Conductivity and the concentration of total dissolved soilds in Australian lakes

1966 ◽  
Vol 17 (2) ◽  
pp. 169 ◽  
Author(s):  
WD Williams
Keyword(s):  
Saline Lakes ◽  
Total Dissolved Solids ◽  
Specific Conductance ◽  
Dissolved Solids ◽  
Wide Range ◽  
Lake Waters ◽  
The Relationship

The relationship between specific conductance and concentration of total dissolved solids was investigated in 62 samples from Australian lakes over a wide range of concentration of total dissolved solids (from 0.5 to >200‰). A high correlation was found particularly in highly saline lakes. This suggests that with much greater confidence than elsewhere conductivity determinations may be used in Australia as an indication of the amounts of total dissolved solids in lake waters over a wide range of concentration.

Faunal assemblages of some saline lakes near Marchagee, Western Australia

1981 ◽  
Vol 32 (1) ◽  
pp. 133 ◽  
Author(s):  
SA Halse
Keyword(s):  
Western Australia ◽  
Saline Lakes ◽  
Salt Lake ◽  
Total Dissolved Solids ◽  
Dissolved Solids ◽  
Faunal Assemblages ◽  
Invertebrate Species ◽  
Solids Concentration ◽  
Eastern Australia

Five saline lakes near Marchagee. with salinities ranging from 10-71‰, were sampled every two months between March and September 1979. The lakes contained faunal assemblages of 6-13 invertebrate species; only two species were common to all lakes. Fish (Pseudogobius olorum) were found in one salt lake. Austrochiltonia subtenuis was recorded at a salinity of 71‰ twice the salinity it was previously thought to tolerate. Pseudogobius olorum was collected at a salinity of 55‰ and is the second species of fish to be collected from highly saline Australian lakes. Mytilocypris mytiloides was collected at a total dissolved solids concentration of 45‰ a much higher level of salinity than it tolerates in eastern Australia. Necterosoma pensillatus was found at a salinity of 10.5‰ the lowest yet recorded for the species.

scholarly journals A systematic examination of the relationships between CDOM and DOC in inland waters in China

2017 ◽  
Vol 21 (10) ◽  
pp. 5127-5141 ◽  
Author(s):  
Kaishan Song ◽  
Ying Zhao ◽  
Zhidan Wen ◽  
Chong Fang ◽  
Yingxin Shang
Keyword(s):  
Organic Matter ◽  
Saline Lakes ◽  
Arid Regions ◽  
Vital Role ◽  
Inland Waters ◽  
River Waters ◽  
Remotely Sensed Imagery ◽  
Lake Waters ◽  
The Relationship

Abstract. Chromophoric dissolved organic matter (CDOM) plays a vital role in the biogeochemical cycle in aquatic ecosystems. The relationship between CDOM and dissolved organic carbon (DOC) has been investigated, and this significant relationship lays the foundation for the estimation of DOC using remotely sensed imagery data. The current study examined samples from freshwater lakes, saline lakes, rivers and streams, urban water bodies, and ice-covered lakes in China for tracking the variation of the relationships between DOC and CDOM. The regression model slopes for DOC vs. aCDOM (275) ranged from extremely low 0.33 (highly saline lakes) to 1.03 (urban waters) and 3.01 (river waters). The low values were observed in saline lake waters and waters from semi-arid or arid regions, where strong photobleaching is expected due to less cloud cover, longer water residence time, and daylight hours. In contrast, high values were found in waters developed in wetlands or forest in Northeast China, where more organic matter was transported from catchment to waters. The study also demonstrated that closer relationships between CDOM and DOC were revealed when aCDOM (275) were sorted by the ratio of aCDOM(250)∕aCDOM (365), which is a measure for the CDOM absorption with respect to its composition, and the determination of coefficient of the regression models ranged from 0.79 to 0.98 for different groups of waters. Our results indicate the relationships between CDOM and DOC are variable for different inland waters; thus, models for DOC estimation through linking with CDOM absorption need to be tailored according to water types.

Relationship Between Nutrients, Dominant Ions, and Phytoplankton Standing Crop in Prairie Saline Lakes

1985 ◽  
Vol 42 (10) ◽  
pp. 1588-1594 ◽  
Author(s):  
J. F. H. Bierhuizen ◽  
E. E. Prepas
Keyword(s):  
Standing Crop ◽  
Saline Lakes ◽  
Ionic Composition ◽  
Total Dissolved Solids ◽  
Ion Concentration ◽  
Freshwater Lakes ◽  
Empirical Relationships ◽  
Dissolved Solids ◽  
Chl A ◽  
Significant Relationships

We collected data from 20 saline lakes (total dissolved solids from 1000 to 91 000 mg∙L−1) in southeastern Alberta to compare relationships between phosphorus, nitrogen, and phytoplankton standing crop with those in freshwater lakes. In 18 lakes, Na+, Mg2+, SO42−, and HCO3−-CO32− were the dominant ions. In these lakes there was a significant positive correlation between Ca2+ and chlorophyll a (Chl a), and there were significant negative correlations between Chl a and conductivity, pH, Na+, Mg2+, SO42−, HCO3−, and CO32−. When all 20 lakes were considered there were no significant relationships between Chl a and phosphorus or nitrogen. Empirical relationships for freshwater lakes, based on spring or summer total phosphorus (TP) or total nitrogen (TN), overestimated Chl a in all the study lakes. However, in saline lakes with similar ionic composition and TN to TP ratios greater than 12 (by weight), there was a significant positive relationship between TP and Chl a. For the saline lakes with TN to TP ratios greater than 12, the deviations between the Chl a levels predicted from models developed for freshwater lakes and the observed levels were positively correlated with conductivity, total dissolved solids, and Na+ (r2 = 0.78–0.82, P < 0.001). We developed the first empirical model that describes nutrient – Chl a relationships for inland saline lakes. The deviation of measured phytoplankton biomass from that predicted by models developed for freshwater lakes can be explained by conductivity or dominant ion concentration.

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