Chemical and biological studies on some acidic lakes of east Australian sandy coastal lowlands

Bayly I.A. (1964) Chemical and biological studies on some acidic lakes of east Australian sandy coastal lowlands. Marine and Freshwater Research, 15 1: 56-72. doi:10.1071/MF9640056


Author Bayly I.A.
Title Chemical and biological studies on some acidic lakes of east Australian sandy coastal lowlands
Journal name Marine and Freshwater Research   Check publisher's open access policy
ISSN 1323-1650
Publication date 1964-01-01
Sub-type Article (original research)
DOI 10.1071/MF9640056
Volume 15
Issue 1
Start page 56
End page 72
Total pages 17
Subject 1104 Complementary and Alternative Medicine
1105 Dentistry
2303 Ecology
1910 Oceanography
Abstract The chemical composition of the water of 16 lakes, three streams and a swamp were investigated. Most of these were located on coastal islands of southern Queensland which consist entirely of siliceous sand. The majority of these lakes apparently originated by the formation of an impermeable organic layer in dune depressions. Complete major ionic analyses are presented together with data on total ionic concentration, optical density, dissolved organic matter and pH. The cationic and anionic order of dominance were unusual, being Na > Mg z Ca > K and C1 > SO4 > HCO3, respectively. This is explicable on the basis that atmospheric supply of ions from the sea is of major importance and that supply by land-weathering processes is relatively insignificant. With two exceptions the pH of the waters did not exceed 5.3. It is considered that the acidity of those with pH < 5.0 is due mainly to organic acids. Experiments were carried out on the effect of pH on coloured dissolved organic matter. It is pointed out that the colour of dissolved organic matter depends on pH, only if pH is determined mainly by an inorganic influence. Biological observations were restricted mainly to Crustacea and to the calanoid copepod Calamoecia tasmanica in particular. It was the observed coastal distribution of this species that prompted the chemical studies. The distribution and abundance of C. tasmanica is discussed in relation to chemical factors.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 14 Jun 2016, 16:52:40 EST by System User