Chris Cantell Discusses Science: Rana proletna pesna! Kako globalnoto zatopluvanje vlijaee na rastenijata i ivotinskoto carstvo?

by Zivka Deleva

Pominaa samo nekolku dena otkako depresivnite amerikanci se molea za proletta. Posle beskonenite meseci na zimski buri i period so niski temperaturi, nepredvidlivata vremenska prognoza se ini deka stignavme do nekoja toka na presvrt. Prvoto proletno vetre niz SAD donese olesnuvanje od pekolnoto ladno kaj site.Podobro da ne ja peeme prearano pesnata za proletta, bi rekol nekoj. Masivnoto zatopluvanje, go zabrzuva cvetanjeto na cvekinjata, to posledovatelno nosi golem haos vo ivotinskoto carstvo. Statistikata procenuva deka efektot na zeleneenje doaga 8 asa porano sekoj den. Pred 25 godini moevme da sonuvame za Vaingtonskata aleja so crei rascvetana so razletanite peperutki na sredinata od mart.I pokraj toa to odueveni lugeto uivaat vo vremeto, izleguvanjeto vo priroda za vreme na vikendot, gi povikuva itno alergolozite! Oigledno i alergiskite kivanja se zaproletelile. Razgleduvajki go vremeto vo poslednite dekadi, moe da zabeleime deka sekoja godina doaga na razlien nain. Uasnata zima vo 2005 godina se pretvori vo ektremno meko vreme so Januarski cvekinja vo Centralna Evropa 2006 godina i koneno zimata vo 2007 godina koja se inee deka gi srui site zamarnuvaki rekordi. Nestabilnosta seriozno gi voznemiruva biolokite saati na mnogu vidovi ivotni.Dodeka rastenijata koi rastat i cvetniot polenov prav obezbeduvaat hrana za golema grupa na insekti, toa pak go obezbeduva vaniot lanec na ishrana za mnogu od pticite i drugi cicai. Ranata prolet gi provocira drvjata da cvetaat rano, dodeka insektite se ute hiberniraat. Zatoa to polenot se zadruva samo nekolku saati preku den, vremeto koe e pogreno presmetano priinuva insektite da izgladnuvaat. Na primer, pelite sobiraat polen od razlini cvekinja, to na kraj go menuva kvalitetot na medot. Ajde da izbroime so periodinite zakani od zamrznuvanje. Oplodenite pupki umiraat, se namaluva dobivkata na farmerite, insektite prestanuvaat da letaat i pticite gladuvaat.Dodeka pristignat ivotnite cvekinjata moe da bidat zavreni za tekovnata godina. Celiot lanec na ishrana e uniten. ivotnite moebi ke treba da najdat nov izvor na hrana. Se do ovoj den, reenieto e pokomleksno i poteko od bilo koga porano. Duri i da moevme da go namalime jagleniot dvooksid, koj gi zgolemuva temperaturite i go poddruva efektot na zelena kuka, nikoj ne moe da ne ubedi deka distribucijata ke prestane.Da isplivame na povrina, nema somnei deka vistinskoto tajmiranje e se.

related story: http://news.yahoo.com/s/ap/20080319/ap_on_sc/warming_spring;_ylt=Ao009wOaBNwWY.PrT2Ktg3as0NUE

by Zivka Deleva for PocketNews (http://pocketnews.tv)

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Edited by: Maria Zitnanska