{"id":32415,"date":"2015-08-25T11:45:24","date_gmt":"2015-08-25T04:45:24","guid":{"rendered":"http:\/\/www.forestsnews.org\/?p=32415"},"modified":"2018-02-07T11:42:08","modified_gmt":"2018-02-07T04:42:08","slug":"petites-creatures-enorme-empreinte","status":"publish","type":"post","link":"https:\/\/www.forestsnews.org\/fr\/32415\/petites-creatures-enorme-empreinte","title":{"rendered":"Petites cr\u00e9atures, \u00c9NORME empreinte"},"content":{"rendered":"<figure id=\"attachment_31425\" aria-describedby=\"caption-attachment-31425\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.forestsnews.org\/wp-content\/uploads\/2015\/08\/shrimp-cocktail.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31425 size-large\" src=\"\/\/www.forestsnews.org\/wp-content\/uploads\/2015\/08\/shrimp-cocktail-500x412.jpg\" alt=\"shrimp cocktail\" width=\"500\" height=\"412\" \/><\/a><figcaption id=\"caption-attachment-31425\" class=\"wp-caption-text\">Le cocktail de crevettes est devenu la pi\u00e8ce ma\u00eetresse des pr\u00e9sentations \u00e9cologiques de Boone Kauffman. Photo:<a href=\"https:\/\/commons.wikimedia.org\/wiki\/Main_Page\" target=\"_blank\"> Wikicommons<\/a>.<\/figcaption><\/figure>\n<p class=\"p1\">Il y a trois ans de cela, J. Boone Kauffman, un \u00e9cologiste de l\u2019Universit\u00e9 d\u2019\u00c9tat de l\u2019Oregon et associ\u00e9 au <a href=\"\/\/www.cifor.org\/\" target=\"_blank\">Centre de Recherche Foresti\u00e8re Internationale<\/a> (CIFOR) <a href=\"http:\/\/www.nature.com\/ngeo\/journal\/v4\/n5\/abs\/ngeo1123.html\" target=\"_blank\">a publi\u00e9 un article<\/a> dans lequel il calculait l\u2019immense impact de l\u2019\u00e9levage de crevettes dans une mangrove sur l\u2019environnement. C\u2019est \u00e0 ce moment qu\u2019il d\u00e9cida de personnaliser la recherche.<\/p>\n<p class=\"p3\">Il servit les crevettes pour d\u00eener.<\/p>\n<p class=\"p3\">Boone estima qu\u2019une portion de 100 grammes de crevette \u2013 disons, un cocktail de crevettes \u2013 avait une <a href=\"http:\/\/phys.org\/tags\/carbon+footprint\/\" target=\"_blank\">empreinte carbone<\/a> sur l\u2019\u00e9cosyst\u00e8me de 198 kilogrammes de CO2, lorsque produite sur une ferme piscicole de mangroves typique.<\/p>\n<p class=\"p3\">Ce hors-d\u2019\u0153uvre plut\u00f4t app\u00e9tissant \u00e9tait donc un avertissement sans ambig\u00fcit\u00e9 quant \u00e0 la perte d\u2019habitat et \u00e0 la d\u00e9forestation. \u00ab L\u2019empreinte carbone de la crevette est environ 10 fois sup\u00e9rieure \u00e0 l\u2019empreinte carbone de l\u2019utilisation d\u2019une terre, provenant d\u2019une for\u00eat tropicale reconvertie en p\u00e2turage, pour produire une quantit\u00e9 \u00e9quivalente de b\u0153uf \u00bb, d\u00e9clara r\u00e9cemment Boone \u00e0 un auditoire compos\u00e9 de scientifiques du CIFOR. Les crevettes \u00e9taient autrefois consid\u00e9r\u00e9es comme de la nourriture sophistiqu\u00e9e destin\u00e9e aux gens hupp\u00e9s et <i>jet-set<\/i> \u2013 le genre de bouffe chic qu\u2019aurait mang\u00e9e James Bond.<\/p>\n<p class=\"p3\">Des crevettes, on peut d\u00e9sormais en retrouver partout \u2013 mais leur ubiquit\u00e9 ne les rend pas pour autant plus efficaces pour les fermes. Une ferme piscicole de crevettes bas\u00e9e sur un syst\u00e8me vaste \u00e0 faibles intrants (<span class=\"s2\"><i>extensive-low input system<\/i>)<\/span> ne produit qu\u2019un seul kilogramme de crevettes pour chaque 13,4 m\u00e8tres carr\u00e9s de mangroves utilis\u00e9es.