Tasmanijoje gamtosaugininkai skubiai imasi priemoni\u0173, kad i\u0161saugot\u0173 itin ret\u0105 vietin\u0119 g\u0117lavanden\u0119 \u017euv\u012f Galaxias fontanus. \u0160iai ma\u017eai, tik rytin\u0117je salos dalyje aptinkamai r\u016b\u0161iai vis didesn\u0119 gr\u0117sm\u0119 kelia invazin\u0117 ruda\u017eand\u0117 up\u0117tak\u0117, \u012fve\u017eta dar XIX am\u017eiuje.<\/p>\n
Vertinama, kad Galaxias fontanus populiacija yra smarkiai suma\u017e\u0117jusi ir dabar siekia apie 6 000 individ\u0173. R\u016b\u0161is daugiausia i\u0161liko ma\u017eose, izoliuotose upeli\u0173 atkarpose, kur nat\u016bral\u016bs barjerai, pavyzd\u017eiui, kriokliai, neleid\u017eia pl\u0117\u0161rioms \u017euvims kilti auk\u0161tyn prie\u0161 srov\u0119.<\/p>\n
Kod\u0117l up\u0117tak\u0117 tapo problema?<\/p>\n
Ruda\u017eand\u0117 up\u0117tak\u0117 \u012f Tasmanij\u0105 buvo atgabenta 1864 metais, siekiant sukurti patraukli\u0105 rekreacin\u0119 \u017e\u016bkl\u0119. Per daugiau nei pusantro \u0161imtme\u010dio \u0161i r\u016b\u0161is pla\u010diai paplito salos g\u0117lavandeniuose telkiniuose ir pakeit\u0117 vietini\u0173 \u017euv\u0173 bendrijas.<\/p>\n
Gamtosaugos institucijos pabr\u0117\u017eia, kad up\u0117tak\u0117s ne tik minta smulkesn\u0117mis vietin\u0117mis \u017euvimis, bet ir su jomis konkuruoja d\u0117l maisto bei sl\u0117ptuvi\u0173. D\u0117l to Galaxias fontanus i\u0161nyko i\u0161 dalies istorinio arealo, ypa\u010d \u017eemesn\u0117se ir vidurin\u0117se upi\u0173 atkarpose, ir buvo \u201enustumta\u201c \u012f ma\u017eus auk\u0161tupius.<\/p>\n
K\u0105 daro gamtosaugininkai?<\/p>\n
Siekiant apsaugoti nykstan\u010di\u0105 r\u016b\u0161\u012f, kuriamos up\u0117taki\u0173 neturin\u010dios zonos. Tam statomi specialiai suprojektuoti fiziniai barjerai, kurie stabdo ruda\u017eand\u017ei\u0173 up\u0117taki\u0173 migracij\u0105 \u012f jautrias vietini\u0173 \u017euv\u0173 buveines ir ner\u0161tavietes.<\/p>\n
Ten, kur invazin\u0117s \u017euvys jau prasiver\u017e\u0117, lauko komandos vykdo tikslin\u012f j\u0173 \u0161alinim\u0105, pasitelkdamos speciali\u0105 elektros \u017evejybos \u012frang\u0105. Kai patvirtinama, kad konkreti upelio atkarpa i\u0161valyta, \u012f j\u0105 atsargiai perkeliamos nedidel\u0117s Galaxias fontanus grup\u0117s i\u0161 sveikesni\u0173 populiacij\u0173, kad b\u016bt\u0173 sukurtos naujos, saugesn\u0117s sankaupos.<\/p>\n
Kod\u0117l tai svarbu platesniame kontekste?<\/p>\n
Ekspertai atkreipia d\u0117mes\u012f, kad invazin\u0117s r\u016b\u0161ys yra viena svarbiausi\u0173 biologin\u0117s \u012fvairov\u0117s nykimo prie\u017eas\u010di\u0173 salose ir izoliuotose ekosistemose. Tokiose vietose vietin\u0117s r\u016b\u0161ys da\u017enai evoliucionavo be pana\u0161i\u0173 pl\u0117\u0161r\u016bn\u0173 ar konkurent\u0173, tod\u0117l tampa ypa\u010d pa\u017eeid\u017eiamos, kai \u012f aplink\u0105 patenka nauji, agresyv\u016bs organizmai.<\/p>\n
Tasmanijos pavyzdys rodo, kad gamtosauga neretai remiasi ne viena priemone, o visa grandine sprendim\u0173: buveini\u0173 apsauga, invazini\u0173 r\u016b\u0161i\u0173 kontrol\u0117, populiacij\u0173 perk\u0117limas ir nuolatin\u0117 steb\u0117sena. Kuo ilgiau delsiama, tuo labiau nykstan\u010di\u0173 r\u016b\u0161i\u0173 i\u0161saugojimas brangsta ir darosi sud\u0117tingesnis.<\/p>\n","protected":false},"excerpt":{"rendered":"
Tasmanijoje nykstanti \u017euvis Galaxias fontanus gelbstima nuo invazin\u0117s ruda\u017eand\u0117s up\u0117tak\u0117s: statomi barjerai, \u0161alinami pl\u0117\u0161r\u016bnai ir perkeliamos populiacijos.<\/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":[685,101,41368,2597,3686,41367,27278],"miestas":[],"class_list":["post-53507","post","type-post","status-publish","format-standard","hentry","category-technologijos","tag-biologine-ivairove","tag-ekologija","tag-galaxias-fontanus","tag-gamtosauga","tag-invazines-rusys","tag-rudazande-upetake","tag-tasmanija"],"acf":[],"_links":{"self":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/53507","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=53507"}],"version-history":[{"count":0,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/53507\/revisions"}],"wp:attachment":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media?parent=53507"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/categories?post=53507"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/tags?post=53507"},{"taxonomy":"miestas","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/miestas?post=53507"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}