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12. Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance

Author

Hodgkins, Suzanne B., Richardson, Curtis J., Dommain, René, Wang, Hongjun, Glaser, Paul H., Verbeke, Brittany, Winkler, B. Rose, Cobb, Alexander R., Rich, Virginia I., Missilmani, Malak, Flanagan, Neal, Ho, Mengchi, Hoyt, Alison M., Harvey, Charles F., Vining, S. Rose, Hough, Moira A., Moore, Tim R., Richard, Pierre J. H., De La Cruz, Florentino B., Toufaily, Joumana, Hamdan, Rasha, Cooper, William T., and Chanton, Jeffrey P.

Published
2018
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13. Hydrological Processes, Nutrient Flows and Patterns of Fens and Bogs

Author

Bleuten, Wladimir, Borren, Wiebe, Glaser, Paul H., Tsuchihara, Takeo, Lapshina, Elena D., Mäkilä, Markku, Siegel, Don, Joosten, Hans, Wassen, Martin J., Caldwell, M. M., editor, Heldmaier, G., editor, Jackson, R. B., editor, Lange, O. L., editor, Mooney, H. A., editor, Schulze, E. -D., editor, Sommer, U., editor, Verhoeven, Jos T. A., editor, Beltman, Boudewijn, editor, Bobbink, Roland, editor, and Whigham, Dennis F., editor

Published
2006
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24. The Relative Importance of Methanogenesis in the Decomposition of Organic Matter in Northern Peatlands

Author

Corbett, J. Elizabeth, Tfaily, Malak M, Burdige, David J, Glaser, Paul H, and Chanton, Jeffrey P

Subjects
Inorganic, Organic And Physical Chemistry, Geophysics
Abstract

Using an isotope-mass balance approach and assuming the equimolar production of CO2 and CH4 from methanogenesis (e.g., anaerobic decomposition of cellulose), we calculate that the proportion of total CO2 production from methanogenesis varies from 37 to 83% across a variety of northern peatlands. In a relative sense, methanogenesis was a more important pathway for decomposition in bogs (80 +/- 13% of CO2 production) than in fens (64 +/- 5.7% of CO2 production), but because fens contain more labile substrates they may support higher CH4 production overall. The concentration of CO2 produced from methanogenesis (CO2-meth) can be considered equivalent to CH4 concentration before loss due to ebullition, plant-mediated transport, or diffusion. Bogs produced slightly less CO2-meth than fens (2.9 +/- 1.3 and 3.7 +/- 1.4 mmol/L, respectively). Comparing the quantity of CH4 present to CO2-meth, fens lost slightly more CH4 than bogs (89 +/- 2.8% and 82 +/- 5.3%, respectively) likely due to the presence of vascular plant roots. In collapsed permafrost wetlands, bog moats produced half the amount of CO2-meth (0.8 +/- 0.2mmol/L) relative to midbogs (1.6 +/- 0.6 mmol/L) and methanogenesis was less important (42 +/- 6.6% of total CO2 production relative to 55 +/- 8.1%).We hypothesize that the lower methane production potential in collapsed permafrost wetlands occurs because recently thawed organic substrates are being first exposed to the initial phases of anaerobic decomposition following collapse and flooding. Bog moats lost a comparable amount of CH4 as midbogs (63 +/- 7.0% and 64 +/- 9.3%).

Published
2015
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26. Tropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance

