{"id":11265,"date":"2021-05-14T06:50:56","date_gmt":"2021-05-14T06:50:56","guid":{"rendered":"https:\/\/mousefreemarion.org\/le-responsable-du-projet-mouse-free-marion-revient-de-lile-marion\/"},"modified":"2021-05-14T06:50:56","modified_gmt":"2021-05-14T06:50:56","slug":"le-responsable-du-projet-mouse-free-marion-revient-de-lile-marion","status":"publish","type":"post","link":"https:\/\/mousefreemarion.org\/fr\/le-responsable-du-projet-mouse-free-marion-revient-de-lile-marion\/","title":{"rendered":"Le responsable du projet Mouse-Free Marion revient de l’\u00eele Marion"},"content":{"rendered":"

Le 12 mai 2021, le navire sud-africain de recherche et d’approvisionnement en Antarctique, le S.A. Agulhas II,<\/em> est rentr\u00e9 au Cap apr\u00e8s son voyage annuel de secours sur l’\u00eele Marion<\/a>. J’ai eu la chance de pouvoir participer \u00e0 ce voyage de cinq semaines afin d’\u00e9clairer notre planification du projet d’\u00e9radication des souris, pr\u00e9vu pour l’hiver austral 2023.<\/p>\n

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D\u00e9chargement du SA Agulhas II sur l’\u00eele Marion. Photo – Anton Wolfaardt<\/p><\/div>\n

C’\u00e9tait la premi\u00e8re fois que je retournais \u00e0 l’\u00eele Marion depuis que j’y ai pass\u00e9 un an en 1994\/95 en tant que membre de la 51e \u00e9quipe d’hivernage. La visite s’est av\u00e9r\u00e9e productive, utile et extr\u00eamement agr\u00e9able, renfor\u00e7ant le caract\u00e8re vraiment magique et impressionnant de l’\u00eele Marion. Cette visite a \u00e9galement permis de souligner l’importance et l’urgence du projet d’\u00e9radication des souris. Notre visite a co\u00efncid\u00e9 avec la p\u00e9riode \u00e0 laquelle les densit\u00e9s de souris sont les plus \u00e9lev\u00e9es sur l’\u00eele. Les signes de leur pr\u00e9sence \u00e9taient omnipr\u00e9sents – pistes et tunnels sillonnant la plupart des parties v\u00e9g\u00e9talis\u00e9es de l’\u00eele.<\/p>\n

Des d\u00e9cennies de recherche ont d\u00e9montr\u00e9 que les souris introduites font chuter les densit\u00e9s d’invert\u00e9br\u00e9s, sapant ainsi le cycle des nutriments et d’autres processus \u00e9cologiques importants sur l’\u00eele. Plus r\u00e9cemment, les souris ont commenc\u00e9 \u00e0 attaquer et \u00e0 tuer les albatros et les p\u00e9trels de l’\u00eele, y compris les grandes esp\u00e8ces qui nichent en surface, comme les albatros errants, les albatros \u00e0 t\u00eate grise et les albatros fuligineux.<\/p>\n

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L’\u00eele Marion abrite un quart de la population mondiale d’albatros errants. Photo – Anton Wolfaardt<\/p><\/div>\n

L’une des choses qui m’a frapp\u00e9 lors de cette visite sur l’\u00eele, c’est qu’elle semble beaucoup plus s\u00e8che que lorsque j’y ai pass\u00e9 l’hiver il y a 27 ans. Ces conditions plus s\u00e8ches et plus chaudes sont b\u00e9n\u00e9fiques pour les souris ; elles leur permettent de prolonger leur saison de reproduction, ce qui entra\u00eene une augmentation continue de leur nombre et une aggravation des impacts sur les oiseaux marins et l’\u00e9cologie de l’\u00eele. Les mod\u00e8les de changement climatique pr\u00e9voient une am\u00e9lioration continue des conditions de vie des souris sur l’\u00eele, de sorte que ces effets n\u00e9gatifs risquent de s’aggraver encore.<\/p>\n

L’\u00e9radication des souris de l’\u00eele Marion ne sera pas une t\u00e2che facile. Cependant, avec une planification m\u00e9ticuleuse, le respect des le\u00e7ons tir\u00e9es des \u00e9radications r\u00e9ussies sur d’autres \u00eeles subantarctiques et la mise en \u0153uvre des meilleures pratiques, nous savons qu’il est possible d’y parvenir.<\/p>\n

Depuis les quelques mois que je participe au projet, j’ai \u00e9t\u00e9 immens\u00e9ment impressionn\u00e9 et inspir\u00e9 par la communaut\u00e9 internationale d’experts dans le domaine de l’\u00e9radication des rongeurs sur les \u00eeles. Leurs connaissances et leur exp\u00e9rience approfondies, ainsi que leur enthousiasme et leur g\u00e9n\u00e9rosit\u00e9 dans la fourniture de conseils au projet Marion, ont \u00e9t\u00e9 magnifiques.<\/p>\n

La d\u00e9termination et les efforts collectifs des coll\u00e8gues de BirdLife South Africa, du minist\u00e8re sud-africain des for\u00eats, de la p\u00eache et de l’environnement (DFFE) et du minist\u00e8re des travaux publics et de l’infrastructure (DPWI), des nombreux scientifiques menant des recherches d’importance mondiale sur l’\u00eele Marion, certains depuis plusieurs d\u00e9cennies, et des membres des diff\u00e9rentes structures consultatives et de gestion du projet, ont \u00e9t\u00e9 absolument fantastiques et contribueront certainement au succ\u00e8s du projet.<\/p>\n

 <\/p>\n

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Avec les membres de l’\u00e9quipe de prise en charge de la DFFE sur l’\u00eele Marion, de gauche \u00e0 droite : Mazizi Salmani, Daisy Kotsedi, Shiraan Watson (DCO), Mbulelo Dopolo, Brent Misrole, Anton Wolfaardt (Mouse-Free Marion), Mark Duckitt (Ecoimpact), Tatulo Fiphaza, Errol Julies. Photo – Bruce Dyer<\/p><\/div>\n

Toutes ces personnes et organisations travaillent ensemble pour atteindre un r\u00e9sultat qui repr\u00e9sentera un h\u00e9ritage important et durable en mati\u00e8re de conservation : une \u00eele sauvage exempte de pr\u00e9dateurs mammif\u00e8res envahissants, ce qui contribuera \u00e0 am\u00e9liorer l’\u00e9tat de conservation de l’albatros errant, des nombreux autres oiseaux marins qui vivent sur l’\u00eele et de l’int\u00e9grit\u00e9 \u00e9cologique de cette importante \u00eele subantarctique.<\/p>\n

Anton Wolfaardt, <\/em>Responsable du projet Mouse-Free Marion, 14 mai 2021<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

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