Methods to assess high-resolution subsurface gas concentrations and gas fluxes in wetland ecosystems

Bo Elberling, Michael Kühl, Ronnie N. Glud, Christian Juncher Jørgensen, Louise Askaer, Lars F. Rickelt, Hans P. Joensen, Morten Larsen, Lars Liengaard

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

Abstract

The need for measurements of soil gas concentrations and surface fluxes of greenhouse gases at high temporal and spatial resolution in wetland ecosystem has lead to the introduction of several new analytical techniques and methods. In addition to the automated flux chamber methodology for high-resolution estimates of greenhouse gas fluxes across the soil-atmosphere interface, these high-resolution methods include microsensors for quantification of spatiotemporal concentration dynamics in O2 and N2O at micrometer scales, fiber-optic optodes for long-term continuous point measurements of O2 concentrations, and planar optodes for high-resolution two-dimensional measurements of O2 and pH. This chapter summarizes the principles behind the methods and shows examples of new insights obtained using combinations of these different methods in a Danish fresh-water wetland system. The results highlight that wetland and peat soils are highly heterogeneous, containing a mosaic of dynamic macropore systems created by both macrofauna and flora leading to distinct spatial and temporal variations in gas concentration on a scale of millimeters and minutes. Applications of these new methodologies allow measurements of greenhouse gas dynamics in wetlands on a scale at which the underlying processes are regulated by microenvironmental controls.
Original languageEnglish
Title of host publicationMethods in Biogeochemistry of Wetlands : Methods of Soil Analysis
EditorsR. D. DeLaune, K. R. Reddy, C. J. Richardson, J. P. Megonigal
Volume10
Place of PublicationMadison, Wisconsin, USA
PublisherSoil Science Society of America Book Series
Publication date2013
Pages949-970
ISBN (Print)978-0-89118-960-2
Publication statusPublished - 2013

Cite this

Elberling, B., Kühl, M., Glud, R. N., Jørgensen, C. J., Askaer, L., Rickelt, L. F., ... Liengaard, L. (2013). Methods to assess high-resolution subsurface gas concentrations and gas fluxes in wetland ecosystems. In R. D. DeLaune, K. R. Reddy, C. J. Richardson, & J. P. Megonigal (Eds.), Methods in Biogeochemistry of Wetlands: Methods of Soil Analysis (Vol. 10, pp. 949-970). Madison, Wisconsin, USA: Soil Science Society of America Book Series.
Elberling, Bo ; Kühl, Michael ; Glud, Ronnie N. ; Jørgensen, Christian Juncher ; Askaer, Louise ; Rickelt, Lars F. ; Joensen, Hans P. ; Larsen, Morten ; Liengaard, Lars. / Methods to assess high-resolution subsurface gas concentrations and gas fluxes in wetland ecosystems. Methods in Biogeochemistry of Wetlands: Methods of Soil Analysis. editor / R. D. DeLaune ; K. R. Reddy ; C. J. Richardson ; J. P. Megonigal. Vol. 10 Madison, Wisconsin, USA : Soil Science Society of America Book Series, 2013. pp. 949-970
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abstract = "The need for measurements of soil gas concentrations and surface fluxes of greenhouse gases at high temporal and spatial resolution in wetland ecosystem has lead to the introduction of several new analytical techniques and methods. In addition to the automated flux chamber methodology for high-resolution estimates of greenhouse gas fluxes across the soil-atmosphere interface, these high-resolution methods include microsensors for quantification of spatiotemporal concentration dynamics in O2 and N2O at micrometer scales, fiber-optic optodes for long-term continuous point measurements of O2 concentrations, and planar optodes for high-resolution two-dimensional measurements of O2 and pH. This chapter summarizes the principles behind the methods and shows examples of new insights obtained using combinations of these different methods in a Danish fresh-water wetland system. The results highlight that wetland and peat soils are highly heterogeneous, containing a mosaic of dynamic macropore systems created by both macrofauna and flora leading to distinct spatial and temporal variations in gas concentration on a scale of millimeters and minutes. Applications of these new methodologies allow measurements of greenhouse gas dynamics in wetlands on a scale at which the underlying processes are regulated by microenvironmental controls.",
author = "Bo Elberling and Michael K{\"u}hl and Glud, {Ronnie N.} and J{\o}rgensen, {Christian Juncher} and Louise Askaer and Rickelt, {Lars F.} and Joensen, {Hans P.} and Morten Larsen and Lars Liengaard",
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Elberling, B, Kühl, M, Glud, RN, Jørgensen, CJ, Askaer, L, Rickelt, LF, Joensen, HP, Larsen, M & Liengaard, L 2013, Methods to assess high-resolution subsurface gas concentrations and gas fluxes in wetland ecosystems. in RD DeLaune, KR Reddy, CJ Richardson & JP Megonigal (eds), Methods in Biogeochemistry of Wetlands: Methods of Soil Analysis. vol. 10, Soil Science Society of America Book Series, Madison, Wisconsin, USA, pp. 949-970.