<\/p>\n<p class=\"p3\">Et ce type de r\u00e9colte ne dure qu\u2019un temps; les littoraux qui abritent des \u00e9levages de crevettes sont g\u00e9n\u00e9ralement abandonn\u00e9s apr\u00e8s moins de 10 ans \u2013 \u00e9puis\u00e9s, contamin\u00e9s et \u00ab inutilisables pour un autre 40 ans \u00bb, selon Kauffman.<\/p>\n<p class=\"p1\"><b>SOYONS S\u00c9RIEUX<\/b><\/p>\n<p class=\"p3\">L\u2019accent mis d\u00e9lib\u00e9r\u00e9ment sur le \u00ab r\u00e9el \u00bb par Kauffman, dans sa recherche, fait en sorte que la pr\u00e9sentation scientifique des donn\u00e9es ressemble \u00e0 une conf\u00e9rence TED.<\/p>\n<p class=\"p3\">\u00ab Si vous et quatre de vos amis allez souper ce soir et que chacun d\u2019entre vous mange un cocktail de crevettes en guise d\u2019entr\u00e9e, il s\u2019agit d\u2019une empreinte carbone de 1,138 kilogrammes \u00bb dit-il. \u00ab Puis, chacun d\u2019entre vous commande un bon gros steak. L\u2019empreinte carbone de ce souper augmente de 1,367. Il s\u2019agit donc d\u2019une empreinte carbone de 2,498 kilogrammes.<\/p>\n<p class=\"p3\">\u00ab C\u2019est l\u2019\u00e9quivalent de br\u00fbler environ 281 gallons (1064 litres) d\u2019essence.<\/p>\n<p class=\"p5\">\u00ab Maintenant, supposons que nous sommes sur la c\u00f4te Ouest \u2013 disons en Oregon o\u00f9 j\u2019habite\u2026 et que nous roulons \u00e0 travers les \u00c9tats-Unis jusque sur la c\u00f4te est, jusqu\u2019\u00e0 la ville de New York \u2013 et bien traverser le continent de l\u2019Am\u00e9rique du Nord cr\u00e9erait une plus petite empreinte carbone que le repas mentionn\u00e9 [pr\u00e9c\u00e9demment].<\/p>\n<p class=\"p3\">\u00ab M\u00eame si nous \u00e9tions dans un camion de style <i>pick-up<\/i>, les \u00e9missions de dioxyde de carbone [du repas] p\u00e8sent plus dans la balance que le poids de notre gros camion am\u00e9ricain. \u00bb <div class='short-quote'>\n\t\t\t<blockquote>\n\t\t\t\t<p><\/p>\n\t\t\t\t<footer>\n\t\t\t\t\t<cite title='Source Title'><\/cite>\n\t\t\t\t<\/footer>\n\t\t\t<\/blockquote>\n\t\t<\/div><\/p>\n<p class=\"p3\">En transformant des donn\u00e9es scientifiques difficiles en preuves \u00e9mouss\u00e9es, mais color\u00e9es, sur les dommages environnementaux d\u00e9vastateurs que cause une agr\u00e9able \u2013 et \u00e0 premi\u00e8re vue innocente \u2013 soir\u00e9e entre amis, Kauffman s\u2019est aper\u00e7u que m\u00eame les scientifiques ont abord\u00e9 ses r\u00e9sultats avec un int\u00e9r\u00eat plus personnel.<\/p>\n<p class=\"p3\">Boone Kauffman poursuit pr\u00e9sentement au CIFOR, dans la ville de Bogor, Indon\u00e9sie, son \u00e9tude sur les mangroves. Voici une courte entrevue que nous avons r\u00e9alis\u00e9e avec lui.<\/p>\n<p class=\"p3\"><b>Cette recherche fut publi\u00e9e en 2012 et entra\u00eena une r\u00e9ponse fantastique pour une recherche scientifique. D\u2019o\u00f9 proviennent vos questionnements depuis ce temps?<\/b><\/p>\n<p class=\"p3\">Jusqu\u2019en 2012, nous nous sommes seulement concentr\u00e9s sur la compr\u00e9hension des stocks de carbone des mangroves intactes. Depuis 2012, nous nous concentrons davantage sur deux aspects. De un, quels sont les stocks de carbone dans les zones o\u00f9 les mangroves ont subi l\u2019exploitation des terres? Il s\u2019agit des p\u00e2turages de bovins au Mexique et des \u00e9tangs convertis en \u00e9levage de crevettes, ici en Indon\u00e9sie, de m\u00eame qu\u2019en Am\u00e9rique latine.