Tag: "refuge" at biology news

Insects develop resistance to engineered crops

...nts have an added advantage of requiring a smaller refuge -- a part of the field where non-Bt plants are gro...ting will be susceptible to the toxins. "Having a refuge is a good management strategy, but it is not suitable for small farmers in China and India," said le...

Seafloor creatures destroyed by ice action during ice ages

... the permanent ice cover. There would have been no refuge for shallower living animals further down the continental slope, as huge sediment slides would have buried them. Typically these ecosystems would have been made up of sponges, urchins, sea fan corals, and starfish. Dr Thatje said: 'We show that duri...

Gene therapy may protect normal tissues during radiation retreatment for lung cancer

... the permanent ice cover. There would have been no refuge for shallower living animals further down the continental slope, as huge sediment slides would have buried them. Typically these ecosystems would have been made up of sponges, urchins, sea fan corals, and starfish. Dr Thatje said: 'We show that duri...

Why the Amazon rainforest is so rich in species

...t refuges in the Amazon basin, and the Pleistocene refuge theory is now under question. He said: "Although I do not believe that ice ages had much to do with the rapid evolution of species in the Amazon basin, the difference in numbers of species between the temperate zone and tropical South America can be...

Computers to save unique type of American red squirrel

...tain, restricting hunting and an existing squirrel refuge did not appear to be stemming the population's decline. He said: "It's very important that we preserve the Mount Graham Red Squirrel, which has survived since the last Ice Age. Its decline in recent years is an indication of something changing on the...

Bt cotton in China fails to reap profit after seven years

...nce to the Bt cotton. The pesticides used in these refuge fields help control secondary pest populations on ...s the secondary pests or enforcing the planting of refuge areas where broad-spectrum pesticides are used. ...

Virus has 'catastrophic' affect on red squirrels, research shows

...humane way forward is the strategy of red squirrel refuge areas where control of grey squirrels bringing the... Small, targeted control at local entry points to refuge areas is an accepted management strategy and already works well in controlling populations of specie...

Shrinking ponds signal warmer, dryer Alaska

...on acres in Alaska and make up 81% of the national refuge system. These refuges provide breeding habitat for millions of waterfowl and shorebirds that overwinter in more southerly regions of North America. "No one has done a state water-body inventory of this magnitude," said Brian Riordan, lead author an...

Discovery of new cave millipedes casts light on Arizona cave ecology

...in leaf litter. As the climate warmed, they sought refuge in caves, where the subterranean realm provides more constant climatic conditions enabling their survival. Representing two distinct species (one occurring in one cave on the South Rim, the other in two caves on the North Rim of Grand Canyon), thi...

Climate change was the cause of Neanderthal extinction in the Iberian Peninsula

...ring the last Ice Age, the Iberian Peninsula was a refuge for Neanderthals, who had survived in local pockets during previous Ice Ages, bouncing back to Europe when weather conditions improved. Climate reconstructions The study is based upon climate reconstructions elaborated from marine records and...

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