{"id":69653,"date":"2025-12-21T15:03:07","date_gmt":"2025-12-21T15:03:07","guid":{"rendered":"https:\/\/www.europesays.com\/ee\/69653\/"},"modified":"2025-12-21T15:03:07","modified_gmt":"2025-12-21T15:03:07","slug":"loppev-aasta-pakkus-vortsjarve-elustikule-katsumuste-korval-ka-head","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ee\/69653\/","title":{"rendered":"L\u00f5ppev aasta pakkus V\u00f5rtsj\u00e4rve elustikule katsumuste k\u00f5rval ka head"},"content":{"rendered":"<p>\u00ab\u00dcldiselt teeb V\u00f5rtsj\u00e4rve elustikule halba, kui \u00fchel ajal on madal veetase ja k\u00f5rge temperatuur, sest siis kipuvad vohama vetikad ehk f\u00fctoplankton ja suurtaimed. Kui juhtumisi s\u00fcgisel veel j\u00e4rve madal vesi j\u00e4\u00e4tub, hakkab talvel hapnik j\u00e4rves p\u00f5hjakihist alates otsa saama ning eriti karmi talve korral tekib oht, et kalad surevad,\u00bb k\u00f5neles ta. \u00ab2025 oli aasta, millist tuleb ette v\u00e4ga harva: V\u00f5rtsj\u00e4rve veetase kerkis suve jooksul tublisti ja vee temperatuur p\u00fcsis tavap\u00e4rasest madalam. Nii oli j\u00e4rvega \u00fcldjoontes h\u00e4sti.\u00bb<\/p>\n<p>Eesti maa\u00fclikooli p\u00f5llumajandus- ja keskkonnainstituudi h\u00fcdrobioloogia ja kalanduse \u00f5ppetooli vanemteadurina t\u00f6\u00f6tav Tuvikene m\u00e4rkis, et sademek\u00fcllus t\u00f5i V\u00f5rtsj\u00e4rve valglalt palju orgaanikarikast vett, mis suurendas vee tumedust ja andis konkurentsieelise neile sinivetikaliikidele, kes suudavad veesambas \u00fcles-alla liikuda. Ka saabus sagedaste vihmadega valglalt j\u00e4rve t\u00f5en\u00e4oliselt lisatoitaineid, nagu fosforit ja l\u00e4mmastikku, mis v\u00f5is vetikate kasvu soodustada.<\/p>\n<p>\u00abMaa\u00fclikooli pidevm\u00f5\u00f5tmisi tegeva poijaama andmetel oli f\u00fctoplanktoni kasvu iseloomustava pigmendi klorof\u00fcll-a kontsentratsioon keskmisest m\u00e4rkimisv\u00e4\u00e4rselt k\u00f5rgem mais ja juuni teisel poolel, kuid \u00fclej\u00e4\u00e4nud suve jooksul normil\u00e4hedane,\u00bb k\u00f5neles Tuvikene. \u00abValglalt saabuv orgaanika, mis muudab vee pruunikaks, v\u00f5ib olla p\u00f5hjuseks, miks vetikarakkudes pigmentide hulk kasvab, sest fotos\u00fcnteesiks on vaja p\u00fc\u00fcda rohkem valgust. Samas ei pruugi see tingimata t\u00e4hendada vetikate biomassi olulist suurenemist.\u00bb<\/p>\n<p>Tuvikene r\u00e4\u00e4kis, et juuli teisel poolel vaiksete ja soojade ilmadega tekkis V\u00f5rtsj\u00e4rvel peaaegu meetri jagu keskmisest k\u00f5rgema veetaseme juures temperatuurikihistus, vesi ei segunenud ja p\u00f5hjakihtides langes hapniku kontsentratsioon v\u00e4ga madalale.<\/p>\n","protected":false},"excerpt":{"rendered":"\u00ab\u00dcldiselt teeb V\u00f5rtsj\u00e4rve elustikule halba, kui \u00fchel ajal on madal veetase ja k\u00f5rge temperatuur, sest siis kipuvad vohama&hellip;\n","protected":false},"author":2,"featured_media":69654,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[26,27,37,33,35,34,36,31,32,21,28,29,19,25,23,24,22,20,35363,15513,30,598],"class_list":{"0":"post-69653","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-eesti","8":"tag-breaking-news","9":"tag-breakingnews","10":"tag-ee","11":"tag-eesti","12":"tag-eesti-keel","13":"tag-estonia","14":"tag-estonian","15":"tag-featured-news","16":"tag-featurednews","17":"tag-headlines","18":"tag-latest-news","19":"tag-latestnews","20":"tag-news","21":"tag-populaarseimad-lood","22":"tag-top-stories","23":"tag-topstories","24":"tag-uldised-uudised","25":"tag-uudised","26":"tag-vee-elustik","27":"tag-vesi","28":"tag-viimased-uudised","29":"tag-vortsjarv"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@ee\/115758170394361338","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts\/69653","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/comments?post=69653"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts\/69653\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/media\/69654"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/media?parent=69653"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/categories?post=69653"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/tags?post=69653"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}