<\/p>\n<p class=\"p3\">Cela nous a permis d\u2019obtenir des donn\u00e9es quantitatives sur le nombre d\u2019\u00e9missions \u2013 d\u2019\u00e9missions de gaz \u00e0 effet de serre qui r\u00e9sultent de la conversion des mangroves en terres exploit\u00e9es \u00e0 d\u2019autres fins. Et la quantit\u00e9 d\u2019\u00e9missions qui en \u00e9mane s\u2019est r\u00e9v\u00e9l\u00e9e \u00eatre tr\u00e8s surprenante.<\/p>\n<p class=\"p3\">Et la plus grande d\u00e9couverte que nous ayons faite est l\u2019ampleur avec laquelle nous perdons ce carbone pr\u00e9sent dans le sol et probablement s\u00e9questr\u00e9 ou emmagasin\u00e9 dans les mangroves depuis des milliers d\u2019ann\u00e9es; et comment en l\u2019espace de quelques d\u00e9cennies, ce carbone se retrouve perdu dans l\u2019atmosph\u00e8re.<\/p>\n<p class=\"p3\"><b>Vous avez quantifi\u00e9 cela en indiquant que pendant des milliers d\u2019ann\u00e9es les mangroves \u00e9taient en sant\u00e9 \u2026 et qu\u2019ensuite, nous avons trouv\u00e9 le moyen de tout d\u00e9truire en seulement quelques d\u00e9cennies. Sachant cela, quelle est la seule chose que vous recommanderiez que nous fassions?<\/b><\/p>\n<p class=\"p3\">Je pense que nous devons \u00eatre conscients des cons\u00e9quences qu\u2019entra\u00eene l\u2019utilisation de nos terres. Lorsque qu\u2019on consomme\u2026 Il y a certains produits qu\u2019on appr\u00e9cie de notre soci\u00e9t\u00e9 moderne qui ont<span class=\"Apple-converted-space\"> <\/span>un co\u00fbt tr\u00e8s tr\u00e8s \u00e9lev\u00e9 en mati\u00e8re de dioxyde de carbone \/ \u00e9missions de gaz \u00e0 effet de serre. <div class='short-quote'>\n\t\t\t<blockquote>\n\t\t\t\t<p><\/p>\n\t\t\t\t<footer>\n\t\t\t\t\t<cite title='Source Title'><\/cite>\n\t\t\t\t<\/footer>\n\t\t\t<\/blockquote>\n\t\t<\/div><\/p>\n<p class=\"p3\">Et des crevettes et du b\u0153uf d\u2019\u00e9levage provenant d\u2019anciennes for\u00eats tropicales reconverties en p\u00e2turages ont un co\u00fbt tr\u00e8s \u00e9lev\u00e9 en termes de perte de diversit\u00e9 biologique, de qualit\u00e9 de l\u2019eau\u2026 et maintenant, on d\u00e9couvre que c\u2019est aussi le cas pour les \u00e9missions de gaz \u00e0 effet de serre.<\/p>\n<p class=\"p3\"><b>Vous devez \u00eatre habitu\u00e9 \u00e0 voir les gens s\u2019horrifier lorsque vous leur pr\u00e9sentez vos donn\u00e9es. En tant qu\u2019\u00e9cologiste, vous devez esp\u00e9rer pour que les comportements changent. Mais, est-ce que cela se produit r\u00e9ellement? <\/b><\/p>\n<p class=\"p3\">La population a le droit d\u2019\u00eatre au courant de l&rsquo;impact des aliments qu\u2019ils mangent et c\u2019est le r\u00f4le que peuvent jouer les \u00e9cologistes : informer le public.<\/p>\n<p class=\"p3\">Et ce que je fais ici, c\u2019est l\u2019expliquer d\u2019une mani\u00e8re compr\u00e9hensible \u2013 leur laisser savoir que lorsque tu manges un steak provenant d\u2019une for\u00eat tropicale ou des crevettes provenant d\u2019une mangrove, cela entraine un co\u00fbt environnemental assez \u00e9lev\u00e9 :<i> <\/i>co\u00fbts et<i> <\/i>pertes en mati\u00e8re de biodiversit\u00e9, de justice sociale, d\u2019\u00e9missions de gaz \u00e0 effet de serre.<\/p>\n<p class=\"p3\"><b>Mangez-vous du b\u0153uf ou des crevettes?<\/b><\/p>\n<p class=\"p3\">Non!<\/p>\n<p class=\"p3\"><b>Esp\u00e9rez-vous que les autres se sentent oblig\u00e9s d\u2019agir?