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The role of methane in internal carbon cycling in Lake Mendota during summer stratification
Author(s) -
Fallon R. D.,
Harrits S.,
Hanson R. S.,
Brock T. D.
Publication year - 1980
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1980.25.2.0357
Subject(s) - methane , thermocline , stratification (seeds) , hypolimnion , anaerobic oxidation of methane , environmental science , sedimentation , environmental chemistry , cycling , carbon cycle , oceanography , nutrient , ecology , chemistry , geology , eutrophication , biology , sediment , ecosystem , botany , paleontology , geography , seed dormancy , germination , dormancy , archaeology
The rate of methane formation and evasion was estimated during summer stratification from methane profiles and the rate of methane oxidation measured with 14 CH 4 . Organic carbon sedimentation was measured with sedimentation traps. For the deep‐water sediments of Lake Mendota, about 54% of the organic carbon sedimented returns as methane. Methane oxidation at the thermocline is a much more significant process in Lake Mendota than in Lake 227 during summer stratification, apparently because of the higher eddy diffusivity in Lake Mendota, with concomitant transfer of oxygen and nutrients to the zone where methane oxidation occurs.