{"id":36105,"date":"2026-07-12T17:58:00","date_gmt":"2026-07-12T15:58:00","guid":{"rendered":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/?p=36105"},"modified":"2026-07-18T13:11:47","modified_gmt":"2026-07-18T11:11:47","slug":"entretien-a-lechelle-des-alpes-nous-ignorons-les-effectifs-de-lievres-variables","status":"publish","type":"post","link":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/2026\/07\/12\/entretien-a-lechelle-des-alpes-nous-ignorons-les-effectifs-de-lievres-variables\/","title":{"rendered":"[Entretien] \u00ab \u00c0 l\u2019\u00e9chelle des Alpes, nous ignorons les effectifs de li\u00e8vres variables \u00bb"},"content":{"rendered":"
\n

La Marseillaise :<\/b> Y a-t-il beaucoup de li\u00e8vres variables dans les Alpes fran\u00e7aises ?<\/b><\/p>\n

J\u00e9r\u00f4me Letty :<\/b> Nous n\u2019avons pas une vision claire des effectifs \u00e0 l\u2019\u00e9chelle des Alpes<\/a>, ni de donn\u00e9es permettant de dire s\u2019il y a une baisse. Nous avons une id\u00e9e \u00e0 des \u00e9chelles plus petites, sur certains massifs ou dans certaines vall\u00e9es. Mais les donn\u00e9es manquent \u00e0 d\u2019autres endroits, notamment dans les massifs plus \u00e0 l\u2019\u00e9cart. Or, c\u2019est probablement dans ces massifs o\u00f9 les sommets sont moins hauts qu\u2019il est le plus expos\u00e9 \u00e0 l\u2019\u00e9volution de l\u2019environnement. Pour la gestion de l\u2019esp\u00e8ce, ces donn\u00e9es seraient pr\u00e9cieuses et int\u00e9resseraient nos partenaires \u2013 parcs naturels nationaux, r\u00e9gionaux et f\u00e9d\u00e9rations de chasse.<\/p>\n

Y a-t-il d\u2019autres esp\u00e8ces expos\u00e9es aux \u00ab<\/b>\u00a0<\/b>sky islands<\/b>\u00a0<\/b>\u00bb, c\u2019est-\u00e0-dire qui voient leur aire de r\u00e9partition se restreindre \u00e0 des zones isol\u00e9es en altitude avec le r\u00e9chauffement climatique ? <\/b><\/p>\n

J.L. :<\/b> Oui, le lagop\u00e8de alpin est encore plus contraint car il est sp\u00e9cifiquement adapt\u00e9 \u00e0 la vie en milieu arctique. Le li\u00e8vre variable peut vivre \u00e0 des altitudes o\u00f9 il y a encore de la for\u00eat, mais pas le lagop\u00e8de. Il vit au-dessus, entre 1\u00a0800 et 3\u00a0000 m\u00e8tres, dans les pelouses rases, les \u00e9boulis et les combes \u00e0 neige. Par contre, il vole, ce qui peut \u00eatre un avantage pour passer d\u2019un massif \u00e0 l\u2019autre. Mais cela fonctionne jusqu\u2019\u00e0 un certain point…<\/p>\n

Lequel ? <\/b><\/p>\n

J.L. :<\/b> C\u2019est toute la question que nous voudrions explorer. Il ne peut pas voler sur de tr\u00e8s longues distances, donc il n\u2019arrive pas \u00e0 traverser les vall\u00e9es trop larges, au-del\u00e0 de quelques kilom\u00e8tres.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"La Marseillaise : Y a-t-il beaucoup de lièvres variables dans les Alpes françaises ?Jérôme Letty : Nous n’avons pas une vision claire des effectifs à l’échelle des Alpes, ni de données …","protected":false},"author":1,"featured_media":36106,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3926,3925,333,20],"tags":[84,409,376,418,515,239,6066,3239,2500,243,419,1592,416,2001,6016],"news-destination":[3944],"news-source":[475],"is_homepage":[],"ta_other":[],"class_list":["post-36105","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accueil-merge","category-accueil-third","category-environnement","category-societe","tag-biodiversite","tag-effectifs","tag-faune-sauvage","tag-foret","tag-gestion","tag-herault","tag-lievre","tag-massif","tag-massifs","tag-perols","tag-rechauffement-climatique","tag-recherche","tag-recherche-scientifique","tag-weekend","tag-xavier-boivinet","news-destination-homepage","news-source-website"],"_links":{"self":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/36105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/comments?post=36105"}],"version-history":[{"count":2,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/36105\/revisions"}],"predecessor-version":[{"id":36727,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/36105\/revisions\/36727"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media\/36106"}],"wp:attachment":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media?parent=36105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/categories?post=36105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/tags?post=36105"},{"taxonomy":"news-destination","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-destination?post=36105"},{"taxonomy":"news-source","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-source?post=36105"},{"taxonomy":"is_homepage","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/is_homepage?post=36105"},{"taxonomy":"ta_other","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/ta_other?post=36105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}