Potential carbon losses from peat profiles: effects of temperature, drought cycles, and fire
Global warming and the resultant increase in evapotranspiration might lead to lowered water tables in peatlands and an increase in fire frequency. The objective of this study was to investigate some of the potential effects of these changes on peat decomposition. Dry mass losses and emissions of CO&...
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| Veröffentlicht in: | Ecological applications 1992-08, Vol.2 (3), p.298-306 |
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| creator | Hogg, Edward H. Lieffers, Victor J. Wein, Ross W. |
| description | Global warming and the resultant increase in evapotranspiration might lead to lowered water tables in peatlands and an increase in fire frequency. The objective of this study was to investigate some of the potential effects of these changes on peat decomposition. Dry mass losses and emissions of CO"2 and CH"4 from peat samples taken from three depth layers (0-10, 10-20, and 30-40 cm) of a black spruce peatland were measured in the laboratory at 8@?, 16@?, and 24@?C under two moisture treatments. Effects of deep peat fire on decomposition were also simulated by burning the upper layer (0-10 cm) of peat and adding the ash to peat samples from the 10-20 cm layer. CH"4 release averaged |
| doi_str_mv | 10.2307/1941863 |
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The objective of this study was to investigate some of the potential effects of these changes on peat decomposition. Dry mass losses and emissions of CO"2 and CH"4 from peat samples taken from three depth layers (0-10, 10-20, and 30-40 cm) of a black spruce peatland were measured in the laboratory at 8@?, 16@?, and 24@?C under two moisture treatments. Effects of deep peat fire on decomposition were also simulated by burning the upper layer (0-10 cm) of peat and adding the ash to peat samples from the 10-20 cm layer. CH"4 release averaged <1% of total carbon loss in flooded samples. Release of CO"2 was 4-9 times greater from the 0-10 cm layer than from the 30-40 cm layer. After 120 d, the 30-40 cm layer had lost <1% of its original dry mass in all treatments. Higher temperatures strongly promoted decomposition of samples exposed to drying cycles but had little effect on decomposition of continuously flooded samples. Ash addition had variable effects on CO"2 emissions but may have promoted CH"4 production. It is suggested that in certain situations, global warming may not cause appreciable increases in carbon loss from peat deposits. The results indicate that some deeper peats are resistant to decay even when exposed to warm, aerobic conditions. However, further experimental work is needed to predict the long-term response of peat deposits to changes in water levels in different peatland types.</description><identifier>ISSN: 1051-0761</identifier><identifier>EISSN: 1939-5582</identifier><identifier>DOI: 10.2307/1941863</identifier><identifier>PMID: 27759264</identifier><language>eng</language><publisher>United States: The Ecological Society of America</publisher><subject>ALBERTA ; CADENA RESPIRATORIA ; CAMBIO CLIMATICO ; CARBON DIOXIDE ; Carbon dioxide emissions ; CHAINE RESPIRATOIRE ; CLIMATIC CHANGE ; DECOMPOSITION ; DEGRADACION ; DEGRADATION ; DIOXIDO DE CARBONO ; DIOXYDE DE CARBONE ; DISPONIBILIDAD DEL AGUA ; DROUGHT ; Drying ; EAU DISPONIBLE ; EFECTO INVERNADERO ; EFFET DE SERRE ; FENS ; FERMENTACION METANICA ; FERMENTATION METHANIQUE ; FIRES ; FLORA DEL SUELO ; FLORE DU SOL ; Freshwater ; GLOBAL WARMING ; GREENHOUSE EFFECT ; INCENDIE ; INCENDIOS ; LAND ; METANO ; METHANE ; METHANE FERMENTATION ; PEAT ; PEATLAND ; Peatlands ; Pollutant emissions ; RESPIRATION ; RESPIRATORY CHAIN ; SECHERESSE ; SEQUIA ; SOIL FLORA ; TEMPERATURA ; TEMPERATURE ; TERRE ; TIERRAS ; TOURBE ; TOURBIERE ; TURBA ; TURBERA ; VARIATION DU CLIMAT ; VEGETACION ; VEGETATION ; WATER AVAILABILITY ; Water tables ; Wetland ecology</subject><ispartof>Ecological applications, 1992-08, Vol.2 (3), p.298-306</ispartof><rights>Copyright 1992 The Ecological Society of America</rights><rights>1992 by the Ecological Society of America</rights><rights>1992 by the Ecological Society of America.