{"id":2025,"date":"2016-12-01T20:19:39","date_gmt":"2016-12-01T20:19:39","guid":{"rendered":"http:\/\/hebergement.u-psud.fr\/brigaud\/?p=2025"},"modified":"2016-12-01T20:27:59","modified_gmt":"2016-12-01T20:27:59","slug":"2025-2","status":"publish","type":"post","link":"https:\/\/hebergement.universite-paris-saclay.fr\/brigaud\/2025-2\/","title":{"rendered":"Publication: D\u00e9tection de l&rsquo;impact environnemental des mines de Nickel en Nouvelle-Cal\u00e9donie par l&rsquo;analyse des lichens"},"content":{"rendered":"<p style=\"text-align: justify;\">L&rsquo;article intitul\u00e9e \u00ab\u00a0<a href=\"http:\/\/dx.doi.org\/10.1186\/s40064-016-3681-4\">Impact of nickel mining in New Caledonia assessed by compositional data analysis of lichens<\/a>\u00a0\u00bb par Camille Pasquet, Pauline Le Monier, Fabrice Monna, Christophe Durlet, Benjamin Brigaud, R\u00e9mi Losno, Carmela Chateau, Christine Laporte-Magoni et Peggy Gunkel-Grillon vient de para\u00eetre dans la revue SpringerPlus.<\/p>\n<p style=\"text-align: justify;\">Cette \u00e9tude explore la possibilit\u00e9 d&rsquo;utiliser les lichens comme bio-indicateur de la pollution atmosph\u00e9rique engendr\u00e9e par l&rsquo;activit\u00e9 mini\u00e8re et le traitement minier du Nickel rejetant des poussi\u00e8res riches en nickel, cobalt, chrome ou fer, en prenant comme exemple une grande r\u00e9gion productrice: la Nouvelle-Cal\u00e9donie. Les concentrations importantes de nickel, cobalt ou chrome dans les tissus organiques des lichens collect\u00e9s proches des mines ou du site de traitement minier \u00e0 Noum\u00e9a montrent qu&rsquo;ils enregistrent tr\u00e8s bien la pollution atmosph\u00e9rique engendr\u00e9e par l&rsquo;activit\u00e9 mini\u00e8re. Les lichens sont de tr\u00e8s bons supports permettant de localiser rapidement les zones impact\u00e9es par l&rsquo;activit\u00e9 mini\u00e8re.<\/p>\n<p style=\"text-align: justify;\">Toutes les infos sur le site de <a href=\"http:\/\/www.fabricemonna.com\/2016\/11\/17\/larticle-impact-of-nickel-mining-in-new-caledonia-assessed-by-compositional-data-analysis-of-lichens-par-pasquet-c-et-al-vient-detre-accepte-a-springer-plus\/\" target=\"_blank\">Fabrice Monna<\/a>.<\/p>\n<p style=\"text-align: justify;\">Revoir les photos de la mission de terrain en 2012: <a href=\"http:\/\/hebergement.u-psud.fr\/brigaud\/bonjour-tout-le-monde\/\" target=\"_blank\">http:\/\/hebergement.u-psud.fr\/brigaud\/bonjour-tout-le-monde\/<\/a><\/p>\n<p><a href=\"http:\/\/hebergement.u-psud.fr\/brigaud\/wp-admin\/uploads\/P1010403.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-279\" src=\"http:\/\/hebergement.u-psud.fr\/brigaud\/wp-admin\/uploads\/P1010403.jpg\" alt=\"photographie du lichens avant pr\u00e9l\u00e8vement\" width=\"436\" height=\"327\" srcset=\"https:\/\/hebergement.universite-paris-saclay.fr\/brigaud\/wp-admin\/uploads\/P1010403.jpg 4320w, https:\/\/hebergement.universite-paris-saclay.fr\/brigaud\/wp-admin\/uploads\/P1010403-300x225.jpg 300w, https:\/\/hebergement.universite-paris-saclay.fr\/brigaud\/wp-admin\/uploads\/P1010403-1024x768.jpg 1024w\" sizes=\"auto, (max-width: 436px) 100vw, 436px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h6>Photo: Pr\u00e9l\u00e8vement des lichens<\/h6>\n<p style=\"text-align: justify;\">R\u00e9sum\u00e9 de l&rsquo;\u00e9tude en anglais:<\/p>\n<p style=\"text-align: justify;\">The aim of this study is to explore the use of lichens as biomonitors of the impact of nickel mining and ore treatment on the atmosphere in the New Caledonian archipelago (South Pacific Ocean); both activities emitting also Co, Cr and possibly Fe. Metal contents were analysed in thirty-four epiphytic lichens, collected in the vicinity of the potential sources, and in places free from known historical mining. The highest Ni, Co, and Cr concentrations were, as expected, observed in lichens collected near ore deposits or treatment areas. The elemental composition in the lichens was explored by multivariate analysis, after appropriately transforming the variables (i.e. using compositional data analysis). The sample score of the first principal component (PC1) makes the largest (positive) multiplicative contribution to the log-ratios of metals originating from mining activities (Ni, Cr, Co) divided by Ti. The PC1 scores are used here as a surrogate of pollution levels related to mining and metallurgical activity. They can be viewed as synthetic indicators mapped to provide valuable information for the management and protection of ecosystems or, as a first step, to select locations where air filtration units could be installed, in the future, for air quality monitoring. However, as this approach drastically simplifies the problem, supplying a broadly efficient picture but little detail, recognizing the different sources of contamination may be difficult, more particularly when their chemical differences are subtle. It conveys only relative information: about ratios, not levels, and is therefore recommended as a preliminary step, in combination with close examination of raw concentration levels of lichens. Further validation using conventional air-monitoring by filter units should also prove beneficial.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;article intitul\u00e9e \u00ab\u00a0Impact of nickel mining in New Caledonia assessed by compositional data analysis of lichens\u00a0\u00bb par Camille Pasquet, Pauline Le Monier, Fabrice Monna, Christophe Durlet, Benjamin Brigaud, R\u00e9mi Losno, Carmela Chateau, Christine Laporte-Magoni et Peggy Gunkel-Grillon vient de para\u00eetre dans la revue SpringerPlus. Cette \u00e9tude explore la possibilit\u00e9 d&rsquo;utiliser les lichens comme bio-indicateur de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2022,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[75],"tags":[121,122],"class_list":["post-2025","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article","tag-lichens","tag-mines","post-preview"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Publication: D\u00e9tection de l&#039;impact environnemental des mines de Nickel en Nouvelle-Cal\u00e9donie par l&#039;analyse des lichens - benjamin brigaud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hebergement.universite-paris-saclay.fr\/brigaud\/2025-2\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Publication: D\u00e9tection de l&#039;impact environnemental des mines de Nickel en Nouvelle-Cal\u00e9donie par l&#039;analyse des lichens - benjamin brigaud\" \/>\n<meta property=\"og:description\" content=\"L&rsquo;article intitul\u00e9e \u00ab\u00a0Impact of nickel mining in New Caledonia assessed by compositional data analysis of lichens\u00a0\u00bb par Camille Pasquet, Pauline Le Monier, Fabrice Monna, Christophe Durlet, Benjamin Brigaud, R\u00e9mi Losno, Carmela Chateau, Christine Laporte-Magoni et Peggy Gunkel-Grillon vient de para\u00eetre dans la revue SpringerPlus. 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