The uncertain climate footprint of wetlands under human pressure

A.M.R. Petrescu, A. Lohila, J.P. Tuovinen, D.D. Baldocchi, A.R. Desai, N.T. Roulet, T. Vesala, A.J. Dolman, W.C. Oechel, B. Marcolla, T. Friborg, J. Rinne, J.H. Matthes, L. Merbold, A. Meijide, G. Kiely, M. Sottocornola, T. Sachs, D. Zona, A. Varlagin & 7 others D.Y.F. Lai, E. Veenendaal, F.J.W. Parmentier, U. Skiba, M. Lund, A. Hensen, J. van Huissteden

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Significant climate risks are associated with a positive carbon-temperature feedback in northern latitude carbon-rich ecosystems, making an accurate analysis of human impacts on the net greenhouse gas balance of wetlands a priority. Here, we provide a coherent assessment of the climate footprint of a network of wetland sites based on simultaneous and quasi-continuous ecosystem observations of CO<inf>2</inf> and CH<inf>4</inf> fluxes. Experimental areas are located both in natural and in managed wetlands and cover a wide range of climatic regions, ecosystem types, and management practices. Based on direct observations we predict that sustained CH<inf>4</inf> emissions in natural ecosystems are in the long term (i.e., several centuries) typically offset by CO<inf>2</inf> uptake, although with large spatiotemporal variability. Using a space-for-time analogy across ecological and climatic gradients, we represent the chronosequence from natural to managed conditions to quantify the "cost" of CH<inf>4</inf> emissions for the benefit of net carbon sequestration. With a sustained pulse-response radiative forcing model, we found a significant increase in atmospheric forcing due to land management, in particular for wetland converted to cropland. Our results quantify the role of human activities on the climate footprint of northern wetlands and call for development of active mitigation strategies for managed wetlands and new guidelines of the Intergovernmental Panel on Climate Change (IPCC) accounting for both sustained CH<inf>4</inf> emissions and cumulative CO<inf>2</inf> exchange.
Original languageEnglish
Pages (from-to)4594-4599
JournalProceedings of the National Academy of Sciences of the United States of America
Volume112
Issue number15
DOIs
Publication statusPublished - 2015

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footprint
wetland
climate
ecosystem
climatic region
atmospheric forcing
Intergovernmental Panel on Climate Change
ecosystem management
carbon
chronosequence
radiative forcing
anthropogenic effect
land management
carbon sequestration
management practice
greenhouse gas
mitigation
human activity
cost
temperature

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Petrescu, A.M.R. ; Lohila, A. ; Tuovinen, J.P. ; Baldocchi, D.D. ; Desai, A.R. ; Roulet, N.T. ; Vesala, T. ; Dolman, A.J. ; Oechel, W.C. ; Marcolla, B. ; Friborg, T. ; Rinne, J. ; Matthes, J.H. ; Merbold, L. ; Meijide, A. ; Kiely, G. ; Sottocornola, M. ; Sachs, T. ; Zona, D. ; Varlagin, A. ; Lai, D.Y.F. ; Veenendaal, E. ; Parmentier, F.J.W. ; Skiba, U. ; Lund, M. ; Hensen, A. ; van Huissteden, J. / The uncertain climate footprint of wetlands under human pressure. In: Proceedings of the National Academy of Sciences of the United States of America. 2015 ; Vol. 112, No. 15. pp. 4594-4599.
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title = "The uncertain climate footprint of wetlands under human pressure",
abstract = "Significant climate risks are associated with a positive carbon-temperature feedback in northern latitude carbon-rich ecosystems, making an accurate analysis of human impacts on the net greenhouse gas balance of wetlands a priority. Here, we provide a coherent assessment of the climate footprint of a network of wetland sites based on simultaneous and quasi-continuous ecosystem observations of CO2 and CH4 fluxes. Experimental areas are located both in natural and in managed wetlands and cover a wide range of climatic regions, ecosystem types, and management practices. Based on direct observations we predict that sustained CH4 emissions in natural ecosystems are in the long term (i.e., several centuries) typically offset by CO2 uptake, although with large spatiotemporal variability. Using a space-for-time analogy across ecological and climatic gradients, we represent the chronosequence from natural to managed conditions to quantify the {"}cost{"} of CH4 emissions for the benefit of net carbon sequestration. With a sustained pulse-response radiative forcing model, we found a significant increase in atmospheric forcing due to land management, in particular for wetland converted to cropland. Our results quantify the role of human activities on the climate footprint of northern wetlands and call for development of active mitigation strategies for managed wetlands and new guidelines of the Intergovernmental Panel on Climate Change (IPCC) accounting for both sustained CH4 emissions and cumulative CO2 exchange.",
author = "A.M.R. Petrescu and A. Lohila and J.P. Tuovinen and D.D. Baldocchi and A.R. Desai and N.T. Roulet and T. Vesala and A.J. Dolman and W.C. Oechel and B. Marcolla and T. Friborg and J. Rinne and J.H. Matthes and L. Merbold and A. Meijide and G. Kiely and M. Sottocornola and T. Sachs and D. Zona and A. Varlagin and D.Y.F. Lai and E. Veenendaal and F.J.W. Parmentier and U. Skiba and M. Lund and A. Hensen and {van Huissteden}, J.",
year = "2015",
doi = "10.1073/pnas.1416267112",
language = "English",
volume = "112",
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journal = "Proceedings of the National Academy of Sciences of the United States of America",
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publisher = "National Acad Sciences",
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}

