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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2012.04303.x
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|a eng
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|a Henneberg, Anders
|e verfasserin
|4 aut
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|a Internal methane transport through Juncus effusus
|b experimental manipulation of morphological barriers to test above- and below-ground diffusion limitation
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|c 2012
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 08.03.2013
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|a Date Revised 31.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2012 The Authors. New Phytologist © 2012 New Phytologist Trust.
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|a Aerenchymatous plants can transport methane (CH(4) ) from the root zone to the atmosphere, bypassing the surface-oxidizing layers of the soil, yet morphological and anatomical factors that govern the transport of methane have rarely been critically tested in manipulative experiments. Here, we investigated the methane transport capacity of hydroponically grown Juncus effusus, in experiments with roots submerged in nutrient solutions sparged with methane (1.16 mmol CH(4) l(-1)). Through a range of manipulations of the above- and below-ground plant parts, we tested the contradictory claims in the literature regarding which sites provide the greatest resistance to gas transport. Root manipulations had the greatest effect on methane transport. Removing root material reduced methane transport significantly, and especially the lateral roots and the root tips were important. Cutting of the shoots, with or without subsequent sealing, did not alter methane transport significantly. We confirm modelling predictions that the limiting factor for methane transport in the tussock forming wetland graminoid, J. effusus, is the amount of permeable root surface, estimated using the proxy measurement of root length. The aerial tissues do not provide any significant resistance to methane transport, and the methane is emitted from the lower 50 mm of the shoots
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Solutions
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|a Methane
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|a Oxygen
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|a Sorrell, Brian K
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|a Brix, Hans
|e verfasserin
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|i Enthalten in
|t The New phytologist
|d 1979
|g 196(2012), 3 vom: 11. Nov., Seite 799-806
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|x 1469-8137
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|g volume:196
|g year:2012
|g number:3
|g day:11
|g month:11
|g pages:799-806
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