TERRESTRIAL C SEQUESTRATION AT ELEVATED CO2 AND TEMPERATURE: THE ROLE OF DISSOLVED ORGANIC N LOSS
We used a simple model of carbon–nitrogen (C–N) interactions in terrestrial ecosystems to examine the responses to elevated CO2 and to elevated CO2 plus warming in ecosystems that had the same total nitrogen loss but that differed in the ratio of dissolved organic nitrogen (DON) to dissolved inorgan...
Gespeichert in:
| Veröffentlicht in: | Ecological applications 2005-02, Vol.15 (1), p.71-86 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 86 |
|---|---|
| container_issue | 1 |
| container_start_page | 71 |
| container_title | Ecological applications |
| container_volume | 15 |
| creator | Rastetter, Edward B. Perakis, Steven S. Shaver, Gaius R. Ågren, Göran I. |
| description | We used a simple model of carbon–nitrogen (C–N) interactions in terrestrial ecosystems to examine the responses to elevated CO2 and to elevated CO2 plus warming in ecosystems that had the same total nitrogen loss but that differed in the ratio of dissolved organic nitrogen (DON) to dissolved inorganic nitrogen (DIN) loss. We postulate that DIN losses can be curtailed by higher N demand in response to elevated CO2, but that DON losses cannot. We also examined simulations in which DON losses were held constant, were proportional to the amount of soil organic matter, were proportional to the soil C:N ratio, or were proportional to the rate of decomposition. We found that the mode of N loss made little difference to the short‐term ( |
| doi_str_mv | 10.1890/03-5303 |
| format | Article |
| fullrecord | <record><control><sourceid>wiley</sourceid><recordid>TN_cdi_wiley_primary_10_1890_03_5303_EAP200515171</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EAP200515171</sourcerecordid><originalsourceid>FETCH-LOGICAL-s1971-d16315d8dd85db26484909ce1048938f62d083374e2d0bf64e3c84544b13540f3</originalsourceid><addsrcrecordid>eNotkN1Kw0AQRhdRsFbxFeYFojP7k-x6tyTbNrBma7LtbWibBCoVpLmQvr0pOjdzPr5hLg5jz4QvpA2-okiUQHHDZmSESZTS_HZiVJRgltI9exjHT5yGcz5ju-jq2jWxLq2HHBr3sbkmG8tQgY3gvNva6ArIAwdbFRDd-9pN_aZ2bxBXDurgHYQFFGXTBL-dTkO9tFWZQwU-NM0juxt2p7F_-t9ztlm4mK8SH5Zlbn0yksko6SgVpDrddVp1e55KLQ2aQ08otRF6SHmHWohM9hPsh1T24qClknJPQkkcxJzR39-f46m_tN_n49fufGkJ26uWFkV71dI6u-Y4yVCUkfgFIhhM1Q</addsrcrecordid><sourcetype>Publisher</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>TERRESTRIAL C SEQUESTRATION AT ELEVATED CO2 AND TEMPERATURE: THE ROLE OF DISSOLVED ORGANIC N LOSS</title><source>Wiley-Blackwell Journals</source><source>JSTOR</source><creator>Rastetter, Edward B. ; Perakis, Steven S. ; Shaver, Gaius R. ; Ågren, Göran I.</creator><creatorcontrib>Rastetter, Edward B. ; Perakis, Steven S. ; Shaver, Gaius R. ; Ågren, Göran I.</creatorcontrib><description>We used a simple model of carbon–nitrogen (C–N) interactions in terrestrial ecosystems to examine the responses to elevated CO2 and to elevated CO2 plus warming in ecosystems that had the same total nitrogen loss but that differed in the ratio of dissolved organic nitrogen (DON) to dissolved inorganic nitrogen (DIN) loss. We postulate that DIN losses can be curtailed by higher N demand in response to elevated CO2, but that DON losses cannot. We also examined simulations in which DON losses were held constant, were proportional to the amount of soil organic matter, were proportional to the soil C:N ratio, or were proportional to the rate of decomposition. We found that the mode of N loss made little difference to the short‐term (<60 years) rate of carbon sequestration by the ecosystem, but high DON losses resulted in much lower carbon sequestration in the long term than did low DON losses. In the short term, C sequestration was fueled by an internal redistribution of N from soils to vegetation and by increases in the C:N ratio of soils and vegetation. This sequestration was about three times larger with elevated CO2 and warming than with elevated CO2 alone. After year 60, C sequestration was fueled by a net accumulation of N in the ecosystem, and the rate of sequestration was about the same with elevated CO2 and warming as with elevated CO2 alone. With high DON losses, the ecosystem either sequestered C slowly after year 60 (when DON losses were constant or proportional to soil organic matter) or lost C (when DON losses were proportional to the soil C:N ratio or to decomposition). We conclude that changes in long‐term C sequestration depend not only on the magnitude of N losses, but also on the form of those losses.