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    Okenone in Bottom Sediments as a Proxy for Changes in the Water Level of a Saline Stratified Lake / D. Y. Rogozin, V. V. Zykov, A. O. Bulkhin, A. G. Degermendzhi // Dokl. Earth Sci. - 2020. - Vol. 493, Is. 1. - P565-568, DOI 10.1134/S1028334X20070168. - Cited References:8. - This work was supported by the Russian Foundation for Basic Research, project no. 19-05-00428. . - ISSN 1028-334X. - ISSN 1531-8354
РУБ Geosciences, Multidisciplinary
Рубрики:
SHIRA
   SIBERIA

   CYCLES

Кл.слова (ненормированные):
okenone -- purple sulfur bacteria -- meromixis -- water level -- stratification -- climate reconstruction
Аннотация: Long-term measurements show that the sedimentation dynamics of okenone (a carotenoid of purple sulfur bacteria) reflects the abundance of purple sulfur bacteria, the hydrogen sulfide content, and the stratification stability in the closed saline meromictic Shira Lake (Southern Siberia, Russia). The profile of fossil okenone in bottom sediments has been compared with the data on the water surface level in the lake over the last 100 years. The peaks of okenone correspond to lake transgressions, and the drops in the okenone content coincide with periods of stable or decreasing water level. Our observations show that fossil okenone may be used as a qualitative proxy of meromictic conditions and as a quantitative proxy of the water level dynamics in closed stratified lakes. Therefore, okenone can be used for qualitative reconstructions of the water balance and climate humidity in arid zones.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Rogozin, D. Y.; Zykov, V. V.; Bulkhin, A. O.; Degermendzhi, A. G.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-05-00428]

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