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4668-d38324277784dbe99429c09447c8f06115e7a5b96bacace43aed1ac6924c5efb3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/1941863$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/1941863$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,778,782,801,27911,27912,58004,58237</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/27759264$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Hogg, Edward H.</creatorcontrib><creatorcontrib>Lieffers, Victor J.</creatorcontrib><creatorcontrib>Wein, Ross W.</creatorcontrib><title>Potential carbon losses from peat profiles: effects of temperature, drought cycles, and fire</title><title>Ecological applications</title><addtitle>Ecol Appl</addtitle><description>Global warming and the resultant increase in evapotranspiration might lead to lowered water tables in peatlands and an increase in fire frequency. The objective of this study was to investigate some of the potential effects of these changes on peat decomposition. Dry mass losses and emissions of CO"2 and CH"4 from peat samples taken from three depth layers (0-10, 10-20, and 30-40 cm) of a black spruce peatland were measured in the laboratory at 8@?, 16@?, and 24@?C under two moisture treatments. Effects of deep peat fire on decomposition were also simulated by burning the upper layer (0-10 cm) of peat and adding the ash to peat samples from the 10-20 cm layer. CH"4 release averaged <1% of total carbon loss in flooded samples. Release of CO"2 was 4-9 times greater from the 0-10 cm layer than from the 30-40 cm layer. After 120 d, the 30-40 cm layer had lost <1% of its original dry mass in all treatments. Higher temperatures strongly promoted decomposition of samples exposed to drying cycles but had little effect on decomposition of continuously flooded samples. Ash addition had variable effects on CO"2 emissions but may have promoted CH"4 production. It is suggested that in certain situations, global warming may not cause appreciable increases in carbon loss from peat deposits. The results indicate that some deeper peats are resistant to decay even when exposed to warm, aerobic conditions. However, further experimental work is needed to predict the long-term response of peat deposits to changes in water levels in different peatland types.</description><subject>ALBERTA</subject><subject>CADENA RESPIRATORIA</subject><subject>CAMBIO CLIMATICO</subject><subject>CARBON DIOXIDE</subject><subject>Carbon dioxide emissions</subject><subject>CHAINE RESPIRATOIRE</subject><subject>CLIMATIC CHANGE</subject><subject>DECOMPOSITION</subject><subject>DEGRADACION</subject><subject>DEGRADATION</subject><subject>DIOXIDO DE CARBONO</subject><subject>DIOXYDE DE CARBONE</subject><subject>DISPONIBILIDAD DEL AGUA</subject><subject>DROUGHT</subject><subject>Drying</subject><subject>EAU DISPONIBLE</subject><subject>EFECTO INVERNADERO</subject><subject>EFFET DE SERRE</subject><subject>FENS</subject><subject>FERMENTACION METANICA</subject><subject>FERMENTATION METHANIQUE</subject><subject>FIRES</subject><subject>FLORA DEL SUELO</subject><subject>FLORE DU SOL</subject><subject>Freshwater</subject><subject>GLOBAL