</description><identifier>ISSN: 1051-0761</identifier><identifier>EISSN: 1939-5582</identifier><identifier>DOI: 10.1890/03-5303</identifier><language>eng</language><publisher>Ecological Society of America</publisher><subject>carbon sequestration ; carbon–nitrogen interactions ; dissolved inorganic nitrogen ; dissolved organic nitrogen ; ecosystem models ; global climate change ; soil C:N ; terrestrial ecosystems</subject><ispartof>Ecological applications, 2005-02, Vol.15 (1), p.71-86</ispartof><rights>2005 by the Ecological Society of America</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1890%2F03-5303$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1890%2F03-5303$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Rastetter, Edward B.</creatorcontrib><creatorcontrib>Perakis, Steven S.</creatorcontrib><creatorcontrib>Shaver, Gaius R.</creatorcontrib><creatorcontrib>Ågren, Göran I.</creatorcontrib><title>TERRESTRIAL C SEQUESTRATION AT ELEVATED CO2 AND TEMPERATURE: THE ROLE OF DISSOLVED ORGANIC N LOSS</title><title>Ecological applications</title><description>We used a simple model of carbon–nitrogen (C–N) interactions in terrestrial ecosystems to examine the responses to elevated CO2 and to elevated CO2 plus warming in ecosystems that had the same total nitrogen loss but that differed in the ratio of dissolved organic nitrogen (DON) to dissolved inorganic nitrogen (DIN) loss. We postulate that DIN losses can be curtailed by higher N demand in response to elevated CO2, but that DON losses cannot. We also examined simulations in which DON losses were held constant, were proportional to the amount of soil organic matter, were proportional to the soil C:N ratio, or were proportional to the rate of decomposition. We found that the mode of N loss made little difference to the short‐term (<60 years) rate of carbon sequestration by the ecosystem, but high DON losses resulted in much lower carbon sequestration in the long term than did low DON losses. In the short term, C sequestration was fueled by an internal redistribution of N from soils to vegetation and by increases in the C:N ratio of soils and vegetation. This sequestration was about three times larger with elevated CO2 and warming than with elevated CO2 alone. After year 60, C sequestration was fueled by a net accumulation of N in the ecosystem, and the rate of sequestration was about the same with elevated CO2 and warming as with elevated CO2 alone. With high DON losses, the ecosystem either sequestered C slowly after year 60 (when DON losses were constant or proportional to soil organic matter) or lost C (when DON losses were proportional to the soil C:N ratio or to decomposition). We conclude that changes in long‐term C sequestration depend not only on the magnitude of N losses, but also on the form of those losses.</description><subject>carbon sequestration</subject><subject>carbon–nitrogen interactions</subject><subject>dissolved inorganic nitrogen</subject><subject>dissolved organic nitrogen</subject><subject>ecosystem models</subject><subject>global climate change</subject><subject>soil C:N</subject><subject>terrestrial ecosystems</subject><issn>1051-0761</issn><issn>1939-5582</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNotkN1Kw0AQRhdRsFbxFeYFojP7k-x6tyTbNrBma7LtbWibBCoVpLmQvr0pOjdzPr5hLg5jz4QvpA2-okiUQHHDZmSESZTS_HZiVJRgltI9exjHT5yGcz5ju-jq2jWxLq2HHBr3sbkmG8tQgY3gvNva6ArIAwdbFRDd-9pN_aZ2bxBXDurgHYQFFGXTBL-dTkO9tFWZQwU-NM0juxt2p7F_-t9ztlm4mK8SH5Zlbn0yksko6SgVpDrddVp1e55KLQ2aQ08otRF6SHmHWohM9hPsh1T24qClknJPQkkcxJzR39-f46m_tN_n49fufGkJ26uWFkV71dI6u-Y4yVCUkfgFIhhM1Q</recordid><startdate>200502</startdate><enddate>200502</enddate><creator>Rastetter, Edward B.</creator><creator>Perakis, Steven S.</creator><creator>Shaver, Gaius R.</creator><creator>Ågren, Göran I.