Survival for migratory land animals is now tied to overcoming man-made obstacles such as roadways and railroads. Increasing road density may be a cause of population declines for Alaska caribou herds ...
OTTAWA, April 9 (Reuters) - Canada's 36,000-strong population of woodland caribou will shrink over the next century and those animals that live in areas heavy in energy production and logging are at ...
Migratory land mammals roam annually over large swaths of landscape to obtain seasonally available resources. For example, caribou (Rangifer tarandus) migrate southward in massive herds to their ...
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