WARMING</subject><subject>GREENHOUSE EFFECT</subject><subject>INCENDIE</subject><subject>INCENDIOS</subject><subject>LAND</subject><subject>METANO</subject><subject>METHANE</subject><subject>METHANE FERMENTATION</subject><subject>PEAT</subject><subject>PEATLAND</subject><subject>Peatlands</subject><subject>Pollutant emissions</subject><subject>RESPIRATION</subject><subject>RESPIRATORY CHAIN</subject><subject>SECHERESSE</subject><subject>SEQUIA</subject><subject>SOIL FLORA</subject><subject>TEMPERATURA</subject><subject>TEMPERATURE</subject><subject>TERRE</subject><subject>TIERRAS</subject><subject>TOURBE</subject><subject>TOURBIERE</subject><subject>TURBA</subject><subject>TURBERA</subject><subject>VARIATION DU CLIMAT</subject><subject>VEGETACION</subject><subject>VEGETATION</subject><subject>WATER AVAILABILITY</subject><subject>Water tables</subject><subject>Wetland ecology</subject><issn>1051-0761</issn><issn>1939-5582</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><recordid>eNp90E1LHTEUBuBQKtXa0n0XJYtiXTg235N0J-IXCArVXSFkMid2ZObmmmSQ---bMrfdaTbJ4jlvDi9Cnyg5Zpy036kRVCv-Bu1Rw00jpWZv65tI2pBW0V30PudHUg9j7B3aZW0rDVNiD_26jQVWZXAj9i51cYXHmDNkHFKc8BpcwesUwzBC_oEhBPAl4xhwgWkNyZU5wRHuU5wffhfsN766I-xWPQ5Dgg9oJ7gxw8ftvY_uz8_uTi-b65uLq9OT68YLpXTTc82ZqDu1WvQdGCOY8cQI0XodiKJUQutkZ1TnvPMguIOeOq8ME15C6Pg-Olxy66pPM-RipyF7GEe3gjhnSzWXwjDNRKUHr1PFlDbSVPhtgT7VQhIEu07D5NLGUmL_dm63nVf5ZRs5dxP0_92_kiugC3iuNW5eyrFnJ7fUGMY4M7rOfF1mHnOJ6ZW_Py8suGjdQxqyvf9pONGaCP4HP-icxg</recordid><startdate>199208</startdate><enddate>199208</enddate><creator>Hogg, Edward H.</creator><creator>Lieffers, Victor J.</creator><creator>Wein, Ross W.</creator><general>The Ecological Society of America</general><general>Ecological Society of America</general><scope>FBQ</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>7X8</scope></search><sort><creationdate>199208</creationdate><title>Potential carbon losses from peat profiles: effects of temperature, drought cycles, and fire</title><author>Hogg, Edward H. ; Lieffers, Victor J. ; Wein, Ross W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4668-d38324277784dbe99429c09447c8f06115e7a5b96bacace43aed1ac6924c5efb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>ALBERTA</topic><topic>CADENA RESPIRATORIA</topic><topic>CAMBIO CLIMATICO</topic><topic>CARBON DIOXIDE</topic><topic>Carbon dioxide emissions</topic><topic>CHAINE RESPIRATOIRE</topic><topic>CLIMATIC CHANGE</topic><topic>DECOMPOSITION</topic><topic>DEGRADACION</topic><topic>DEGRADATION</topic><topic>DIOXIDO DE CARBONO</topic><topic>DIOXYDE DE CARBONE</topic><topic>DISPONIBILIDAD DEL AGUA</topic><topic>DROUGHT</topic><topic>Drying</topic><topic>EAU DISPONIBLE</topic><topic>EFECTO INVERNADERO</topic><topic>EFFET DE SERRE</topic><topic>FENS</topic><topic>FERMENTACION METANICA</topic><topic>FERMENTATION METHANIQUE</topic><topic>FIRES</topic><topic>FLORA DEL SUELO</topic><topic>FLORE DU SOL</topic><topic>Freshwater</topic><topic>GLOBAL WARMING</topic><topic>GREENHOUSE EFFECT</topic><topic>INCENDIE</topic><topic>INCENDIOS</topic><topic>LAND</topic><topic>METANO</topic><topic>METHANE</topic><topic>METHANE FERMENTATION</topic><topic>PEAT</topic><topic>PEATLAND</topic><topic>Peatlands</topic><topic>Pollutant emissions</topic><topic>RESPIRATION</topic><topic>RESPIRATORY CHAIN</topic><topic>SECHERESSE</topic><topic>SEQUIA</topic><topic>SOIL FLORA</topic><topic>TEMPERATURA</topic><topic>TEMPERATURE</topic><topic>TERRE</topic><topic>TIERRAS</topic><topic>TOURBE</topic><topic>TOURBIERE</topic><topic>TURBA</topic><topic>TURBERA</topic><topic>VARIATION DU CLIMAT</topic><topic>VEGETACION</topic><topic>VEGETATION</topic><topic>WATER AVAILABILITY</topic><topic>Water tables</topic><topic>Wetland ecology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hogg, Edward H.