Carbon reserves and canopy defoliation determine the recovery of Scots pine 4 yr after a drought episode
Severe drought may increase physiological stress on long-lived woody vegetation, occasionally leading to mortality of overstory trees. Little is known about the factors determining tree survival and subsequent recovery after drought. We used structural equation modeling to analyse the recovery of Sc...
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Veröffentlicht in: | The New phytologist 2011-05, Vol.190 (3), p.750-759 |
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description | Severe drought may increase physiological stress on long-lived woody vegetation, occasionally leading to mortality of overstory trees. Little is known about the factors determining tree survival and subsequent recovery after drought. We used structural equation modeling to analyse the recovery of Scots pine (Pinus sylvestris) trees 4 yr after an extreme drought episode occurred in 2004-2005 in north-east Spain. Measured variables included the amount of green foliage, carbon reserves in the stem, mistletoe (Viscum album) infection, needle physiological performance and stem radial growth before, during and after the drought event. The amount of green leaves and the levels of carbon reserves were related to the impact of drought on radial growth, and mutually correlated. However, our most likely path model indicated that current depletion of carbon reserves was a result of reduced photosynthetic tissue. This relationship potentially constitutes a feedback limiting tree recovery. In addition, mistletoe infection reduced leaf nitrogen content, negatively affecting growth. Finally, successive surveys in 2009-2010 showed a direct association between carbon reserves depletion and drought-induced mortality. Severe drought events may induce long-term physiological disorders associated with canopy defoliation and depletion of carbon reserves, leading to prolonged recovery of surviving individuals and, eventually, to delayed tree death. |
doi_str_mv | 10.1111/j.1469-8137.2010.03628.x |
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Little is known about the factors determining tree survival and subsequent recovery after drought. We used structural equation modeling to analyse the recovery of Scots pine (Pinus sylvestris) trees 4 yr after an extreme drought episode occurred in 2004-2005 in north-east Spain. Measured variables included the amount of green foliage, carbon reserves in the stem, mistletoe (Viscum album) infection, needle physiological performance and stem radial growth before, during and after the drought event. The amount of green leaves and the levels of carbon reserves were related to the impact of drought on radial growth, and mutually correlated. However, our most likely path model indicated that current depletion of carbon reserves was a result of reduced photosynthetic tissue. This relationship potentially constitutes a feedback limiting tree recovery. In addition, mistletoe infection reduced leaf nitrogen content, negatively affecting growth. Finally, successive surveys in 2009-2010 showed a direct association between carbon reserves depletion and drought-induced mortality. Severe drought events may induce long-term physiological disorders associated with canopy defoliation and depletion of carbon reserves, leading to prolonged recovery of surviving individuals and, eventually, to delayed tree death.</description><identifier>ISSN: 0028-646X</identifier><identifier>EISSN: 1469-8137</identifier><identifier>DOI: 10.1111/j.1469-8137.2010.03628.x</identifier><identifier>PMID: 21261625</identifier><language>eng</language><publisher>Oxford, UK: John Wiley & Sons</publisher><subject>Canopies ; Canopy ; canopy defoliation ; Carbohydrates - analysis ; Carbon ; Carbon - metabolism ; carbon reserves ; Defoliation ; Depletion ; Drought ; Droughts ; Environmental impact ; Foliage ; Forest trees ; Growth ; Infections ; Leaves ; Mathematical models ; mistletoe (Viscum album) ; Models, Biological ; Mortality ; Multivariate statistical analysis ; Nitrogen ; Photosynthesis ; Physiology ; Pine ; Pine needles ; Pine trees ; Pinus sylvestris ; Pinus sylvestris - growth & development ; Pinus sylvestris - metabolism ; Pinus sylvestris - physiology ; Plant diseases ; Plant Leaves - growth & development ; Plant Leaves - metabolism ; Plant Stems - metabolism ; Plants ; Potential resources ; Recovery ; Regeneration - physiology ; Reserves ; Scots pine (Pinus sylvestris) ; Stems ; Stress (physiology) ; Surveys ; Survival ; tree mortality ; Trees ; Woody plants</subject><ispartof>The New phytologist, 2011-05, Vol.190 (3), p.750-759</ispartof><rights>Copyright © 2011 New Phytologist Trust</rights><rights>2011 The Authors. New Phytologist © 2011 New Phytologist Trust</rights><rights>2011 The Authors. New Phytologist © 2011 New Phytologist Trust.