.contributor.firstnameDarrenen
local.contributor.firstnameSimon Jen
local.subject.for2008060204 Freshwater Ecologyen
local.subject.seo2008960506 Ecosystem Assessment and Management of Fresh, Ground and Surface Water Environmentsen
local.profile.schoolOffice of Faculty of Science, Ag, Business and Lawen
local.profile.emaildryder2@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20131220-132118en
local.publisher.placeJapanen
local.format.startpage833en
local.format.endpage843en
local.peerreviewedYesen
local.identifier.volume28en
local.identifier.issue5en
local.title.subtitlehabitat-dependent patterns and regulating processesen
local.contributor.lastnameKobayashien
local.contributor.lastnameRalphen
local.contributor.lastnameRyderen
local.contributor.lastnameHunteren
dc.identifier.staffune-id:dryder2en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:14213en
dc.identifier.academiclevelAcademicen
local.title.maintitleGross primary productivity of phytoplankton and planktonic respiration in inland floodplain wetlands of southeast Australiaen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 204<br />Views: 198<br />Downloads: 2en
local.search.authorKobayashi, Tsuyoshien
local.search.authorRalph, Timothyen
local.search.authorRyder, Darrenen
local.search.authorHunter, Simon Jen
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