Methods to assess high-resolution subsurface gas concentrations and gas fluxes in wetland ecosystems. / Elberling, Bo; Kühl, Michael ; Glud, Ronnie N.; Jørgensen, Christian Juncher; Askaer, Louise ; Rickelt, Lars F.; Joensen, Hans P.; Larsen, Morten; Liengaard, Lars.

Methods in Biogeochemistry of Wetlands: Methods of Soil Analysis. ed. / R. D. DeLaune; K. R. Reddy; C. J. Richardson; J. P. Megonigal. Vol. 10 Madison, Wisconsin, USA : Soil Science Society of America Book Series, 2013. p. 949-970.

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

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AU - Elberling, Bo

AU - Kühl, Michael

AU - Glud, Ronnie N.

AU - Jørgensen, Christian Juncher

AU - Askaer, Louise

AU - Rickelt, Lars F.

AU - Joensen, Hans P.

AU - Larsen, Morten

AU - Liengaard, Lars

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N2 - The need for measurements of soil gas concentrations and surface fluxes of greenhouse gases at high temporal and spatial resolution in wetland ecosystem has lead to the introduction of several new analytical techniques and methods. In addition to the automated flux chamber methodology for high-resolution estimates of greenhouse gas fluxes across the soil-atmosphere interface, these high-resolution methods include microsensors for quantification of spatiotemporal concentration dynamics in O2 and N2O at micrometer scales, fiber-optic optodes for long-term continuous point measurements of O2 concentrations, and planar optodes for high-resolution two-dimensional measurements of O2 and pH. This chapter summarizes the principles behind the methods and shows examples of new insights obtained using combinations of these different methods in a Danish fresh-water wetland system. The results highlight that wetland and peat soils are highly heterogeneous, containing a mosaic of dynamic macropore systems created by both macrofauna and flora leading to distinct spatial and temporal variations in gas concentration on a scale of millimeters and minutes. Applications of these new methodologies allow measurements of greenhouse gas dynamics in wetlands on a scale at which the underlying processes are regulated by microenvironmental controls.

AB - The need for measurements of soil gas concentrations and surface fluxes of greenhouse gases at high temporal and spatial resolution in wetland ecosystem has lead to the introduction of several new analytical techniques and methods. In addition to the automated flux chamber methodology for high-resolution estimates of greenhouse gas fluxes across the soil-atmosphere interface, these high-resolution methods include microsensors for quantification of spatiotemporal concentration dynamics in O2 and N2O at micrometer scales, fiber-optic optodes for long-term continuous point measurements of O2 concentrations, and planar optodes for high-resolution two-dimensional measurements of O2 and pH. This chapter summarizes the principles behind the methods and shows examples of new insights obtained using combinations of these different methods in a Danish fresh-water wetland system. The results highlight that wetland and peat soils are highly heterogeneous, containing a mosaic of dynamic macropore systems created by both macrofauna and flora leading to distinct spatial and temporal variations in gas concentration on a scale of millimeters and minutes. Applications of these new methodologies allow measurements of greenhouse gas dynamics in wetlands on a scale at which the underlying processes are regulated by microenvironmental controls.

M3 - Book chapter

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BT - Methods in Biogeochemistry of Wetlands

A2 - DeLaune, R. D.

A2 - Reddy, K. R.

A2 - Richardson, C. J.

A2 - Megonigal, J. P.

PB - Soil Science Society of America Book Series

CY - Madison, Wisconsin, USA

ER -

Elberling B, Kühl M, Glud RN, Jørgensen CJ, Askaer L, Rickelt LF et al. Methods to assess high-resolution subsurface gas concentrations and gas fluxes in wetland ecosystems. In DeLaune RD, Reddy KR, Richardson CJ, Megonigal JP, editors, Methods in Biogeochemistry of Wetlands: Methods of Soil Analysis. Vol. 10. Madison, Wisconsin, USA: Soil Science Society of America Book Series. 2013. p. 949-970