Author

Massachusetts Institute of Technology. Department of Civil and Environmental Engineering, Hodgkins, Suzanne B., Richardson, Curtis J., Dommain, René, Wang, Hongjun, Glaser, Paul H., Verbeke, Brittany, Winkler, B. Rose, Cobb, Alexander R., Rich, Virginia I., Missilmani, Malak, Flanagan, Neal, Ho, Mengchi, Hoyt, Alison M., Harvey, Charles F, Vining, S. Rose, Hough, Moira A., Moore, Tim R., Richard, Pierre J. H., De La Cruz, Florentino B., Toufaily, Joumana, Hamdan, Rasha, Cooper, William T., Chanton, Jeffrey P., Massachusetts Institute of Technology. Department of Civil and Environmental Engineering, Hodgkins, Suzanne B., Richardson, Curtis J., Dommain, René, Wang, Hongjun, Glaser, Paul H., Verbeke, Brittany, Winkler, B. Rose, Cobb, Alexander R., Rich, Virginia I., Missilmani, Malak, Flanagan, Neal, Ho, Mengchi, Hoyt, Alison M., Harvey, Charles F, Vining, S. Rose, Hough, Moira A., Moore, Tim R., Richard, Pierre J. H., De La Cruz, Florentino B., Toufaily, Joumana, Hamdan, Rasha, Cooper, William T., and Chanton, Jeffrey P.

Abstract

Peatlands represent large terrestrial carbon banks. Given that most peat accumulates in boreal regions, where low temperatures and water saturation preserve organic matter, the existence of peat in (sub)tropical regions remains enigmatic. Here we examined peat and plant chemistry across a latitudinal transect from the Arctic to the tropics. Near-surface low-latitude peat has lower carbohydrate and greater aromatic content than near-surface high-latitude peat, creating a reduced oxidation state and resulting recalcitrance. This recalcitrance allows peat to persist in the (sub)tropics despite warm temperatures. Because we observed similar declines in carbohydrate content with depth in high-latitude peat, our data explain recent field-scale deep peat warming experiments in which catotelm (deeper) peat remained stable despite temperature increases up to 9 °C. We suggest that high-latitude deep peat reservoirs may be stabilized in the face of climate change by their ultimately lower carbohydrate and higher aromatic composition, similar to tropical peats., National Science Foundation (Grant 1114155), National Science Foundation (Grant 1114161), NSF (Award 0628647), US Department of Energy, Office of Science, Office of Biological and Environmental Research (contract DE-SC0012088), US Department of Energy Office of Biological and Environmental Research under the Genomic Science program (Award DE-SC0004632), US Department of Energy Office of Biological and Environmental Research under the Genomic Science program (Award DE-SC0010580), US Department of Energy Office of Biological and Environmental Research under the Genomic Science program (Award DE-SC0016440), NASA Interdisciplinary Studies in Earth Science program (Award NNX17AK10G), US Department of Energy Office of Biological and Environmental Research under the Terrestrial Ecosystem Sciences program (Award DE-SC0012272)

Published
2020

31. Hydraulic reversals and episodic methane emissions during drought cycles in mires

Author

Romanowics, Edwin A., SIegel, Donald I., and Glaser, Paul H.

Subjects
Peat -- Environmental aspects, Reservoirs, Underground -- Environmental aspects, Methane -- Environmental aspects, Droughts -- Environmental aspects, Earth sciences
Abstract

Reversals in hydraulic head and extensive methane losses were identified during a drought cycle from changes in hydraulic-head and dissolved-methane profiles in peat, Glacial Lake Agassiz Peatlands, northern Minnesota, United States. During the summer 1990 drought, regional ground water discharged from the mineral soil underlying the peat to raised bogs. Concentrations of dissolved CH4 in pore water showed that much of the peat column was supersaturated with respect to a reference standard of 1 atm partial pressure CH4. By the summer of 1991, the severity of the drought lessened, and the upper peat column was resaturated with precipitation-derived water. Ground-water flow was then controlled by local, precipitation-driven, recharge flow systems, and the regional ground water that was discharged affected only the peat immediately above the mineral soil-peat interface. In contrast, during the summer of 1991, concentrations of dissolved CH4 in pore water were all undersaturated with respect to 1 atm partial pressure CH4. The decrease in the amount of dissolved CH4 in the pore water from the summer of 1990 to the summer of 1991 probably was caused by changes in the CH4 flux and degassing to the unsaturated zone and to a lesser extent by changes in the partial pressure of gaseous CH4 in the peat as the peat volume increased with expansion as it resaturated.

Published
1993

32. Fate of silicate minerals in a peat bog

Author

Bennett, Philip C., Siegel, Donald I., Hill, Barbara M., and Glaser, Paul H.