<\/b><\/p>\n<p class=\"p3\">Je l\u2019esp\u00e8re. J\u2019estime que, philosophiquement, nous devons laisser cette plan\u00e8te dans un meilleur \u00e9tat pour nos enfants et ce n\u2019est pas ce que nous faisons [pr\u00e9sentement]. Nous assistons \u00e0 un taux de d\u00e9forestation sans pr\u00e9c\u00e9dent des mangroves et des autres for\u00eats \u00e9galement.<\/p>\n<p class=\"p3\">En effet, si nous voulons ralentir le changement climatique, il y a plusieurs contributions que nous puissions faire, comme r\u00e9duire les combustibles fossiles. Mais aussi r\u00e9duire l\u2019exploitation des terres qui cause r\u00e9ellement de flagrantes pertes de biodiversit\u00e9 et dont l\u2019exploitation \u00e9met des gaz \u00e0 effet de serre. C\u2019est ici que plusieurs r\u00e9sultats de notre \u00e9tude peuvent aider le public \u00e0 prendre de bonnes d\u00e9cisions par rapport \u00e0 leurs habitudes quotidiennes de consommation.<\/p>\n<p class=\"p3\"><strong>Pour plus d&rsquo;informations au sujet de l&rsquo;\u00e9tude de Boone Kauffman, vous pouvez le contacter \u00e0 cette adresse:<\/strong> <a href=\"mailto:b.kauffman@cgiar.org\" target=\"_blank\"><strong>b.kauffman@cgiar.org<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Il y a trois ans de cela, J. Boone Kauffman, un \u00e9cologiste de l\u2019Universit\u00e9 d\u2019\u00c9tat de l\u2019Oregon et associ\u00e9 au Centre de Recherche Foresti\u00e8re Internationale (CIFOR) a publi\u00e9 un article dans lequel il calculait l\u2019immense impact de l\u2019\u00e9levage de crevettes dans une mangrove sur l\u2019environnement. C\u2019est \u00e0 ce moment qu\u2019il d\u00e9cida de personnaliser la recherche. [&hellip;]<\/p>\n","protected":false},"author":167,"featured_media":31426,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[462,161,96,180],"tags":[],"language":[2170],"location":[12223],"tag-bahasa":[],"tag-espanol":[],"tag-francais":[3076,3152,4749,2327,3081,3112,3078,4213],"type-espanol":[],"type-bahasa":[],"type-english":[],"type-francais":[3007],"coauthors":[1942],"class_list":["post-32415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climate-change-energy","category-deforestation","category-mangroves","category-mitigating-climate-change","language-francais","location-indonesia","tag-francais-aquaculture","tag-francais-indonesie","tag-francais-john-kauffman","tag-francais-mangroves","tag-francais-milieux-humides","tag-francais-preservation","tag-francais-stocks-de-carbone","tag-francais-universite-de-letat-doregon","type-francais-entrevue"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Petites cr\u00e9atures, \u00c9NORME empreinte - Landscape Alliance Forests News<\/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:\/\/www.forestsnews.org\/fr\/32415\/petites-creatures-enorme-empreinte\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Petites cr\u00e9atures, \u00c9NORME empreinte\" \/>\n<meta property=\"og:description\" content=\"Il y a trois ans de cela, J. Boone Kauffman, un \u00e9cologiste de l\u2019Universit\u00e9 d\u2019\u00c9tat de l\u2019Oregon et associ\u00e9 au Centre de Recherche Foresti\u00e8re Internationale (CIFOR) a publi\u00e9 un article dans lequel il calculait l\u2019immense impact de l\u2019\u00e9levage de crevettes dans une mangrove sur l\u2019environnement. C\u2019est \u00e0 ce moment qu\u2019il d\u00e9cida de personnaliser la recherche. 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