DEFORISTATION:
Deforestation is the clearing of trees, transforming a forest into cleared land. release of carbon from the machinery and the vegetation. It is believed that deforestation may be an addition to the effects of global warming and transform the rainforest climate. The massive deforestation of the forest has caused the total land mass to go from 15 million km squared to about 8 million km squared, this is nearly half; it is estimated thaa nearly 2% of the rainforest is lost annually. Furthermore, Approximately 137 species are lost in this biome per day, including both species of plants and animals and insects. Human Activity in the Rainforest Biome has allowed for the discovery of many different medicines, nearly 120 prescription medications today are derived from plants in the tropical rainforest, nearly ⅔ of these drugs are known to have cancer fighting properties, not only are the drugs used to combat cancer, they are used in fighting malaria, heart disease, hypertension, bronchitis, diabetes and arthritis. the negative side of human activity: Overexploitation: Human activity and development in the tropical rainforest has lead to massive amounts of forest land being converted into other human uses such as mining or agriculture. Overexploitation of the rain forests Natural resource is a highly damaging impact that humans have on the rainforest, massive amounts of trees are cut down in the rainforest which are used for the timber industry, this cutting down of the trees causes a massive drop in the habitat of the forest’s organisms and the machinery used to complete this process provide a massive source of pollution and habitat destruction. |
Primary productivity is the rate at which photosynthesis occurs. This determines the rate at which biomass increases within an ecosystem. There are two types of primary productivity, net primary productivity and gross primary productivity.
Net primary productivity: the rate at which producers use photosynthesis to produce and store chemical energy minus the rate at which they use some of this for their own respiration. Gross primary productivity: is the rate at which the primary producers in an ecosystem convert suns energy into chemical energy in the form of biomass found in their tissues. |