In some cases, habitat alterations have resulted in the genetic isolation of dolphin populations.

That many of these species are in decline, in a world plagued by drastic habitat alteration, is also hard to argue with.

Aside from the habitat alteration new species were introduced deliberately or accidentally.

Most of the global ocean pollution, overexploitation, and coastal habitat alteration occur within their waters.

Since the 1960s, the primary threat has been habitat alteration, or its outright destruction.

The species is believed to have become extinct as a result of habitat alteration after the Wisconsin glaciation.

These mainly include habitat alteration, industrial pollution and over-fishing, which in turn decreases their prey source.

Threats to this species include habitat alteration, such as changes in the fire regime and the effects of livestock.

By the middle 1800's, excessive hunting and habitat alteration had nearly eliminated the birds in the Northeast.

The depletion of the population is primarily due to the habitat alterations caused by dams.