Abstract
Various high altitude lakes are found on the inter-Andean plateau of Antofagasta province, Chile. Laguna Lejia is located in a caldera (23°30′S, 67°42′W) at an altitude of 4180 m. Its surface is approximately 1 x 2 km and the water depth is unknown. The water level appears to be maintained by active springs. A delicate algal mat (ca 0.5-1.0 cm thick, Fig. la) is found in the shallow water areas, followed by black anoxic mud (ca 1–5 cm) and below that, coarse volcanic rubble. Isolated flamingoes feed on the algal mats, and insects are common at the shore. The caldera is sparsely vegetated by coiron grass (closely related to Stipa Venusta Phil.),(areas on the distant mountain slopes, Fig. lb). The afternoon westerly breezes generate a white foam on the lake surface, which accumulates on the eastern shore (Fig. lb). This shore is covered by about 50 cm of dried foam and detritus.
Contribution No.1942 from the Institute of Geophysics and Planetary Physics, University of California, Los Angeles.
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© 1980 Australian Academy of Science
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Simoneit, B.R.T., Halpern, H.I., Didyk, B.M. (1980). Lipid Productivity of a High Andean Lake. In: Trudinger, P.A., Walter, M.R., Ralph, B.J. (eds) Biogeochemistry of Ancient and Modern Environments. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-48739-2_21
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