{"id":862,"date":"2021-05-26T17:01:52","date_gmt":"2021-05-26T17:01:52","guid":{"rendered":"http:\/\/www.ritosaurus.com\/?p=862"},"modified":"2021-05-27T05:54:05","modified_gmt":"2021-05-27T05:54:05","slug":"biological-diversity","status":"publish","type":"post","link":"https:\/\/ritosaurus.com\/hr\/posts\/biological-diversity\/","title":{"rendered":"Biolo\u0161ka raznolikost"},"content":{"rendered":"<div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"684\" src=\"http:\/\/www.ritosaurus.com\/wp-content\/uploads\/2021\/05\/IMG_20210526_073213_371-1024x684.jpg\" alt=\"\" class=\"wp-image-863\" srcset=\"https:\/\/ritosaurus.com\/wp-content\/uploads\/2021\/05\/IMG_20210526_073213_371-1024x684.jpg 1024w, https:\/\/ritosaurus.com\/wp-content\/uploads\/2021\/05\/IMG_20210526_073213_371-300x200.jpg 300w, https:\/\/ritosaurus.com\/wp-content\/uploads\/2021\/05\/IMG_20210526_073213_371-768x513.jpg 768w, https:\/\/ritosaurus.com\/wp-content\/uploads\/2021\/05\/IMG_20210526_073213_371-1536x1026.jpg 1536w, https:\/\/ritosaurus.com\/wp-content\/uploads\/2021\/05\/IMG_20210526_073213_371-2048x1367.jpg 2048w, https:\/\/ritosaurus.com\/wp-content\/uploads\/2021\/05\/IMG_20210526_073213_371-16x12.jpg 16w, https:\/\/ritosaurus.com\/wp-content\/uploads\/2021\/05\/IMG_20210526_073213_371-930x620.jpg 930w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Pro\u0161le subote, 22. svibnja, obilje\u017een je Me\u0111unarodni dan biolo\u0161ke raznolikosti. Ali znamo li \u0161to taj pojam ozna\u010dava?<\/p>\n\n\n\n<p>Biolo\u0161ka raznolikost je raznolikost \u017eivota na Zemlji \u2013 no ona ne podrazumijeva samo broj vrsta. Dok nam bogatstvo vrsta daje informaciju o broju razli\u010ditih vrsta na odre\u0111enom podru\u010dju, bioraznolikost je mnogo vi\u0161e od toga.<\/p>\n\n\n\n<p>Bioraznolikost uklju\u010duje:<\/p>\n\n\n\n<ul><li>raznolikost unutar jedne vrste \u2013 raznolikost gena, geneti\u010dka varijabilnost<\/li><li>raznolikost izme\u0111u vrsta \u2013 broj razli\u010ditih vrsta na nekom podru\u010dju (bogatstvo vrsta)<\/li><li>raznolikost ekosustava \u2013 ukupni broj razli\u010ditih ekosustava na nekom podru\u010dju<\/li><\/ul>\n\n\n\n<p>Iz ovoga mo\u017eemo primijetiti da je biolo\u0161ka raznolikost izrazito slo\u017een pojam koji uklju\u010duje nekoliko razina promatranja; zapo\u010dinje s prou\u010davanjem geneti\u010dkog materijala samo jedne vrste, a se\u017ee sve do razine ekosustava, koji uklju\u010duje stotine ili tisu\u0107e razli\u010ditih vrsta.<\/p>\n\n\n\n<p>Prije nekoliko tjedana posjetila sam jedan od nacionalnih parkova Hrvatske koji je poznat po o\u010duvanim \u0161umama \u2013 Nacionalni park Risnjak. Prvo \u0161to sam primijetila, tek nekoliko stotina metara nakon ulaska u Park, bile su voluharice (glodavci nalik mi\u0161evima). Ovo je bio moj prvi susret s voluharicama u divljini, usred bijela dana i na tek nekoliko metara udaljenosti.<\/p>\n\n\n\n<p>\u201eTek sam u\u0161la u Park i ve\u0107 sam vidjela voluharicu! \u0160to dalje?\u201c<\/p>\n\n\n\n<p>Ali, istini za volju, voluharice su bile jedini sisavci (osim ljudi i pasa) koje sam tog dana susrela \u2013 i to mnogo voluharica. Skakale su glasno po suhom li\u0161\u0107u, skrivale se u svojim rupama, oprezno pratile moje kretanje, padale s trupaca poslo\u017eenih uza \u0161umski put \u2013 bile su posvuda.<\/p>\n\n\n\n<p>Na prvi pogled, netko bi mogao pomisliti da bogatstvo vrsta na tom podru\u010dju nije veliko \u2013 prisutna je tek jedna vrsta sisavaca, ali s velikim brojem jedinki. No Risnjak je podru\u010dje velike bioraznolikosti i jedna \u0161etnja nije ni pribli\u017eno dovoljna za procjenu bogatstva vrsta na tom lokalitetu.<\/p>\n\n\n\n<p>Procjena bioraznolikosti zahtijeva puno znanja i rada. Neka istra\u017eivanja traju godinama, a neka i desetlje\u0107ima.