Aquatic Macrophyte Methane Fluxes: How Important are Plant Species and Diel Patterns for Overall Emissions?
Abstract
Methane (CH4) emissions via emergent aquatic macrophytes in wetlands or other aquatic ecosystems contribute large amounts of CH4 to the atmosphere. Quantifying these emissions are seen as challenging because of large temporal and inter-species variability. Strong diel patterns that appear different among species have been found and patterns appear linked to how gas transport through plants are regulated. However, some recent work with detailed repeated measurements of diel patterns over whole seasons also show similar integrated 24h fluxes per m2 among species and suggest that root zone CH4 levels can be more important than plant species and their gas transport mechanisms for total CH4 emissions. This presentation revisit recent findings and ask the question "How important are really the species composition and diel flux patterns for overall plant mediated fluxes?", which is fundamental for large scale modelling of these types of methane emissions.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.B33A..02B
- Keywords:
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- 0365 Troposphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 0428 Carbon cycling;
- BIOGEOSCIENCESDE: 0475 Permafrost;
- cryosphere;
- and high-latitude processes;
- BIOGEOSCIENCESDE: 0497 Wetlands;
- BIOGEOSCIENCES