Differential storm responses of dissolved and particulate organic carbon in a mountainous headwater stream, investigated by high-frequency, in situ optical measurements
Although land‐water carbon (C) transport represents a critical link in the global C cycle, rare attempts have been made to compare hydrologic controls over storm pulses of dissolved organic C (DOC) and particulate organic C (POC) in mountainous watersheds. An immersible UV/Vis spectrophotometer was...
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| Veröffentlicht in: | Journal of Geophysical Research: Biogeosciences 2012-09, Vol.117 (G3), p.n/a |
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| container_title | Journal of Geophysical Research: Biogeosciences |
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| creator | Jeong, Jong-Jin Bartsch, Svenja Fleckenstein, Jan H. Matzner, Egbert Tenhunen, John D. Lee, Sang Don Park, Seon Ki Park, Ji-Hyung |
| description | Although land‐water carbon (C) transport represents a critical link in the global C cycle, rare attempts have been made to compare hydrologic controls over storm pulses of dissolved organic C (DOC) and particulate organic C (POC) in mountainous watersheds. An immersible UV/Vis spectrophotometer was used to comparatively investigate the rapid storm responses of stream water DOC and POC in a small mountainous forested watershed in South Korea. High‐frequency measurements at 5‐min intervals during 42 hydrologic events, including monsoon storms and winter snowmelts, showed consistent patterns: POC concentrations were lower than DOC concentrations during base flow and small storm events but exceeded them during the peak flow periods of intense storm events. Although both the DOC and POC concentrations had hysteretic relationships with discharge, the POC concentrations showed larger increases and variations after crossing a threshold discharge on the rising limb of the storm hydrograph. Stronger responses to intense storms resulted in a disproportionately large export of POC at high flow, whereas a large portion of the total DOC flux was exported under prevailing low‐flow conditions. The results demonstrate the potential of in situ optical measurements for investigating fine‐resolution dynamics of the DOC and POC export during storm events. Stronger storm responses of the POC export compared to the limited response range of the DOC export suggest that erosion‐induced POC export will become more important as a major pathway for the hydrologic soil C loss from mountainous watersheds in response to an increasing occurrence of extreme storm events.
Key Points
In situ optical monitoring captured differential storm responses of DOC and POC
POC export was more variable on rising discharge than limited DOC responses
Strong storm responses lead to disproportionately large POC export at high flow |
| doi_str_mv | 10.1029/2012JG001999 |
| format | Article |
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Key Points
In situ optical monitoring captured differential storm responses of DOC and POC
POC export was more variable on rising discharge than limited DOC responses
Strong storm responses lead to disproportionately large POC export at high flow</description><identifier>ISSN: 0148-0227</identifier><identifier>EISSN: 2156-2202</identifier><identifier>DOI: 10.1029/2012JG001999</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>dissolved organic carbon ; Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; extreme events ; in situ sensors ; mountainous watersheds ; particulate organic carbon ; soil carbon loss</subject><ispartof>Journal of Geophysical Research: Biogeosciences, 2012-09, Vol.117 (G3), p.n/a</ispartof><rights>2012. American Geophysical Union. All Rights Reserved.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4544-62d10194cc398d2eafcda36034bccd6bada940c652264ce65a58cdd113013fb3</citedby><cites>FETCH-LOGICAL-c4544-62d10194cc398d2eafcda36034bccd6bada940c652264ce65a58cdd113013fb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2012JG001999$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2012JG001999$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,1427,11493,27901,27902,45550,45551,46384,46443,46808,46867</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26506965$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Jeong, Jong-Jin</creatorcontrib><creatorcontrib>Bartsch, Svenja</creatorcontrib><creatorcontrib>Fleckenstein, Jan H.