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dc.contributor.authorKnight, Jon
dc.contributor.authorEslami-Andargoli, Leila
dc.contributor.authorDale, Pat
dc.contributor.authorFry, Brian
dc.date.accessioned2017-06-01T03:10:45Z
dc.date.available2017-06-01T03:10:45Z
dc.date.issued2017
dc.identifier.issn0749-0208
dc.identifier.doi10.2112/JCOASTRES-D-15-00245.1
dc.identifier.urihttp://hdl.handle.net/10072/337844
dc.description.abstractThe aim was to review ecosystem state changes and the role of palaeo-ecological tools with application to intertidal subtropical and tropical intertidal wetlands. These systems are especially vulnerable to stress from sea-level change, climate change, and development activities. Responses to stress can lead to significant state changes with the system passing thresholds, potentially beyond recovery. Indicators of state changes and approaching tipping points include a critical slowing down following perturbation signalled by, for example, slowing recovery rates, increased attribute variance, and changed skewness. To identify such changes, data are needed for the relevant variables such as vegetation, sea level, and sediment processes so as to observe the indicative changes and their timing. Because changes may be relatively slow in ecological terms, very long-term data are needed to inform management about future likely states or thresholds so that mitigation or adaptation can be planned. One approach is to use palaeo-ecological data. These data are relatively scarce in tropical intertidal systems. This paper reviews a range of palaeo-indicators. These include state indicators (pollen, foraminifera, and diatoms), stable isotope analysis, and stratigraphy and temporal indicators involving sediment dating. Each is potentially useful, although there are uncertainties related to, for example, the redistribution organic matter in sediment cores. In conclusion, it is recommended that integrating or combining several indicators can assist in triangulating results, thereby increasing confidence in their interpretation. It is also suggested that data, if available, can be retrofitted to assess at least some of the state change indicators, such as data variance and skewness.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherCoastal Education & Research Foundation
dc.relation.ispartofpagefrom208
dc.relation.ispartofpageto217
dc.relation.ispartofissue1
dc.relation.ispartofjournalJournal of Coastal Research
dc.relation.ispartofvolume33
dc.subject.fieldofresearchGeomorphology and Regolith and Landscape Evolution
dc.subject.fieldofresearchEarth Sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode040601
dc.subject.fieldofresearchcode04
dc.subject.fieldofresearchcode09
dc.titleState Changes in Tropical Intertidal Systems: A Palaeo Ecological Approach
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dc.description.versionPublished
gro.facultyGriffith Sciences, Griffith School of Environment
gro.rights.copyright© 2017 CERF. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
gro.hasfulltextFull Text
gro.griffith.authorDale, Patricia E.
gro.griffith.authorKnight, Jon M.
gro.griffith.authorEslami-Andargoli, Leila
gro.griffith.authorFry, Brian D.


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