{"id":3062,"date":"2021-05-22T18:15:56","date_gmt":"2021-05-22T17:15:56","guid":{"rendered":"https:\/\/arcus.org.rs\/hun\/?page_id=3062"},"modified":"2021-06-03T22:30:32","modified_gmt":"2021-06-03T21:30:32","slug":"a-nad-szerepe-es-funkcioja","status":"publish","type":"page","link":"https:\/\/arcus.org.rs\/hun\/a-nad-szerepe-es-funkcioja\/","title":{"rendered":"A n\u00e1d szerepe \u00e9s funkci\u00f3ja"},"content":{"rendered":"<div id=\"attachment_3063\" style=\"width: 275px\" class=\"wp-caption alignright\"><a href=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/phragmites.australis.Photo_.Sihelnik.J..jpg\"><img aria-describedby=\"caption-attachment-3063\" loading=\"lazy\" class=\"wp-image-3063\" title=\"N\u00e1d (Photo: Sihelnik J\u00f3zsef)\" src=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/phragmites.australis.Photo_.Sihelnik.J.-300x200.jpg\" alt=\"N\u00e1d (Photo: Sihelnik J\u00f3zsef)\" width=\"265\" height=\"177\" srcset=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/phragmites.australis.Photo_.Sihelnik.J.-300x200.jpg 300w, https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/phragmites.australis.Photo_.Sihelnik.J.-768x512.jpg 768w, https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/phragmites.australis.Photo_.Sihelnik.J..jpg 840w\" sizes=\"(max-width: 265px) 100vw, 265px\" \/><\/a><p id=\"caption-attachment-3063\" class=\"wp-caption-text\">N\u00e1d (Photo: Sihelnik J\u00f3zsef)<\/p><\/div>\n<p style=\"text-align: justify;\">A <strong>n\u00e1d<\/strong> (<em>Phragmites australis<\/em>) nagytermet\u0171 p\u00e1zsitf\u0171f\u00e9le. Vir\u00e1gai nem felt\u0171n\u0151ek, vir\u00e1gzatot alkotnak. M\u00e1s n\u00f6v\u00e9nyekhez hasonl\u00f3an a n\u00e1d is k\u00e9pes ivaros \u00faton, maggal, \u00e9s ivartalanul, sz\u00e1rr\u00f3l vagy gy\u00f6k\u00e9rr\u0151l t\u00f6rt\u00e9n\u0151 szaporod\u00e1sra. A vizes ter\u00fcleteken az ivartalan szaporod\u00e1s domin\u00e1l, ekkor a n\u00e1d els\u0151sorban k\u00fasz\u00f3 riz\u00f3m\u00e1ival terjed. Ezek az egym\u00e1shoz gy\u00f6k\u00e9rt\u00f6rzzsel kapcsol\u00f3d\u00f3, genetikailag azonos kl\u00f3nokb\u00f3l \u00e1ll\u00f3 szupern\u00f6v\u00e9nyek id\u0151vel ak\u00e1r t\u00f6bb sz\u00e1z n\u00e9gyzetm\u00e9teres foltokban domin\u00e1lhatj\u00e1k egy-egy n\u00e1das bizonyos pontjait. A fizikai kapcsolat el\u0151nye, hogy a kl\u00f3n egyedei seg\u00edthetik is egym\u00e1st, vagyis a kedvez\u0151tlen k\u00f6rnyezetben l\u00e9v\u0151 kl\u00f3negyedet a mellette l\u00e9v\u0151k kiseg\u00edtik. Er\u0151s sz\u00e1ra ak\u00e1r n\u00e9gy m\u00e9teresre is megn\u0151het. Levelei p\u00e1rhuzamos erezet\u0171ek. A part menti, id\u0151szakos v\u00edzbor\u00edt\u00e1s\u00fa r\u00e9szekt\u0151l, eg\u00e9szen a k\u00e9tm\u00e9teres v\u00edzm\u00e9lys\u00e9gig behatol. A n\u00e1dasok kulcsfontoss\u00e1g\u00faak az \u00e9l\u0151vil\u00e1g szempontj\u00e1b\u00f3l. Az egy\u00e9bk\u00e9nt jelent\u00e9ktelennek t\u0171n\u0151 n\u00e1das funkci\u00f3ja a tavak \u00f6kosziszt\u00e9m\u00e1j\u00e1ban meglep\u0151en jelent\u0151s. Az \u00e9l\u0151vil\u00e1g sz\u00e1m\u00e1ra a n\u00e1das egy v\u00edzi lak\u00f3telep, amelyre kifejezetten oda kellene figyelni. Eszt\u00e9tikai rendeltet\u00e9se mellett a biol\u00f3giai sokf\u00e9les\u00e9g szempontj\u00e1b\u00f3l j\u00e1tszik f\u0151szerepet. A n\u00e1das egy teljes t\u00e1pl\u00e1l\u00e9kl\u00e1ncot, t\u00e1pl\u00e1l\u00e9kh\u00e1l\u00f3zatot foglal mag\u00e1ba, kezdve az alg\u00e1kt\u00f3l, a bakt\u00e9riumokon kereszt\u00fcl, eg\u00e9szen a rovarokon \u00e1t, a gerincesekig. A Topolyai-t\u00f3 eset\u00e9ben ugyancsak rendk\u00edv\u00fcl