Show simple item record

dc.contributor.authorCook, FJ
dc.contributor.authorHick, W
dc.contributor.authorGardner, EA
dc.contributor.authorCarlin, GD
dc.contributor.authorFroggatt, DW
dc.description.abstractDisturbed acid sulphate soils are potent sources of acidity in coastal waterways. Monitoring studies of the drainage water for sites at East Trinity, Cairns and Pimpama, south-east Queensland indicate that considerable acidity is found in the drainage water from these sites. Hydrogen (H+), ferrous (Fe2+) and aluminium (Al) ions are the dominant acid cations involved. When drainage water is mixed with fresh or marine waters the effect of H+ on acidity generation is immediate. Aluminium can release acidity on hydrolysis, while the oxidation of Fe2+ to Fe3+ both acidifies and removes dissolved oxygen from the water. Strongly acidic waters with low levels of dissolved oxygen concentration are undesirable for most forms of aquatic life. Export of acidity from acid sulphate soil is likely to have a major effect on inshore fisheries and breeding grounds especially in periods of flood following drought or periods of low rainfall, where large volumes of acidity can be flushed/leached into sensitive aquatic/marine habitats. Impacts may include low dissolved oxygen, fish kills, epizootic ulceration syndrome and damage to oysters. During the processes of oxidation and hydrolysis, iron and aluminium flocs form, that can smother benthic communities. Heavy metals are found in the drainage water at elevated levels and may also be of concern for aquatic organisms. Chronic effects such as habitat degradation, mortality of marine worms, bivalves, invasion of acid tolerant species (both plant and animal) and avoidance of habitat have been documented elsewhere. These areas require further research.en_US
dc.relation.ispartofjournalMarine Pollution Bulletinen_US
dc.subject.fieldofresearchEnvironmental Sciencesen_US
dc.subject.keywordsScience & Technologyen_US
dc.subject.keywordsLife Sciences & Biomedicineen_US
dc.subject.keywordsMarine & Freshwater Biologyen_US
dc.titleExport of acidity in drainage water from acid sulphate soilsen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dcterms.bibliographicCitationCook, FJ; Hick, W; Gardner, EA; Carlin, GD; Froggatt, DW, Export of acidity in drainage water from acid sulphate soils, Marine Pollution Bulletin, 2000, 41 (7-12), pp. 319-326en_US
gro.hasfulltextNo Full Text
gro.griffith.authorCook, Freeman J.

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record