</creatorcontrib><creatorcontrib>Matzner, Egbert</creatorcontrib><creatorcontrib>Tenhunen, John D.</creatorcontrib><creatorcontrib>Lee, Sang Don</creatorcontrib><creatorcontrib>Park, Seon Ki</creatorcontrib><creatorcontrib>Park, Ji-Hyung</creatorcontrib><title>Differential storm responses of dissolved and particulate organic carbon in a mountainous headwater stream, investigated by high-frequency, in situ optical measurements</title><title>Journal of Geophysical Research: Biogeosciences</title><addtitle>J. Geophys. Res</addtitle><description>Although land‐water carbon (C) transport represents a critical link in the global C cycle, rare attempts have been made to compare hydrologic controls over storm pulses of dissolved organic C (DOC) and particulate organic C (POC) in mountainous watersheds. An immersible UV/Vis spectrophotometer was used to comparatively investigate the rapid storm responses of stream water DOC and POC in a small mountainous forested watershed in South Korea. High‐frequency measurements at 5‐min intervals during 42 hydrologic events, including monsoon storms and winter snowmelts, showed consistent patterns: POC concentrations were lower than DOC concentrations during base flow and small storm events but exceeded them during the peak flow periods of intense storm events. Although both the DOC and POC concentrations had hysteretic relationships with discharge, the POC concentrations showed larger increases and variations after crossing a threshold discharge on the rising limb of the storm hydrograph. Stronger responses to intense storms resulted in a disproportionately large export of POC at high flow, whereas a large portion of the total DOC flux was exported under prevailing low‐flow conditions. The results demonstrate the potential of in situ optical measurements for investigating fine‐resolution dynamics of the DOC and POC export during storm events. Stronger storm responses of the POC export compared to the limited response range of the DOC export suggest that erosion‐induced POC export will become more important as a major pathway for the hydrologic soil C loss from mountainous watersheds in response to an increasing occurrence of extreme storm events.
Key Points
In situ optical monitoring captured differential storm responses of DOC and POC
POC export was more variable on rising discharge than limited DOC responses
Strong storm responses lead to disproportionately large POC export at high flow</description><subject>dissolved organic carbon</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>extreme events</subject><subject>in situ sensors</subject><subject>mountainous watersheds</subject><subject>particulate organic carbon</subject><subject>soil carbon loss</subject><issn>0148-0227</issn><issn>2156-2202</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kEFv1DAQhS0EEqvSW3-AL9wasB3HuzmiFgLVQiVUqb1FE3uya0js4Ela9h_xM3G1qOLUuVgaf-_N02PsTIp3Uqj6vRJSXTVCyLquX7CVkpUplBLqJVsJqTeFUGr9mp0S_RB5dGW0kCv259L3PSYMs4eB0xzTyBPSFAMh8dhz54nicI-OQ3B8gjR7uwwwI49pB8FbbiF1MXAfOPAxLmEGH-JCfI_gHjKYsm1CGM8zco80-11eOt4d-N7v9kWf8NeCwR4e_zn5eeFxykdynBGBloRjTkdv2KseBsLTf-8Ju_n08ebic7G9br5cfNgWVldaF0Y5mSvQ1pb1ximE3joojSh1Z60zHTiotbCmUspoi6aCamOdk7IUsuy78oSdH21tikQJ-3ZKfoR0aKVoH3tu_-8542-P-ASUE_cJgvX0pFGmEqY2VebkkXvwAx6e9Wyvmu9NrXXWFEeNpxl_P2kg_WzNulxX7e23pr2UX_XtVtTtXfkXYiSfYQ</recordid><startdate>201209</startdate><enddate>201209</enddate><creator>Jeong, Jong-Jin</creator><creator>Bartsch, Svenja</creator><creator>Fleckenstein, Jan H.</creator><creator>Matzner, Egbert</creator><creator>Tenhunen, John D.