</creatorcontrib><creatorcontrib>Lieffers, Victor J.</creatorcontrib><creatorcontrib>Wein, Ross W.</creatorcontrib><collection>AGRIS</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>MEDLINE - Academic</collection><jtitle>Ecological applications</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hogg, Edward H.</au><au>Lieffers, Victor J.</au><au>Wein, Ross W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Potential carbon losses from peat profiles: effects of temperature, drought cycles, and fire</atitle><jtitle>Ecological applications</jtitle><addtitle>Ecol Appl</addtitle><date>1992-08</date><risdate>1992</risdate><volume>2</volume><issue>3</issue><spage>298</spage><epage>306</epage><pages>298-306</pages><issn>1051-0761</issn><eissn>1939-5582</eissn><abstract>Global warming and the resultant increase in evapotranspiration might lead to lowered water tables in peatlands and an increase in fire frequency. The objective of this study was to investigate some of the potential effects of these changes on peat decomposition. Dry mass losses and emissions of CO"2 and CH"4 from peat samples taken from three depth layers (0-10, 10-20, and 30-40 cm) of a black spruce peatland were measured in the laboratory at 8@?, 16@?, and 24@?C under two moisture treatments. Effects of deep peat fire on decomposition were also simulated by burning the upper layer (0-10 cm) of peat and adding the ash to peat samples from the 10-20 cm layer. CH"4 release averaged <1% of total carbon loss in flooded samples. Release of CO"2 was 4-9 times greater from the 0-10 cm layer than from the 30-40 cm layer. After 120 d, the 30-40 cm layer had lost <1% of its original dry mass in all treatments. Higher temperatures strongly promoted decomposition of samples exposed to drying cycles but had little effect on decomposition of continuously flooded samples. Ash addition had variable effects on CO"2 emissions but may have promoted CH"4 production. It is suggested that in certain situations, global warming may not cause appreciable increases in carbon loss from peat deposits. The results indicate that some deeper peats are resistant to decay even when exposed to warm, aerobic conditions. However, further experimental work is needed to predict the long-term response of peat deposits to changes in water levels in different peatland types.</abstract><cop>United States</cop><pub>The Ecological Society of America</pub><pmid>27759264</pmid><doi>10.2307/1941863</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Ecological applications, 1992-08, Vol.2 (3), p.298-306 |
| issn | 1051-0761 1939-5582 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1835492824 |
| source | Jstor Complete Legacy |
| subjects | ALBERTA CADENA RESPIRATORIA CAMBIO CLIMATICO CARBON DIOXIDE Carbon dioxide emissions CHAINE RESPIRATOIRE CLIMATIC CHANGE DECOMPOSITION DEGRADACION DEGRADATION DIOXIDO DE CARBONO DIOXYDE DE CARBONE DISPONIBILIDAD DEL AGUA DROUGHT Drying EAU DISPONIBLE EFECTO INVERNADERO EFFET DE SERRE FENS FERMENTACION METANICA FERMENTATION METHANIQUE FIRES FLORA DEL SUELO FLORE DU SOL Freshwater GLOBAL WARMING GREENHOUSE EFFECT INCENDIE INCENDIOS LAND METANO METHANE METHANE FERMENTATION PEAT PEATLAND Peatlands Pollutant emissions RESPIRATION RESPIRATORY CHAIN SECHERESSE SEQUIA SOIL FLORA TEMPERATURA TEMPERATURE TERRE TIERRAS TOURBE TOURBIERE TURBA TURBERA VARIATION DU CLIMAT VEGETACION VEGETATION WATER AVAILABILITY Water tables Wetland ecology |
| title | Potential carbon losses from peat profiles: effects of temperature, drought cycles, and fire |
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