Bratislava 7. j\u00fala (TASR) – V bratislavsk\u00fdch mestsk\u00fdch lesoch je mo\u017en\u00e9 e\u0161te p\u00e1r dn\u00ed pozorova\u0165 po zotmen\u00ed svetlu\u0161ky. Po\u010detn\u00e9 b\u00fdvaj\u00fa napr\u00edklad v Ka\u010d\u00ednskej doline, ale i v okol\u00ed Koliby \u010di Kamz\u00edka a nieko\u013eko desiatok ich lieta i v arbor\u00e9te. Pre TASR to uviedol Michal Noga z Mestsk\u00fdch lesov v Bratislave.<\/p>\n
\u201eE\u0161te p\u00e1r dn\u00ed bude mo\u017en\u00e9 v mestsk\u00fdch lesoch po zotmen\u00ed pozorova\u0165 \u010darovn\u00e9 svetielka sv\u00e4toj\u00e1nskych mu\u0161iek. Toto ka\u017edoro\u010dn\u00e9 divadlo trv\u00e1 pribli\u017ene dva t\u00fd\u017edne a pr\u00e1ve sa ch\u00fdli ku koncu,\u201c skon\u0161tatoval Noga.<\/p>\n
V\u00fdskyt svetlu\u0161iek je pod\u013ea neho kr\u00e1tkodob\u00fd. Dospel\u00e9 jedince toti\u017e \u017eij\u00fa len nieko\u013eko t\u00fd\u017ed\u0148ov, v mestsk\u00fdch lesoch v Bratislave je to pod\u013ea neho \u201epr\u00e1zdninov\u00fd druh\u201c. Prv\u00e9 svetlu\u0161ky je mo\u017en\u00e9 zvy\u010dajne spozorova\u0165 posledn\u00fd j\u00fanov\u00fd t\u00fd\u017ede\u0148 a posledn\u00e9 koncom prv\u00e9ho j\u00falov\u00e9ho t\u00fd\u017ed\u0148a. Ako uviedol, z\u00e1vis\u00ed to najm\u00e4 od priebehu po\u010dasia, teploty, vetra \u010di zr\u00e1\u017eok.<\/p>\n
Svetlu\u0161ky je mo\u017en\u00e9 pozorova\u0165 takmer v\u0161ade, pri\u010dom na niektor\u00fdch miestach ich je prirodzene viac. S\u00fa to \u010dasto okraje star\u0161\u00edch lesn\u00fdch porastov s rozvinut\u00fdm bylinn\u00fdm podrastom. Vyh\u00fdbaj\u00fa sa v\u0161ak miestam s umel\u00fdm osvetlen\u00edm, ke\u010f\u017ee to ich ru\u0161\u00ed. Av\u0161ak i pozorovanie svetlu\u0161iek m\u00e1 pod\u013ea neho svoje pravidl\u00e1.<\/p>\n
\u201eAk sa za nimi vyberieme so svietiacou baterkou, pravdepodobne takmer \u017eiadnu neuvid\u00edme. Najn\u00e1padnej\u0161ie s\u00fa prirodzene v \u00faplnej tme,\u201c podotkol Noga.<\/p>\n
Svetlo produkuj\u00fa procesom, ktor\u00fd sa vol\u00e1 bioluminiscencia. Ide o chemick\u00fa reakciu, pri ktorej vznik\u00e1 svetlo, svoju \u00falohu v \u0148om zohr\u00e1va l\u00e1tka s n\u00e1zvom \u201elucifer\u00edn\u201c. Svietenie je pritom komunika\u010dn\u00fd n\u00e1stroj sl\u00fa\u017eiaci na pril\u00e1kanie partnera a rozpoznanie vlastn\u00e9ho druhu.<\/p>\n
\u201eSvetlu\u0161ky s\u00fa pritom prekvapivo presn\u00e9 – prv\u00e9 sveteln\u00e9 sign\u00e1ly sa objavuj\u00fa pribli\u017ene 30 a\u017e 35 min\u00fat po z\u00e1pade slnka,\u201c poznamenal Noga. Okrem nich s\u00fa v t\u00fdchto d\u0148och pod\u013ea neho n\u00e1padn\u00e9 aj hlasy ml\u00e1\u010fat sovy oby\u010dajnej, ktor\u00e9 sa oz\u00fdvaj\u00fa takmer hne\u010f po z\u00e1pade slnka. Z\u00e1rove\u0148 je mo\u017en\u00e9 stretn\u00fa\u0165 i \u010fal\u0161\u00edch no\u010dn\u00fdch \u201eobyvate\u013eov\u201c mestsk\u00fdch lesov, a to je\u017ee, \u017eaby, vz\u00e1cnej\u0161ie i l\u00ed\u0161ku \u010di jazveca.<\/p>\n","protected":false},"excerpt":{"rendered":"Bratislava 7. j\u00fala (TASR) – V bratislavsk\u00fdch mestsk\u00fdch lesoch je mo\u017en\u00e9 e\u0161te p\u00e1r dn\u00ed pozorova\u0165 po zotmen\u00ed svetlu\u0161ky.…\n","protected":false},"author":2,"featured_media":118052,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[21],"tags":[136,5664,6272,8379,43,40,39,42,41,38799],"class_list":["post-118051","post","type-post","status-publish","format-standard","has-post-thumbnail","category-bratislava","tag-bratislava","tag-lesy","tag-mestske","tag-pozorovanie","tag-sk","tag-slovak","tag-slovakia","tag-slovencina","tag-slovensko","tag-svetlusky"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@sk\/116878714050397865","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/118051","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/comments?post=118051"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/118051\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media\/118052"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media?parent=118051"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/categories?post=118051"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/tags?post=118051"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}