{"id":3519,"date":"2022-06-29T14:00:51","date_gmt":"2022-06-29T14:00:51","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=3519"},"modified":"2022-06-29T14:00:51","modified_gmt":"2022-06-29T14:00:51","slug":"black-bears-unlikely-guardians-of-plants","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/cs\/science\/ecology-and-conservation\/black-bears-unlikely-guardians-of-plants\/","title":{"rendered":"Medv\u011bdi: nepravd\u011bpodobn\u00ed ochr\u00e1nci rostlin"},"content":{"rendered":"

Medv\u011bdi: Nepravd\u011bpodobn\u00ed Str\u00e1\u017eci Rostlin<\/h2>\n\n

Mravenci: Dvojse\u010dn\u00e1 Zbra\u0148<\/h2>\n\n

Mravenci jsou \u010dasto pova\u017eov\u00e1ni za \u0161k\u016fdce, ale mohou tak\u00e9 hr\u00e1t prosp\u011b\u0161nou roli v ekosyst\u00e9mech. Na alpsk\u00fdch louk\u00e1ch v Coloradu poskytuj\u00ed mravenci \u00fakryt tet\u0159\u00edvk\u016fm a dal\u0161\u00edmu hmyzu. Mravenci v\u0161ak mohou tak\u00e9 p\u0159edstavovat probl\u00e9m, kdy\u017e napadnou rostliny a odrazuj\u00ed dal\u0161\u00ed hmyz od p\u0159ist\u00e1n\u00ed na jejich listech. To m\u016f\u017ee vytvo\u0159it \u201enep\u0159\u00e1telsky voln\u00fd prostor\u201c pro b\u00fdlo\u017eravce, jako jsou r\u016fzn\u00ed k\u0159\u00edsovit\u00ed, kte\u0159\u00ed mohou rostliny po\u0161kodit.<\/p>\n\n

P\u0159ich\u00e1z\u00ed \u010cern\u00fd Medv\u011bd<\/h2>\n\n

\u010cern\u00ed medv\u011bdi jsou zn\u00e1m\u00ed svou z\u00e1libou v mravenc\u00edch. A jak se ukazuje, jejich mravene\u010dn\u00ed zvyky maj\u00ed pozitivn\u00ed dopad na rostliny. Odstra\u0148ov\u00e1n\u00edm mravenc\u016f z okol\u00ed medv\u011bdi sni\u017euj\u00ed po\u010det b\u00fdlo\u017eravc\u016f, kte\u0159\u00ed mohou rostliny po\u0161kodit.<\/p>\n\n

Bli\u017e\u0161\u00ed Pohled na Vztah<\/h2>\n\n

Joshua Grinath, postgradu\u00e1ln\u00ed student ekologie na Floridsk\u00e9 st\u00e1tn\u00ed univerzit\u011b, provedl studii, aby prozkoumal vztah mezi medv\u011bdy, mravenci a komul\u00ed, \u017elut\u011b skvrnit\u00fdm ke\u0159em, kter\u00fd slou\u017e\u00ed jako obl\u00edben\u00fd \u00fakryt pro tet\u0159\u00edvky.<\/p>\n\n

Grinath zjistil, \u017ee hladov\u00ed medv\u011bdi zni\u010dili a\u017e 86 procent mraveni\u0161\u0165 v okol\u00ed. I kdy\u017e to byla \u0161patn\u00e1 zpr\u00e1va pro mravence, byla to skv\u011bl\u00e1 zpr\u00e1va pro ke\u0159e komule. Bez mravenc\u016f, kte\u0159\u00ed by je odrazovali, mohl jin\u00fd hmyz p\u0159ist\u00e1t na listech a sn\u00edst k\u0159\u00edsovit\u00e9, kte\u0159\u00ed jsou b\u00fdlo\u017eravci a mohou rostliny po\u0161kodit.<\/p>\n\n

