Distribution of inland wetlands with sulfidic sediments in the Murray–Darling Basin, Australia

Hall, Karina C.; Baldwin, Darren S.; Rees, Gavin N.; Richardson, Adam

doi:10.1016/j.scitotenv.2006.07.019

Cited by 58 publications

(60 citation statements)

References 17 publications

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“…The pH of inland waters can also change as a result of changes in soil chemistry. If sulfidic sediments are present in the soils or wetland margins, drying can result in oxidisation of the sulfidic minerals and generate acid sulfate soils (Hall et al 2006;Baldwin et al 2007). This may be a common problem in some parts of Australia.…”

Section: Water Chemistrymentioning

confidence: 99%

“…This may be a common problem in some parts of Australia. For example, more than 20% of 81 wetlands in the Murray-Darling Basin had sulfidic sediments at levels that could lead to ecological damage (Hall et al 2006). Oxidation of sulfidic sediments can also cause other problems such as anoxia in the overlying water column and mobilisation of metals from the sediments (see Baldwin et al 2007).…”

Section: Water Chemistrymentioning

confidence: 99%

“…Thus, increased drying as a result of climate change, followed by flooding or rewetting may lead to major changes in water chemistry (depleted oxygen, very low pH), resulting in fish kills. Water managers should consider this potential when managing (Baldwin et al 2007) or restoring (Hall et al 2006) water bodies adjacent to acid sulfate soils, because the drying trends projected for the Murray-Darling and south-western Australia will exacerbate the existing problems. Reduced runoff and increased drying in some areas have elevated salinity levels (e.g.…”

Section: Water Chemistrymentioning

confidence: 99%

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Projected climate change in Australian marine and freshwater environments

Hobday

Lough

2011

Mar. Freshwater Res.

261

201

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Abstract. Changes in the physical environment of aquatic systems consistent with climate change have been reported across Australia, with impacts on many marine and freshwater species. The future state of aquatic environments can be estimated by extrapolation of historical trends. However, because the climate is a complex non-linear system, a more process-based approach is probably required, in particular the use of dynamical projections using climate models. Because global climate models operate on spatial scales that typically are too coarse for aquatic biologists, statistical or dynamical downscaling of model output is proposed. Challenges in using climate projections exist; however, projections for some marine and freshwater systems are possible. Higher oceanic temperatures are projected around Australia, particularly for south-eastern Australia. The East Australia Current is projected to transport greater volumes of water southward, whereas the Leeuwin Current on the western coast may weaken. On land, projections suggest that air temperatures will rise and rainfall will decline across much of Australia in coming decades. Together, these changes will result in reduced runoff and hence reduced stream flow and lake storage. Present climate models are particularly limited with regard to coastal and freshwater systems, making the models challenging to use for biological-impact and adaptation studies.

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Section: Water Chemistrymentioning

confidence: 99%

Section: Water Chemistrymentioning

confidence: 99%

Section: Water Chemistrymentioning

confidence: 99%

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Projected climate change in Australian marine and freshwater environments

Hobday

Lough

2011

Mar. Freshwater Res.

261

201

View full text Add to dashboard Cite

show abstract

“…These are likely to exacerbate toxic cyanobacterial blooms (Bowling and Baker 1996; Davis and Koop 2006). Further, ,21% of the lower MDB's wetlands have sulfidic sediments (Hall et al 2006;Baldwin and Fraser 2009) and their recent desiccation has resulted in oxidisation to form sulfuric acid (Kingsford et al 2011). Salinity remains a major and complex problem in the MDB (Jolly et al 2001;Bailey et al 2006).…”

Section: Changes To Water Qualitymentioning

confidence: 99%

Australia's Murray - Darling Basin: freshwater ecosystem conservation options in an era of climate change

Pittock

Finlayson

2011

Mar. Freshwater Res.

194

114

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Abstract. River flows in the Murray-Darling Basin, as in many regions in the world, are vulnerable to climate change, anticipated to exacerbate current, substantial losses of freshwater biodiversity. Additional declines in water quantity and quality will have an adverse impact on existing freshwater ecosystems. We critique current river-management programs, including the proposed 2011 Basin Plan for Australia's Murray-Darling Basin, focusing primarily on implementing environmental flows. River management programs generally ignore other important conservation and adaptation measures, such as strategically located freshwater-protected areas. Whereas most river-basin restoration techniques help build resilience of freshwater ecosystems to climate change impacts, different measures to enhance resilience and reoperate water infrastructure are also required, depending on the degree of disturbance of particular rivers on a spectrum from free-flowing to highly regulated. A crucial step is the conservation of free-flowing river ecosystems where maintenance of ecological processes enhances their capacity to resist climate change impacts, and where adaptation may be maximised. Systematic alteration of the operation of existing water infrastructure may also counter major climate impacts on regulated rivers.

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“…Changes in water column salinity may also substantially influence the composition of the micro-and macro-invertebrate community due to differences in species-specific salinity tolerances. Furthermore, it is considered highly likely that changes in soil salinity (Brock et al, 2005) or soil pH (Hall & Baldwin, 2006) may severely impact the viability of invertebrate seed banks within wetland/floodplain soils. It is also recognised that the viability of invertebrate seed banks decreases with time (Nielsen www.intechopen.com et al, 2007).…”

Section: Prevailing Conditions Of Biotic Assemblages In Changing Largmentioning

confidence: 99%

Management Strategies for Large River Floodplain Lakes Undergoing Rapid Environmental Changes

Kattel¹,

Gell²

2012

International Perspectives on Global Environmental Change

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Distribution of inland wetlands with sulfidic sediments in the Murray–Darling Basin, Australia

Cited by 58 publications

References 17 publications

Projected climate change in Australian marine and freshwater environments

Projected climate change in Australian marine and freshwater environments

Australia's Murray - Darling Basin: freshwater ecosystem conservation options in an era of climate change

Management Strategies for Large River Floodplain Lakes Undergoing Rapid Environmental Changes

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