Causes of Extinctions and Biodiversity Loss (part 1)
The growing impact of human activities on nature is causing a rapid loss of biodiversity. The main cause is the destruction of ecosystems of great interest, when put into cultivation land clearing forests or draining wetlands when conditions change water or air pollution or where habitats are destroyed in extracting resources.
Besides hunting, the introduction of alien species and other actions have caused the extinction of a number of species.
Human activities which are causing species extinction and a further loss of biodiversity are:
Alteration and destruction of ecosystems .- The destruction of the rainforest is the greatest threat to biodiversity and species richness that is huge. Other very delicate ecosystems and diversity are the coral reefs and in recent years are having serious problems with difficult solutions. They are also considerably damaged wetlands, marshes, etc..
They are places of high biological productivity, used by waterfowl for breeding and feeding and rest on their migrations. For centuries man has drained the swamps to turn them into farmland and coastal wetlands has been used to build ports and cities, so its size has declined dramatically worldwide.
Farming practices – Some modern agricultural practices can be very dangerous for the maintenance of diversity if you are not careful to minimize their impact.
Agriculture and cause an enormous impact on various ecosystems require converting cropland. Besides pesticides, misused can poison many bodies than those who are pests, and introduce a uniform monocultures so great in large areas that greatly reduce the diversity.