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dc.contributor.authorKpodonu, Aen_NZ
dc.contributor.authorHamilton, David P.en_NZ
dc.date.accessioned2015-11-10T20:24:18Z
dc.date.available2015en_NZ
dc.date.available2015-11-10T20:24:18Z
dc.date.issued2015en_NZ
dc.identifier.citationKpodonu, A., & Hamilton, D. P. (2015). Paleolimnology to determine lake reference conditions – fact sheet. Hamilton, New Zealand: Lake Ecosystem Restoration New Zealand (LERNZ), University of Waikato.en
dc.identifier.urihttps://hdl.handle.net/10289/9729
dc.description.abstractPaleolimnology is the study of the early history of lakes based on sediment composition. Lake sediments build up in undisturbed areas of lake bottoms (e.g. in deep central basins) over long periods of time. These sediments will reflect the prevailing conditions in the catchment, climate and in-lake processes at the time of deposition. Specific 'markers' can be used to determine when a particular layer of sediment was deposited. For example, in volcanic areas lakes sediments may contain volcanic ash layers from historical eruptions that can be used to date the sediment (Figure 1). Where it is possible to take long sediment cores in relatively undisturbed areas the historical record of the lake may stretch back far enough to give insights into historical climatic conditions and pre-human settlement state of the lake. This pre-human condition is sometimes referred to as a "reference state". Defining the reference state is important as it provides an indication of the extent to which the current state differs from it. This difference provides a useful reference point for setting targets to improve the state of a lake (e.g., as part of the limiting-setting process envisaged under the National Objectives Framework for Freshwater Management 2011).
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherLake Ecosystem Restoration New Zealand (LERNZ), University of Waikatoen_NZ
dc.relation.urihttps://www.lernz.co.nz/tools-and-resources/fact-sheetsen_NZ
dc.titlePaleolimnology to determine lake reference conditions – fact sheeten_NZ
dc.typeOther
pubs.confidentialfalseen_NZ
pubs.elements-id133112
pubs.place-of-publicationHamilton, New Zealanden_NZ


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