Against the tide: the freshening of naturally saline coastal lakes, southeastern South Australia

Haynes, Deborah; Gell, Peter; Tibby, John; Hancock, Gary; Goonan, Peter

doi:10.1007/s10750-007-0802-7

Cited by 19 publications

(10 citation statements)

References 25 publications

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“…The most common and widespread taxa (Table 4) are considered cosmopolitan species, characteristic of brackish, coastal and marine water bodies (Witkowski et al 2000) and have been identified in previous Australian coastal diatom studies (e.g. Fluin et al 2007;Haynes et al 2007;Saunders et al 2007;Taffs et al 2008). Table 3 for site codes and water chemistry information This study demonstrated that diatom assemblages in southeast Australian coastal lakes, lagoons and estuaries are primarily influenced by salinity.…”

Section: Discussionmentioning

confidence: 58%

A diatom dataset and diatom-salinity inference model for southeast Australian estuaries and coastal lakes

Saunders

2010

J Paleolimnol

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To quantify the relationship between diatom species assemblages and the water chemistry of southeast Australian estuaries and coastal lakes, a new dataset of 81 modern diatom samples and water chemistry data was created. Three hundred and ninetynine species from 53 genera were identified in 36 samples from 32 coastal water bodies in eastern Tasmania and 45 samples from 13 coastal water bodies in southern Victoria. Multivariate statistical analyses revealed that the sampling sites were primarily distributed along salinity and nutrient gradients, and that salinity, nitrate ? nitrite, phosphate and turbidity explained independent portions of variance in the diatom data. Species salinity optima and tolerances were determined and a diatom-salinity inference model (WAinv r 2 = 0.72, r 2 jack = 0.58, RMSEP = 0.09 log ppt) was developed. This new information on diatom species' salinity preferences provides a useful tool for quantitatively reconstructing salinity changes over time from diatom microfossils preserved in the sediments of a range of estuaries and coastal lakes in southeast Australia. This is valuable for studies investigating long-term human impacts and climate change in the region.

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Section: Discussionmentioning

confidence: 58%

A diatom dataset and diatom-salinity inference model for southeast Australian estuaries and coastal lakes

Saunders

2010

J Paleolimnol

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“…Palaeoecological techniques have been less widely used in estuaries due to their complex and dynamic nature. However, palaeoecological studies are becoming more frequent (e.g., Byrne et al 2001;Clarke et al 2003;Ellegaard et al 2006;Garcia-Rodriguez 2006;Haynes et al 2007;Plater et al 2000;Ryves et al 2004;Saunders et al 2007Saunders et al , 2008Taffs et al 2008;Weckström 2006;Zong et al 2006). Some of these studies have provided direct management information by addressing long term human impacts such as nutrient enrichment (e.g., Ellegaard et al 2006), the impacts of land use change (e.g., Taffs 2008) and changes in salinity (e.g., Garcia-Rodriguez 2006; Ryves et al 2004).…”

Section: Palaeoecological Techniques and Their Value To Estuarine Manmentioning

confidence: 99%

“…Through the use of careful site selection (Taffs et al 2008) and multiple indicators (Saunders et al 2008), these studies demonstrate how the potential limitations of palaeoecological studies in estuarine environments can be overcome and how they can be tailored on a site-by-site basis to address different management questions. It should be noted that both of these studies are single core studies and if possible, multiple cores should be collected and analysed (Haynes et al 2007;Reavie and Baratono 2007;Cooper et al 2004). Nevertheless, these studies have contributed valuable management information for these estuaries.…”

Section: Both Of These Case Studies Provide Benchmark Conditions In Tmentioning

confidence: 99%

Palaeoecology: A tool to improve the management of Australian estuaries

Saunders

Taffs

2009

Journal of Environmental Management

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“…With the present paper, one more species is added to the genus. 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 1959, Foged 1978, John 1983,1993, Gell & Gasse 1994, Hodgson 1995, Vyverman et al 1995, Hodgson et al 1997, Haynes et al 2007, Taukulis & John 2009 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 …”

Section: Resultsmentioning

confidence: 99%

“…Cleve presents morphological features that conform to the genus Envekadea. Stauroneis pachycephala was described in 1881 from Baakens River, Port Elizabeth, South Africa and has subsequently been reported in Australia (Foged 1978, John 1983, 1993, Gell & Gasse 1994, Hodgson 1995, Vyverman et al 1995, Hodgson et al 1997, Haynes et al 2007, Taukulis & John 2009), New Zealand (Foged 1979, Sweden (Cleve-Euler 1953), Sri Lanka, Cuba, and Papua New Guinea (Foged 1976, 1984, Vyverman 1991. In the present paper, we provide morphological, ecological, and biogeographical analyses of Stauroneis pachycephala based on new collections from Victoria (Australia), Florida (USA), Louisiana (USA) and compare these with type material from South Africa.…”

Section: Introductionmentioning

confidence: 99%

Morphology, ecology and biogeography ofStauroneis pachycephalaP.T. Cleve (Bacillariophyta) and its transfer to the genusEnvekadea

et al. 2014

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Stauroneis pachycephala was described in 1881 from the Baakens River, Port Elizabeth, South Africa. Recently, it was found during surveys of the MacKenzie River (Victoria, Australia), the Florida Everglades (USA), and coastal marshes of Louisiana (USA). The morphology, ecology and geographic distribution of this species are examined in the present paper. This naviculoid species is characterised by lanceolate valves with a gibbous centre, a sigmoid raphe, an axial area narrowing toward the valve ends, and capitate valve apices. The central area is a distinct stauros that is slightly widened near the valve margin. The raphe is straight and filiform, and the terminal raphe fissures are strongly deflected in opposite directions. Striae are fine and radiate in the middle of the valve, becoming parallel and eventually convergent toward the valve ends. The external surface of the frustule and copulae is smooth and lacks ornamentation. We also examined the type material of Stauroneis pachycephala. Our observations show this species has morphological characteristics that fit within the genus Envekadea. Therefore, the transfer of Stauroneis pachycephala to the genus Envekadea is proposed and a lectotype is designated.

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Against the tide: the freshening of naturally saline coastal lakes, southeastern South Australia

Cited by 19 publications

References 25 publications

A diatom dataset and diatom-salinity inference model for southeast Australian estuaries and coastal lakes

A diatom dataset and diatom-salinity inference model for southeast Australian estuaries and coastal lakes

Palaeoecology: A tool to improve the management of Australian estuaries

Morphology, ecology and biogeography ofStauroneis pachycephalaP.T. Cleve (Bacillariophyta) and its transfer to the genusEnvekadea

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