Introduced Species Effect On Biodiversity

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Introduction of exotic species, non-native distribution ranges, either deliberately or by activity accidentally human several once poses a serious threat to the local habitat. Habitat containing all native varieties attempts to balance and control each species living within its boundaries. An introduced species has no enemies control; from which they slowly go out several native species and compete with them for resources.


Threats to biodiversity are numerous as the destruction of habitat by deforestation, liberation of toxic gases due to industrialization, etc. Of all these threats second introduction of exotic ranks. In fact, the native biodiversity is affected more by species introduced, rather than by pollution, harvest and disease combined.


Some of these species are also used as biological weapons they cause massive destruction of the ecosystem.


Examples of damage to biodiversity


Species are habitat-specific and can flourish only in a particular habitat, but introduced species change of habitat and cause a serious threat to biodiversity.

Australian Melaleuca tree has been introduced which replaced native plants, such as the saw-grass, on a wide range of approximately 400,000 acres of South Florida. Australian Melaleuca tree was a combination of characters as flammable leaves, spongy outer bark and litter which can increase fire frequency and intensity. The uncontrolled spread of Melaleuca made many birds and mammals extinct as they have been adapted to the native plant community.

Other invasive species, not a habitat change, but pose a threat to a single species. Sometimes they even destroy whole groups of them in various ways.

Tree Brown-Snake, is a predator which was introduced in the Admiralty Islands in cargo. The brown tree snake has affected the forests of Guam by eliminating the ten of the eleven species of native birds.

A few times, the impact of the invaders is subtle but destroyed native species at the same time.

The North American native red squirrels are hunted to extinction by the grey squirrel. These species compete nuts and Gray Squirrel are more effective than native species. Such competition for resources is difficult to observe, but the loss of a native species is the final result.

An interesting example of the plants is that of acacia and eucalyptus. These species were brought to the Australia in afforestation programmes. These are quick to plant growth and were encouraged because the demand for wood has also increased. But these plants are known for their many disadvantages such as:

These trees in the shadow of the soil and the falling leaves do not other plants to grow.These trees are not easilyDuring the rain is heavy erosion and poor percolation in areas rich in these trees.

Only some introduced species are beneficial. Like most of our food crops (rice), onion, peppers and animals for company. Injurious species statistics are surprising. The solution to this problem is strict rules at all points of entry and exit as airports, ports, etc. border crossing areas in quarantine.


These proactive measures to verify this problem will enable the plants and animals to thrive in their natural environment and existing habitat.


Anna Purna is written freelance articles on his favourite interest, health, and Nutrition. It also works on jobs at home. Before that, she worked full time for about 2 and a half years in the annotation of biological databases in various organizations. She holds a Post graduate in biochemistry degree and a diploma of PG in Bio-informatics.