NDLI: Roles of moss species and habitat in methane consumption potential in a northern peatland

Content Provider	Springer Nature Link
Author	Basiliko, Nathan Knowles, Roger Moore, Tim R.
Copyright Year	2004
Abstract	In northern peatlands with water tables at or near the surface, the Sphagnum moss layer is potentially the only aerobie region where CH$_{4}$ oxidation can occur. We hypothesized that mosses with varying physiologies would create different conditions for methane-oxidizing bacteria and, in turn, affect rates of CH$_{4}$ consumption. We measured in-vitro CH$_{4}$ consumption potential of Sphagnum magellanicum and Sphagnum capillifolium taken from the same habitat and S. magellanicum and Sphagnum majus across habitats to compare and contrast species and environmental effects. In certain cases, S. capillifolium consumed CH$_{4}$ more rapidly than S. magellanicum taken from identical habitats, although the greatest difference in consumption rates between species was only 29 μg CH$_{4}$ g$^{−1}$ dry moss d$^{−1}$, compared to a maximum difference of 126 and 415 μg CH$_{4}$ g$^{−1}$ dry moss d$^{−1}$ in S. magellanicum and S. majus sampled from different habitats. In most cases, CH$_{4}$ was consumed most rapidly in the lower, non-photosynthetic portions of the Sphagnum mosses, and consumption potential increased with an increase in the concentration of CH$_{4}$ in the habitat. We hypothesize that CH$_{4}$ consumption occurred internally, likely in the hyaline cells, as external surface sterilization did not significantly alter CH$_{4}$ consumption rates. This work provides evidence that different Sphagnum moss species have variable ability to oxidize CH$_{4}$, although inter-species differences are small compared to differences across habitats.
Starting Page	178
Ending Page	185
Page Count	8
File Format	PDF
ISSN	02775212
Journal	Wetlands
Volume Number	24
Issue Number	1
e-ISSN	19436246
Language	English
Publisher	Springer Netherlands
Publisher Date	2004-01-01
Publisher Institution	Society of Wetland Scientists
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	methane methane consumption peatlands Sphagnum Freshwater & Marine Ecology Environmental Management Ecology Hydrogeology Coastal Sciences Landscape Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Environmental Chemistry

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