Petrescu, AMR, Lohila, A, Tuovinen, JP, Baldocchi, DD, Desai, AR, Roulet, NT, Vesala, T, Dolman, AJ, Oechel, WC, Marcolla, B, Friborg, T, Rinne, J, Matthes, JH, Merbold, L, Meijide, A, Kiely, G, Sottocornola, M, Sachs, T, Zona, D, Varlagin, A, Lai, DYF, Veenendaal, E, Parmentier, FJW, Skiba, U, Lund, M, Hensen, A & van Huissteden, J 2015, 'The uncertain climate footprint of wetlands under human pressure' Proceedings of the National Academy of Sciences of the United States of America, vol. 112, no. 15, pp. 4594-4599. https://doi.org/10.1073/pnas.1416267112

The uncertain climate footprint of wetlands under human pressure. / Petrescu, A.M.R.; Lohila, A.; Tuovinen, J.P.; Baldocchi, D.D.; Desai, A.R.; Roulet, N.T.; Vesala, T.; Dolman, A.J.; Oechel, W.C.; Marcolla, B.; Friborg, T.; Rinne, J.; Matthes, J.H.; Merbold, L.; Meijide, A.; Kiely, G.; Sottocornola, M.; Sachs, T.; Zona, D.; Varlagin, A.; Lai, D.Y.F.; Veenendaal, E.; Parmentier, F.J.W.; Skiba, U.; Lund, M.; Hensen, A.; van Huissteden, J.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 112, No. 15, 2015, p. 4594-4599.

Research output: Contribution to JournalArticleAcademicpeer-review

TY - JOUR

T1 - The uncertain climate footprint of wetlands under human pressure

AU - Petrescu, A.M.R.

AU - Lohila, A.

AU - Tuovinen, J.P.

AU - Baldocchi, D.D.

AU - Desai, A.R.

AU - Roulet, N.T.

AU - Vesala, T.

AU - Dolman, A.J.

AU - Oechel, W.C.

AU - Marcolla, B.

AU - Friborg, T.

AU - Rinne, J.

AU - Matthes, J.H.

AU - Merbold, L.

AU - Meijide, A.

AU - Kiely, G.

AU - Sottocornola, M.

AU - Sachs, T.

AU - Zona, D.

AU - Varlagin, A.

AU - Lai, D.Y.F.

AU - Veenendaal, E.

AU - Parmentier, F.J.W.

AU - Skiba, U.

AU - Lund, M.

AU - Hensen, A.

AU - van Huissteden, J.

PY - 2015

Y1 - 2015

N2 - Significant climate risks are associated with a positive carbon-temperature feedback in northern latitude carbon-rich ecosystems, making an accurate analysis of human impacts on the net greenhouse gas balance of wetlands a priority. Here, we provide a coherent assessment of the climate footprint of a network of wetland sites based on simultaneous and quasi-continuous ecosystem observations of CO2 and CH4 fluxes. Experimental areas are located both in natural and in managed wetlands and cover a wide range of climatic regions, ecosystem types, and management practices. Based on direct observations we predict that sustained CH4 emissions in natural ecosystems are in the long term (i.e., several centuries) typically offset by CO2 uptake, although with large spatiotemporal variability. Using a space-for-time analogy across ecological and climatic gradients, we represent the chronosequence from natural to managed conditions to quantify the "cost" of CH4 emissions for the benefit of net carbon sequestration. With a sustained pulse-response radiative forcing model, we found a significant increase in atmospheric forcing due to land management, in particular for wetland converted to cropland. Our results quantify the role of human activities on the climate footprint of northern wetlands and call for development of active mitigation strategies for managed wetlands and new guidelines of the Intergovernmental Panel on Climate Change (IPCC) accounting for both sustained CH4 emissions and cumulative CO2 exchange.

AB - Significant climate risks are associated with a positive carbon-temperature feedback in northern latitude carbon-rich ecosystems, making an accurate analysis of human impacts on the net greenhouse gas balance of wetlands a priority. Here, we provide a coherent assessment of the climate footprint of a network of wetland sites based on simultaneous and quasi-continuous ecosystem observations of CO2 and CH4 fluxes. Experimental areas are located both in natural and in managed wetlands and cover a wide range of climatic regions, ecosystem types, and management practices. Based on direct observations we predict that sustained CH4 emissions in natural ecosystems are in the long term (i.e., several centuries) typically offset by CO2 uptake, although with large spatiotemporal variability. Using a space-for-time analogy across ecological and climatic gradients, we represent the chronosequence from natural to managed conditions to quantify the "cost" of CH4 emissions for the benefit of net carbon sequestration. With a sustained pulse-response radiative forcing model, we found a significant increase in atmospheric forcing due to land management, in particular for wetland converted to cropland. Our results quantify the role of human activities on the climate footprint of northern wetlands and call for development of active mitigation strategies for managed wetlands and new guidelines of the Intergovernmental Panel on Climate Change (IPCC) accounting for both sustained CH4 emissions and cumulative CO2 exchange.

U2 - 10.1073/pnas.1416267112

DO - 10.1073/pnas.1416267112

M3 - Article

VL - 112

SP - 4594

EP - 4599

JO - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

SN - 0027-8424

IS - 15

ER -