Causes of the loss of biodiversity

The main cause of the loss of biodiversity can be attributed to the influence of human beings on the world’s ecosystem, In fact human beings have deeply altered the environment, and have modified the territory, exploiting the species directly, for example by fishing and hunting, changing the biogeochemical cycles and transferring species from one area to another of the Planet. 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 to them.
  • 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 modified organisms”.
  • 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.

Special reports

  • 31 August 2013

    The Red List of Italian animals

    Italy has a rich biodiversity due to its distinctive geographic...

    10 February 2014

    Coral turns pale!

    The coral reef is one of the ecosystems with the richest biodiversity...

    29 April 2013

    Intruders in the Mediterranean

    The Mediterranean Sea has always been considered of fundamental importance...

  • 8 July 2011

    Who’s coming to dinner

    Summer is finally here! As usual...

    11 June 2012

    Bats, facts and fiction

    In ancient Rome, bats were nailed to the door of the house as a protection from witches...

    18 December 2020

    The Christmas Star Tradition

    Let's discover together stories and legends about the Christmas Star...

  • 24 November 2020

    The glow of duck-billed platypuses

    It's easy to answer "which is the strangest animal?". The answer: the platypus. These strange creatures live only in Australia…

    12 October 2020

    Crispr-Cas9, the gene factory

    Nobel 2020. The biochemists Emmanuelle Charpentier, French, and Jennifer A. Doudna, from the United States, were awarded the most important…

    10 May 2020

    A virus’s life

    What are viruses Virus is a Latin word meaning poison. Viruses do not eat, breathe, move or reproduce on their…

From the Multimedia section

Facts