Subjects
Quartz -- Analysis, Silicate minerals -- Analysis, Chemical weathering -- Research, Earth sciences
Abstract

An investigation of silicate weathering in a Minnesota mire indicates that quartz and aluminosilicates rapidly dissolve in anoxic, organic-rich, neutral-pH environments. Vertical profiles of pH, dissolved silicon, and major cations were obtained at a raised bog and a spring fen and compared. Profiles of readily extractable silicon, diatom abundance, ash mineralogy, and silicate surface texture were determined from peat cores collected at each site. In the bog, normally a recharge mound, dissolved silicon increases with depth as pH increases, exceeding the background silicon concentration by a factor of two. Silicate grain surfaces, including quartz, are chemically etched at this location, despite being in contact with pore water at neutral pH with dissolved silicon well above the equilibrium solubility of quartz. The increasing silica concentrations at circum-neutral pH are consistent with a system where silicate solubility is influenced by silica-organic-acid complexes. Silica-organic-acid complexes therefore may be the cause of the almost complete absence of diatoms in decomposed peat and contribute to the formation of silica-depleted underclays commonly found beneath coal.

Published
1991

34. Denial of long-term issues with agriculture on tropical peatlands will have devastating consequences

Author

Wijedasa, Lahiru S., Jauhiainen, Jyrki, Önönen, Mari K., Lampela, Maija, Vasander, Harri, LeBlanc, Marie-Claire, Evers, Stephanie, Smith, Thomas E.L., Yule, Catherine M., Varkkey, Helena, Lupascu, Massimo, Parish, Faizal, Singleton, Ian, Clements, Gopalasamy R., Aziz, Sheema Abdul, Harrison, Mark E., Cheyne, Susan, Anshari, Gusti Z., Meijaard, Erik, Goldstein, Jenny E., Waldron, Susan, Hergoualc'h, Kristell, Dommain, Rene, Frolking, Steve, Evans, Christopher D., Posa, Mary Rose C., Glaser, Paul H., Suryadiputra, Nyoman, Lubis, Reza, Santika, Truly, Padfield, Rory, Kurnianto, Sofyan, Hadisiswoyo, Panut, Lim, Teck Wyn, Page, Susan E., Gauci, Vincent, van der Meer, Peter J., Buckland, Helen, Garnier, Fabien, Samuel, Marshall K., Choo, Liza Nuriati Lim Kim, O'Reilly, Patrick, Warren, Matthew, Suksuwan, Surin, Sumarga, Elham, Jain, Anuj, Laurance, William F., Couwenberg, John, Joosten, Hans, Vernimmen, Ronald, Hooijer, Aljosja, Malins, Chris, Cochrane, Mark A., Perumal, Balu, Siegert, Florian, Peh, Kelvin S.-H., Comeau, Louis-Pierre, Verchot, Louis, Harvey, Charles F., Cobb, Alex, Jaafar, Zeehan, Wösten, Henk, Manuri, Solichin, Müller, Moritz, Giesen, Wim, Phelps, Jacob, Yong, Ding Li, Silvius, Marcel, Wedeux, Béatrice M.M., Hoyt, Alison, Osaki, Mitsuru, Takashi, Hirano, Takahashi, Hidenori, Kohyama, Takashi S., Haraguchi, Akira, Nugroho, Nunung P., Coomes, David A., Quoi, Le Phat, Dohong, Alue, Gunawan, Haris, Gaveau, David L.A., Langner, Andreas, Lim, Felix K.S., Edwards, David P., Giam, Xingli, van der Werf, Guido, Carmenta, Rachel, Verwer, Caspar C., Gibson, Luke, Grandois, Laure, Graham, Laura Linda Bozena, Regalino, Jhanson, Wich, Serge