Deep instability of deforested tropical peatlands revealed by fluvial organic carbon fluxes

  title={Deep instability of deforested tropical peatlands revealed by fluvial organic carbon fluxes},
  author={Sam Moore and Chris D. Evans and Susan E. Page and Mark H. Garnett and Timothy Graham Jones and Chris Freeman and Aljosja Hooijer and Andy Wiltshire and Suwido H. Limin and V Gauci},
Tropical peatlands contain one of the largest pools of terrestrial organic carbon, amounting to about 89,000 teragrams (1 Tg is a billion kilograms). Approximately 65 per cent of this carbon store is in Indonesia, where extensive anthropogenic degradation in the form of deforestation, drainage and fire are converting it into a globally significant source of atmospheric carbon dioxide. Here we quantify the annual export of fluvial organic carbon from both intact peat swamp forest and peat swamp… Expand
Fluvial organic carbon fluxes from oil palm plantations on tropical peatland
Abstract. Intact tropical peatlands are dense long-term stores of carbon. However, the future security of these ecosystems is at risk from land conversion and extensive peatland drainage. This canExpand
Contrasting vulnerability of drained tropical and high‐latitude peatlands to fluvial loss of stored carbon
Carbon sequestration and storage in peatlands rely on consistently high water tables. Anthropogenic pressures including drainage, burning, land conversion for agriculture, timber, and biofuelExpand
Carbon Leaching from Tropical Peat Soils and Consequences for Carbon Balances
Drainage and deforestation turned Southeast (SE) Asian peat soils into a globally important CO2 source, because both processes accelerate peat decomposition. Carbon losses through soil leaching haveExpand
Post-Fire carbon dynamics in the tropical peat swamp forests of Brunei reveal long term elevated CH4 flux.
The longer term impact of fires on C-cycling in tropical peat swamp forests is studied, which showed major difference in the physico-chemical parameters, which in turn affected C dynamics, especially CH4. Expand
Mobilization of aged and biolabile soil carbon by tropical deforestation
It is suggested that organic matter from deforested landscapes is preferentially respired upon disturbance, resulting in elevated in-stream concentrations of carbon dioxide, and old, previously stable, and biolabile soil organic carbon is released into the modern carbon cycle via the aquatic pathway. Expand
Lateral carbon fluxes and CO 2 outgassing from a tropical peat-draining river
Abstract. Tropical peatlands play an important role in the global carbon cycle due to their immense carbon storage capacity. However, pristine peat swamp forests are vanishing due to deforestationExpand
Aquatic export of young dissolved and gaseous carbon from a pristine boreal fen: Implications for peat carbon stock stability
Overall, the results demonstrate little to no mobilization of ancient C stocks from this boreal peatland and a relatively large resilience of the source of aquatic C export to forecasted hydroclimatic changes. Expand
Carbon accumulation of tropical peatlands over millennia: a modeling approach.
This work presents the first model of long-term carbon accumulation in tropical peatlands by modifying the Holocene Peat Model (HPM), which has been successfully applied to northern temperate peat Lands and outputs are generally consistent with field observations from Indonesia. Expand
Modeling long-term carbon accumulation of tropical peat swamp forest ecosystems
MODELING LONG-TERM CARBON ACCUMULATION OF TROPICAL PEAT SWAMP FOREST ECOSYSTEMS by Sofyan Kurnianto University of New Hampshire, September, 2013 Peatlands play an important role in the global climateExpand
Deforested and drained tropical peatland sites show poorer peat substrate quality and lower microbial biomass and activity than unmanaged swamp forest
Abstract Swamp forests on deep tropical peatlands have undergone extensive deforestation and draining for agriculture and plantations, consequently becoming globally significant carbon (C) sources.Expand


The amount of carbon released from peat and forest fires in Indonesia during 1997
It is estimated that between 0.81 and 2.57 Gt of carbon were released to the atmosphere in 1997 as a result of burning peat and vegetation in Indonesia, equivalent to 13–40% of the mean annual global carbon emissions from fossil fuels, and contributed greatly to the largest annual increase in atmospheric CO2 concentration detected since records began in 1957. Expand
Carbon dioxide balance of a tropical peat swamp forest in Kalimantan, Indonesia
Tropical peatlands, which coexist with swamp forests, have accumulated vast amounts of carbon as soil organic matter. Since the 1970s, however, deforestation and drainage have progressed on anExpand
Current and future CO 2 emissions from drained peatlands in Southeast Asia
Abstract. Forested tropical peatlands in Southeast Asia store at least 42 000 Million metric tonnes (Mt) of soil carbon. Human activity and climate change threatens the stability of this large pool,Expand
Young organic matter as a source of carbon dioxide outgassing from Amazonian rivers
It is suggested that a small, rapidly cycling pool of organic carbon is responsible for the large carbon fluxes from land to water to atmosphere in the humid tropics. Expand
Fluvial organic carbon losses from a Bornean blackwater river
Concentrations of dissolved organic carbon (DOC) and particulate organic carbon (POC) were analysed from the source to the mouth of the River Sebangau in Cen- tral Kalimantan, Indonesia during theExpand
Export of DOC from forested catchments on the Precambrian Shield of Central Ontario: Clues from 13C and 14C
Export of dissolved organic carbon (DOC) from forested catchmentsis governed by competing processes of production, decomposition, sorptionand flushing. To examine the sources of DOC, carbon isotopesExpand
Northern Peatlands: Role in the Carbon Cycle and Probable Responses to Climatic Warming.
  • E. Gorham
  • Biology, Medicine
  • Ecological applications : a publication of the Ecological Society of America
  • 1991
Satellite-monitoring of the abundance of open water in the peatlands of the West Siberian Plain and the Hudson/James Bay Lowland is suggested as a likely method of detecting early effects of climatic warming upon boreal and subarctic peatland environments. Expand
Global and regional importance of the tropical peatland carbon pool
Accurate inventory of tropical peatland is important in order to (a) determine the magnitude of the carbon pool; (b) estimate the scale of transfers of peat-derived greenhouse gases to the atmosphereExpand
Export of young terrigenous dissolved organic carbon from rivers to the Arctic Ocean
natural abundance 14 C data indicating that dissolved organic carbon (DOC) from several Eurasian and North American rivers is predominantly young and largely derived from recently-fixed C in plantExpand
Evidence against recent climate‐induced destabilisation of soil carbon from 14C analysis of riverine dissolved organic matter
[1] The stability of global soil carbon (C) represents a major uncertainty in forecasting future climate change. In the UK, substantial soil C losses have been reported, while at the same timeExpand