Groundwater Ostracods from the arid Pilbara region of northwestern Australia: distribution and water chemistry

Reeves, Jessica; Halse, Stuart

doi:10.1007/978-1-4020-6418-0_9

Cited by 9 publications

(12 citation statements)

References 25 publications

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“…In addition, some elements of the evolution of the subterranean fauna have been addressed using both morphological and molecular methods (Taiti & Humphreys, 2001;Cooper et al, 2002Cooper et al, , 2007Cooper et al, , 2008Leys et al, 2003;Guzik et al, 2008;Leys & Watts, 2008). The diverse stygofauna of the Pilbara region, on the Western Shield north of the Yilgarn, is summarised by Eberhard et al (2005), but published works to date (Karanovic & Marmonier, 2002Karanovic, 2003Karanovic, , 2005Karanovic, , 2007Karanovic, 2006;Finston et al, 2004Finston et al, , 2007Reeves et al, 2007) do not specifically address the calcrete-related issues discussed herein, except for some (Poore & Humphreys, 1998;Humphreys, 1999bHumphreys, , 2001Eberhard et al, 2005: review).…”

Section: Fauna and Endemicitymentioning

confidence: 97%

“…This focus has been applied to groundwater/salt lake research to great effect, particularly using ostracods as palaeoclimate indicators (Radke, 2000;Radke et al, 2003). It is notable that candonine ostracods are mostly absent in the more saline waters of the Yilgarn, but extraordinarily diverse in the freshwater calcretes of the Pilbara region (Humphreys, 2001(Humphreys, , 2008aKaranovic, 2003;Karanovic & Marmonier, 2003;Reeves et al, 2007). Williams et al (1990) argued that once a salt lake species solves the physiological problem of osmoregulatory stress, it is able to occupy a wide salinity range, and that chance [stochasticity] is probably an important factor in the colonization of inland saline waters from where biological interactions-prior occupancy (competition), predation and parasitism-will determine their persistence.…”

Section: Salinity and Fauna Distributionmentioning

confidence: 98%

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Groundwater estuaries of salt lakes: buried pools of endemic biodiversity on the western plateau, Australia

et al. 2009

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Subterranean or groundwater estuaries occur in porous and cavernous substrates where groundwater abuts the ocean. Like surface estuaries, they are strongly stratified, temporally and hydrochemically heterogeneous environments that support complex hydrogeochemical and biological processes and ecological communities. Here, we contend that groundwater estuaries also occur where groundwater flow approaches salt lakes and provide evidence in the context of groundwater (valley or phreatic) calcretes in palaeovalleys of the arid western plateau of Australia. The calcrete groundwater estuaries display marked and complex physico-chemical gradients along, across and through the groundwater flow path.From the first principles and the density differences between water bodies, we may expect the form and dynamics of the saltwater front to mimic that of marine estuaries but with the dynamic and temporal response to changing hydrology heavily dampened, and driven by the episodic groundwater recharge and lake filling typical of arid regions. The calcrete aquifers support diverse biological communities of obligate groundwater animals, largely endemic to a given calcrete body. These communities comprise both macro and microinvertebrates, predominantly a suite of crustacean higher taxa, and a great diversity of diving beetles (Dytiscidae) isolated in the calcrete aquifers between ca. 5 and 8 million years ago.

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Section: Fauna and Endemicitymentioning

confidence: 97%

Section: Salinity and Fauna Distributionmentioning

confidence: 98%

Groundwater estuaries of salt lakes: buried pools of endemic biodiversity on the western plateau, Australia

et al. 2009

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“…Tolerant species are not affected by even high fluctuations, but less tolerant species will be eliminated or will be forced to move to suitable (or special) habitats. Groundwater species in Australia were found to be most affected by the redox potential among all environmental variables that were analyzed (Reeves et al 2007). Species in those locations were mostly abundant in oxidized sites, but rare in reducing environments associated with low levels of pH and Eh.…”

Section: Discussionmentioning

confidence: 99%

“…During the present study, we also found similar correlation from different aquatic habitats where conductivity values tend to be lower with increasing altitude (Appendix 2 in supplementary material). According to Reeves et al (2007), while species were limited to the middle elevations, altitude was the most influential environmental factor on the groundwater ostracods at the genus level between lowland and upland ([300 m) sites in the Pilbara region of northwestern Australia. The authors underlined the fact that altitude plays an important role on the secondary factors such as temperature, depth of water and salinity, as well as ostracod occurrence.…”

Section: Discussionmentioning

confidence: 99%

Distribution, ecological tolerance and optimum levels of freshwater Ostracoda (Crustacea) from Diyarbakır, Turkey

