The main cause of the loss of biodiversity can be attributed to the influence of human beings on the world’s ecosystem.
The threats to biodiversity can be summarized in the following main points:
- Alteration and loss of the habitats: the
transformation of the natural areas determines not only the loss of the
vegetable species, but also a decrease in the animal species associated
- Introduction of exotic species and genetically modified organisms: species
originating from a particular area, introduced into new natural
environments can lead to different forms of imbalance in the ecological
equilibrium. Refer to, “Introduction of exotic species and genetically
- Pollution: human activity influences the natural
environment producing negative, direct or indirect, effects that alter
the flow of energy, the chemical and physical constitution of the
environment and abundance of the species;
- Climate change: for example, heating of the Earth’s
surface affects biodiversity because it endangers all the species that
adapted to the cold due to the latitude (the Polar species) or the
altitude (mountain species).
- Overexploitation of resources: when the activities
connected with capturing and harvesting (hunting, fishing, farming) a
renewable natural resource in a particular area is excessively intense,
the resource itself may become exhausted, as for example, is the case of
sardines, herrings, cod, tuna and many other species that man captures
without leaving enough time for the organisms to reproduce.