<\/p>\n\n\n\n<p>Prilikom procjene bioraznolikosti odre\u0111enog podru\u010dja, znanstvenici istra\u017euju dva parametra: bogatstvo vrsta \u2013 broj razli\u010ditih vrsta na tom podru\u010dju, i relativnu abundanciju \u2013 broj jedinki svake vrste na tom podru\u010dju.<\/p>\n\n\n\n<p>Za\u0161to su ba\u0161 ovi parametri va\u017eni? Zato \u0161to nam oni mogu nagovijestiti je li ekosustav u ravnote\u017ei; ekosustav u ravnote\u017ei je bogat vrstama i nijedna vrsta nije zastupljena s izrazito velikim brojem jedinki koje bi naru\u0161ile ravnote\u017eu. U stabilnom ekosustavu prisutni su primarni proizvo\u0111a\u010di, razlaga\u010di, predatori i plijen u mjeri koja omogu\u0107ava odr\u017eavanje stabilne hranidbene mre\u017ee.<\/p>\n\n\n\n<p>Me\u0111utim, ako jedna vrsta buja i uspijeva, a ostale vrste oskudijevaju, hranidbena mre\u017ea gubi stabilnost i ekosustav dolazi u neravnote\u017eu.<\/p>\n\n\n\n<p>Primjerice, ako se vr\u0161ni predator iz odre\u0111enog razloga razmno\u017ei i nastani podru\u010dje u velikom broju, raste i potreba za hranom, \u0161to vodi ka smanjenoj abundanciji vrsta koje tom predatoru slu\u017ee kao plijen.<\/p>\n\n\n\n<p>Biolo\u0161ka raznolikost mnogo je vi\u0161e od \u017eivopisnih boja koraljnih grebena i gromoglasnih simfonija tropskih ki\u0161nih \u0161uma. Odr\u017eavanje bioraznolikosti vi\u0161e je od pukog odr\u017eavanja prirode zanimljivom i nepredvidljivom.<\/p>\n\n\n\n<p>Bioraznolikost zna\u010di zdrav ekosustav, zdrave rijeke, zdrave \u0161ume. Zna\u010di zdrava mora puna ribljih, planktonskih i drugih vrsta, koje zatim podr\u017eavaju ptice i sisavce \u2013 uklju\u010duju\u0107i i nas.<\/p>\n\n\n\n<p>Bioraznolikost je ravnote\u017ea, koju je danas sve te\u017ee odr\u017eati zbog razli\u010ditih ljudskih aktivnosti.<\/p>\n\n\n\n<p>\u010citave prirodne zajednice ovise jedne o drugima, a mi ovisimo o prirodi i njenoj ravnote\u017ei. Rade\u0107i protiv prirode, radimo protiv sebe.<\/p>\n\n\n\n<div style=\"height:71px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<p class=\"has-small-font-size\">Literatura<\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"https:\/\/www.britannica.com\">https:\/\/www.britannica.com<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"http:\/\/www.haop.hr\/\">http:\/\/www.haop.hr<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"https:\/\/serc.si.edu\/\">https:\/\/serc.si.edu<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"https:\/\/www.worldwildlife.org\">https:\/\/www.worldwildlife.org<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"https:\/\/www.theguardian.com\">https:\/\/www.theguardian.com<\/a><\/p>\n\n\n\n<p class=\"has-small-font-size\">Cleland, E. E. (2011): <em>Biodiversity and Ecosystem Stability<\/em>. Nature Education Knowledge 3(10): 14<\/p>","protected":false},"excerpt":{"rendered":"<p>This Saturday, the 22nd of May, was the International Day for Biological Diversity. But, what exactly does this term mean? Biodiversity is the variety of life on our planet &#8211; but it is not only a number of different species. While species richness gives us the number of different species in a certain area, biodiversity&hellip;&nbsp;<a href=\"https:\/\/ritosaurus.com\/hr\/posts\/biological-diversity\/\" class=\"\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Biolo\u0161ka raznolikost<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":863,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"[\"title\",\"meta\",\"content\",\"comments\"]","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[9],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Biological diversity - Ritosaurus<\/title>\n<meta name=\"description\" content=\"This Saturday, the 22nd of May, was the International Day for Biological Diversity. 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