{"id":219,"date":"2015-02-13T21:45:37","date_gmt":"2015-02-13T21:45:37","guid":{"rendered":"https:\/\/optmix.efno.fr\/?page_id=219"},"modified":"2017-04-11T08:40:24","modified_gmt":"2017-04-11T08:40:24","slug":"experimental-scheme","status":"publish","type":"page","link":"https:\/\/optmix.efno.fr\/?page_id=219","title":{"rendered":"Experimental design"},"content":{"rendered":"<div id=\"attachment_438\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2015\/03\/RDI_modalites_18_03_2015_small.jpg\"><img aria-describedby=\"caption-attachment-438\" decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-438\" src=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2015\/03\/RDI_modalites_18_03_2015_small-300x300.jpg\" alt=\"RDI change over time for both density scenarios studied. For each scenario a target RDI has been defined (dotted line): &quot;dynamic scenario&quot; (RDI = 0.425) and &quot;conservative scenario&quot; (RDI = 0.7). The frequency of thinnings is given as an indication. RDI = relative density index = stand density \/ maximum stand density.\" width=\"300\" height=\"300\" srcset=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2015\/03\/RDI_modalites_18_03_2015_small-300x300.jpg 300w, https:\/\/optmix.efno.fr\/wp-content\/uploads\/2015\/03\/RDI_modalites_18_03_2015_small-150x150.jpg 150w, https:\/\/optmix.efno.fr\/wp-content\/uploads\/2015\/03\/RDI_modalites_18_03_2015_small.jpg 900w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-438\" class=\"wp-caption-text\">RDI change over time for both density scenarios studied. For each scenario a target RDI has been defined (dotted line): \u00ab\u00a0dynamic scenario\u00a0\u00bb (RDI = 0.425) and \u00ab\u00a0conservative scenario\u00a0\u00bb (RDI = 0.7). The frequency of thinnings is given as an indication. RDI = relative density index = stand density \/ maximum stand density.<\/p><\/div>\n<p>Three factors are tested and controlled: stand composition, stand density and pressure of herbivory by ungulates. 3 replicates were installed for each studied combination of factors.<\/p>\n<p>The factors of the experimental treatments:<\/p>\n<ul>\n<li><strong>3 compositions<\/strong>: pure oak (<em>Quercus petraea<\/em>), pure pine (<em>Pinus sylvestris<\/em>) and oak-pine mixture;<\/li>\n<li><strong>2 densities<\/strong>: a dynamic scenario and a conservative scenario. To control the density over the all life of the stands, the relative density index (RDI) is used (see figure). Two level of density are tested: RDI around 0.4 corresponding to the dynamic scenario and RDI around 0.7 corresponding to the conservative scenario;<\/li>\n<li><strong>2 types of herbivory pressure<\/strong>: open access and total exclusion with fences.<\/li>\n<\/ul>\n<p>Stand composition and tree density have a completely crossed factorial design, while herbivory is completely crossed with stand composition only for the low tree density<\/p>\n<p>The combinations of the factors tree density and herbivory corresponds to three unique management strategies: low density without herbivory, low and medium density with herbivory. The experiment is set up with <strong>three replicates\u00a0for each unique combination of factors<\/strong> with a total of 27 plots (3 compositions x 3 management strategies x 3 repetitions).<\/p>\n<p>In the case of mixed stands, additional treatments are tested:<\/p>\n<ul>\n<li>Control plot with no management actions (3 additional plots);<\/li>\n<li>Selective fences allowing the entry of wild boars but not the other ungulates (3 additional plots).<\/li>\n<\/ul>\n<p><strong>Finally, the experiment includes 33 experimental plots spread over 12 management plots.<\/strong><\/p>\n<p>&nbsp;<\/p>\n<div id=\"attachment_553\" style=\"width: 558px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2015\/03\/design_en.png\"><img aria-describedby=\"caption-attachment-553\" decoding=\"async\" loading=\"lazy\" class=\" wp-image-553\" src=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2015\/03\/design_en-300x114.png\" alt=\"Diagram of the OPTMix experimental design. 11 treatments were applied corresponding to the combination of the three factors: composition, sylvicultural scenario and herbivory. For each treatment 3 replicates were installed leading to 33 experimental plots.\" width=\"558\" height=\"212\" srcset=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2015\/03\/design_en-300x114.png 300w, https:\/\/optmix.efno.fr\/wp-content\/uploads\/2015\/03\/design_en-1024x388.png 1024w, https:\/\/optmix.efno.fr\/wp-content\/uploads\/2015\/03\/design_en.png 1374w\" sizes=\"(max-width: 558px) 100vw, 558px\" \/><\/a><p id=\"caption-attachment-553\" class=\"wp-caption-text\">Diagram of the OPTMix experimental design. 11 treatments were applied corresponding to the combination of the three factors: composition, sylvicultural scenario and herbivory. For each treatment 3 replicates were installed leading to 33 experimental plots.<\/p><\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Three factors are tested and controlled: stand composition, stand density and pressure of herbivory by ungulates. 3 replicates were installed for each studied combination of factors. The factors of the experimental treatments: 3 compositions: pure oak (Quercus petraea), pure pine (Pinus sylvestris) and oak-pine mixture; 2 densities: a dynamic scenario and a conservative scenario. To &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/optmix.efno.fr\/?page_id=219\">Lire la suite<\/a><\/p>\n","protected":false},"author":2,"featured_media":553,"parent":187,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_mi_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":"","_mc_calendar":[]},"_links":{"self":[{"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/pages\/219"}],"collection":[{"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=219"}],"version-history":[{"count":24,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/pages\/219\/revisions"}],"predecessor-version":[{"id":1444,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/pages\/219\/revisions\/1444"}],"up":[{"embeddable":true,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/pages\/187"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/media\/553"}],"wp:attachment":[{"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}