Journal ArticleDOI
Floodplain hydrology, acid discharge and change in water quality associated with a drained acid sulfate soil
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A two-year study of the relationship between water chemistry, hydrology and climatology in areas of acid sulfate soils has demonstrated that discharge of sulfuric acid to estuaries is not dependent solely on the magnitude of a rainfall event.Abstract:
A two-year study of the relationships between water chemistry, hydrology and climatology in areas of acid sulfate soils has demonstrated that discharge of sulfuric acid to estuaries is not dependent solely on the magnitude of a rainfall event. Large rain events did not always produce significant changes to water chemistry, and small rain events could produce large changes if the prevailing conditions were suitable. The magnitude of changes to estuarine waters was found to be dependent on the position of the watertable, and therefore the available soil pore space, and the store of acidic water in floodgated drains at the time of rainfall. These results have significance for predicting the discharge of acid drainage to estuarine environments and the possible impacts on aquatic organisms. A water balance equation, which estimated acid discharge to surface waters as high as 317 t of H2SO4 in one month, can be used to predict monthly discharges for rain events of varying magnitude if prevailing weather conditions are known.read more
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Journal ArticleDOI
Is Ocean Acidification an Open-Ocean Syndrome? Understanding Anthropogenic Impacts on Seawater pH
Carlos M. Duarte,Carlos M. Duarte,Iris E. Hendriks,Tommy S. Moore,Ylva S. Olsen,Ylva S. Olsen,Alexandra Steckbauer,Laura Ramajo,Laura Ramajo,Jacob Carstensen,Julie Trotter,Malcolm T. McCulloch +11 more
TL;DR: In this paper, the authors argue that ocean acidification from anthropogenic CO2 emissions is largely an open ocean syndrome and that a concept of anthro- pogenic impacts on marine pH, which is applicable across the entire ocean, from coastal to open-ocean environments, provides a superior framework to consider the multiple components of the anthropogenic perturbation of marine pH trajectories.
Journal ArticleDOI
A global perspective on wetland salinization: ecological consequences of a growing threat to freshwater wetlands
Ellen R. Herbert,Paul I. Boon,Amy J. Burgin,Scott C. Neubauer,Rima B. Franklin,Marcelo Ardón,Kristine N. Hopfensperger,Leon P. M. Lamers,Peter Gell +8 more
TL;DR: Salinization, a widespread threat to the structure and ecological functioning of inland and coastal wetlands, is currently occurring at an unprecedented rate and geographic scale as discussed by the authors, and the causes of salinization are diverse and include alterations to freshwater flows, land-clearance, irrigation, disposal of wastewater effluent, sea level rise, storm surges, and applications of de-icing salts.
Journal ArticleDOI
Sedimentary iron geochemistry in acidic waterways associated with coastal lowland acid sulfate soils
TL;DR: In this paper, the authors examined the solubility, mineralogy and geochemical transformations of sedimentary Fe in waterways associated with coastal lowland acid sulfate soils (CLASS).
Journal ArticleDOI
Emissions of methane and nitrous oxide from Australian sugarcane soils.
O. T. Denmead,Bennett MacDonald,G. Bryant,Travis A Naylor,Stephen R. Wilson,David W. T. Griffith,W. J. Wang,B. Salter,Ian White,P. Moody +9 more
TL;DR: In this paper, the authors measured gas emissions in whole-of-season studies in a burnt-cane crop on an acid sulfate soil (ASS) that was fertilised with 160 kg nitrogen (N) as urea in the south of the sugarcane belt (Site 1), and in a more representative trash-blanketed soil fertilized with 150 kg urea-N-ha −1 in the north (Site 2).
BookDOI
Ecology of Freshwater and Estuarine Wetlands
TL;DR: In this paper, the authors present an overview of the ecology of Freshwater and Estuarine Wetlands: An Introduction What is a Wetland? Why are Wetlands Important? Wetland Loss and Degradation What This Book Covers