A., Rieley, Jack, Kettridge, Nicholas, Brown, Chloe, Pirard, Romain, Moore, Sam, Capilla, B. Ripoll, Ballhorn, Uwe, Ho, Hua Chew, Hoscilo, Agata, Lohberger, Sandra, Evans, Theodore A., Yulianti, Nina, Blackham, Grace, Onrizal, Husson, Simon, Murdiyarso, Daniel, Pangala, Sunita, Cole, Lydia E.S., Tacconi, Luca, Segah, Hendrik, Tonoto, Prayoto, Lee, Janice S.H., Schmilewski, Gerald, Wulffraat, Stephan, Putra, Erianto Indra, Cattau, Megan E., Clymo, R.S., Morrison, Ross, Mujahid, Aazani, Miettinen, Jukka, Liew, Soo Chin, Valpola, Samu, Wilson, David, D'Arcy, Laura, Gerding, Michiel, Sundari, Siti, Thornton, Sara A., Kalisz, Barbara, Chapman, Stephen J., Su, Ahmad Suhaizi Mat, Basuki, Imam, Itoh, Masayuki, Traeholt, Carl, Sloan, Sean, Sayok, Alexander K., Andersen, Roxane, Wijedasa, Lahiru S., Jauhiainen, Jyrki, Önönen, Mari K., Lampela, Maija, Vasander, Harri, LeBlanc, Marie-Claire, Evers, Stephanie, Smith, Thomas E.L., Yule, Catherine M., Varkkey, Helena, Lupascu, Massimo, Parish, Faizal, Singleton, Ian, Clements, Gopalasamy R., Aziz, Sheema Abdul, Harrison, Mark E., Cheyne, Susan, Anshari, Gusti Z., Meijaard, Erik, Goldstein, Jenny E., Waldron, Susan, Hergoualc'h, Kristell, Dommain, Rene, Frolking, Steve, Evans, Christopher D., Posa, Mary Rose C., Glaser, Paul H., Suryadiputra, Nyoman, Lubis, Reza, Santika, Truly, Padfield, Rory, Kurnianto, Sofyan, Hadisiswoyo, Panut, Lim, Teck Wyn, Page, Susan E., Gauci, Vincent, van der Meer, Peter J., Buckland, Helen, Garnier, Fabien, Samuel, Marshall K., Choo, Liza Nuriati Lim Kim, O'Reilly, Patrick, Warren, Matthew, Suksuwan, Surin, Sumarga, Elham, Jain, Anuj, Laurance, William F., Couwenberg, John, Joosten, Hans, Vernimmen, Ronald, Hooijer, Aljosja, Malins, Chris, Cochrane, Mark A., Perumal, Balu, Siegert, Florian, Peh, Kelvin S.-H., Comeau, Louis-Pierre, Verchot, Louis, Harvey, Charles F., Cobb, Alex, Jaafar, Zeehan, Wösten, Henk, Manuri, Solichin, Müller, Moritz, Giesen, Wim, Phelps, Jacob, Yong, Ding Li, Silvius, Marcel, Wedeux, Béatrice M.M., Hoyt, Alison, Osaki, Mitsuru, Takashi, Hirano, Takahashi, Hidenori, Kohyama, Takashi S., Haraguchi, Akira, Nugroho, Nunung P., Coomes, David A., Quoi, Le Phat, Dohong, Alue, Gunawan, Haris, Gaveau, David L.A., Langner, Andreas, Lim, Felix K.S., Edwards, David P., Giam, Xingli, van der Werf, Guido, Carmenta, Rachel, Verwer, Caspar C., Gibson, Luke, Grandois, Laure, Graham, Laura Linda Bozena, Regalino, Jhanson, Wich, Serge A., Rieley, Jack, Kettridge, Nicholas, Brown, Chloe, Pirard, Romain, Moore, Sam, Capilla, B. Ripoll, Ballhorn, Uwe, Ho, Hua Chew, Hoscilo, Agata, Lohberger, Sandra, Evans, Theodore A., Yulianti, Nina, Blackham, Grace, Onrizal, Husson, Simon, Murdiyarso, Daniel, Pangala, Sunita, Cole, Lydia E.S., Tacconi, Luca, Segah, Hendrik, Tonoto, Prayoto, Lee, Janice S.H., Schmilewski, Gerald, Wulffraat, Stephan, Putra, Erianto Indra, Cattau, Megan E., Clymo, R.S., Morrison, Ross, Mujahid, Aazani, Miettinen, Jukka, Liew, Soo Chin, Valpola, Samu, Wilson, David, D'Arcy, Laura, Gerding, Michiel, Sundari, Siti, Thornton, Sara A., Kalisz, Barbara, Chapman, Stephen J., Su, Ahmad Suhaizi Mat, Basuki, Imam, Itoh, Masayuki, Traeholt, Carl, Sloan, Sean, Sayok, Alexander K., and Andersen, Roxane

