Title

Biogeochemical and Physical Controls on Methane Fluxes from Two Ferruginous Meromictic Lakes

Document Type

Article

Publication Date

10-8-2019

Publication Title

Geobiology

First page number:

1

Last page number:

16

Abstract

Meromictic lakes with anoxic bottom waters often have active methane cycles whereby methane is generally produced biogenically under anoxic conditions and oxidized in oxic surface waters prior to reaching the atmosphere. Lakes that contain dissolved ferrous iron in their deep waters (i.e., ferruginous) are rare, but valuable, as geochemical analogues of the conditions that dominated the Earth's oceans during the Precambrian when interactions between the iron and methane cycles could have shaped the greenhouse regulation of the planet's climate. Here, we explored controls on the methane fluxes from Brownie Lake and Canyon Lake, two ferruginous meromictic lakes that contain similar concentrations (max...) (see full abstract in article).

Keywords

Ferruginous; Lakes; Meromictic; Methane flux

Disciplines

Atmospheric Sciences | Bacteriology | Biogeochemistry | Fresh Water Studies

Language

English

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