V\u00fdhody pro Rostliny<\/h2>\n\n

Grinathova studie uk\u00e1zala, \u017ee rostliny, kter\u00fdm byli mravenci odstran\u011bni, byly schopny l\u00e9pe r\u016fst a produkovat semena. To nazna\u010duje, \u017ee medv\u011bdi hraj\u00ed d\u016fle\u017eitou roli v udr\u017eov\u00e1n\u00ed zdrav\u00ed rostlinn\u00fdch spole\u010denstv\u00ed na alpsk\u00fdch louk\u00e1ch v Coloradu.<\/p>\n\n

Mutualismus: Mravenci a K\u0159\u00edsovit\u00ed<\/h2>\n\n

Ve sv\u00e9 studii Grinath tak\u00e9 poznamenal, \u017ee mravenci a k\u0159\u00edsovit\u00ed maj\u00ed mutualistick\u00fd vztah. Mravenci poskytuj\u00ed \u00fakryt k\u0159\u00edsovit\u00fdm, zat\u00edmco k\u0159\u00edsovit\u00ed pom\u00e1haj\u00ed \u0161\u00ed\u0159it semena mravenc\u016f. Tento mutualismus se v\u0161ak m\u016f\u017ee st\u00e1t probl\u00e9mem pro rostliny, kdy\u017e mravenci napadnou jejich listy a vytvo\u0159\u00ed nep\u0159\u00e1telsky voln\u00fd prostor pro k\u0159\u00edsovit\u00e9 a dal\u0161\u00ed b\u00fdlo\u017eravce.<\/p>\n\n

Role \u010cern\u00fdch Medv\u011bd\u016f<\/h2>\n\n

\u010cern\u00ed medv\u011bdi pom\u00e1haj\u00ed tento cyklus p\u0159eru\u0161it t\u00edm, \u017ee odstra\u0148uj\u00ed mravence z okol\u00ed rostlin. To sni\u017euje po\u010det b\u00fdlo\u017eravc\u016f, kte\u0159\u00ed mohou rostliny po\u0161kodit, co\u017e jim umo\u017e\u0148uje r\u016fst a prosperovat.<\/p>\n\n

D\u016fsledky pro Spr\u00e1vu Ekosyst\u00e9m\u016f<\/h2>\n\n

Grinathova studie zd\u016fraz\u0148uje d\u016fle\u017eitost zohledn\u011bn\u00ed nep\u0159\u00edm\u00fdch \u00fa\u010dink\u016f interakc\u00ed mezi druhy p\u0159i spr\u00e1v\u011b ekosyst\u00e9m\u016f. Pochopen\u00edm slo\u017eit\u00fdch vztah\u016f mezi rostlinami, zv\u00ed\u0159aty a hmyzem m\u016f\u017eeme l\u00e9pe chr\u00e1nit a spravovat tyto ekosyst\u00e9my ve prosp\u011bch v\u0161ech druh\u016f.<\/p>","protected":false},"excerpt":{"rendered":"

Medv\u011bdi: Nepravd\u011bpodobn\u00ed Str\u00e1\u017eci Rostlin Mravenci: Dvojse\u010dn\u00e1 Zbra\u0148 Mravenci jsou \u010dasto pova\u017eov\u00e1ni za \u0161k\u016fdce, ale mohou tak\u00e9 hr\u00e1t prosp\u011b\u0161nou roli v ekosyst\u00e9mech. Na alpsk\u00fdch louk\u00e1ch v Coloradu poskytuj\u00ed mravenci \u00fakryt tet\u0159\u00edvk\u016fm…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1142],"tags":[5707,6699,2728,6698,6185,605],"class_list":["post-3519","post","type-post","status-publish","format-standard","hentry","category-ecology-and-conservation","tag-black-bears","tag-ecosystem-management","tag-plant-ecology","tag-ants","tag-mutualism","tag-wildlife-conservation"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/3519","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=3519"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/3519\/revisions"}],"predecessor-version":[{"id":3520,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/3519\/revisions\/3520"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=3519"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=3519"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=3519"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}