Project Amazonia: Threats - Agriculture and Cattle Ranching - 0 views
-
Kajsa Oltorp on 24 May 12Cattle For reasons similar to agriculture, ranching is not very adaptable to the land of the Amazon Rainforest. The grasses required to feed cattle, like the crops maintained in agriculture, are not resistant to the natural forces of the Amazon Basin and quickly deplete the nutrients of the surrounding soil. The nutrients that were once in the soil are removed from the ecosystem, shipped away as ground beef. Studies on land use have also suggested that the continuous movement of cattle on the unprotected land results in soil compacting, which increases the density of the soil material, resulting in decreased root penetration, water infiltration, and gas exchange.3 This means that larger flora, requiring a more extensive root system, are unable to grow under the compacted soil conditions, leaving the land for grass and woody shrub encroachment. The possible solutions to preventing nutrient loss are similar to those suggested for agricultural systems. Cattle ranching remains a very important industry in Brazil and is becoming even more vital to the Brazilian economy. The Brazilian commercial cattle herd is the largest in the world.4 Beef and milk are the two top livestock products in Brazil5 and exports of Brazilian beef grew to $1 billion (USD) in 2001. By 2003, Brazilian beef output is expected to reach 7.4 million tons, with exports of 925,000 tons. One problem in Brazilian beef exporting has been the existence of foot and mouth disease in some Brazilian states. This has caused the United States to be very stringent with Brazilian beef imports. However, the United States and Europe are still major importers of Brazilian beef.6 For every 1/4 lb hamburger consumed in the US from rainforest beef, about 55 square feet of rainforest was cleared. Although many fast food chains claim not to use rainforest beef, this claim is simply not valid. The USDA doesn't have an adequate system of labeling where beef is from. Thus beef grown in the rainforest can pass th