Show simple item record

dc.contributor.authorGinders, MA
dc.contributor.authorCollier, KJ
dc.contributor.authorDuggan, IC
dc.contributor.authorHamilton, DP
dc.date.accessioned2017-05-12T05:10:03Z
dc.date.available2017-05-12T05:10:03Z
dc.date.issued2016
dc.identifier.issn1535-1459
dc.identifier.doi10.1002/rra.3008
dc.identifier.urihttp://hdl.handle.net/10072/336690
dc.description.abstractWe sampled natural and reconstructed side-arms during different stages of hydrological connectivity with a large floodplain river in northern New Zealand, to determine whether re-establishment of connectivity would be an effective strategy for restoring plankton communities in former side-arms. Connectivity between side-arms and the river was moderated by water level and influenced flow rates and closure of inlets and outlets. Physicochemical conditions were more strongly related to the connectivity phase than to habitat type (river, natural or reconstructed side-arm), except during low connectivity when natural side-arms in particular were characterised by higher ammonium (NH4-N) and total phosphorus (P) concentrations, as well as specific conductivity. Dissolved reactive phosphorus (PO4-P), water temperature, conductivity and dissolved oxygen were identified as explanatory variables of phytoplankton and zooplankton community composition, which along with total nitrogen (phytoplankton) or total suspended solids (zooplankton) explained 44–52% of variation. Phytoplankton community composition and the abundance of several dominant or discriminatory taxa were affected by connectivity but not habitat type, whereas habitat and connectivity both had significant effects on zooplankton communities and abundances of the cladoceran Bosmina meridionalis. Significant interactions between connectivity and paired habitat types occurred for abundances of the diatom Asterionella, the cryptophyte Cryptomonas, the rotifer Synchaeta oblonga and cyclopoid copepods, reflecting differential responses to connectivity among habitats by these taxa. Overall, these results underscore the importance of hydrological connectivity between side-arms and rivers in moderating plankton community composition, and highlight unpredictable trajectories of community development and alternative transient states that can occur soon after side-arm reconnection.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherJohn Wiley & Sons
dc.relation.ispartofpagefrom1675
dc.relation.ispartofpageto1686
dc.relation.ispartofissue8
dc.relation.ispartofjournalRiver Research and Applications
dc.relation.ispartofvolume32
dc.subject.fieldofresearchEnvironmental Science and Management not elsewhere classified
dc.subject.fieldofresearchEnvironmental Science and Management
dc.subject.fieldofresearchEcology
dc.subject.fieldofresearchEnvironmental Engineering
dc.subject.fieldofresearchcode050299
dc.subject.fieldofresearchcode0502
dc.subject.fieldofresearchcode0602
dc.subject.fieldofresearchcode0907
dc.titleInfluence of Hydrological Connectivity on Plankton Communities in Natural and Reconstructed Side-Arms of a Large New Zealand River
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorHamilton, David P.


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record