Original paper

Physical and chemical characteristics of Lago Rupanco, Osorno, Chile

Donoso, Teresa G.; Phinney, Harry K.

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Archiv für Hydrobiologie Volume 112 Number 3 (1988), p. 351 - 369

23 references

published: May 20, 1988

DOI: 10.1127/archiv-hydrobiol/112/1988/351

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ArtNo. ESP141011203002, Price: 29.00 €

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Abstract

Lago Rupanco is located in the central plain of Chile at 40° 50'S; 72° 30'W. It lies at 117 m above sea level, and corresponds to type 28c of Hutchinson’s (1967) classification. Lago Rupanco is a warm, monomictic lake, with winter circulation and summer stratification. Physical and chemical parameters of this lake were studied during a cycle of 18 months for the first time in 1981—1982. Lago Rupanco has a maximum depth of 160 m. The euphotic zone was sampled and the temperature ranged from 10 to 18 °C with an oxygen content between 9 and 11 mg/l. This lake had small amounts of nitrate— nitrogen and phosphate—phosphorus, as is characteristic of oligotrophic lakes. The relationships between abiotics factors and the phytoplankton standing crop will be discussed in a future paper.

Keywords

Lago Rupanco • Osorno • Chile • nitrate • phosphate