2011

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A total of 23 ostracod taxa were found in 48 of 90 different water bodies (wetlands, springs, lakes, creeks, etc.) located at moderate to high elevation (530-1,095 m) in Diyarbakır province. The ecological tolerances and optimum values for environmental variables of 15 species were analyzed. Accordingly, maximum numbers of species were found between 700 and 800 m. Ostracod species and sampling sites along with seven environmental variables were ordinated with canonical correspondence analysis (CCA). The first axis of CCA explained 72% of the relationship between species and environmental variables. Of these, water temperature, redox potential and altitude were the most influential (P \ 0.05) factors for species. Based on habitat similarities, an unweighted pair group mean average dendrogram divided species into four clustering groups. Among the species, Potamocypris arcuata, Candona neglecta and Psychrodromus fontinalis had the highest optimum estimates for altitude, whereas P. arcuata, Herpetocypris brevicaudata and P. fontinalis exhibited the highest tolerances to altitude. While most species revealed unique tolerances and optimum values for different ecological variables, species with cosmopolitan characteristics had wider ranges of ecological tolerances and distribution amid the variety of habitats along elevational gradients.

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“…Entire samples were preserved in 100% ethanol. A large number of water chemistry parameters was measured (Eberhard et al, 2004;Reeves et al, 2007). Ostracods were separated under Leica MZ3-12 binocular microscopes in DEC's (Department of Environment and Conservation) laboratory by Mike Scanlon, Jim Cocking, and Harley Barron and transferred into 70% alcohol.…”

Section: Methodsmentioning

confidence: 99%

Four new species of Gomphodella De Deckker, with a phylogenetic analysis and a key to the living representatives of the subfamily Timiriaseviinae (Ostracoda)

Karanovic

2009

Crustac

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Four new species of Gomphodella De Deckker, 1981 are described in the present paper, thereby doubling the number of known recent species. All new species were collected in subterranean waters of the Pilbara region in Western Australia. Gomphodella belongs to the subfamily Timiriaseviinae and the genus is endemic to Australia. In order to facilitate identification of the recent Timiriaseviinae, a key to all species is presented. Only three of the 52 species recognized were not included in the key, due to a lack of distinguishing characters. In addition, Cytheridella chariessa Rome, 1977 is herein synonymized with C. damasi Klie, 1944. Cladistic analysis is also used to show phylogenetic relationships between the species of Gomphodella and the genera of the Timiriaseviinae. The first analysis included eight known Gomphodella species and two outgroup taxa, i.e., representatives of the genus Gomphocythere described from Australia and New Zealand. This analysis was based on 19 morphological characters, and resulted in seven equally parsimonious trees, 36 steps long, with consistency and retention indices of 0.56. The second analysis included all 52 recognized species of Timiriaseviinae and was based on 29 morphological characters. It resulted in 31 equally parsimonious trees with a length of 31 steps, a consistency index of 0.76 and a retention index of 0.94. The majority rule trees are presented herein. As a result of the second analysis, the genus Thaicythere Savatenalinton, Borgonie & Martens, 2008 is synonymized with Metacypris Brady & Robertson, 1870. RÉSUMÉQuatre espèces nouvelles de Gomphodella De Deckker, 1981 sont décrites dans ce travail, doublant ainsi le nombre d'espèces récentes connues. Toutes ces nouvelles espèces ont été collectées dans les eaux souterraines de la région de Pilbara en Australie Occidentale. Gomphodella appartient à la sous-famille des Timiriaseviinae et le genre est endémique en Australie. Afin de faciliter l'identification des Timiriaseviinae récents, une clé de toutes les espèces est présentée. Seuls, trois des 52 espèces reconnues n'ont pas été incluses dans la clé, par manque de caractères distinctifs. De plus, Cytheridella chariessa Rome, 1977 est ici mis en synonymie avec C. damasi Klie, 1944.

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Groundwater Ostracods from the arid Pilbara region of northwestern Australia: distribution and water chemistry

Cited by 9 publications

References 25 publications

Groundwater estuaries of salt lakes: buried pools of endemic biodiversity on the western plateau, Australia

Groundwater estuaries of salt lakes: buried pools of endemic biodiversity on the western plateau, Australia

Distribution, ecological tolerance and optimum levels of freshwater Ostracoda (Crustacea) from Diyarbakır, Turkey

Four new species of Gomphodella De Deckker, with a phylogenetic analysis and a key to the living representatives of the subfamily Timiriaseviinae (Ostracoda)

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