Why are certain exotic species considered "invasive"? a....

Why are certain exotic species considered "invasive"?
a. They are found in areas where they are not native.
b. They were introduced by humans- often accidentally.
c. They spread aggressively and displace native species.
d. They benefit from being in a new environment.

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Key Concepts

Human-mediated Introduction

Human-mediated introduction refers to the process by which species are transported, whether intentionally or accidentally, to areas where they are not indigenous. This often bypasses natural geographical and ecological barriers, setting the stage for potential invasions.

Ecological Impact

Ecological impact in the context of invasive species describes the harmful effects these organisms can have on native ecosystems. They often alter habitats, displace native species, and disrupt established ecological relationships, ultimately affecting the stability and functionality of the local environment.

Invasive Species

Invasive species are non-native organisms that spread aggressively and have significant adverse effects on their new environments. Their rapid growth and reproduction enable them to outcompete native species, leading to ecological imbalances and loss of biodiversity.

Non-native Species

Non-native species are organisms found outside their historical and natural ranges. They are introduced to new areas by natural processes or human activities, and because they are not part of the established ecosystem, their interactions with local species can be unpredictable.

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