{"id":370783,"date":"2026-03-19T10:32:43","date_gmt":"2026-03-19T09:32:43","guid":{"rendered":"https:\/\/zakrasnejsivimperk.cz\/?p=370783"},"modified":"2026-03-19T10:35:57","modified_gmt":"2026-03-19T09:35:57","slug":"ceska-republika-brouci-se-vraceji-rostliny-vahaji-co-zustava-po-invaznim-akatu","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=370783","title":{"rendered":"\u010cESK\u00c1 REPUBLIKA: Brouci se vracej\u00ed, rostliny v\u00e1haj\u00ed. Co v chr\u00e1n\u011bn\u00fdch \u00fazem\u00edch z\u016fst\u00e1v\u00e1 po invazn\u00edm ak\u00e1tu"},"content":{"rendered":"
\"\"
Larvy vz\u00e1cn\u00e9ho tesa\u0159\u00edka Isotomus speciosus se \u017eiv\u00ed d\u0159evem such\u00fdch listnat\u00fdch strom\u016f. Ak\u00e1t, navzdory sv\u00e9mu exotick\u00e9mu p\u016fvodu, jim vysloven\u011b chutn\u00e1 (Autor: Daniel Rydzi).<\/figcaption><\/figure>\n

 <\/p>\n

Invaze exotick\u00fdch druh\u016f jsou hlavn\u00ed hrozbou pro p\u0159\u00edrodn\u00ed rozmanitost u n\u00e1s i na Zem\u011bkouli. Zejm\u00e9na exotick\u00e9 stromy a ke\u0159e dok\u00e1\u017e\u00ed zcela zm\u011bnit podm\u00ednky a vytla\u010dit p\u016fvodn\u00ed rostliny a \u017eivo\u010dichy. Jednou z nejproblemati\u010dt\u011bj\u0161\u00edch d\u0159evin je trnovn\u00edk ak\u00e1t (<\/b><\/span>Robinia pseudoacacia<\/b><\/i><\/span>), p\u016fvodn\u011b severoamerick\u00fd strom, kter\u00fd se v Evrop\u011b masivn\u011b roz\u0161\u00ed\u0159il b\u011bhem 20. stolet\u00ed. Probl\u00e9m p\u0159edstavuje v chr\u00e1n\u011bn\u00fdch \u00fazem\u00edch, ale odstranit jej nen\u00ed jednoduch\u00e9.<\/b><\/span><\/h6>\n

 <\/p>\n

\"\"
Les\u00e1k rum\u011blkov\u00fd (Cucujus cinnaberinus) \u017eije pod k\u016frou a je jedn\u00edm z nemnoha brouk\u016f, kter\u00fdm se v ak\u00e1tin\u00e1ch vysloven\u011b l\u00edb\u00ed. Vyhovuje mu zde p\u0159edev\u0161\u00edm dostatek mrtv\u00e9ho d\u0159eva. (Autor: David Hauck).<\/figcaption><\/figure>\n

\"\"Spr\u00e1va n\u00e1rodn\u00edho parku Podyj\u00ed a Magistr\u00e1t hlavn\u00edho m\u011bsta Prahy pat\u0159\u00ed k\u00a0prvn\u00edm instituc\u00edm, kter\u00e9\u00a0k jeho systematick\u00e9mu odstra\u0148ov\u00e1n\u00ed p\u0159istoupily, a pr\u00e1v\u011b na jejich lokalit\u00e1ch prob\u00edhal v\u00fdzkum. Nov\u00e9 v\u00fdsledky ale ukazuj\u00ed, \u017ee samotn\u00e9 vyk\u00e1cen\u00ed ak\u00e1tu je\u0161t\u011b neznamen\u00e1 n\u00e1vrat p\u016fvodn\u00edho lesa.<\/span><\/p>\n

