Meromixis in hypersaline Mono Lake, California. 3. Biogeochemical response to stratification and overturn

Limnology and Oceanography
By: , and 

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Abstract

Mono Lake is a terminal, saline lake that became ectogenically meromictic in 1982–1983 and remained stratified until November 1988. During this period, the monimolimnion remained anoxic and nearly isothermal, while the upper mixolimnion was well oxygenated and exhibited a seasonal thermal regime. Dissolved sulfide and methane increased in the monimolimnion as a result of diffusive flux from the sediments. Winter mixing down to the chemocline distributed sulfide and methane throughout the mixolimnion. Lakewide inventories of dissolved sulfide and methane reflected the balance between increased concentrations and decreased monimolimnion volume over time. At overturn, the entire water column was isothermal and anoxic. Dissolved sulfide (380 × 106 mol) was oxidized in 1 week by molecular oxygen. Methane (12 × 106 mol) was removed more slowly by microbial oxidation and ventilation across the air‐water interface.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Meromixis in hypersaline Mono Lake, California. 3. Biogeochemical response to stratification and overturn
Series title Limnology and Oceanography
DOI 10.4319/lo.1993.38.5.1040
Volume 38
Issue 5
Year Published 1993
Language English
Publisher Wiley
Contributing office(s) Toxic Substances Hydrology Program
Description 12 p.
First page 1040
Last page 1051
Country United States
State California
Other Geospatial Mono Lake