</creator><general>Ecological Society of America</general><scope/></search><sort><creationdate>200502</creationdate><title>TERRESTRIAL C SEQUESTRATION AT ELEVATED CO2 AND TEMPERATURE: THE ROLE OF DISSOLVED ORGANIC N LOSS</title><author>Rastetter, Edward B. ; Perakis, Steven S. ; Shaver, Gaius R. ; Ågren, Göran I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-s1971-d16315d8dd85db26484909ce1048938f62d083374e2d0bf64e3c84544b13540f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>carbon sequestration</topic><topic>carbon–nitrogen interactions</topic><topic>dissolved inorganic nitrogen</topic><topic>dissolved organic nitrogen</topic><topic>ecosystem models</topic><topic>global climate change</topic><topic>soil C:N</topic><topic>terrestrial ecosystems</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rastetter, Edward B.</creatorcontrib><creatorcontrib>Perakis, Steven S.</creatorcontrib><creatorcontrib>Shaver, Gaius R.</creatorcontrib><creatorcontrib>Ågren, Göran I.</creatorcontrib><jtitle>Ecological applications</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rastetter, Edward B.</au><au>Perakis, Steven S.</au><au>Shaver, Gaius R.</au><au>Ågren, Göran I.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>TERRESTRIAL C SEQUESTRATION AT ELEVATED CO2 AND TEMPERATURE: THE ROLE OF DISSOLVED ORGANIC N LOSS</atitle><jtitle>Ecological applications</jtitle><date>2005-02</date><risdate>2005</risdate><volume>15</volume><issue>1</issue><spage>71</spage><epage>86</epage><pages>71-86</pages><issn>1051-0761</issn><eissn>1939-5582</eissn><abstract>We used a simple model of carbon–nitrogen (C–N) interactions in terrestrial ecosystems to examine the responses to elevated CO2 and to elevated CO2 plus warming in ecosystems that had the same total nitrogen loss but that differed in the ratio of dissolved organic nitrogen (DON) to dissolved inorganic nitrogen (DIN) loss. We postulate that DIN losses can be curtailed by higher N demand in response to elevated CO2, but that DON losses cannot. We also examined simulations in which DON losses were held constant, were proportional to the amount of soil organic matter, were proportional to the soil C:N ratio, or were proportional to the rate of decomposition. We found that the mode of N loss made little difference to the short‐term (<60 years) rate of carbon sequestration by the ecosystem, but high DON losses resulted in much lower carbon sequestration in the long term than did low DON losses. In the short term, C sequestration was fueled by an internal redistribution of N from soils to vegetation and by increases in the C:N ratio of soils and vegetation. This sequestration was about three times larger with elevated CO2 and warming than with elevated CO2 alone. After year 60, C sequestration was fueled by a net accumulation of N in the ecosystem, and the rate of sequestration was about the same with elevated CO2 and warming as with elevated CO2 alone. With high DON losses, the ecosystem either sequestered C slowly after year 60 (when DON losses were constant or proportional to soil organic matter) or lost C (when DON losses were proportional to the soil C:N ratio or to decomposition). We conclude that changes in long‐term C sequestration depend not only on the magnitude of N losses, but also on the form of those losses.</abstract><pub>Ecological Society of America</pub><doi>10.1890/03-5303</doi><tpages>16</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1051-0761 |
| ispartof | Ecological applications, 2005-02, Vol.15 (1), p.71-86 |
| issn | 1051-0761 1939-5582 |
| language | eng |
| recordid | cdi_wiley_primary_10_1890_03_5303_EAP200515171 |
| source | Wiley-Blackwell Journals; JSTOR |
| subjects | carbon sequestration carbon–nitrogen interactions dissolved inorganic nitrogen dissolved organic nitrogen ecosystem models global climate change soil C:N terrestrial ecosystems |
| title | TERRESTRIAL C SEQUESTRATION AT ELEVATED CO2 AND TEMPERATURE: THE ROLE OF DISSOLVED ORGANIC N LOSS |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-07T17%3A03%3A47IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-wiley&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=TERRESTRIAL%20C%20SEQUESTRATION%20AT%20ELEVATED%20CO2%20AND%20TEMPERATURE:%20THE%20ROLE%20OF%20DISSOLVED%20ORGANIC%20N%20LOSS&rft.jtitle=Ecological%20applications&rft.au=Rastetter,%20Edward%20B.&rft.date=2005-02&rft.volume=15&rft.issue=1&rft.spage=71&rft.epage=86&rft.pages=71-86&rft.issn=1051-0761&rft.eissn=1939-5582&rft_id=info:doi/10.1890/03-5303&rft_dat=%3Cwiley%3EEAP200515171%3C/wiley%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |