Urban wildlife may not use green corridors.
Canals are assumed to help species to travel around the landscape.
Green corridors do little to aid wildlife, say UK ecologists. Their discovery that isolated wild ground contains just as many plant species as do patches linked by continuous greenery casts doubt on current conservation priorities.
"The proportion of organisms that use [wildlife corridors] is exceedingly small," says botanist Mark Hill of the Centre for Ecology and Hydrology in Monks Wood. Only vertebrates seem to benefit, he says.
JOHN WHITFIELD | © Nature News Service
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