Threats To The Ecosystem
Due to increases in human population, there are many threats to the ecosystems of the Sierra Tarahumara Occidental region. The government funding to build a “tourist friendly” atmosphere poses threats to the environment and indigenous cultures. Roads have been built in the former isolated mountainous zones. Agriculture and grazing as well as the cutting of hardwoods and other trees for firewood has accelerated a soil erosion problem. Mesquite (Prosopis spp.) and Desert Ironwood (Olneya tesota) trees are cut and exported primarily to the U.S. for charcoal. Amapa (Tabebuia chrysantha) trees yield highly prized lumber for building and furniture making. Other trees are also cut and sold for their high-priced lumber. Over harvesting of the forests in the area has caused the extinction of the Imperial Woodpecker and Mexican Wolf. Approximately, 2 percent of the original old-growth forest remains. However, a massive forest-harvesting project in the region has been abandoned, for now, by the World Bank. The Mexican forestry department deemed these species of trees “legally protected,” but enforcement is difficult.
The government has taken measures to halt or slow down the cultivation of opium poppies and cannabis by spraying crops with herbicides, which threaten the populations of many different species. A large saturnid moth, Rothschildia cincta, are one of the species that are threatened by the spraying. Their cocoons are used by the Indian population for ceremonial purposes.
Open-pit mining for copper, gold and other metals not only produces air pollution from smelters, but has been linked to the serious decline of the Tarahumara Frog (Rana tarahumarae). Every river system has been dammed causing fresh water shortages in nearby desert communities. An enormous dam is being constructed on the Rio Fuerte, which poses major environmental problems and may lead to massive losses of tropical forest and habitats.
Conservation is underway, but remains informal and slow. Mexico has environmental laws, but suffers from lack of financial resources. Enforcement has been lax or non-existent. Agencies are actively trying to increase the protection for natural preserves.
Read more about this topic: Copper Canyon
Famous quotes containing the words threats to and/or threats:
“Among the best traitors Ireland has ever had, Mother Church ranks at the very top, a massive obstacle in the path to equality and freedom. She has been a force for conservatism, not on the basis of preserving Catholic doctrine or preventing the corruption of her children, but simply to ward off threats to her own security and influence.”
—Bernadette Devlin (b. 1947)
“Among the best traitors Ireland has ever had, Mother Church ranks at the very top, a massive obstacle in the path to equality and freedom. She has been a force for conservatism, not on the basis of preserving Catholic doctrine or preventing the corruption of her children, but simply to ward off threats to her own security and influence.”
—Bernadette Devlin (b. 1947)