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. Refer to “Alteration and loss of the habitats”.
  • 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

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    31 August 2013

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    Biodiversity in Italy Italy has a rich biodiversity due to its distinctive geographic, climatic and historical characteristics. In particular, there…

  • 10 February 2014

    Coral turns pale!

    The delicate balance of the coral reef “When looking at a coral reef, we are fascinated by the enormous variety…

    5 February 2007

    Biological products

    Sustainable agriculture Biological products are foodstuffs of vegetable and animal origin (apples, peaches, strawberries, tomatoes, pasta, bread, cheese, salami and…

  • 3 November 2006

    GMO

    Genetically modified organisms Two months ago some lots of rice reached Europe from the United States by sea, and were…

    5 January 2005

    Tsunami in the Maldives

    The tsunami On the 26th December 2004, an earthquake that took place 300 km west of the Island of Sumatra…

  • 15 March 2008

    Biodiversity

    Defining biodiversity Much is said about biodiversity and of the need to protect it. But what is biodiversity? And why…

  • 31 August 2013

    The Red List of Italian animals

    Biodiversity in Italy Italy has a rich biodiversity due to its distinctive geographic, climatic and historical characteristics. In particular, there…

  • 10 February 2014

    Coral turns pale!

    The delicate balance of the coral reef “When looking at a coral reef, we are fascinated by the enormous variety…

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