Tuesday, June 19, 2012
Habitats in Danger
Sometimes wetland areas are seen as places where disease carrying insects breed, so they are drained without thought of their importance to the environment as a whole. Forests are felled because of the value of the wood they contain, regardless of the fact that they act as a water holding system, without which rivers may run faster in rainy seasons, causing soil erosion in their upper reaches and problems of silting as the river approaches the sea.
In some areas, even nonessential human demand is regarded as paramount –for example, the breeding beaches of marine turtles in many parts of the world have been sacrificed to holiday homes and hotels, used by a comparatively small number of wealthy visitors. Although experience should show that environmental change often has far reaching effects not foreseen in the early stages of change, mankind seems to be at many instances incapable of learning.