{"id":168,"date":"2020-04-26T13:32:28","date_gmt":"2020-04-26T11:32:28","guid":{"rendered":"http:\/\/www.ekootpor.com\/?p=168"},"modified":"2022-01-02T16:44:18","modified_gmt":"2022-01-02T15:44:18","slug":"jedni-od-najvaznijih-oprasivaca-u-prirodi-je-ugrozeni-jer-njihov-broj-drasticno-opada","status":"publish","type":"post","link":"http:\/\/www.ekootpor.com\/?p=168","title":{"rendered":"Jedni od najva\u017enijih opra\u0161iva\u010da u prirodi je ugro\u017eeni jer njihov broj drasti\u010dno opada"},"content":{"rendered":"\n

Bumbari, jedni od najva\u017enijih opra\u0161iva\u010da u prirodi, trenutno su ugro\u017eeni jer njihov broj drasti\u010dno opada.<\/p>\n\n\n\n

Prema podacima novog istra\u017eivanja, ovi insekti se mnogo rje\u0111e sre\u0107u nego ranije – u Sjevernoj Americi se dvostruko rje\u0111e vi\u0111aju u svim podru\u010djima u odnosu na 1974. godinu. Oni su specijalizirani za razno\u0161enje peludi i oplodnju mnogih vrsta biljaka, me\u0111u kojima su i poljoprivredna dobra, kao \u0161to su raj\u010dice, borovnice i tikvice, pi\u0161e National Geographic, a prenosi Index.hr.<\/p>\n\n\n\n

Nekoliko nekada \u010destih vrsta bumbara nestalo je iz mnogih podru\u010dja u kojima su se mogli vidjeti, pa su postali lokalno istrebljeni na ovim mjestima.<\/p>\n\n\n\n

Tko je krivac<\/span><\/strong><\/p>\n\n\n\n

U novoj studiji, objavljenoj u \u010dasopisu Science, istra\u017eiva\u010di su koristili slo\u017eeni proces kako bi utvrdili jesu li za opadanje broja bumbara krive klimatske promjene.<\/p>\n\n\n\n

Nau\u010dnici su utvrdili da u podru\u010djima koja su postala toplija u posljednjih nekoliko godina ili u kojima su zabilje\u017eene ekstremne promjene temperature, rje\u0111e mo\u017eemo vidjeti bumbare. U Europi je njihov broj pao za 17 posto u odnosu na po\u010detak 20. stolje\u0107a.<\/p>\n\n\n\n

Prema pristupu ovih nau\u010dnika, “klimatski kaos” je glavni krivac za opadanje broja bumbara.<\/p>\n\n\n\n

-Ovaj pad povezan je s time \u0161to su vrste bile primorane trpjeti temperature s kojima se ranije nisu susrele, ka\u017ee vode\u0107i nau\u010dnik studije Peter Soroye, student postdiplomskih studija sa Sveu\u010dili\u0161ta u Ottawi i isti\u010de da nestanak bumbara u odre\u0111enom podru\u010dju zna\u010di da su se ili preselili ili izumrli.<\/p>\n\n\n\n

Odavno je poznato da bumbarima vi\u0161e odgovara hladnije vrijeme jer imaju sposobnost proizvesti toplinu tokom letenja, zbog \u010dega su \u010desto jedan od prvih insekata koji vidimo u prolje\u0107e.<\/p>\n\n\n\n

Posljednjih pet godina bile su najtoplije zabilje\u017eene u zadnjih 14 desetlje\u0107a. Zbog toga je moglo do\u0107i do pregrijavanja ovih insekata, \u0161to su laboratorijski eksperimenti ustanovili da se mo\u017ee dogoditi ili je na bumbare sve to indirektno utjecalo kroz vegetaciju i cvije\u0107e, zbog \u010dega su dovedeni do izgladnjelosti.<\/p>\n\n\n\n

Bumbari u ve\u0107ini slu\u010dajeva \u017eive godinu dana, a njihove matice zimu naj\u010de\u0161\u0107e provode u razbacanom li\u0161\u0107u ili u zemlji gdje su tako\u0111er izlo\u017eene temperaturnim promjenama i pojavama kao \u0161to su neo\u010dekivano rano topljenje leda i njegovo ponovno formiranje.<\/p>\n\n\n\n

To \u0161to je broj bumbara opao ozbiljan je problem za \u017eivotnu sredinu jer su njihove sposobnosti opra\u0161ivanja potrebne mnogim biljkama.<\/p>\n\n\n\n

Ekonomski problem<\/span><\/strong><\/p>\n\n\n\n

Osim toga, tu je i ekonomski problem – prema nekim procjenama, p\u010dele doprinose s vi\u0161e od 15 milijardi dolara ekonomiji SAD-a opra\u0161uju\u0107i poljoprivredna dobra.<\/p>\n\n\n\n

Klimatske promjene nisu jedini faktor koji je utjecao na smanjenje broja bumbara. Njih ugro\u017eavaju i neonikotinoidi, pesticidi koji su veoma otrovni za sve vrste p\u010dela, kao i uni\u0161tavanje stani\u0161ta pretvaranjem odre\u0111enih divljih podru\u010dja u obradive povr\u0161ine, \u0161irenje patogena i osloba\u0111anje p\u010dela koje nisu s tih prostora, a koje se donose u odre\u0111ena podru\u010dja radi opra\u0161ivanja.<\/p>\n\n\n\n

Kako studija ukazuje na to da ekstremne temperature ugro\u017eavaju bumbare, izgradnjom parkova i sa\u0111enjem stabala, u \u010dijim kro\u0161njama bi se mogli sakriti od topline, mali je korak, ali bi bio od pomo\u0107i. Osim toga, privatni vrtovi s cvije\u0107em koje sami ljudi uzgajaju, za njih su raj ako se ne koriste pesticidi kao \u0161to su neonikotinoidi.<\/p>\n\n\n\n

Eko OTPOR<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Bumbari, jedni od najva\u017enijih opra\u0161iva\u010da u prirodi, trenutno su ugro\u017eeni jer njihov broj drasti\u010dno opada. Prema podacima novog istra\u017eivanja, ovi insekti se mnogo rje\u0111e sre\u0107u nego ranije – u Sjevernoj Americi se dvostruko rje\u0111e vi\u0111aju u svim podru\u010djima u odnosu na 1974. godinu. Oni su specijalizirani za razno\u0161enje peludi i oplodnju mnogih vrsta biljaka, me\u0111u […]<\/p>\n","protected":false},"author":1,"featured_media":169,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21],"tags":[],"yoast_head":"\r\nJedni od najva\u017enijih opra\u0161iva\u010da u prirodi je ugro\u017eeni jer njihov broj drasti\u010dno opada > Udruga \u201cEko OTPOR\u201d<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"http:\/\/www.ekootpor.com\/?p=168\" \/>\r\n<meta property=\"og:locale\" content=\"hr_HR\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"Jedni od najva\u017enijih opra\u0161iva\u010da u prirodi je ugro\u017eeni jer njihov broj drasti\u010dno opada > Udruga \u201cEko OTPOR\u201d\" \/>\r\n<meta property=\"og:description\" content=\"Bumbari, jedni od najva\u017enijih opra\u0161iva\u010da u prirodi, trenutno su ugro\u017eeni jer njihov broj drasti\u010dno opada. 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