{"id":673,"date":"2014-09-17T10:13:28","date_gmt":"2014-09-17T08:13:28","guid":{"rendered":"http:\/\/ist.blogs.inra.fr\/afs\/?p=673"},"modified":"2014-10-02T12:00:17","modified_gmt":"2014-10-02T10:00:17","slug":"disturbances-in-water-relations-of-european-beech-during-an-extreme-drought-2","status":"publish","type":"post","link":"https:\/\/ist.blogs.inrae.fr\/afs\/2014\/09\/17\/disturbances-in-water-relations-of-european-beech-during-an-extreme-drought-2\/","title":{"rendered":"Disturbances in water relations of European beech  during an extreme drought"},"content":{"rendered":"<script type='text\/javascript' src='https:\/\/d1bxh8uas1mnw7.cloudfront.net\/assets\/embed.js'><\/script><h4 class=\"Heading\"><a href=\"https:\/\/ist.blogs.inra.fr\/afs\/wp-content\/uploads\/sites\/5\/2014\/09\/BD-article-mp.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-680\" src=\"https:\/\/ist.blogs.inra.fr\/afs\/wp-content\/uploads\/sites\/5\/2014\/09\/BD-article-mp.jpg\" alt=\"BD-article-mp\" width=\"600\" height=\"230\" \/><\/a><\/h4>\n<h4 class=\"Abstract\">Marianne PEIFFER, Nathalie BR\u00c9DA, Vincent BADEAU, Andr\u00e9 GRANIER<\/h4>\n<address class=\"Heading\">\u00a0<\/address>\n<address class=\"Heading\">INRA, UMR 1137 Ecologie et Ecophysiologie Foresti\u00e8res, 54280 Champenoux, France<\/address>\n<p><a href=\"http:\/\/link.springer.com\/article\/10.1007\/s13595-014-0383-3\">Visit the Annals of Forest Science Website to download the paper <\/a><\/p>\n<p class=\"Para\" style=\"padding-left: 30px;text-align: justify\">In the context of a probable increase in intensity and frequency of extreme summer drought events, a better understanding of the key processes involved in water relations is needed to improve the theoretical foundations of predictive process-based models.<\/p>\n<div id=\"ASec2\" class=\"AbstractSection\" style=\"padding-left: 30px;text-align: justify\">\n<p class=\"Para\">This paper aims to analyse how temperate deciduous trees cope with water shortage. The exceptional summer drought of 2003 in Europe provided an opportunity to monitor stomatal conductance and twig water potential in European beech (<em><span class=\"EmphasisTypeItalic\">Fagus sylvatica<\/span><\/em> L.) at predawn and midday and to analyse variations with respect to leaf height within the canopy. By comparing our field measurements of twig water potential to values found in the literature, we confirmed the strong impact of soil water shortage on crown water relations.<\/p>\n<\/div>\n<div id=\"ASec4\" class=\"AbstractSection\" style=\"padding-left: 30px\">\n<div class=\"Para\" style=\"text-align: justify\">This paper shows that <span style=\"color: #003366\">(1)<\/span> the vertical gradient of stomatal conductance within the crown disappeared under extreme soil water depletion; <span style=\"color: #003366\">(2)<\/span> at maximum drought intensity, predawn twig water potential (<span class=\"EmphasisTypeItalic\">\u03c8<\/span><em><sub>pd<\/sub><\/em>) reached \u22122.3\u00a0MPa at a height of 14\u00a0m in the crown and \u22122.0\u00a0MPa at a height of 10\u00a0m. The significant differences in <span class=\"EmphasisTypeItalic\">\u03c8<\/span><em><sub>pd<\/sub><\/em> between the two measurement heights in the canopy may be due to night transpiration;<span style=\"color: #003366\"> (3)<\/span> there was a close relationship between predawn twig water potential and relative extractable soil water; <span style=\"color: #003366\">(4)<\/span> as drought conditions intensified, there was a close relationship between canopy radiation interception and predawn water potential, as estimated daily from relative extractable soil water.<\/div>\n<\/div>\n<div class=\"Heading\">\n<div class=\"Heading\"><\/div>\n<p>Keywords<\/p><\/div>\n<div class=\"KeywordGroup\">\n<p style=\"text-align: justify;padding-left: 30px\"><em><span class=\"Keyword\"> <span class=\"EmphasisTypeItalic\">Fagus sylvatica,<\/span> <\/span><\/em> <span class=\"Keyword\">Stomatal conductance,<\/span> <span class=\"Keyword\">Leaf water potential,<\/span> <span class=\"Keyword\">Soil water deficit,<\/span> <span class=\"Keyword\">Crown position,<\/span> <span class=\"Keyword\">Seasonal pattern<\/span><\/p>\n<\/div>\n<div class='altmetric-embed' data-badge-type='donut' data-doi='10.1007\/s13595-014-0383-3'  style='float: right; ' ><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Marianne PEIFFER, Nathalie BR\u00c9DA, Vincent BADEAU, Andr\u00e9 GRANIER \u00a0 INRA, UMR 1137 Ecologie et Ecophysiologie Foresti\u00e8res, 54280 Champenoux, France Visit the Annals of Forest Science Website to download the paper In the context of a probable increase in intensity and frequency of extreme summer drought events, a better understanding of the key processes involved in [&hellip;]<\/p>\n","protected":false},"author":34,"featured_media":680,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[64,60,62,65,63,61],"class_list":["post-673","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research-paper","tag-crown-position","tag-fagus-sylvatica","tag-leaf-water-potential","tag-seasonal-pattern","tag-soil-water-deficit","tag-stomatal-conductance","cat-15-id","has_thumb"],"_links":{"self":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/673","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/users\/34"}],"replies":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/comments?post=673"}],"version-history":[{"count":0,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/673\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/media\/680"}],"wp:attachment":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/media?parent=673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/categories?post=673"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/tags?post=673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}