{"id":3089,"date":"2009-01-08T10:09:37","date_gmt":"2009-01-08T09:09:37","guid":{"rendered":"https:\/\/botany.cz\/cs\/carex-hostiana\/"},"modified":"2024-12-19T12:55:40","modified_gmt":"2024-12-19T11:55:40","slug":"carex-hostiana","status":"publish","type":"post","link":"https:\/\/botany.cz\/cs\/carex-hostiana\/","title":{"rendered":"CAREX HOSTIANA DC. – ost\u0159ice Hostova \/ ostrica Hostova"},"content":{"rendered":"

Syn.:<\/strong> Carex hornschuchiana<\/em> Hoppe
\n\u010ce\u013ea\u010f:<\/strong> Cyperaceae<\/a><\/em> – \u0161\u00e1chorovit\u00e9 \/ \u0161achorovit\u00e9<\/p>\n

\"Carex<\/p>\n

Roz\u0161\u00edrenie:<\/strong> Eur\u00f3psky druh. Oblas\u0165 s\u00favisl\u00e9ho are\u00e1lu zah\u0155\u0148a Britsk\u00e9 ostrovy, ju\u017en\u00fa a\u017e stredn\u00fa \u0160kandin\u00e1viu, pobaltsk\u00e9 \u0161t\u00e1ty, stredn\u00fa Eur\u00f3pu na juh po Franc\u00fazsko, alpsk\u00fa oblas\u0165, severn\u00e9 Taliansko, Chorv\u00e1tsko a Rumunsko. Izolovan\u00e9 lokality s\u00fa na Faersk\u00fdch ostrovoch, Pyrenejskom polostrove, Gr\u00e9cku, Turecku a na Kaukaze. V Severnej Amerike, na pomerne malom \u00fazem\u00ed New Foundlandu, je zn\u00e1my tax\u00f3n Carex hostiana<\/em> var. laurentiana<\/em> (Fern. et Wieg.) Fern et Wieg., niekedy hodnoten\u00fd na \u00farovni poddruhu.
\nV \u010ceskej republike je uv\u00e1dzan\u00fd vz\u00e1cne roztr\u00fasen\u00fd v\u00fdskyt v Polab\u00ed, na Dokesku, v Podorlickej pahorkatine, v okol\u00ed Chrudimi, Kladna, Vimperku a na Mostecku, na Morave v Horno a Dolnomoravskom \u00favale. Na Slovensku predov\u0161etk\u00fdm vo vn\u00fatrokarpatsk\u00fdch kotlin\u00e1ch: Turiec, Liptov, Spi\u0161, vz\u00e1cne v n\u00ed\u017ein\u00e1ch \u2013 Z\u00e1horsk\u00e1 a Podunajsk\u00e1. <\/p>\n

Ekol\u00f3gia:<\/strong> Rastie na b\u00e1zick\u00fdch slatinn\u00fdch ra\u0161elinisk\u00e1ch a ich l\u00fa\u010dnych okrajoch, na miner\u00e1lne bohat\u00fdch p\u00f4dach, dobre zn\u00e1\u0161a rozkol\u00edsan\u00fd vodn\u00fd re\u017eim. Ostrica Hostova m\u00e1 \u0165a\u017eisko v\u00fdskytu v podhorsk\u00fdch poloh\u00e1ch, vz\u00e1cne sa vyskytuje v n\u00ed\u017ein\u00e1ch, do horsk\u00fdch pol\u00f4h nezasahuje. Patr\u00ed medzi typick\u00e9 druhy zv\u00e4zu Molinion<\/em>. Kvitne v m\u00e1ji a\u017e j\u00fani.<\/p>\n

