Biodiversity & the effect of human interaction on ecosystems - EdexcelDeforestation
Biodiversity is a measure of how many different species live in an ecosystem. Human activities like changing land use, deforestation and peat bog destruction reduce this.
For thousands of years humans have been deforesting small areas of woodland to build their own houses or grow crops to feed their families. However, in recent years the increase in the human populationAll of the members of a single species that live within a geographical area. and development of industrial machinery has meant that much larger areas have been cleared. This is often by large companies who deforest to provide land for cattle, rice fields and growing crops for biofuelA type of energy source derived from renewable plant and animal materials, eg ethanol (often made from corn in the United States and sugarcane in Brazil), biodiesel (vegetable oils and liquid animal fats) and biogas (methane from animal manure)..
Deforestation destroys the habitatA place where plants, animals and microorganisms live. of the organisms that live there and through this kills individuals of many speciesA type of organism that is the basic unit of classification. Individuals of different species are not able to interbreed successfully.. Scientists estimate that several hundred species of plant, animal and insect are lost each day partly as a result of deforestation. This means that deforestation is causing extinctions and dramatically reducing biodiversity.
It is estimated that nearly twenty percent of the Amazon rainforest has been cut down in the last fifty years, and the rate of this deforestation has increased in recent years.