Primary production control of methane emission from wetlands

Whiting, Gary J.; Chanton, Jeffrey P.

doi:10.1038/364794a0

Cited by 699 publications

(477 citation statements)

References 32 publications

Supporting

Mentioning

435

Contrasting

Unclassified

Order By: Relevance

“…Drawdown periods accounted for about 14 % of the total CH 4 emission, and 93 % of total N 2 O emission in 2010, whereas, the flood periods was 86 % and 7 %, respectively. Previous studies have suggested that about 3 % to 4 % of net ecosystem production (NEP) is emitted back to the atmosphere as CH 4 (Whiting and Chanton 1993;Bellisario et al 1999). In this study, however, CH 4 emissions during drawdown periods were relatively low and accounted for less than 1 % of the annual carbon assimilation, which was consistent with Askaer et al (2011).…”

Section: Ch 4 and N 2 O Emissions During Drawdown Periodssupporting

confidence: 77%

Plant-mediated methane and nitrous oxide fluxes from a carex meadow in Poyang Lake during drawdown periods

Cai

Yao

et al. 2015

Plant Soil

View full text Add to dashboard Cite

Aims Plants have been suggested to have significant effects on methane (CH 4 ) and nitrous oxide (N 2 O) fluxes from littoral wetlands, but it remains unclear in subtropical lakes. Methods We conducted in situ measurement of CH 4 and N 2 O fluxes for two years. To distinguish between the effects of shoots and roots, three treatments (i.e., intact plants as control, shoot clipping, and root exclusion) were used. Effects of plant biomass, temperature, and soil moisture on CH 4 and N 2 O fluxes were analyzed. Results The mean ecosystem CH 4 emission rate was 36 μg CH 4 m −2 h −1 for drying periods, but 8219 μg CH 4 m −2 h −1 for drying-wetting transition periods. CH 4 fluxes were positively correlated with below-ground and total biomass, but not with above-ground biomass. Clipping did not significantly alter CH 4 flux rate, but root exclusion decreased the CH 4 flux by 116 % as compared to the control. N 2 O emissions were similar for both the drying and drying-wetting transition periods, with a mean rate of 20 μg N 2 O m −2 h −1 . Both clipping and root exclusion significantly increased N 2 O fluxes as compared to the control. Conclusions There was no significant correlation between CH 4 and N 2 O fluxes. Roots dominated plantmediated enhancement in CH 4 fluxes, but played almost an equal role as shoots in plant-regulated suppression on N 2 O fluxes in this Carex meadow during drawdown periods.

show abstract

Section: Ch 4 and N 2 O Emissions During Drawdown Periodssupporting

confidence: 77%

Plant-mediated methane and nitrous oxide fluxes from a carex meadow in Poyang Lake during drawdown periods

Cai

Yao

et al. 2015

Plant Soil

View full text Add to dashboard Cite

show abstract

“…It has been estimated that wetlands contribute 40-50% of global methane (CH4) emissions (Whiting and Chanton, 1993). This is due to the persistence of anaerobic conditions within saturated ground, which are highly favourable for the production of both CH4 and relatively smaller quantities of nitrous oxide (N2O) (Audet et al, 2013).…”

Section: Perspective On Mitigating Green House Gas Emissionsmentioning

confidence: 99%

Instream and riparian implications of weed cutting in a chalk river

Old

Naden

Rameshwaran

et al. 2014

Ecological Engineering

View full text Add to dashboard Cite

were monitored at a site on the River Lambourn (The CEH River Lambourn Observatory) and major instream and riparian impacts were observed. Measurements clearly demonstrated how weed cutting enhanced flood flow conveyance, reduced water levels (river and wetland), increased river velocities, and mobilised suspended sediment (with associated chemicals) and reduced the capacity for its retention within the river channel. Potential implications in relation to flood risk, water resources, downstream water quality, instream and riparian ecology, amenity value of the river, and wetland greenhouse gas emissions were considered. Provided the major influence of macrophytes on instream and riparian environments is fully understood then the manipulation of macrophytes represents an effective management tool that demonstrates the great potential of working with nature.

show abstract

“…With increases in CO 2 and temperature, and the associated increases in wetland productivity, CH 4 fluxes would be expected to increase (7,12). However, SO 4 2Ϫ deposition (from industrial combustion) has the potential to divert substrate flow away from methanogenesis and thereby inhibit CH 4 flux to the atmosphere (Fig.…”

Section: Sulfur Wetlands and Methanementioning

confidence: 99%

Playing scales in the methane cycle: From microbial ecology to the globe

Schimel

2004

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

Primary production control of methane emission from wetlands

Cited by 699 publications

References 32 publications

Plant-mediated methane and nitrous oxide fluxes from a carex meadow in Poyang Lake during drawdown periods

Plant-mediated methane and nitrous oxide fluxes from a carex meadow in Poyang Lake during drawdown periods

Instream and riparian implications of weed cutting in a chalk river

Playing scales in the methane cycle: From microbial ecology to the globe

Contact Info

Product

Resources

About