Abstract

Letter to the Editor.

Published
2017

35. Denial of long-term issues with agriculture on tropical peatlands will have devastating consequences

Author

Singapore-MIT Alliance in Research and Technology (SMART), Parsons Laboratory for Environmental Science and Engineering (Massachusetts Institute of Technology), Harvey, Charles F, Hoyt, Alison May, Cobb, Alexander R., Wijedasa, Lahiru S., Jauhiainen, Jyrki, Könönen, Mari, Lampela, Maija, Vasander, Harri, Leblanc, Marie-Claire, Evers, Stephanie, Smith, E. L. Thomas, Yule, Catherine M., Varkkey, Helena, Lupascu, Massimo, Parish, Faizal, Singleton, Ian, Clements, Gopalasamy R., Aziz, Sheema Abdul, Harrison, Mark E., Cheyne, Susan, Anshari, Gusti Z., Meijaard, Erik, Goldstein, Jenny E., Waldron, Susan, Hergoualc'h, Kristell, Dommain, Rene, Frolking, Steve, Evans, Christopher D., Posa, Mary Rose C., Glaser, Paul H., Suryadiputra, Nyoman, Lubis, Reza, Santika, Truly, Padfield, Rory, Kurnianto, Sofyan, Hadisiswoyo, Panut, Lim, Teck Wyn, Page, Susan E., Gauci, Vincent, Van Der Meer, Peter J., Buckland, Helen, Garnier, Fabien, Samuel, Marshall K., Choo, Liza Nuriati Lim Kim, O'Reilly, Patrick, Warren, Matthew, Suksuwan, Surin, Sumarga, Elham, Jain, Anuj, Laurance, William F., Couwenberg, John, Joosten, Hans, Vernimmen, Ronald, Hooijer, Aljosja, Malins, Chris, Cochrane, Mark A., Perumal, Balu, Siegert, Florian, Peh, Kelvin S.-H., Comeau, Louis-Pierre, Verchot, Louis, Jaafar, Zeehan, Wösten, Henk, Manuri, Solichin, Müller, Moritz, Giesen, Wim, Phelps, Jacob, Yong, Ding Li, Silvius, Marcel, Wedeux, Béatrice M. M., Osaki, Mitsuru, Hirano, Takashi, Takahashi, Hidenori, Kohyama, Takashi S., Haraguchi, Akira, Nugroho, Nunung P., Coomes, David A., Quoi, Le Phat, Dohong, Alue, Gunawan, Haris, Gaveau, David L. A., Langner, Andreas, Lim, Felix K. S., Edwards, David P., Giam, Xingli, Van Der Werf, Guido, Carmenta, Rachel, Verwer, Caspar C., Gibson, Luke, Gandois, Laure, Graham, Laura Linda Bozena, Regalino, Jhanson, Wich, Serge A., Rieley, Jack, Kettridge, Nicholas, Brown, Chloe, Pirard, Romain, Capilla, B. Ripoll, Ballhorn, Uwe, Ho, Hua Chew, Hoscilo, Agata, Lohberger, Sandra, Evans, Theodore A., Yulianti, Nina, Blackham, Grace, Onrizal, Grace, Husson, Simon, Murdiyarso, Daniel, Pangala, Sunita, Cole, Lydia E. S., Tacconi, Luca, Segah, Hendrik, Tonoto, Prayoto, Lee, Janice S. H., Schmilewski, Gerald, Wulffraat, Stephan, Putra, Erianto Indra, Cattau, Megan E., Clymo, R. S., Morrison, Ross, Mujahid, Aazani, Miettinen, Jukka, Liew, Soo Chin, Valpola, Samu, Wilson, David, D'Arcy, Laura, Gerding, Michiel, Sundari, Siti, Thornton, Sara A., Kalisz, Barbara, Chapman, Stephen J., Su, Ahmad Suhaizi Mat, Basuki, Imam, Itoh, Masayuki, Traeholt, Carl, Sloan, Sean, Sayok, Alexander