{"id":67961,"date":"2026-11-04T11:19:20","date_gmt":"2026-11-04T11:19:20","guid":{"rendered":"https:\/\/cp.snarskis.lt\/index.php\/2026\/11\/04\/1995-aisiais-i-jeloustouna-sugrazinti-vilkai-pakeite-ekosistema-po-80-metu-atzelia-drebules\/"},"modified":"2026-11-04T11:19:20","modified_gmt":"2026-11-04T11:19:20","slug":"1995-aisiais-i-jeloustouna-sugrazinti-vilkai-pakeite-ekosistema-po-80-metu-atzelia-drebules","status":"publish","type":"post","link":"https:\/\/cp.snarskis.lt\/index.php\/2026\/11\/04\/1995-aisiais-i-jeloustouna-sugrazinti-vilkai-pakeite-ekosistema-po-80-metu-atzelia-drebules\/","title":{"rendered":"1995-aisiais \u012f Jeloustoun\u0105 sugr\u0105\u017einti vilkai pakeit\u0117 ekosistem\u0105: po 80 met\u0173 at\u017eelia drebul\u0117s"},"content":{"rendered":"

Jeloustouno nacionaliniame parke JAV po ma\u017edaug 80 met\u0173 pertraukos v\u0117l pastebimai at\u017eelia jaunos drebul\u0117s \u2013 mokslininkai \u0161\u012f pokyt\u012f sieja su vilk\u0173 sugr\u012f\u017eimu \u012f park\u0105.<\/p>\n

Kaip ra\u0161o \u201eFutura-sciences.com\u201c, ry\u0161kesni atsinaujinimo \u017eenklai i\u0161ry\u0161k\u0117jo lyginant skirtingais metais atliktus tuose pa\u010diuose plotuose steb\u0117jimus: vietose, kur ilg\u0105 laik\u0105 beveik nebuvo i\u0161gyvenan\u010di\u0173 jaun\u0173 med\u017ei\u0173, situacija \u0117m\u0117 keistis.<\/p>\n

2012 metais drebulynus tyr\u0119 mokslininkai buvo fiksav\u0119, kad dalyje teritorij\u0173 beveik n\u0117ra jaun\u0173 med\u017ei\u0173, galin\u010di\u0173 u\u017eaugti iki saugesnio auk\u0161\u010dio \u2013 j\u0173 \u016bgliai buvo nuolat apgrau\u017eiami bried\u017ei\u0173.<\/p>\n

V\u0117lesni vizitai \u012f tas pa\u010dias vietas parod\u0117 kitok\u012f vaizd\u0105: ekologas Luke\u2019as Painteris i\u0161 Oregono valstijos universiteto, gr\u012f\u017e\u0119s \u012f anks\u010diau tirtas teritorijas, u\u017efiksavo, kad dalyje masyv\u0173 atsirado gerokai auk\u0161tesni\u0173 jaun\u0173 drebuli\u0173, o tai \u0161iaurin\u0117je parko dalyje nebuvo \u012fprasta nuo 1940-\u0173j\u0173.<\/p>\n

Kas pasikeit\u0117 sugr\u0105\u017einus vilkus<\/h2>\n

Pagrindinis l\u016b\u017eis siejamas su vilk\u0173 sugr\u012f\u017eimu: iki 1926 met\u0173 Jeloustoune \u0161ie pl\u0117\u0161r\u016bnai buvo visi\u0161kai i\u0161naikinti vykdant federalines programas, o j\u0173 nelikus \u0117m\u0117 augti kanopini\u0173 populiacija.<\/p>\n

Daug\u0117jant gyv\u016bn\u0173, sustipr\u0117jo spaudimas jaunai augmenijai \u2013 ypa\u010d drebul\u0117ms, gluosniams ir tuopoms, kuri\u0173 \u016bgliai b\u016bdavo intensyviai ap\u0117dami ir nepasiekdavo brandos.<\/p>\n

1995 metais \u012f park\u0105 i\u0161leista pirmoji 14 vilk\u0173 grup\u0117. Tyr\u0117jai pabr\u0117\u017eia, kad pl\u0117\u0161r\u016bn\u0173 sugr\u012f\u017eimas paveik\u0117 ne tik \u017eol\u0117d\u017ei\u0173 gaus\u0105, bet ir j\u0173 elgsen\u0105.<\/p>\n

Anks\u010diau bandos gal\u0117davo ilgiau laikytis atvirose vietose prie upi\u0173 ir upeli\u0173, kur gausu \u0161vie\u017eios augmenijos. Atsiradus vilk\u0173 gr\u0117smei, gyv\u016bnai tapo atsargesni, da\u017eniau jud\u0117jo ir \u0117m\u0117 vengti kai kuri\u0173 pavojingesni\u0173 zon\u0173, \u012fskaitant tankesnius s\u0105\u017ealynus upi\u0173 u\u017eliejamose teritorijose.<\/p>\n

Kod\u0117l vilkai \u2013 ne vienintelis veiksnys<\/h2>\n

Mokslininkai atkreipia d\u0117mes\u012f, kad augmenijos atsigavimas n\u0117ra vien vilk\u0173 \u201enuopelnas\u201c. Drebulyn\u0173 b\u016bkl\u0119 veikia ir kiti pl\u0117\u0161r\u016bnai bei gyv\u016bnai, pavyzd\u017eiui, lokiai, pumos ar bizonai.<\/p>\n

Svarb\u016bs ir tokie veiksniai kaip or\u0173 s\u0105lygos bei \u017emogaus veikla. Vis d\u0117lto dabartiniai poky\u010diai, tyr\u0117j\u0173 vertinimu, rodo teigiam\u0105 Jeloustouno ekosistemos dinamik\u0105.<\/p>\n","protected":false},"excerpt":{"rendered":"

Jeloustoune po 80 met\u0173 v\u0117l gausiau at\u017eelia drebul\u0117s \u2013 mokslininkai poky\u010dius sieja su 1995 metais \u012f park\u0105 sugr\u0105\u017eintais vilkais.<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7],"tags":[14087,52971,101,151,52970,52972,13654],"miestas":[],"class_list":["post-67961","post","type-post","status-publish","format-standard","hentry","category-technologijos","tag-briedziai","tag-drebules","tag-ekologija","tag-ekosistemos","tag-jeloustouno-nacionalinis-parkas","tag-luke-painter","tag-vilkai"],"acf":[],"_links":{"self":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/67961","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/comments?post=67961"}],"version-history":[{"count":0,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/67961\/revisions"}],"wp:attachment":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media?parent=67961"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/categories?post=67961"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/tags?post=67961"},{"taxonomy":"miestas","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/miestas?post=67961"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}