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dc.contributor.authorKpodonu, Alfred Theodore NK
dc.contributor.authorHamilton, David P
dc.contributor.authorHartland, Adam
dc.contributor.authorLaughlin, Daniel C
dc.contributor.authorLusk, Christopher H
dc.date.accessioned2017-05-17T23:23:09Z
dc.date.available2017-05-17T23:23:09Z
dc.date.issued2016
dc.identifier.issn0168-2563
dc.identifier.doi10.1007/s10533-016-0227-3
dc.identifier.urihttp://hdl.handle.net/10072/337256
dc.description.abstractRestoration and management of lake ecosystems require an understanding of natural variability in primary productivity and the factors that drive change. To understand long-term changes in, and relationships amongst phosphorus species and phytoplankton groups, a sediment core was retrieved from Lake Okataina in the central North Island of New Zealand. The core was dated to include a period of approximately 700 years, from pre-human settlement to its current state, close to natural reference conditions. Pigments representing different planktonic groups were measured vertically through the core at 1 cm intervals, as well as phosphorus fractions associated with apatite and CaCO3, Fe and Mn (oxy) hydroxides, Al (oxy) hydroxides and labile phosphorus. Highly significant correlations were established amongst the algal groups and the phosphorus species. Diatoms were strongly correlated with phosphorus fractions associated with permanent burial, while cyanobacteria and green algae were correlated with potentially bioavailable phosphorus. Green algae, cyanobacteria and cryptophytes co-dominated when diatom populations were reduced, and vice versa. Using multiple linear regression, phosphorus fractions could be used to hindcast historical variations in the composition of algal communities (as inferred from pigments), with the exception of alloxanthin (representative of cryptophytes). Our approach provides a technique for a relatively rapid assessment of long-term changes in the major phytoplankton groups in lakes and may be used to infer natural variability in the reference state as well as partitioning the extent of alteration of phytoplankton community composition between human and natural disturbances.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofpagefrom181
dc.relation.ispartofpageto196
dc.relation.ispartofissue1-2
dc.relation.ispartofjournalBiogeochemistry
dc.relation.ispartofvolume129
dc.subject.fieldofresearchOther chemical sciences
dc.subject.fieldofresearchGeochemistry
dc.subject.fieldofresearchEnvironmental management not elsewhere classified
dc.subject.fieldofresearchEnvironmental management
dc.subject.fieldofresearchcode3499
dc.subject.fieldofresearchcode3703
dc.subject.fieldofresearchcode410499
dc.subject.fieldofresearchcode4104
dc.titleCoupled use of sediment phosphorus speciation and pigment composition to infer phytoplankton phenology over 700 years in a deep oligotrophic lake
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s) 2016. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
gro.hasfulltextFull Text
gro.griffith.authorHamilton, David P.


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