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Methane Emissions from a Grassland-Wetland Complex in the Southern Peruvian Andes

1
School of Geosciences, University of Edinburgh, Edinburgh EH8 9XP, UK
2
INRA, UMR 1391 ISPA, 33140 Villenave d’Ornon, France
3
Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen AB24 3UU, UK
4
Instituto de Ciencias de la Naturaleza, Territorio y Energias Renovables, Pontificia Universidad Catolica del Peru, Lima 15088, Peru
5
Research School of Biology, Australian National University, Acton ACT 2601, Australia
*
Author to whom correspondence should be addressed.
Soil Syst. 2019, 3(1), 2; https://doi.org/10.3390/soilsystems3010002
Received: 4 November 2018 / Revised: 7 December 2018 / Accepted: 24 December 2018 / Published: 28 December 2018
(This article belongs to the Special Issue Formation and Fluxes of Soil Trace Gases)
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Abstract

Wet organic-rich mineral and peat soils in the tropical Andes represent a potentially significant, but little studied, source of methane to the atmosphere. Here we report the results of field and laboratory measurements of soil–atmosphere methane exchange and associated environmental variables from freely draining upland and inundation prone wetland soils in a humid puna ecosystem in the Southeastern Andes of Peru. Between seasons and across the landscape soil–atmosphere exchange varied between uptake and emission. Notable hotspots of methane emission, peaking during the wet season, were observed from both upland and wetland soils with particularly strong emissions from moss-accumulating topographic lows. This variability was best explained by the influence of oxygen concentration on methane production in superficial soil horizons. View Full-Text
Keywords: soil; methanogenesis; methanotrophy; upland; peatland; puna soil; methanogenesis; methanotrophy; upland; peatland; puna
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Jones, S.P.; Diem, T.; Arn Teh, Y.; Salinas, N.; Reay, D.S.; Meir, P. Methane Emissions from a Grassland-Wetland Complex in the Southern Peruvian Andes. Soil Syst. 2019, 3, 2.

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