By 1989 over 92 percent of the Laguna's historic riparian habitat had been lost, and its water quality had reached critically poor levels.

The knowledge gained may be important in other areas where seabirds have lost their historic habitats, Dr. Kress said.

"We've determined that the beetle survives in more of its historic habitat on the western periphery," he said.

In 1936, bison were transplanted to historic habitats in the Firehole River and Hayden Valley.

The D.E.P. had devised a plan to reclaim historic habitat for migratory fish and worked with Northeast Generation officials to help make it happen.

The Virgin spinedace has completely disappeared from 37% of postulated historic habitat in the Virgin River.

With a great capacity of adaptation, find more favorable conditions for development and a more similar habitat to their historic European habitat.

This snail has disappeared from all portions of its historic habitats that have been impounded by dams.

Recent reports indicate a strong association between the disappearance of R. muscosa from its historic aquatic habitats in California and wind-borne pesticides from agricultural land.

Endangered riparian brush rabbits have been reintroduced to their historic habitat from captive-reared populations.