Saline lakes of the Paroo, inland New South Wales, Australia

Timms, Brian V.

doi:10.1007/bf00018808

Cited by 69 publications

(81 citation statements)

References 24 publications

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“…In our study, zooplankton species richness demonstrated to be negatively related to salinity (Rho = x 0.491, P = 0.015), a pattern that has been widely descripted by previous authors (Timms, 1993;Cooper and Wissel, 2012), since a few number of species are able to tolerate an increase in salt concentration. The presence of the genera Brachionus, Cephalodella and Boeckella in HH and MH lakes is consistent with previous founding, since these genera are greatly adapted to high salt concentrations (Derry et al, 2003;Battauz et al, 2013).…”

Section: Discussion Salinity and Altitude As Controlling Factors Of Psupporting

confidence: 80%

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Controlling factors in planktonic communities over a salinity gradient in high-altitude lakes

Frau

Battauz

Mayora

et al. 2015

Ann. Limnol. - Int. J. Lim.

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-This study aimed to determine the factors affecting plankton structure along a salinity gradient during the summer in high-altitude endorheic lakes in Catamarca Province (Argentina). During the summer 2013, eight lakes located between 3000 and 4300 meters above sea level were sampled in a 6-day period being analysed plankton, limnological variables and flamingo abundance. Principal Component Analysis explained 80% of the system variability, permitting lakes to be ordered by salinity: subhaline (SH), hypohaline (HH) and mesohaline (MH). A total of 101 phytoplankton taxa were registered, having Bacillariophyceae the highest richness (43 species registered). HH lakes were dominated by Bacillariophyceae (between 65 and 100%), while Chlorophyceae and Euglenophyceae were more abundant in SH and MH lakes. Zooplankton was poorly represented in richness (only 21 species were registered). MH lakes were dominated by Copepoda ( > 85% of total abundance) and HH lakes by Rotifera ( > 51% of total abundance). It was not found a clear pattern in SH lakes. The redundancy analysis explained 70.7% of phytoplankton variability and 75.7% of zooplankton variability. Bacillariophyceae presence was associated with availability of dissolved silica (Si), while Euglenophyceae and Chlorophyceae were associated with a higher nitrogen:phosphorus ratio. Cladocera and Copepoda abundance were linked to Euglenophyceae abundance and the area of lakes while Rotifera displayed a positive relation with the concentration of dissolved organic matter. We conclude that both phytoplankton and zooplankton abundance are mainly controlled by Bottom-Up forces including dissolved Si for Bacillariophyceae, and availability of Euglenophyceae for zooplankton while salinity and altitude have an effect on plankton richness distribution.

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Section: Discussion Salinity and Altitude As Controlling Factors Of Psupporting

confidence: 80%

“…In salt lakes where plankton is adapted to high ionic concentrations, factors such as habitat stability, predation and resource availability could be more important in the structuration of this community (Timms, 1993;Cooper and Wissel, 2012).…”

Section: Introductionmentioning

confidence: 99%

Controlling factors in planktonic communities over a salinity gradient in high-altitude lakes

Frau

Battauz

Mayora

et al. 2015

Ann. Limnol. - Int. J. Lim.

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“…Shiel (e.g. Timms, 1993), including lakes of the far southwest coast of Western Australia, where maximum salinity was <3 g L 1 (Edward et ai, 1994). In this survey, richness of the two assemblages that showed most sensitivity to salt tended to be greatest in higher rainfall belts, suggesting that the assertion of Horwitz (1997) that salt sensitive species in the Warren region are most likely to occur along the higher rainfall coast applies at a larger and more general scale to south-west Western Australia as a whole.…”

Section: Salinity and Secondary Salinisationmentioning

confidence: 99%

“…While richness certainly responded to large changes in salinity, so that wetlands with the highest salinities (>100 g Lot) have particularly depauperate communities, most halophiles had broad salinity tolerances and subgroupings of the highly heterogeneous communities in more moderately saline wetlands were not obviously related to salinity per se. Timms (1993) and Williams (1981) also noted that many salt lake species occurred across broad ranges of salinity and that, while salinity was important, it was not sufficient by itself to explain much of the variation in salt lake communities. This idea was expanded upon by Williams et al (1990), who found a strong relationship between salinity and aquatic invertebrate community composition in wetlands when the full salinity spectrum was considered, but suggested that other (unidentified) biotic and abiotic variables were likely to be as important, or more important, within narrower ranges of salinity.…”

Section: Salinity and Secondary Salinisationmentioning

confidence: 99%

Aquatic invertebrate assemblages of wetlands and rivers in the wheatbelt region of Western Australia

Pinder¹,

Halse²,

McRae³

et al. 2004

Rec West Aust Mus Sup

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-A biological survey of wetlands in the Wheatbelt and adjacent coastal areas of south-west Western Australia was undertaken to document the extent and distribution of the region's aquatic invertebrate diversity. Two hundred and thirty samples were collected from 223 wetlands, including freshwater swamps and lakes, salinised wetlands, springs, rivers, artificial wetlands (farm dams and small reservoirs), saline playas and coastal salt lakes between 1997 and 2000. The number of aquatic invertebrates identified from the region has been increased five-fold to almost 1000 species, of which 10% are new and known to date only from the Wheatbelt, and another 7% (mostly rotifers and cladocerans) are recorded in Western Australia for the first time. The survey has provided further evidence of a significant radiation of microcrustaceans in south-west Western Australia. Comparison of the fauna with other regions suggests that saline playas and ephemeral pools on granite outcrop support most of the species likely to be restricted to the Wheatbelt. Most species were collected infrequently, but for many of the least common species the Wheatbelt is likely to be on the periphery of their range.Cluster analysis was used to identify 10 assemblages of species with similar patterns of occurrence. Richness of these assemblages was best predicted by salinity and climate variables, or by physical habitat characteristics (granite outcrop pools, flowing water), although the amount of variation explained by models was variable (RZ 0.36 to 0.79). Fourteen groups of wetlands were recognised from cluster analysis of sites based on community composition. Wetlands of these groups differed primarily in their physical habitat, salinity, degree of secondary salinisation, pH and their occurrence across geographic and climatic gradients. Some assemblages were closely associated with particular wetland groups but others occurred across a range of wetland types. Salinity was identified as the primary influence on the occurrence of aquatic invertebrates in the Wheatbelt, although other variables are important in particular situations.Secondary salinisation dramatically alters composition and richness of freshwater aquatic invertebrate communities, involving gradual replacement of salt sensitive species by a smaller set of salt tolerant and halophilic species as salinity increases. These altered communities are relatively homogeneous compared with those of freshwater or naturally saline wetlands. Communities of naturally saline wetlands are comprised of a heterogeneous array of halophilic species, but these communities and species are also threatened by altered hydrology and chemistry associated with dryland salinity.

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“…In this sense, ordination analysis identified a group of tolerant species (i. e. Berosus hispanicus, Rhantus suturalis and Sigara stagnalis), typical of habitats with high conductivity or salinity values (Arnold & Ormerod, 1997;Garrido & Munilla, 2008; www.intechopen.com Hansen, 1987;Martinoy et al, 2006). Different authors have identified salinity as the most important factor regulating species composition (Britton & Johnson, 1987;Cognetti & Maltagliati, 2000;Martinoy et al, 2006;Timms, 1993). Thus, the two samples with higher salinities (Vixán in spring and summer of 1998) appear separated from the rest of the samples of 1998 (Figure 7).…”

Section: Discussionmentioning

confidence: 94%