WCSRT and Invasive Non-native Species

WCSRT recognizes the very real threat posed by non-native invasive species of plants and animals to the biodiversity of all our river catchments.

The uncontrolled growth of Himalayan Balsam, for example, will out-compete bankside plant species and promote erosion, resulting in increased sediment input which has an adverse effect on water quality, gravel spawning areas for fish and gravel habitat for invertebrates. Other species of plants pose threats to human health, damage to property and can cause an increase in flood risk.

Animal species such as American Signal crayfish, killer shrimp and mink have serious negative effects on native species if allowed to colonise our delicate riverine habitat unchecked.

WCSRT fully supports all the local initiatives already in operation in the local catchments and intends to develop further projects to defend our native wildlife against the range of invasive species that threaten their survival.

This page will soon be expanded with sub-pages for each of the WCSRT catchments. Each of the sub-pages will have information on INNS projects within the individual catchment.


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