17. On the chemistry and biota of some saline lakes in Western Australia

Geddes, Mike; Deckker, Patrick De; Williams, W. D.; Morton, D. W.; Topping, Milton S.

doi:10.1007/bf00048717

Cited by 68 publications

(18 citation statements)

References 21 publications

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“…The spatial organization of the ponds in the salinas and of their different depths, necessary for the salt production process, favors a high degree of spatial heterogeneity and very productive microenvironments that are attractive to many primary and secondary consumers (Evagelopoulos et al 2008;Hamdi et al 2008). Such conditions are tolerated by aquatic communities with complex cycles and interspecific relationships and by species which are highly specialized for life in this environment (Geddes et al 1981;Williams 1993;Forbes and Cyrus 1993;Marín and d'Ayala 1996). Fish, mollusks, and annelids are characteristic of the less saline ponds, whereas crustaceans such as Artemia salina thrive in places with high salt concentrations (Masero et al 1999;López et al 2004).…”

Section: Introductionmentioning

confidence: 93%

Selection of ecological indicators for the conservation, management and monitoring of Mediterranean coastal salinas

López

Aguilera

Schmitz

et al. 2009

Environ Monit Assess

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Salinas systems are artificial wetlands which are interesting from the viewpoint of nature conservation. They play an important role both as habitats for migratory waterbird species and as nodes of biotic connectivity networks. In the Mediterranean basin, where the coastal salinas are highly significant as alternative and complementary habitats for waterbirds, a process of abandonment occurs, and many seminatural systems of this kind are disappearing. This abandonment is having serious consequences for migratory bird populations and for the ecological role these play. In the present paper, this group of waterbird species has been used to evaluate these wetlands for conservation purposes. We have developed a methodological approach for the selection of ecological indicators for the conservation and management of these Mediterranean habitats and waterbird assemblages, the main consumers therein. The stepwise procedure developed constitutes a practical tool for this task. Application thereof enabled us to differentiate the habitats available for the waterbirds and to identify the biotic and abiotic indicators for the maintenance and management of the salina ecosystems. These variables can then be incorporated into monitoring programs.

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Section: Introductionmentioning

confidence: 93%

Selection of ecological indicators for the conservation, management and monitoring of Mediterranean coastal salinas

López

Aguilera

Schmitz

et al. 2009

Environ Monit Assess

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“…The spatial arrangement of evaporators in the salt marshes and their different depths are necessary for the salt-production process, which favours high spatial heterogeneity and productive microenvironments (Evagelopoulos et al 2008;Hamdi et al 2008). These I II III I II III I II III Chlorophyceae conditions developed by the saline environment are tolerated by aquatic communities through complex life cycles and interspecific relationships of species that can adapt and develop in these harsh environments (Geddes et al 1981;Forbes and Cyrus 1993;Williams 1993;López et al 2010). The variation analysis in the composition of phytoplankton communities showed that the relative importance of two dominant groups, classes Bacillariophyceae and Cyanobacteria, differs among the evaporators depending on the salinity.…”

Section: Discussionmentioning

confidence: 99%

Diversity partitioning of a phytoplankton community in semiarid salterns

Costa

Molozzi

Hepp

et al. 2016

Mar. Freshwater Res.

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Salterns consist of a series of interconnected evaporators that form sectors in the salterns. Their operation generates an increasing saline gradient, which influences species diversity. The present study was conducted in three salterns, with the goal of evaluating the diversity partitioning of phytoplankton along the saline gradient. We identified 65 taxa; the species richness was similar among the salterns, with higher values occurring in initial sectors and a downward trend with increasing salinity. In the partitioning analysis, the a diversity contributed 33.8% of the total diversity. The diversity variance showed a strong reduction from the a to b1 (33.8À6.3%). At higher scales, the highest species richness was found between salt marshes; however, there was lower diversity and a decrease in similarity from the lower to the higher scale. Therefore, we demonstrated that the greater variance in phytoplankton richness was at higher scales.

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“…Diatom diversity in small playa lakes been established (Schlichting 1960;Schlichting and Sides 1969;Sides 1973; Wuthrich and Matthey 1980) but not thoroughly examined in Australia. Nonetheless, the abundance of waterbirds and invertebrates associated with playas in Australia (Geddes et al 1981;Halse et al 1994;Roshier et al 2002;Cale et al 2004;Pinder et al 2005) provides a range of potential dispersal mechanisms. An additional 20% of variance in the environmental data was related to the concentration of SiO 2 .…”

Section: Discussionmentioning

confidence: 99%

Distribution of modern diatom assemblages among small playas

et al. 2008

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Diatom diversity of six small playa lakes within the Yarra Yarra drainage system, Western Australia, and the environmental variables likely to influence their distribution was investigated. Thirty-one pennate diatom taxa were identified. Taxa consisted of facultative planktonic and periphytic, circumneutral to alkaliphilous or pH-indifferent forms with known adaptations to saline conditions and fluctuations in salinity in NaCl dominated waters. Data were analysed by ordination (MDS and PCA), hierarchical clustering (CLUSTER), permutation-based hypothesis testing (ANOSIM) and comparative tests on similarity matrices (RELATE). Water depth accounted for the majority of variation in the environmental data. REALTE comparisons of environmental and taxa data did not produce a significant correlation value. We propose that the poor concurrence of the datasets was influenced by the wide ecological tolerances of the taxa recorded, some crucial unmeasured environmental variable/s, possible geographical regionalisation and/or unsampled taxa variability owing to the stochastic nature of the wetlands. Broad patterns of distribution were related to hydroperiod and some taxa groups were loosely associated with environmental groups consistent with established ecological tolerances for the taxa.

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17. On the chemistry and biota of some saline lakes in Western Australia

Cited by 68 publications

References 21 publications

Selection of ecological indicators for the conservation, management and monitoring of Mediterranean coastal salinas

Selection of ecological indicators for the conservation, management and monitoring of Mediterranean coastal salinas

Diversity partitioning of a phytoplankton community in semiarid salterns

Distribution of modern diatom assemblages among small playas

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