What aspect of an organism makes it an invasive species? It has no predators in the new ecosystem? It does harm and is introduced to the ecosystem? I think it's wrong. A different ecosystem? It is harmful to organisms ecosystems??
An invasive species is typically characterized by its ability to cause harm when introduced into a new ecosystem. Some key aspects that make an organism invasive include:
1. Rapid growth and reproduction: Invasive species often have high reproductive rates and can quickly multiply in numbers, outcompeting native species for resources and space.
2. Lack of natural predators or control mechanisms: In the absence of natural predators, parasites, or diseases that would normally control their populations, invasive species can thrive and cause harm to the ecosystem.
3. Competitive advantage: Invasive species may possess traits that allow them to outcompete native species for resources such as food, water, sunlight, or habitat. They can disrupt the ecological balance and reduce biodiversity.
4. Adaptability and tolerance: Invasive species generally possess traits that make them more adaptable to new environments, allowing them to establish and spread rapidly.
5. Environmental impact: Invasive species can significantly alter the physical structure, composition, and functioning of ecosystems. They might negatively affect native species through predation, competition for resources, or by introducing new diseases, changing fire regimes, or modifying habitats.
Therefore, it is the combination of these factors that contribute to an organism being labeled as invasive, and their introduction into a new ecosystem can indeed be harmful to the organisms and ecosystems already present there.