intrusiivisille

Intrusiivisille refers to invasive species in Finnish. An invasive species is a non-native organism whose introduction and spread cause, or are likely to cause, environmental, economic, or human health harm. These species are often introduced intentionally or accidentally by human activities, such as trade, travel, or horticulture. Once established in a new environment, they can outcompete native species for resources like food, water, and habitat. They can also introduce diseases or parasites to which native organisms have no immunity, or alter the physical structure of ecosystems.

The impact of invasive species can be significant. Ecologically, they can lead to a decline in biodiversity, disrupt food webs, and even cause extinctions of native flora and fauna. Economically, they can damage agricultural crops, forestry, fisheries, and infrastructure. For example, invasive plants can clog waterways, while invasive insects can destroy valuable timber. In terms of human health, some invasive species can carry diseases or produce allergens that affect people.

Managing invasive species is a complex and often costly process. Prevention is considered the most effective strategy, involving measures to stop the introduction of non-native species in the first place. Early detection and rapid response are also crucial to control populations before they become widespread. If an invasion has already occurred, management options may include eradication, containment, or biological control, although these methods can have their own challenges and unintended consequences.