fontos a n\u00e1das, hiszen ez adja a parti z\u00f3na z\u00f6m\u00e9nek veget\u00e1ci\u00f3j\u00e1t, term\u00e9szetes n\u00f6v\u00e9nyzet\u00e9t. Igen jelent\u0151s szerepe van a part fel\u0151l \u00e9rkez\u0151 szennyez\u0151d\u00e9sek sz\u0171r\u00e9s\u00e9ben, hiszen tavunk egy nagy v\u00f6lgyben helyezkedik el, melyet agr\u00e1rter\u00fcletek \u00f6veznek, ez\u00e9rt az egyre intenz\u00edvebben haszn\u00e1lt m\u0171tr\u00e1gy\u00e1k \u00e9s k\u00fcl\u00f6nf\u00e9le permetszerek maradv\u00e1nyai n\u00e1das h\u00edj\u00e1n mind a t\u00f3 viz\u00e9be jutn\u00e1nak. Emellett a Krivaja patak \u00e1ltal sz\u00e1ll\u00edtott v\u00edzb\u0151l a n\u00e1d szint\u00e9n f\u00f6lveszi a szennyez\u0151 anyagokat, \u00edgy ezek a t\u00f3 ny\u00edlt viz\u00e9be m\u00e1r nem jutnak el.<\/p>\n<p style=\"text-align: right;\">Sihelnik J\u00f3zsef<\/p>\n<p><strong>V. <a href=\"https:\/\/arcus.org.rs\/hun\/a-nadasban-elo-rovarok\/\"><em>A n\u00e1dasban \u00e9l\u0151 rovarok<\/em><\/a><\/strong> \u203a\u203a\u203a<\/p>\n<p>\u2039\u2039\u2039 <a href=\"https:\/\/arcus.org.rs\/hun\/lagyszaru-novenyek-a-part-menten\/\"><em>vissza<\/em><\/a><\/p>\n<div id=\"attachment_3064\" style=\"width: 271px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadas.Photo_.Sihelnik.J..jpg\"><img aria-describedby=\"caption-attachment-3064\" loading=\"lazy\" class=\"wp-image-3064\" title=\"N\u00e1das (Photo: Sihelnik J\u00f3zsef)\" src=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadas.Photo_.Sihelnik.J.-300x200.jpg\" alt=\"N\u00e1das (Photo: Sihelnik J\u00f3zsef)\" width=\"261\" height=\"174\" srcset=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadas.Photo_.Sihelnik.J.-300x200.jpg 300w, https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadas.Photo_.Sihelnik.J.-768x512.jpg 768w, https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadas.Photo_.Sihelnik.J..jpg 840w\" sizes=\"(max-width: 261px) 100vw, 261px\" \/><\/a><p id=\"caption-attachment-3064\" class=\"wp-caption-text\">N\u00e1das (Photo: Sihelnik J\u00f3zsef)<\/p><\/div>\n<div id=\"attachment_3067\" style=\"width: 271px\" class=\"wp-caption alignright\"><a href=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/part.menti_.nadas_.Photo_.Sihelnik.J..jpg\"><img aria-describedby=\"caption-attachment-3067\" loading=\"lazy\" class=\"wp-image-3067\" title=\"Part menti n\u00e1das (Photo: Sihelnik J\u00f3zsef)\" src=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/part.menti_.nadas_.Photo_.Sihelnik.J.-300x200.jpg\" alt=\"Part menti n\u00e1das (Photo: Sihelnik J\u00f3zsef)\" width=\"261\" height=\"174\" srcset=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/part.menti_.nadas_.Photo_.Sihelnik.J.-300x200.jpg 300w, https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/part.menti_.nadas_.Photo_.Sihelnik.J.-768x512.jpg 768w, https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/part.menti_.nadas_.Photo_.Sihelnik.J..jpg 840w\" sizes=\"(max-width: 261px) 100vw, 261px\" \/><\/a><p id=\"caption-attachment-3067\" class=\"wp-caption-text\">Part menti n\u00e1das (Photo: Sihelnik J\u00f3zsef)<\/p><\/div>\n<div id=\"attachment_3065\" style=\"width: 271px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadas.a.gyep_.hataranal.Photo_.Sihelnik.J..jpg\"><img aria-describedby=\"caption-attachment-3065\" loading=\"lazy\" class=\"wp-image-3065\" title=\"N\u00e1das a gyep hat\u00e1r\u00e1n\u00e1l (Photo: Sihelnik J\u00f3zsef)\" src=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadas.a.gyep_.hataranal.Photo_.Sihelnik.J.