</rights><rights>Copyright Wiley Subscription Services, Inc. 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Little is known about the factors determining tree survival and subsequent recovery after drought. We used structural equation modeling to analyse the recovery of Scots pine (Pinus sylvestris) trees 4 yr after an extreme drought episode occurred in 2004-2005 in north-east Spain. Measured variables included the amount of green foliage, carbon reserves in the stem, mistletoe (Viscum album) infection, needle physiological performance and stem radial growth before, during and after the drought event. The amount of green leaves and the levels of carbon reserves were related to the impact of drought on radial growth, and mutually correlated. However, our most likely path model indicated that current depletion of carbon reserves was a result of reduced photosynthetic tissue. This relationship potentially constitutes a feedback limiting tree recovery. In addition, mistletoe infection reduced leaf nitrogen content, negatively affecting growth. Finally, successive surveys in 2009-2010 showed a direct association between carbon reserves depletion and drought-induced mortality. Severe drought events may induce long-term physiological disorders associated with canopy defoliation and depletion of carbon reserves, leading to prolonged recovery of surviving individuals and, eventually, to delayed tree death.</description><subject>Canopies</subject><subject>Canopy</subject><subject>canopy defoliation</subject><subject>Carbohydrates - analysis</subject><subject>Carbon</subject><subject>Carbon - metabolism</subject><subject>carbon reserves</subject><subject>Defoliation</subject><subject>Depletion</subject><subject>Drought</subject><subject>Droughts</subject><subject>Environmental impact</subject><subject>Foliage</subject><subject>Forest trees</subject><subject>Growth</subject><subject>Infections</subject><subject>Leaves</subject><subject>Mathematical models</subject><subject>mistletoe (Viscum album)</subject><subject>Models, Biological</subject><subject>Mortality</subject><subject>Multivariate statistical analysis</subject><subject>Nitrogen</subject><subject>Photosynthesis</subject><subject>Physiology</subject><subject>Pine</subject><subject>Pine needles</subject><subject>Pine trees</subject><subject>Pinus sylvestris</subject><subject>Pinus sylvestris - growth & development</subject><subject>Pinus sylvestris - metabolism</subject><subject>Pinus sylvestris - physiology</subject><subject>Plant diseases</subject><subject>Plant Leaves - growth & development</subject><subject>Plant Leaves - metabolism</subject><subject>Plant Stems - metabolism</subject><subject>Plants</subject><subject>Potential resources</subject><subject>Recovery</subject><subject>Regeneration - physiology</subject><subject>Reserves</subject><subject>Scots pine (Pinus sylvestris)</subject><subject>Stems</subject><subject>Stress (physiology)</subject><subject>Surveys</subject><subject>Survival</subject><subject>tree mortality</subject><subject>Trees</subject><subject>Woody plants</subject><issn>0028-646X</issn><issn>1469-8137</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkUFv1DAQhS1ERZfCTwBZ4sAp27ETz9oHDmgFLVJVkACJm-VNJmyibBzspDT_vg5bWokTvnjk-d6z_YYxLmAt0jpv16JAk2mRb9YS0inkKPX69glbPTSeshWA1BkW-OOUPY-xBQCjUD5jp1JIFCjViu23Lux8zwNFCjcUuesrXrreDzOvqPZd48Ym9SsaKRyanvi4p0SX_obCzH3Nv5Z-jHxYWgWfA3d1IrnjVfDTz_3IaWiir-gFO6ldF-nl_X7Gvn_88G17mV19vvi0fX-VlQUWOjMkjCkMKJ0-UplK7VAIyOuNzrUuSkQHGo0Qde1M6VRCUCuDkCpUgig_Y2-PvkPwvyaKoz00saSucz35KVqNEkEIvUnkm3_I1k-hT4-zUgmZAyqAROkjVQYfY6DaDqE5uDBbAXYZhm3tkrldMrfLMOyfYdjbJH19f8G0O1D1IPybfgLeHYHfTUfzfxvb6y-XS5X0r476No4-PPqblFah8_wOJIOgJg</recordid><startdate>201105</startdate><enddate>201105</enddate><creator>Galiano, L.</creator><creator>Martínez-Vilalta, J.</creator><creator>Lloret, F.</creator><general>John Wiley & Sons</general><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7SN</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H95</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope></search><sort><creationdate>201105</creationdate><title>Carbon reserves and canopy defoliation determine the recovery of Scots pine 4 yr after a drought episode</title><author>Galiano, L. ; Martínez-Vilalta, J. ; Lloret, F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4648-9e19949058146d9d5b61103f783884c66a086911ffa9ca56d968596056d651ee3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Canopies</topic><topic>Canopy</topic><topic>canopy defoliation</topic><topic>Carbohydrates - analysis</topic><topic>Carbon</topic><topic>Carbon - metabolism</topic><topic>carbon reserves</topic><topic>Defoliation</topic><topic>Depletion</topic><topic>Drought</topic><topic>Droughts</topic><topic>Environmental impact</topic><topic>Foliage</topic><topic>Forest trees</topic><topic>Growth</topic><topic>Infections</topic><topic>Leaves</topic><topic>Mathematical models</topic><topic>mistletoe (Viscum album)</topic><topic>Models, Biological</topic><topic>Mortality</topic><topic>Multivariate statistical analysis</topic><topic>Nitrogen</topic><topic>Photosynthesis</topic><topic>Physiology</topic><topic>Pine</topic><topic>Pine needles</topic><topic>Pine trees</topic><topic>Pinus sylvestris</topic><topic>Pinus sylvestris - growth & development</topic><topic>Pinus sylvestris - metabolism</topic><topic>Pinus sylvestris - physiology</topic><topic>Plant diseases</topic><topic>Plant Leaves - growth & development</topic><topic>Plant Leaves - metabolism</topic><topic>Plant Stems - metabolism</topic><topic>Plants</topic><topic>Potential resources</topic><topic>Recovery</topic><topic>Regeneration - physiology</topic><topic>Reserves</topic><topic>Scots pine (Pinus sylvestris)</topic><topic>Stems</topic><topic>Stress (physiology)</topic><topic>Surveys</topic><topic>Survival</topic><topic>tree mortality</topic><topic>Trees</topic><topic>Woody plants</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Galiano, L.</creatorcontrib><creatorcontrib>Martínez-Vilalta, J.</creatorcontrib><creatorcontrib>Lloret, F.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Ecology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>The New phytologist</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Galiano, L.</au><au>Martínez-Vilalta, J.</au><au>Lloret, F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Carbon reserves and canopy defoliation determine the recovery of Scots pine 4 yr after a drought episode</atitle><jtitle>The New phytologist</jtitle><addtitle>New Phytol</addtitle><date>2011-05</date><risdate>2011</risdate><volume>190</volume><issue>3</issue><spage>750</spage><epage>759</epage><pages>750-759</pages><issn>0028-646X</issn><eissn>1469-8137</eissn><abstract>Severe drought may increase physiological stress on long-lived woody vegetation, occasionally leading to mortality of overstory trees. Little is known about the factors determining tree survival and subsequent recovery after drought. We used structural equation modeling to analyse the recovery of Scots pine (Pinus sylvestris) trees 4 yr after an extreme drought episode occurred in 2004-2005 in north-east Spain. Measured variables included the amount of green foliage, carbon reserves in the stem, mistletoe (Viscum album) infection, needle physiological performance and stem radial growth before, during and after the drought event. The amount of green leaves and the levels of carbon reserves were related to the impact of drought on radial growth, and mutually correlated. However, our most likely path model indicated that current depletion of carbon reserves was a result of reduced photosynthetic tissue. This relationship potentially constitutes a feedback limiting tree recovery. In addition, mistletoe infection reduced leaf nitrogen content, negatively affecting growth. Finally, successive surveys in 2009-2010 showed a direct association between carbon reserves depletion and drought-induced mortality. Severe drought events may induce long-term physiological disorders associated with canopy defoliation and depletion of carbon reserves, leading to prolonged recovery of surviving individuals and, eventually, to delayed tree death.</abstract><cop>Oxford, UK</cop><pub>John Wiley & Sons</pub><pmid>21261625</pmid><doi>10.1111/j.1469-8137.2010.03628.x</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Canopies Canopy canopy defoliation Carbohydrates - analysis Carbon Carbon - metabolism carbon reserves Defoliation Depletion Drought Droughts Environmental impact Foliage Forest trees Growth Infections Leaves Mathematical models mistletoe (Viscum album) Models, Biological Mortality Multivariate statistical analysis Nitrogen Photosynthesis Physiology Pine Pine needles Pine trees Pinus sylvestris Pinus sylvestris - growth & development Pinus sylvestris - metabolism Pinus sylvestris - physiology Plant diseases Plant Leaves - growth & development Plant Leaves - metabolism Plant Stems - metabolism Plants Potential resources Recovery Regeneration - physiology Reserves Scots pine (Pinus sylvestris) Stems Stress (physiology) Surveys Survival tree mortality Trees Woody plants |
title | Carbon reserves and canopy defoliation determine the recovery of Scots pine 4 yr after a drought episode |
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