Relationship between diatoms and water quality (TN, TP) in sub-tropical east Australian estuaries

Logan, Brendan; Taffs, Kathryn H

doi:10.1007/s10933-013-9708-8

Cited by 23 publications

(21 citation statements)

References 49 publications

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“…The ecological ramifications of a compositional shift in diatoms is difficult to define, however, because of their rapid generation time (days to hours), evidence of a shift in diatom composition may be a precursor for subsequent changes in ecological integrity, e.g. trophic bottle necks and cyanobacteria blooms (Desrosiers et al, 2013;Logan and Taffs, 2013;Snoeijs, 2013). The latter can be determined by the inclusion of the chloroplast 16S rRNA gene in subsequent studies.…”

Section: Relationships Between Biological Composition and Environmentmentioning

confidence: 99%

Metabarcoding of benthic eukaryote communities predicts the ecological condition of estuaries

Chariton

Stephenson

Morgan

et al. 2015

Environmental Pollution

132

126

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Section: Relationships Between Biological Composition and Environmentmentioning

confidence: 99%

Metabarcoding of benthic eukaryote communities predicts the ecological condition of estuaries

Chariton

Stephenson

Morgan

et al. 2015

Environmental Pollution

132

126

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“…These characteristics facilitate rapid responses to shifts in environmental change and high-resolution sampling in sediment cores. Transfer functions, developed from modern calibration data sets, have been established for numerous aquatic variables in both estuarine (Logan and Taffs, 2013;Tibby and Taffs, 2011) and lacustrine settings. Variables include conductivity and salinity (Barr, 2010;Barr et al, 2014;Gell, 1997;Saunders et al, 2007Saunders et al, , 2008Saunders, 2011), pH (Tibby et al, 2003), and nutrients (Logan and Taffs, 2013;Tibby, 2004).…”

Section: Diatomsmentioning

confidence: 99%

“…Transfer functions, developed from modern calibration data sets, have been established for numerous aquatic variables in both estuarine (Logan and Taffs, 2013;Tibby and Taffs, 2011) and lacustrine settings. Variables include conductivity and salinity (Barr, 2010;Barr et al, 2014;Gell, 1997;Saunders et al, 2007Saunders et al, , 2008Saunders, 2011), pH (Tibby et al, 2003), and nutrients (Logan and Taffs, 2013;Tibby, 2004). Detailed studies on short timescales have examined pre-European baselines and anthropogenic impact since European settlement in the 19th century through pH (Taffs et al, 2008), salinity, and nutrient (Saunders et al, 2008) reconstructions.…”

Section: Diatomsmentioning

confidence: 99%

Low-resolution Australasian palaeoclimate records of the last 2000 years

et al. 2017

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Abstract. Non-annually resolved palaeoclimate records in the Australasian region were compiled to facilitate investigations of decadal to centennial climate variability over the past 2000 years. A total of 675 lake and wetland, geomorphic, marine, and speleothem records were identified. The majority of records are located near population centres in southeast Australia, in New Zealand, and across the maritime continent, and there are few records from the arid regions of central and western Australia. Each record was assessed against a set of a priori criteria based on temporal resolution, record length, dating methods, and confidence in the proxy-climate relationship over the Common Era. A subset of 22 records met the criteria and were endorsed for subsequent analyses. Chronological uncertainty was the primary reason why records did not meet the selection criteria. New chronologies based on Bayesian techniques were constructed for the high-quality subset to ensure a consistent approach to age modelling and quantification of age uncertainties. The primary reasons for differences between published and reconstructed age-depth models were the consideration of the non-singular distribution of ages in calibrated 14 C dates and the use of estimated autocorrelation between sampled depths as a constraint for changes in accumulation rate. Existing proxies and reconstruction techniques that successfully capture climate variability in the region show potential to address spatial gaps and expand the range of climate variables covering the last 2000 years in the Australasian region. Future palaeoclimate research and records in Australasia could be greatly improved through three main actions: (i) greater data availability through the public archiving of published records; (ii) thorough characterisation of proxy-climate relationships through site monitoring and climate sensitivity tests; and (iii) improvement of chronologies through coretop dating, inclusion of tephra layers where possible, and increased date density during the Common Era.

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“…However, research in Australia has predominantly been focused in temperate zones (Blinn et al, 2004;Gell et al, 2005;Newall & Walsh, 2005;Newall et al, 2006;Haynes et al, 2011). Limited studies in sub-tropical regions have concentrated on paleolimnological studies (Parr et al, 2004;Taffs et al, 2008;Logan et al, 2010;Tibby & Taffs, 2011;Logan & Taffs, 2013), or on the estuarine environment (Townsend & Gell, 2005;Logan et al, 2010;Tibby & Taffs, 2011;Logan & Taffs, 2013), with comparatively negligible research effort on freshwater lotic systems (Lake, 1995;Blinn & Bailey, 2001;Mosisch et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Are diatoms a reliable and valuable bio-indicator to assess sub-tropical river ecosystem health?

Oeding

Taffs

2015

Hydrobiologia

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The use of diatoms as bio-indicators of water quality is common in temperate regions worldwide. However, less attention has been accorded to sub-tropical regions, particularly in Australia. This study assessed the value of diatom communities to infer water quality in a sub-tropical riverine system. Epilithic diatom and water samples were collected monthly from an east Australian river. Principal components analysis showed that the Lower Catchment sites were more strongly influenced by the measured environmental variables differentiating them from the Upper Catchment sites. Canonical Correspondence Analysis showed electrical conductivity and total phosphorus strongly influenced the diatom community distribution. The study revealed diatom species that are robust bio-indicators of water quality in this sub-tropical catchment. Cocconeis placentula, C. placentula var lineata, Gomphonema spec 2 and Tabellaria flocculosa were identified as indicators of moderate water quality. Bacillaria paradoxa, Navicula cryptocephala, Navicula mutica var mutica and Achnanthes fogedii were identified as indicators of poor water quality. This study identified that diatoms are effective indicators of water quality. Further research is required to develop a diatom biological index applicable to sub-tropical east Australian river systems to improve the effectiveness of environmental monitoring and sustainable river management.Keywords Australia Á Diatom index Á Bio-indicator Á River management Á Water quality Handling editor: Judit Padisák Electronic supplementary material The online version of this article (

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Relationship between diatoms and water quality (TN, TP) in sub-tropical east Australian estuaries

Cited by 23 publications

References 49 publications

Metabarcoding of benthic eukaryote communities predicts the ecological condition of estuaries

Metabarcoding of benthic eukaryote communities predicts the ecological condition of estuaries

Low-resolution Australasian palaeoclimate records of the last 2000 years

Are diatoms a reliable and valuable bio-indicator to assess sub-tropical river ecosystem health?

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