GEOG 106 Lecture Notes - Lecture 8: Acer Platanoides, Acer Nigrum, Acer Saccharum
Document Summary
The ecosystem get reduced significantly to make room for human development and expansion. Major highways (eg. 401), housing and other human creations have fragmented the ecosystem: the niagara escarpment. Some of the oldest ecosystems remain intact while others are destroyed and replaced. Substitution of elements: eg) sugar maple, black maple replaced to norway maple because it can tolerate the urban stress, simplification: an extreme form of substitution in which the process leads to loss of diversity. Species that are no longer around due to human impact. Because of hunting, logging, or destruction of habitat. Pollution produced by human activity has destroyed or weakened the ecosystems. Threats to drinking water, wildlife population, and human health. Distribution of food is unequal because poor countries can"t pay. There may not be enough natural resources on the earth that is available. The affect of agriculture: lithosphere, enhance wind/ water erosion, reduce soil fertility.