</creator><creator>Lee, Sang Don</creator><creator>Park, Seon Ki</creator><creator>Park, Ji-Hyung</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>201209</creationdate><title>Differential storm responses of dissolved and particulate organic carbon in a mountainous headwater stream, investigated by high-frequency, in situ optical measurements</title><author>Jeong, Jong-Jin ; Bartsch, Svenja ; Fleckenstein, Jan H. ; Matzner, Egbert ; Tenhunen, John D. ; Lee, Sang Don ; Park, Seon Ki ; Park, Ji-Hyung</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4544-62d10194cc398d2eafcda36034bccd6bada940c652264ce65a58cdd113013fb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>dissolved organic carbon</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>extreme events</topic><topic>in situ sensors</topic><topic>mountainous watersheds</topic><topic>particulate organic carbon</topic><topic>soil carbon loss</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jeong, Jong-Jin</creatorcontrib><creatorcontrib>Bartsch, Svenja</creatorcontrib><creatorcontrib>Fleckenstein, Jan H.</creatorcontrib><creatorcontrib>Matzner, Egbert</creatorcontrib><creatorcontrib>Tenhunen, John D.</creatorcontrib><creatorcontrib>Lee, Sang Don</creatorcontrib><creatorcontrib>Park, Seon Ki</creatorcontrib><creatorcontrib>Park, Ji-Hyung</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of Geophysical Research: Biogeosciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jeong, Jong-Jin</au><au>Bartsch, Svenja</au><au>Fleckenstein, Jan H.</au><au>Matzner, Egbert</au><au>Tenhunen, John D.</au><au>Lee, Sang Don</au><au>Park, Seon Ki</au><au>Park, Ji-Hyung</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Differential storm responses of dissolved and particulate organic carbon in a mountainous headwater stream, investigated by high-frequency, in situ optical measurements</atitle><jtitle>Journal of Geophysical Research: Biogeosciences</jtitle><addtitle>J. Geophys. Res</addtitle><date>2012-09</date><risdate>2012</risdate><volume>117</volume><issue>G3</issue><epage>n/a</epage><issn>0148-0227</issn><eissn>2156-2202</eissn><abstract>Although land‐water carbon (C) transport represents a critical link in the global C cycle, rare attempts have been made to compare hydrologic controls over storm pulses of dissolved organic C (DOC) and particulate organic C (POC) in mountainous watersheds. An immersible UV/Vis spectrophotometer was used to comparatively investigate the rapid storm responses of stream water DOC and POC in a small mountainous forested watershed in South Korea. High‐frequency measurements at 5‐min intervals during 42 hydrologic events, including monsoon storms and winter snowmelts, showed consistent patterns: POC concentrations were lower than DOC concentrations during base flow and small storm events but exceeded them during the peak flow periods of intense storm events. Although both the DOC and POC concentrations had hysteretic relationships with discharge, the POC concentrations showed larger increases and variations after crossing a threshold discharge on the rising limb of the storm hydrograph. Stronger responses to intense storms resulted in a disproportionately large export of POC at high flow, whereas a large portion of the total DOC flux was exported under prevailing low‐flow conditions. The results demonstrate the potential of in situ optical measurements for investigating fine‐resolution dynamics of the DOC and POC export during storm events. Stronger storm responses of the POC export compared to the limited response range of the DOC export suggest that erosion‐induced POC export will become more important as a major pathway for the hydrologic soil C loss from mountainous watersheds in response to an increasing occurrence of extreme storm events.
Key Points
In situ optical monitoring captured differential storm responses of DOC and POC
POC export was more variable on rising discharge than limited DOC responses
Strong storm responses lead to disproportionately large POC export at high flow</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2012JG001999</doi><tpages>13</tpages></addata></record> |
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| source | Wiley Free Content; Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Alma/SFX Local Collection |
| subjects | dissolved organic carbon Earth sciences Earth, ocean, space Exact sciences and technology extreme events in situ sensors mountainous watersheds particulate organic carbon soil carbon loss |
| title | Differential storm responses of dissolved and particulate organic carbon in a mountainous headwater stream, investigated by high-frequency, in situ optical measurements |
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