K., Andersen, Roxane, Moore, Sam, S.B. Massachusetts Institute of Technology, Singapore-MIT Alliance in Research and Technology (SMART), Parsons Laboratory for Environmental Science and Engineering (Massachusetts Institute of Technology), Harvey, Charles F, Hoyt, Alison May, Cobb, Alexander R., Wijedasa, Lahiru S., Jauhiainen, Jyrki, Könönen, Mari, Lampela, Maija, Vasander, Harri, Leblanc, Marie-Claire, Evers, Stephanie, Smith, E. L. Thomas, Yule, Catherine M., Varkkey, Helena, Lupascu, Massimo, Parish, Faizal, Singleton, Ian, Clements, Gopalasamy R., Aziz, Sheema Abdul, Harrison, Mark E., Cheyne, Susan, Anshari, Gusti Z., Meijaard, Erik, Goldstein, Jenny E., Waldron, Susan, Hergoualc'h, Kristell, Dommain, Rene, Frolking, Steve, Evans, Christopher D., Posa, Mary Rose C., Glaser, Paul H., Suryadiputra, Nyoman, Lubis, Reza, Santika, Truly, Padfield, Rory, Kurnianto, Sofyan, Hadisiswoyo, Panut, Lim, Teck Wyn, Page, Susan E., Gauci, Vincent, Van Der Meer, Peter J., Buckland, Helen, Garnier, Fabien, Samuel, Marshall K., Choo, Liza Nuriati Lim Kim, O'Reilly, Patrick, Warren, Matthew, Suksuwan, Surin, Sumarga, Elham, Jain, Anuj, Laurance, William F., Couwenberg, John, Joosten, Hans, Vernimmen, Ronald, Hooijer, Aljosja, Malins, Chris, Cochrane, Mark A., Perumal, Balu, Siegert, Florian, Peh, Kelvin S.-H., Comeau, Louis-Pierre, Verchot, Louis, Jaafar, Zeehan, Wösten, Henk, Manuri, Solichin, Müller, Moritz, Giesen, Wim, Phelps, Jacob, Yong, Ding Li, Silvius, Marcel, Wedeux, Béatrice M. M., Osaki, Mitsuru, Hirano, Takashi, Takahashi, Hidenori, Kohyama, Takashi S., Haraguchi, Akira, Nugroho, Nunung P., Coomes, David A., Quoi, Le Phat, Dohong, Alue, Gunawan, Haris, Gaveau, David L. A., Langner, Andreas, Lim, Felix K. S., Edwards, David P., Giam, Xingli, Van Der Werf, Guido, Carmenta, Rachel, Verwer, Caspar C., Gibson, Luke, Gandois, Laure, Graham, Laura Linda Bozena, Regalino, Jhanson, Wich, Serge A., Rieley, Jack, Kettridge, Nicholas, Brown, Chloe, Pirard, Romain, Capilla, B. Ripoll, Ballhorn, Uwe, Ho, Hua Chew, Hoscilo, Agata, Lohberger, Sandra, Evans, Theodore A., Yulianti, Nina, Blackham, Grace, Onrizal, Grace, Husson, Simon, Murdiyarso, Daniel, Pangala, Sunita, Cole, Lydia E. S., Tacconi, Luca, Segah, Hendrik, Tonoto, Prayoto, Lee, Janice S. H., Schmilewski, Gerald, Wulffraat, Stephan, Putra, Erianto Indra, Cattau, Megan E., Clymo, R. S., Morrison, Ross, Mujahid, Aazani, Miettinen, Jukka, Liew, Soo Chin, Valpola, Samu, Wilson, David, D'Arcy, Laura, Gerding, Michiel, Sundari, Siti, Thornton, Sara A., Kalisz, Barbara, Chapman, Stephen J., Su, Ahmad Suhaizi Mat, Basuki, Imam, Itoh, Masayuki, Traeholt, Carl, Sloan, Sean, Sayok, Alexander K., Andersen, Roxane, and Moore, Sam, S.B. Massachusetts Institute of Technology

