Water chemistry of lakes from the Antarctic ...

• Main Authors: Torii, Tetsuya, Matsumoto, Genki I, Nakaya, Shyu
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1988
• Subjects: Sampling lake; Ice drill; Antarc*; Antarctic
• Online Access: https://dx.doi.org/10.1594/pangaea.763088; https://doi.pangaea.de/10.1594/PANGAEA.763088

This paper reviews Japanese limnological studies mainly in the McMurdo and Syowa oases, with special emphasis on the nutrient distribution. Generally, the chemical composition of the major ionic components in the coastal lakes and ponds is similar to that in seawater, while that in inland Dry Valley lakes and ponds of the McMurdo Oasis is abundant in calcium, magnesium and sulfate ions. The former can be explained by the direct influences of sea salts, while the latter is mainly attributable to the accumulation of atmospheric salts.Most saline lakes are meromictic. Dissolved oxygen concentrations in the upper layers are saturated or supersaturated, but the bottom layers are anoxic and often hydrogen sulfide occurs. The concentrations of nutrients vary largely not only among the lakes but also with depth. Silicate-Si, which is generally abundant in all freshwater and saline lakes, may be due to erosions of soils and rocks. Nitrite-N concentrations in both freshwater and saline lakes are generally low. ... : Supplement to: Torii, Tetsuya; Matsumoto, Genki I; Nakaya, Shyu (1988): 3.3 The chemical characteristics of Antarctic lakes and ponds, with special emphasis on the distribution of nutrients. Polarforschung, 58(2/3), 219-230 ...