\"Carex<\/p>\n

Opis:<\/strong> Trv\u00e1ca, v riedko trsnat\u00e1 rastlina vysok\u00e1 25\u201350(\u201360) cm. By\u013e priama, v dolnej polovici listnat\u00e1, tupo 3-hrann\u00e1, hladk\u00e1. Po\u0161vy doln\u00fdch listov \u017eltohned\u00e9, vl\u00e1knito rozpadav\u00e9. \u010cepele listov ploch\u00e9, k\u00fdlnat\u00e9, tuh\u00e9, na okraji drsn\u00e9, \u0161irok\u00e9 2\u20134 mm, modrozelen\u00e9. Doln\u00fd liste\u0148 podobn\u00fd listom. S\u00fakvetie zlo\u017een\u00e9 z 2\u20136 oddialen\u00fdch, stopkat\u00fdch, priamych klasov. Horn\u00fd so sam\u010d\u00edmi, ostatn\u00e9 klasy so sami\u010d\u00edmi kvetmi. Plevy \u010dervenohned\u00e9 a\u017e tmavohned\u00e9, blanito obr\u00faben\u00e9. Pamech\u00fariky dlh\u0161ie ako plevy, \u017eltozelen\u00e9, s kr\u00e1tkym zob\u00e1\u010dikom. <\/p>\n

Z\u00e1meny:<\/strong> Druh \u010dasto zamie\u0148an\u00fd s ostricou oddialenou (Carex distans<\/a><\/em>), t\u00e1 je husto trsnat\u00e1, \u017eltozelen\u00e1 a viazan\u00e1 predov\u0161etk\u00fdm na zasolen\u00e9 biotopy (fakultat\u00edvny halofyt) i ke\u010f sa ob\u010das vyskytuje na slatin\u00e1ch s vysok\u00fdm obsahom b\u00e1z. Vz\u00e1cne (napr. na Spi\u0161i) rast\u00fa na lokalit\u00e1ch spolo\u010dne.<\/p>\n

Ohrozenie a ochrana:<\/strong> Mnoh\u00e9 lokality ostrice Hostovej, najm\u00e4 v ni\u017e\u0161\u00edch poloh\u00e1ch, zanikli ich priamym zni\u010den\u00edm antropickou \u010dinnos\u0165ou: odvod\u0148ovan\u00edm, \u0165a\u017ebou ra\u0161eliny, intenzifik\u00e1ciou po\u013enohospod\u00e1rstva. Dosia\u013e existuj\u00face lokality ohrozuje sekund\u00e1rna sukcesia, najm\u00e4 zarastanie n\u00e1letov\u00fdmi drevinami. Ako druh toleruj\u00faci kol\u00edsanie hladiny podzemnej vody dok\u00e1\u017ee pre\u017ei\u0165 \u010diasto\u010dn\u00e9 odvodnenie lokality. V \u010cR patr\u00ed medzi silno ohrozen\u00e9 (C2t)<\/a> a z\u00e1konom chr\u00e1nen\u00e9 druhy (\u00a72)<\/a>, na Slovensku medzi zranite\u013en\u00e9 (VU)<\/a> druhy, nie je z\u00e1konom chr\u00e1nen\u00e1.<\/p>\n

\"Carex\"Carex
\n\"Carex\"Carex<\/p>\n

Foto: 14. 6. 2005 a 30. 5. 2006 (Slovensko, Spi\u0161sk\u00e9 kotliny) a 5. 6. 2007 (Slovensko, Liptovsk\u00e1 kotlina).<\/p>\n","protected":false},"excerpt":{"rendered":"

Syn.: Carex hornschuchiana Hoppe \u010ce\u013ea\u010f: Cyperaceae – \u0161\u00e1chorovit\u00e9 \/ \u0161achorovit\u00e9<\/p>\n","protected":false},"author":52,"featured_media":189077,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[20,8,38,25,15,12,22],"tags":[],"fifu_image_url":"\/foto\/carexhostherb1.jpg","_links":{"self":[{"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/posts\/3089"}],"collection":[{"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/users\/52"}],"replies":[{"embeddable":true,"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/comments?post=3089"}],"version-history":[{"count":3,"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/posts\/3089\/revisions"}],"predecessor-version":[{"id":219337,"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/posts\/3089\/revisions\/219337"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/media\/189077"}],"wp:attachment":[{"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/media?parent=3089"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/categories?post=3089"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/botany.cz\/cs\/wp-json\/wp\/v2\/tags?post=3089"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}