Invasive species

Aug 26, 2022 | News

Tay Rivers Trust Fundraising 2022/23 – Invasive species

We wish to see this threat managed or hopefully eliminated altogether.

The Tay Rivers Trust are aiming to raise funds through fundraising to add to those resources obtained through the Tay proprietors annual levy. 

Please support us and help save wild Atlantic salmon 

Calum Innes,

Chairman, Tay Rivers Trust

 

Invasive Species

Signal Crayfish are present in several parts of the district, but, while not so apparent in some areas such as the Earn, they have been spreading rapidly in the Ericht system. It is feared they will have an impact on juvenile salmon but this risk is still poorly understood. In order to capture what opportunity still remains to obtain baseline data on the salmon population before it is completely overrun, it is imperative to identify where crayfish have spread to and to do so quickly. 

Environmental DNA (eDNA) offers a potentially easy solution for identifying upstream limits and possibly indicating where numbers are thinning out at the downstream end. Fish surveys will then follow.

Non Native Fish In The Rannoch Area A number of species of coarse fish were introduced to several smaller lochs and lochans in the west Rannoch area some decades ago. Should they ever escape or be moved, to both the unique genotypes of char and trout present in lochs Laidon and Rannoch and to the further Tummel and Tay system. Climate change will increase this risk as cyprinid fish do better in warmer temperatures.

We wish to see this threat managed or hopefully eliminated altogether.

If you wish to discuss making a significant gift to make a strategic impact to Atlantic salmon in the Tay river catchment please contact our Major Gifts Fundraiser, here.