La sicurezza degli approvvigionamenti alimentari mondiali è duramente messa alla prova dai cambiamenti climatici in atto. Le vecchie piante non sono infatti abituate a temperature così torride e la mancanza di acqua, con l’avanzare della desertificazione, non fa che rendere ancora più arida la terra coltivabile. Motivo per il quale gli scienziati si stanno adoperando al fine di trovare piante più resistenti al riscaldamento terrestre e meno sensibili all’alta quantità di CO2 immessa nell’atmosfera dalle attività umane e non.
Un nuovo clima esige nuove colture. Continuare ad ignorare il problema potrebbe risultare pericolosamente deleterio, dal momento che gli studiosi hanno scoperto che le piante cresciute in ambienti aridi e/o inquinati, con alti tassi di CO2, avrebbero meno principi nutritivi rispetto alle altre e valori elevati di sostanze tossiche per l’organismo. Un recente studio, effettuato da un team di ricercatori della Monash University di Victoria (Australia), ha infatti individuato un incremento di composti tossici e una diminuzione del contenuto proteico nelle piante coltivate in territori con alto tasso di inquinamento. Gli studiosi hanno inoltre notato che la resa delle coltivazioni in condizioni di siccità e in aree fortemente interessate dai cambiamenti climatici era nettamente inferiore a quella ottenuta in condizioni normali.
La ricerca, presentata dal dottor Gleadow Ros nel corso del Society for Experimental Biology Annual Meeting svoltosi a Glasgow il 29 giugno scorso, ha dimostrato che la concentrazione di alcune sostanze tossiche responsabili del rilascio di cianuro di idrogeno, è aumentata nelle piante coltivate in corrispondenza di elevate quantità di CO2. Questo dato è stato aggravato dal fatto che il contenuto proteico è diminuito, rendendo le piante più tossiche, dal momento che la capacità degli erbivori di abbattere i livelli di cianuro dipende in gran parte dall’ingestione di una quantità sufficiente di proteine.
I dati hanno inoltre dimostrato che la manioca, un alimento base delle colture nelle regioni tropicali e subtropicali, data la sua tolleranza delle condizioni aride, è soggetta a riduzioni di resa in presenza di alti tassi di CO2. Secondo gli esperti se i livelli di CO2 continueranno ad aumentare:
Abbiamo bisogno di prepararci per la prevista riduzione del valore nutrizionale di molte piante, fenomeno che sconvolgerà gli equilibri di sussistenza di intere popolazioni, già oggi in gravi difficoltà a causa della penuria di cibo.
[Fonte: Society for Experimental Biology (2009, June 30). New Crops Needed For New Climate. ScienceDaily. Retrieved July 1, 2009, from http://www.sciencedaily.com /releases/2009/06/090629081127.htm]
Possedere il clima entro il 2020 documento della NASA il clima lo possiedono gia’ cosi’ si potranno fare entrare su larga scala gli ogm , che non risolveranno la fame nel mondo , anzi toglieranno la salute e la vita a molte persone , ma il problema e’ risolto siamo troppi in questo mondo , bisogna escogitare qualcosa
quindi far credere che e’ per il nostro bene , che c’e’ chi pensa a noi , e come ci pensa !
I just want to tell you that I’m beginner to weblog and absolutely liked you’re web page. Probably I’m likely to bookmark your blog . You really come with awesome article content. With thanks for sharing your web site.
The new Zune browser is surprisingly good, but not as good as the iPod’s. It works well, but isn’t as fast as Safari, and has a clunkier interface. If you occasionally plan on using the web browser that’s not an issue, but if you’re planning to browse the web alot from your PMP then the iPod’s larger screen and better browser may be important.
excellent submit, very informative. I wonder why the other specialists of this sector do not notice this. You should proceed your writing. I am sure, you have a huge readers’ base already!
Wow, amazing blog layout! How long have you ever been running a blog for? you make blogging glance easy. The overall look of your website is wonderful, as well as the content!
Hello there, just became aware of your blog through Google, and found that it’s truly informative. I’m gonna watch out for brussels. I will be grateful if you continue this in future. A lot of people will be benefited from your writing. Cheers!
very nice blog!
http://wirosableng.edan
Incredibly helpful elements you’ll have mentioned, say thanks a lot for putting up.
http://www.shortmyurls.com/emeryeps-maui-seo-comment
I really enjoy reading on this web site, it has fantastic posts. “Beware lest in your anxiety to avoid war you obtain a master.” by Demosthenes.
I like the helpful information you provide in your articles. I’ll bookmark your weblog and check again here frequently. I am quite certain I will learn many new stuff right here! Good luck for the next!
I love the efforts you have put in this, thank you for all the great content.
Some truly wonderful blog posts on this site, thanks for contribution.
Thanks for another wonderful post. Where else may just anybody get that type of information in such a perfect manner of writing? I have a presentation subsequent week, and I am on the search for such info.
