Methane Efflux from Lake Sediments Through Water Lilies

  title={Methane Efflux from Lake Sediments Through Water Lilies},
  author={John William Dacey and Michael J. Klug},
  pages={1253 - 1255}
During winter, when water lilies have no surface leaves, the gases in the rhizome lacunae approach equilibrium with the gases of the sediment water. The resulting increase of internal pressure is manifested by the sustained streams of bubbles (up to 37 percent methane and 6 percent carbon dioxide) that escape when emerging leaves are torn in the spring. Methane continues to enter the roots and rhizome during summer, rapidly moves up the petioles, and passes out through the emergent leaves into… 
Internal winds in water lilies: an adaptation for life in anaerobic sediments.
  • J. Dacey
  • Environmental Science
  • 1980
The network of internal gas spaces in the yellow water lily constitutes a pressurized flow-through system which forces oxygen to the roots and rhizome buried in the anaerobic sediment. By the purely
Methane efflux from the pelagic regions of four lakes
Methane emission to the atmosphere was studied in the deepest, central (pelagic) regions of one freshwater and three meromictic, alkaline saline lakes. The range of methane emissions was 0.004 to
Biological methanogenesis and the CO2 greenhouse effect
It is well established that plants tend to increase net photosynthesis under increased carbon dioxide. It is also well established that a large fraction of atmospheric methane is produced by
The ventilation system operating in two different subspecies of N. luteum growing in Alaska and in Massachusetts is found, finding that during certain times of the year the leaves are warmed not only by the sun in daylight but also by lake water at night, allowing the ventilation to continue during darkness.
Biological Formation and Consumption of Methane
  • D. Boone
  • Environmental Science, Biology
  • 1993
This chapter describes the conditions that leading to biogenic methane formation in natural environments, the metabolic pathways and interactions that lead to methanogenesis, and the implications of these factors on the biogeochemistry of methane.
Physiological Ecology of Methanogens
Biological methanogenesis plays a major role in the carbon cycle on Earth. Methanogenesis is the terminal step in carbon flow in many anaerobic habitats, including marine and freshwater sediments,
Carbon Gas Fluxes in Re-Established Wetlands on Organic Soils Differ Relative to Plant Community and Hydrology
We measured CO2 and CH4 fluxes for 6 years following permanent flooding of an agriculturally managed organic soil at two water depths (~25 and ~55 cm standing water) in the Sacramento–San Joaquin
Nitrification‐denitrification at the plant root‐sediment interface in wetlands
Oxygen transport through the air spaces (aerenchyma tissue) of the stem and roots of aquatic macrophytes into the root zone supports nitrification of NH,+, with the NOJ- formed diffusing into the


Methane has been detected as a constituent of the internal atmosphere of EZodea canadensis and Myriophykm exalbescens growing in ponds with organic substrates. The gas apparently diffuses from the
Methane cycling in a eutrophic shield lake and its effects on whole lake metabolism 1
The methane cycle of an artificially eutrophic shield lake is considered by relating in situ rates of production to rates of oxidation and evasion. Methane production rates f’or oxygenated and anoxic
Gaseous emissions of mercury from an aquatic vascular plant
RECENT studies have demonstrated the emission of mercury to the atmosphere from a variety of sources including contaminated industrial waste beds1–4. Investigations have also shown that vascular
Kalamazoo County, Mich., is a eutrophic kettle lake with a maximum depth of 3.8 m and a mean depth of 2.0 m [M
  • Michigan State University
  • 1972
We have also found CH4 in Nymphaea odorata, Brasenia schreberi, Ceratophyllum demersum, Polygonum sp., and Typha sp. We sampled the gases by syringe directly from plants in situ
  • ibid. 22,
  • 1977
Most of the CH4 dissolved in the water column is oxidized by bacteria in the interface between
    State of Minnesota Special Allocation for Cystic Fibrosis Research and the Cystic Fibrosis Foundation. We thank W. J. Warwick and N. J. Laible for assistance