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
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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...
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11 June 2012
Bats, facts and fiction
In ancient Rome, bats were nailed to the door of the house as a protection from witches...
8 March 2021
8 March. We remember Rosalind Franklin, the great female DNA scientist.
DNA was first isolated by Friedrich Miescher, a Swiss biochemist in 1869. It was a brilliant, but not complicated operation:…
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27 February 2021
In search of the riders of icebergs
International Polar Bear Day, set up by Polar Bears International, a non-profit organisation, was held on 27 February. The aim…
8 January 2021
Smart as a crow
Some people call them "monkeys with feathers" because they can do clever things comparable to many of our monkey cousins.…
18 December 2020
The Christmas Star Tradition
Let's discover together stories and legends about the Christmas Star...
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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...
-
11 June 2012
Bats, facts and fiction
In ancient Rome, bats were nailed to the door of the house as a protection from witches...
8 March 2021
8 March. We remember Rosalind Franklin, the great female DNA scientist.
DNA was first isolated by Friedrich Miescher, a Swiss biochemist in 1869. It was a brilliant, but not complicated operation:…
-
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...
From the Multimedia section
Facts
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3 April 2012
The whale shark
<p>The whale shark <i>(Rhincodon typus</i>) is the biggest fish in the world...</p>
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3 April 2012
The whale shark
<p>The whale shark <i>(Rhincodon typus</i>) is the biggest fish in the world...</p>