IMSC SEO is a Singapore SEO Company. They provide comprehensive Singapore SEO services to help SG businesses to gain traffic from search engine. Their SEO agency has many years of experiences working with overseas companies on more competitive grounds. They are the best seo company in Singapore you can find. Their SEO expert and consultant understand exactly what search engine optimization your company need to gain search engine traffic.
http://www.shortmyurls.com/imsc-home-comment-general
Divorcemind.com is a online divorce resource for divorce attorney, attornies and lawyers. You will find the best divorce information online. Divorce Mind will make your divorce or separation a quick, convenient and private.
http://www.shortmyurls.com/divorcemind-divorces
Divorcemind.com is a online divorce resource for divorce attorney, attornies and lawyers. You will find the best divorce information online. Divorce Mind will make your divorce or separation a quick, convenient and private.
http://www.shortmyurls.com/divorcemind-divorces-comment
cheers for such a brilliant website. Where else could someone get that kind of information written in such a perfect way? I have a presentation that I am presently working on, and I have been on the watch out for such information.
http://repairloader.net/
Great write-up, I’m normal visitor of one’s web site, maintain up the nice operate, and It is going to be a regular visitor for a lengthy time.
Great – I should definitely pronounce, impressed with your site. I had no trouble navigating through all tabs as well as related information ended up being truly easy to do to access. I recently found what I hoped for before you know it at all. Reasonably unusual. Is likely to appreciate it for those who add forums or something, website theme . a tones way for your customer to communicate. Nice task.
Divorcemind.com is a online divorce resource for divorce attorney, attornies and lawyers. You will find the best divorce information online. Divorce Mind will make your divorce or separation a quick, convenient and private.
http://www.shortmyurls.com/divorcemind-divorce-attorney-comment-gen
SacramentoCremation.us is one of the leading crematorium services in the Sacramento area. Feel free to contact us regarding any questions on Sacramento Cremation Services or concerns you might have. Our staff will respond to you as soon as possible.
http://www.shortmyurls.com/sacramentocremation-services-comment-gen
IMSC SEO is a Singapore SEO Company. They provide comprehensive Singapore SEO services to help SG businesses to gain traffic from search engine. Their SEO agency has many years of experiences working with overseas companies on more competitive grounds. They are the best seo company in Singapore you can find. Their SEO expert and consultant understand exactly what search engine optimization your company need to gain search engine traffic.
http://www.shortmyurls.com/imsc-services-comment-exact
The Zune concentrates on being a Portable Media Player. Not a web browser. Not a game machine. Maybe in the future it’ll do even better in those areas, but for now it’s a fantastic way to organize and listen to your music and videos, and is without peer in that regard. The iPod’s strengths are its web browsing and apps. If those sound more compelling, perhaps it is your best choice.
IMSC SEO is a Singapore SEO Company. They provide comprehensive Singapore SEO services to help SG businesses to gain traffic from search engine. Their SEO agency has many years of experiences working with overseas companies on more competitive grounds. They are the best seo company in Singapore you can find. Their SEO expert and consultant understand exactly what search engine optimization your company need to gain search engine traffic.
http://www.shortmyurls.com/imsc-home-comment-general
It is truly a nice and helpful piece of info. I¡¦m glad that you shared this helpful info with us. Please stay us informed like this. Thanks for sharing.
The new Zune browser is surprisingly good, but not as good as the iPod’s. It works well, but isn’t as fast as Safari, and has a clunkier interface. If you occasionally plan on using the web browser that’s not an issue, but if you’re planning to browse the web alot from your PMP then the iPod’s larger screen and better browser may be important.
Great write-up, I am regular visitor of one¡¦s blog, maintain up the nice operate, and It is going to be a regular visitor for a long time.
Very nice post. I just stumbled upon your blog and wished to say that I have really enjoyed surfing around your blog posts. After all I will be subscribing to your rss feed and I hope you write again soon!
I like the valuable information you provide in your articles. I’ll bookmark your weblog and check again here regularly. I am quite certain I’ll learn many new stuff right here! Good luck for the next!
Hello there, You have done a great job. I’ll certainly digg it and personally suggest to my friends. I am confident they will be benefited from this website.
I am very happy to read this. This is the type of manual that needs to be given and not the random misinformation that’s at the other blogs. Appreciate your sharing this greatest doc.
Wow, amazing weblog structure! How long have you been blogging for? you made blogging glance easy. The full look of your website is wonderful, let alone the content!
I get pleasure from, lead to I discovered exactly what I was looking for. You’ve ended my 4 day lengthy hunt! God Bless you man. Have a nice day. Bye
Hi there, I found your website by way of Google whilst looking for a comparable matter, your site came up, it looks great. I have bookmarked it in my google bookmarks.
Just desire to say your article is as surprising. The clarity in your post is simply cool and i could assume you are an expert on this subject. Fine with your permission let me to grab your feed to keep updated with forthcoming post. Thanks a million and please keep up the rewarding work.
hi!,I love your writing very so much! percentage we keep up a correspondence more about your article on AOL? I need an expert on this space to unravel my problem. May be that’s you! Having a look forward to see you.
Wow, superb weblog format! How lengthy have you been blogging for? you make running a blog look easy. The full look of your site is great, as smartly as the content material!
As I site possessor I believe the content material here is rattling great , appreciate it for your hard work. You should keep it up forever! Best of luck.
I have read several just right stuff here. Certainly worth bookmarking for revisiting. I surprise how a lot effort you place to make this sort of wonderful informative web site.
http://www.aacl.info/