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| Bhullar, Gurbir S.; Iravani, Majid; Edwards, Peter J.; Olde Venterink, Harry. |
| Background: The important greenhouse gas (GHG) methane is produced naturally in anaerobic wetland soils. By affecting the production, oxidation and transport of methane to the atmosphere, plants have a major influence upon the quantities emitted by wetlands. Different species and functional plant groups have been shown to affect these processes differently, but our knowledge about how these effects are influenced by abiotic factors such as water regime and temperature remains limited. Here we present a mesocosm experiment comparing eight plant species for their effects on internal transport and overall emissions of methane under contrasting hydrological conditions. To quantify how much methane was transported internally through plants (the chimney... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry; Air and water emissions; Soil. |
| Ano: 2013 |
URL: http://orgprints.org/25304/1/bhullar-etal-2013-BMC_Ecology-13-32-p1-9.pdf |
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| Bhullar, Gurbir S.; Edwards, Peter J.; Olde Venterink, Harry. |
| Aims and Methods Vascular plants are known to influence the production, transport and oxidation of methane in wetland soils, but these processes are not well understood. Using plants grown in intact peat cores, we compared the influence upon methane emissions of 20 forb and graminoid species from European wetlands. We measured plant-mediated transport of methane (conduit or chimney effect) using a novel agar-sealing technique that prevented methane exchange from the bare soil to the atmosphere. Important Findings The plant-mediated transport (chimney effect) represented between 30% and almost 100% of the total methane flux, with graminoids exhibiting greater internal transport than forbs. In general, plants with less dense root tissues and a relatively... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry; Air and water emissions. |
| Ano: 2013 |
URL: http://orgprints.org/25305/1/bhullar-etal-2013-JournalofPlantEcology-6-4-p298-304.pdf |
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