V\u011bdci a ochr\u00e1nci p\u0159\u00edrody z \u010ceska, Slovenska a Ma\u010farska zkoumali, co se s lesem d\u011bje po likvidaci ak\u00e1tu. Zam\u011b\u0159ili se na zm\u011bny v p\u016fd\u011b, v rostlinn\u00e9m podrostu a sledovali brouky v\u00e1zan\u00e9 na odum\u0159el\u00e9 d\u0159evo. Porovn\u00e1vali p\u016fvodn\u00ed doubravy, \u017eiv\u00e9 ak\u00e1tiny, such\u00e9 ak\u00e1tiny po aplikaci herbicidu a plochy, kde u\u017e byly such\u00e9 ak\u00e1ty odstran\u011bny.<\/p>\n

\u201eAk\u00e1t je u\u017eite\u010dn\u00fd strom. V p\u0159\u00edrodn\u011b cenn\u00fdch lokalit\u00e1ch ale vytla\u010duje p\u016fvodn\u00ed, dnes \u010dasto ohro\u017een\u00e9 rostliny a \u017eivo\u010dichy. Nyn\u00ed napravujeme chybu p\u0159edk\u016f, kte\u0159\u00ed ak\u00e1t vysazovali v dobr\u00e9 v\u00ed\u0159e bez znalosti jeho ne\u017e\u00e1douc\u00edho vlivu,\u201c<\/em> \u0159\u00edk\u00e1 Ji\u0159\u00ed Rom, specialista p\u00e9\u010de o chr\u00e1n\u011bn\u00e1 \u00fazem\u00ed z odd\u011blen\u00ed p\u00e9\u010de o zele\u0148 Magistr\u00e1tu hlavn\u00edho m\u011bsta Prahy.\u00a0\u00a0<\/span><\/p>\n

\u201eAk\u00e1t m\u00e1 tendenci se \u0161\u00ed\u0159it. V Podyj\u00ed nejv\u00edc ohro\u017euje sv\u011btl\u00e9 lesy a stepn\u00ed lokality. Je to skute\u010dn\u00fd nezmar a jeho likvidace je velmi n\u00e1ro\u010dn\u00e1,\u201c<\/em> \u0159\u00edk\u00e1 Robert Stejskal ze Spr\u00e1vy n\u00e1rodn\u00edho parku Podyj\u00ed. \u201eV Podyj\u00ed m\u00e1me ak\u00e1tu opravdu hodn\u011b a sna\u017e\u00edme se jej postupn\u011b eliminovat, i kdy\u017e zat\u00edm jen z vybran\u00fdch m\u00edst podle stanoven\u00fdch priorit. Samoz\u0159ejm\u011b n\u00e1s zaj\u00edmalo, co se po odstran\u011bn\u00ed ak\u00e1tu d\u011bje,\u201c<\/em> dod\u00e1v\u00e1.<\/span><\/p>\n

T\u00fdm z Botanick\u00e9ho \u00fastavu a Biologick\u00e9ho centra Akademie v\u011bd \u010cR proto na jeden\u00e1cti m\u00edstech v \u010cech\u00e1ch, na Morav\u011b, na Slovensku a v Ma\u010farsku sledoval, jak rostliny a brouci osidluj\u00ed plochy po odstran\u011bn\u00ed ak\u00e1tu.<\/p>\n

\u201eP\u016fda si ak\u00e1t \u201epamatuje\u201c je\u0161t\u011b dlouho pot\u00e9, co zmiz\u00ed. Ak\u00e1t toti\u017e s pomoc\u00ed bakteri\u00ed v\u00e1\u017ee vzdu\u0161n\u00fd dus\u00edk a v\u00fdrazn\u011b tak obohacuje p\u016fdu o \u017eiviny. V podrostu ak\u00e1tin proto p\u0159eva\u017euje n\u011bkolik b\u011b\u017en\u00fdch druh\u016f, nap\u0159\u00edklad kop\u0159ivy, kter\u00fdm nadbytek \u017eivin vyhovuje. Ty v p\u016fd\u011b z\u016fstanou i n\u011bkolik let po jeho odum\u0159en\u00ed nebo odstran\u011bn\u00ed,\u201c<\/em> \u0159\u00edk\u00e1 Vojt\u011bch Lanta z Botanick\u00e9ho \u00fastavu AV \u010cR, hlavn\u00ed autor studie. \u201eNadbytek \u017eivin br\u00e1n\u00ed n\u00e1vratu p\u016fvodn\u00edch rostlin. Vegetace sice vykazuje zn\u00e1mky zlep\u0161en\u00ed, ale obnovuje se jen pomalu,\u201c<\/em> dod\u00e1v\u00e1.<\/span><\/p>\n

