Introduced Species

Introduced Species

Definition

• Introduced species are organisms that have been intentionally or unintentionally transported by humans to a new geographical location where they are not naturally found.

Naturalisation

• Some introduced species become established in their new environment and are referred to as naturalised species.

Purposeful Introduction

• Some introduced species are intentionally brought to a new location by humans. These are termed non-native species.

Naturalisation and Spread

• Naturalised species can spread and become invasive species, which means they proliferate rapidly and can outcompete or prey on native species.
• Invasive species often have no natural predators, parasites, or competitors in their new environment, allowing them to grow unchecked.

Impact on Biodiversity

• Invasive species can have severe negative effects on biodiversity in an ecosystem.
• They can eliminate native species, reducing overall species diversity.
• This occurs because invasive species outcompete or prey on native species, disrupting the natural balance.

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Introduced Species

Summary

• Introduced species are organisms moved by humans to new locations.
• Some become naturalised, while others become invasive.
• Invasive species can harm biodiversity by outcompeting or preying on native species, leading to their decline or extinction.