Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/79624
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dc.contributor.authorBarr, C.en
dc.contributor.authorTibby, J.en
dc.contributor.authorMarshall, J.en
dc.contributor.authorMcGregor, G.en
dc.contributor.authorMoss, P.en
dc.contributor.authorHalverson, G.en
dc.contributor.authorFluin, J.en
dc.date.issued2013en
dc.identifier.citationFreshwater Biology, 2013; 58(8):1614-1630en
dc.identifier.issn0046-5070en
dc.identifier.issn1365-2427en
dc.identifier.urihttp://hdl.handle.net/2440/79624-
dc.description.abstractSummary: 1.Human-induced environmental change threatens freshwater ecosystems, and knowing how these systems have responded to past variability can inform management decisions. Palaeoenvironmental reconstructions provide insight, although their low temporal resolution may mask short-term responses. Hence, a combination of short-term, high-resolution contemporary data and long-term, low-resolution palaeoenvironmental data can offer greater understanding of system behaviour. 2. We demonstrate this approach by examining the response of a lake on North Stradbroke Island, Australia, to environmental change, by investigating hydrological and water quality variation at different temporal scales. The data include daily lake discharge, monthly water quality, modelled annual lake discharge over a 117-year period and comparisons of aerial photographs and lake bathymetry over the past 65 years. A palaeoenvironmental reconstruction of the last c. 7500 years used pollen, stable isotopes, macrofossils and diatoms to provide a long-term perspective. 3. Despite variability in regional climate over recent decades, the depth and water chemistry of Blue Lake displayed little variation. At millennial timescales, there is clear evidence of catchment change in response to a marked shift in climate around 4500 years ago. However, diatom analysis indicates that Blue Lake has exhibited exceptional stability and resistance to change, compared to other Australian Holocene lake records. This suggests that Blue Lake has been an important climate refuge for aquatic biota in the past and, with appropriate management, should continue in this capacity into the future. 4. This study highlights the benefits of a combined, multi-temporal approach to inform understanding of the structure and function of freshwater ecosystems and their responses to environmental change. Such scientific understanding of system requirements is critical to achieving sustainable management objectives.en
dc.description.statementofresponsibilityCameron Barr, John Tibby, Jonathan C. Marshall, Glenn B. McGregor, Patrick T. Moss, Galen P. Halverson and Jennie Fluinen
dc.language.isoenen
dc.publisherBlackwell Publishing Ltden
dc.rights© 2013 John Wiley & Sons Ltd and State of Queenslanden
dc.subjectGround water; lake resistance; palaeoecology; temporal scale; water resource planningen
dc.titleCombining monitoring, models and palaeolimnology to assess ecosystem response to environmental change at monthly to millennial timescales: the stability of Blue Lake, North Stradbroke Island, Australiaen
dc.typeJournal articleen
dc.identifier.doi10.1111/fwb.12154en
dc.relation.granthttp://purl.org/au-research/grants/arc/LP0990124en
pubs.publication-statusPublisheden
dc.identifier.orcidBarr, C. [0000-0003-0436-8702]en
dc.identifier.orcidTibby, J. [0000-0002-5897-2932]en
Appears in Collections:Environment Institute publications
Geography, Environment and Population publications

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