- America's Most Dangerous Aliens
From the Great Lakes to the Gulf Coast, these invasive species are crowding out the natives, chowing down on houses and ruining the fishing. ガルフコースト五大湖からは、これらの外来種は、原住民から混雑、住宅の下チョーイングや釣りを台無しにされます
- Ethical investment: Flower power | Editorial
It is good to learn that Kenya's rose-growing industry has been transformed since we reported on its damaging impactIn a world of many bad news stories, it is good to learn that Kenya's rose-growing industry, worth $500m a year, has been transformed since we reported, in 2003, on its damaging impact on the people and environment of the shores of Lake Naivasha. Better, safer working conditions and a dramatic new emphasis on sustainability are the upshot of a mix of public criticism and a devastating drought followed by floods that left no alternative but a radical rethink about the way the growers and their workforce used water. Backed by huge charitable organisations like the Rockefeller and the Bill and Melinda Gates foundations, there is an upsurge of interest in this kind of impact investment, where developed-world capital seeks projects in Africa, Asia and South America which can generate commercial returns from sustainable development. Wealthy individuals prefer social enterprise to charity; ethical fund managers look for vehicles that do good at the same time as doing well.The dilemma is how to judge at what point the costs outweigh the benefits. The current controversy over another Kenyan project, to grow the poisonous and invasive South American plant jatropha for biofuel, shows just how difficult it is to strike a balance. The project's critics protest at damage to the Dakatcha woodland, an important habitat, warn against the extensive planting of an exotic species, and argue that jatropha will produce more carbon than it saves. Its supporters promise jobs and investment in an arid, poverty-stricken part of Kenya. In the wake of land grabs by China, Asia and the Middle East seeking food security for their own people, there is widespread suspicion of an agribusi 私たちは、その有害impactIn上の多くの悪いニュースの世界を報告して以来、ケニアのバラの成長産業は、変換されていることを学ぶために良いですが、それ以来、変換されており、ケニアのは年間$ 500ミリアンペア価値は、成長産業を上がったことを学ぶために良いです我々は人々や湖ナイバシャの海岸の環境への有害な影響について、2003年に報告した
- In praise of … camels down under | Editorial
Australia's population of wild camels may soon be shot in order to earn carbon credits in an emissions trading schemeIt's enough to make an even-toed ungulate weep. Australia's population of wild camels, the Financial Times reveals, may soon be shot in order to earn carbon credits under the country's forthcoming emissions trading scheme. Each one of the creatures is estimated to produce a tonne of carbon dioxide a year – about the same as a 7,000km flight – not to mention the environmental havoc they cause in a fragile desert landscape more suited to amiable marsupials. Outback Australia, argue the promoters of the scheme, is being terrorised by up to a million feral camels, the unwanted descendants of beasts brought to the country a century ago to carry loads in the desert, and let loose once trucks took over their role. These unloved burping, grunting ships of the desert now face mass slaughter as a token of Australia's slow-off-the-mark battle against climate change. By some measures, Australians are the biggest per capita emitter of carbon dioxide on the planet, ahead of even the United States. Yet some might think it odd that camels are being singled out, when that other invasive species, the human, is really the cause of the problem, and ask whether climate change is more an excuse than a justification for the cull. The country certainly has too many camels, and animal rights campaigners may be oveoptimistic when they suggest feeding the animals birth-control tablets. But the camels didn't ask to be sent to Australia in the first place. They are just doing what camels naturally do.AustraliaAnimalsguardian.co.uk © Guardian News & Media Limited 2011 | Use of this content is subject to our Terms & Conditions | More Feeds
野生ラクダのオーストラリアの人口はすぐに注文もチュウヒ泣く有蹄類にする排出量取引schemeItのに十分なの炭素クレジットを得るために撮影することができる
- New to Nature No 20: Selitrichodes globulus
The curse of the Eucalyptus globulusA new species of gall-inducing wasp, Selitrichodes globulus, has been discovered in Los Angeles County, California, attacking Eucalyptus globulus, among the most widely grown eucalypt in the world. Introduced into California in the mid-1800s, the tree has spread widely, earning it a place on the state's list of exotic plant pests. The extent to which the newly named wasp might help in biological control is yet to be established. Scientists are almost certain that the wasp is an invasive species introduced from its native Australia, although it has not yet been seen there. As human commerce increases, so too do incidents of introductions of foreign species. Quentin Wheeler is director of the International Institute for Species Exploration, Arizona State UniversityZoologyWildlifeAnimalsguardian.co.uk © Guardian News & Media Limited 2010 | Use of this content is subject to our Terms & Conditions | More Feeds
胆嚢はスズメバチをSelitrichodesグロブラス、誘導のユーカリglobulusA新種の呪いが世界で最も広く栽培ユーカリの間で、ユーカリグロブラスを攻撃して、ロサンゼルス、カリフォルニア州で発見されています
- Guardian Daily podcast: More sellers than buyers, say estate agents; and how an insect may help fight Japanese knotweed
The Royal Institution of Chartered Surveyors has reported an easing in the shortage of homes for sale. Dan Roberts, our head of business, looks at the state of the housing market.Wildlife minister Huw Irranca-Davies explains why he's given the green light to the introduction into the UK of a foreign species of insect. It's to aid the fight against Japanese knotweed, which damages buildings, roads, railways, drains and the countryside.After the Russian exile Alexander Litvinenko was murdered in London in 2006, members of his family fled Russia for Italy's Adriatic coast. But they're not finding life any easier there, as Luke Harding reports from Senigallia, south of Rimini.Jon DennisPhil MaynardTim Maby
王立公認測量士の売却のための住宅の不足の緩和が報告されました
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