Blar i USN Open Archive på forfatter "Halley, Duncan J."
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Current distribution, status and patterns of spread of the Eurasian beaver Castor fiber, and the implications for management
Halley, Duncan J.; Rosell, Frank (Conference report, 2000)Reduced to 1200 animals in 8 small refugia by the end of the 19th century, natural spread and reintroductions have led to a powerful recovery in Eurasian beaver (Castor fiber L. 1758) range and populations. The minimum ... -
Population and distribution of European beavers (Castor fiber)
Halley, Duncan J.; Rosell, Frank (Journal article; Peer reviewed, 2003)After being reduced to about 1,200 animals in eight isolated populations by the beginning of the 20th century, European beavers (Castor fiber) have powerfully recovered in both range and population, through relaxation of ...