September 30, 2009

Effect of Global worming in natural life

Effect of Global worming in natural life

QUIVER TREE This striking giant aloe was given its name by the San people of southern Africa, who use the tree's hollow branches as quivers for their arrows. Scientists have discovered that quiver trees are starting to die off in parts of their traditional range. The species might be in the early stages of moving southward, trying to escape rising temperatures closer to the equator.

PINON MOUSE This tiny resident of the southwestern U.S. has long eked out its living in juniper woodlands, but in California it is heading for higher, cooler altitudes in the High Sierra conifer forests. The mouse is one of several small mammals in the region that have moved their homes 1,000 to 3,000 ft. higher in elevation over the past century.

RED-BREASTED GOOSE Twenty-six bird species, including this goose, which breeds in the Arctic, are listed by the World Conservation Union as threatened by global warming. Half are seabirds whose food supplies are diminished because of climate changes. The rest are terrestrial species, including several whose coastal habitats are at risk because of rising sea levels.

September 24, 2009

Impact Of Renewable Energy On Our Oceans

 Impact Of Renewable Energy On Our Oceans Must Be Investigated, Say Scientists:

Scientists from the Universities of Exeter and Plymouth are calling for urgent research to understand the impact of renewable energy developments on marine life.
The research highlights the capacity for marine renewable energy devices to boost local biodiversity and benefit the wider marine environment. The study also points out that such devices could have negative environmental impacts, resulting from habitat loss, collision risks, noise and electromagnetic fields.

It highlights the gaps in our understanding of the effects of marine renewable energy devices on the health of our oceans. The team calls for more research to improve our understanding of these threats and opportunities. The researchers also stress the importance of considering the impact on marine life when selecting locations for the installation of marine energy devices.

 Author Dr Brendan Godley of the University of Exeter said:


 "Marine renewable energy is hugely exciting and it is vital that we explore the potential for it to provide a clean and sustainable energy source. However, to date research into the impact of marine renewable energy on sea life has been very limited. . Our study highlights the urgent need for more research into the impacts of marine renewable energy on marine life. This will involve biologists, engineers and policy-makers working together to ensure we really understand the risks and opportunities for marine life."
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