-300x200.jpg\" alt=\"N\u00e1das a gyep hat\u00e1r\u00e1n\u00e1l (Photo: Sihelnik J\u00f3zsef)\" width=\"261\" height=\"174\" srcset=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadas.a.gyep_.hataranal.Photo_.Sihelnik.J.-300x200.jpg 300w, https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadas.a.gyep_.hataranal.Photo_.Sihelnik.J.-768x512.jpg 768w, https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadas.a.gyep_.hataranal.Photo_.Sihelnik.J..jpg 840w\" sizes=\"(max-width: 261px) 100vw, 261px\" \/><\/a><p id=\"caption-attachment-3065\" class=\"wp-caption-text\">N\u00e1das a gyep hat\u00e1r\u00e1n\u00e1l (Photo: Sihelnik J\u00f3zsef)<\/p><\/div>\n<div id=\"attachment_3066\" style=\"width: 271px\" class=\"wp-caption alignright\"><a href=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadszegely.az_.oldalso.volgyben.Photo_.Sihelnik.J..jpg\"><img aria-describedby=\"caption-attachment-3066\" loading=\"lazy\" class=\"wp-image-3066\" title=\"N\u00e1dszeg\u00e9ly az oldals\u00f3 v\u00f6lgyben (Photo: Sihelnik J\u00f3zsef)\" src=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadszegely.az_.oldalso.volgyben.Photo_.Sihelnik.J.-300x200.jpg\" alt=\"N\u00e1dszeg\u00e9ly az oldals\u00f3 v\u00f6lgyben (Photo: Sihelnik J\u00f3zsef)\" width=\"261\" height=\"174\" srcset=\"https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadszegely.az_.oldalso.volgyben.Photo_.Sihelnik.J.-300x200.jpg 300w, https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadszegely.az_.oldalso.volgyben.Photo_.Sihelnik.J.-768x512.jpg 768w, https:\/\/arcus.org.rs\/hun\/wp-content\/uploads\/2021\/05\/nadszegely.az_.oldalso.volgyben.Photo_.Sihelnik.J..jpg 840w\" sizes=\"(max-width: 261px) 100vw, 261px\" \/><\/a><p id=\"caption-attachment-3066\" class=\"wp-caption-text\">N\u00e1dszeg\u00e9ly az oldals\u00f3 v\u00f6lgyben (Photo: Sihelnik J\u00f3zsef)<\/p><\/div>\n<div class=\"fcbkbttn_buttons_block\" id=\"fcbkbttn_left\"><div class=\"fcbkbttn_like \"><fb:like href=\"https:\/\/arcus.org.rs\/hun\/a-nad-szerepe-es-funkcioja\/\" action=\"like\" colorscheme=\"light\" layout=\"standard\" show-faces='false' width=\"450px\" size=\"small\"><\/fb:like><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>A n\u00e1d (Phragmites australis) nagytermet\u0171 p\u00e1zsitf\u0171f\u00e9le. Vir\u00e1gai nem felt\u0171n\u0151ek, vir\u00e1gzatot alkotnak. M\u00e1s n\u00f6v\u00e9nyekhez hasonl\u00f3an a n\u00e1d is k\u00e9pes ivaros \u00faton, maggal, \u00e9s ivartalanul, sz\u00e1rr\u00f3l vagy gy\u00f6k\u00e9rr\u0151l t\u00f6rt\u00e9n\u0151 szaporod\u00e1sra. A vizes ter\u00fcleteken az ivartalan szaporod\u00e1s domin\u00e1l, ekkor a n\u00e1d els\u0151sorban k\u00fasz\u00f3&hellip; <\/p>\n","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","meta":{"_mi_skip_tracking":false,"spay_email":""},"jetpack_shortlink":"https:\/\/wp.me\/P40Haz-No","jetpack_sharing_enabled":true,"jetpack_likes_enabled":false,"_links":{"self":[{"href":"https:\/\/arcus.org.rs\/hun\/wp-json\/wp\/v2\/pages\/3062"}],"collection":[{"href":"https:\/\/arcus.org.rs\/hun\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/arcus.org.rs\/hun\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/arcus.org.rs\/hun\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/arcus.org.rs\/hun\/wp-json\/wp\/v2\/comments?post=3062"}],"version-history":[{"count":2,"href":"https:\/\/arcus.org.rs\/hun\/wp-json\/wp\/v2\/pages\/3062\/revisions"}],"predecessor-version":[{"id":3089,"href":"https:\/\/arcus.org.rs\/hun\/wp-json\/wp\/v2\/pages\/3062\/revisions\/3089"}],"wp:attachment":[{"href":"https:\/\/arcus.org.rs\/hun\/wp-json\/wp\/v2\/media?parent=3062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}