Published
2017

39. Forest dynamics and tip-up pools drive pulses of high carbon accumulation rates in a tropical peat dome in Borneo (Southeast Asia)

Author

Massachusetts Institute of Technology. Department of Civil and Environmental Engineering, Parsons Laboratory for Environmental Science and Engineering (Massachusetts Institute of Technology), Harvey, Charles F., Dommain, Rene, Cobb, Alexander R., Joosten, Hans, Glaser, Paul H., Chua, Amy F. L., Gandois, Laure, Kai, Fuu-Ming, Noren, Anders, Salim, Kamariah A., Su'ut, N. Salihah H., Harvey, Charles F, Massachusetts Institute of Technology. Department of Civil and Environmental Engineering, Parsons Laboratory for Environmental Science and Engineering (Massachusetts Institute of Technology), Harvey, Charles F., Dommain, Rene, Cobb, Alexander R., Joosten, Hans, Glaser, Paul H., Chua, Amy F. L., Gandois, Laure, Kai, Fuu-Ming, Noren, Anders, Salim, Kamariah A., Su'ut, N. Salihah H., and Harvey, Charles F

Abstract

Peatlands of Southeast Asia store large pools of carbon but the mechanisms of peat accumulation in tropical forests remain to be resolved. Patch dynamics and forest disturbance have seldom been considered as drivers that can amplify or dampen rates of peat accumulation. Here we used a modified piston corer, noninvasive geophysical measurements, and geochemical and paleobotanical techniques to establish the effect of tree fall on carbon accumulation rates in a peat swamp forest dominated by Shorea albida in Brunei (Borneo). Carbon initially accumulated in a mangrove forest at over 300 g C m[superscript −2] yr[superscript −1] but declined to less than 50 g C m[superscript −2] yr[superscript −1] with the establishment of a peat swamp forest. A rapid accumulation pulse of 720–960 g C m[superscript −2] yr[superscript −1] occurred around 1080 years ago as a tip-up pool infilled. Tip-up pools are common in the peatlands of northwest Borneo where windthrow and lightning strikes produce tree falls at a rate of 4 trees ha[superscript −1] every decade. A simulation model indicates that tip-up pools, which are formed across the entire forested peat dome, produce local discontinuities in the peat deposit, when peat is removed to create a pool that is rapidly filled with younger material. The resulting discontinuities in peat age at the base and sides of pool deposits obscure linkages between carbon accumulation rates and climate and require new approaches for paleoenvironmental reconstructions. Our results suggest that carbon accumulation in tropical peat swamps may be based on fundamentally different peat-forming processes than those of northern peatlands., Singapore. National Research Foundation (Singapore-MIT Alliance for Research and Technology), National Science Foundation (U.S.) (Grant 1114155), National Science Foundation (U.S.) (Grant 1114161)

Published
2016

41. Forest dynamics and tip-up pools drive pulses of high carbon accumulation rates in a tropical peat dome in Borneo (Southeast Asia)

Author

Dommain, René, primary, Cobb, Alexander R., additional, Joosten, Hans, additional, Glaser, Paul H., additional, Chua, Amy F. L., additional, Gandois, Laure, additional, Kai, Fuu-Ming, additional, Noren, Anders, additional, Salim, Kamariah A., additional, Su'ut, N. Salihah H., additional, and Harvey, Charles F., additional

Published
2015
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