Zcela jinak na zm\u011bny reagovali brouci. \u201eBrouk\u016f bylo nejm\u00e9n\u011b v \u017eiv\u00fdch ak\u00e1tin\u00e1ch. Po odstran\u011bn\u00ed ak\u00e1tu jich v\u00fdrazn\u011b p\u0159ibylo a jejich druhov\u00e9 slo\u017een\u00ed se p\u0159ibl\u00ed\u017eilo spole\u010denstv\u016fm p\u016fvodn\u00edch doubrav,\u201c<\/em> \u0159\u00edk\u00e1 Luk\u00e1\u0161 \u010c\u00ed\u017eek z Biologick\u00e9ho centra AV \u010cR.\u00a0<\/span><\/p>\n

Studie, ned\u00e1vno zve\u0159ejn\u011bn\u00e1 v presti\u017en\u00edm mezin\u00e1rodn\u00edm \u010dasopise Journal of Environmental Management, ukazuje, \u017ee likvidace invazn\u00edho ak\u00e1tu je sice nezbytn\u00fdm krokem, ale sama o sob\u011b nesta\u010d\u00ed. Zat\u00edmco \u017eivo\u010dichov\u00e9 dok\u00e1\u017eou na zm\u011bny reagovat pom\u011brn\u011b rychle, n\u00e1vrat p\u016fvodn\u00ed vegetace v\u00fdrazn\u011b zpomaluje \u201epam\u011b\u0165 p\u016fdy\u201c. Auto\u0159i proto doporu\u010duj\u00ed kombinovat odstra\u0148ov\u00e1n\u00ed ak\u00e1tu s dal\u0161\u00edmi opat\u0159en\u00edmi, nap\u0159\u00edklad c\u00edlen\u00fdm v\u00fdsevem p\u016fvodn\u00edch druh\u016f, \u0159\u00edzenou pastvou nebo v n\u011bkter\u00fdch p\u0159\u00edpadech i odstran\u011bn\u00edm horn\u00ed vrstvy p\u016fdy. Jen tak je mo\u017en\u00e9 dos\u00e1hnout dlouhodob\u00e9 obnovy druhov\u011b bohat\u00fdch a stabiln\u00edch les\u016f.<\/span><\/p>\n

 <\/p>\n

Text a foto: (tz-av\u010dr)<\/strong><\/p>\n

 <\/p>\n

\"\"
P\u016fvodn\u00ed sv\u011btl\u00e9 doubravy se py\u0161n\u00ed druhov\u011b bohat\u00fdm podrostem. (Autor: Ji\u0159\u00ed Rom)<\/figcaption><\/figure>\n

 <\/p>\n

\"\"
K\u0159ivatec \u010desk\u00fd (Gagea bohemica) je jarn\u00ed geofyt ohro\u017een\u00fd invaz\u00ed ak\u00e1tu. Roste na chud\u00fdch p\u016fd\u00e1ch a oslun\u011bn\u00fdch m\u00edstech s nezapojenou vegetac\u00ed (Autor: Ji\u0159\u00ed Rom).<\/figcaption><\/figure>\n

 <\/p>\n

\"\"
3) Pohled na ak\u00e1tinu po o\u0161et\u0159en\u00ed a odstran\u011bn\u00ed strom\u016f (Autor: Ji\u0159\u00ed Rom).<\/figcaption><\/figure>\n
\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

  Invaze <\/p>\n","protected":false},"author":2,"featured_media":370784,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[128,174],"tags":[],"jetpack_featured_media_url":"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2026\/03\/19\/Brouci-se-vraceji-rostliny-vahaji-1.jpg","_links":{"self":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/370783"}],"collection":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=370783"}],"version-history":[{"count":5,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/370783\/revisions"}],"predecessor-version":[{"id":370793,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/370783\/revisions\/370793"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/media\/370784"}],"wp:attachment":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=370783"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=370783"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=370783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}