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Galloway Fisheries Trust

Fisheries House, Station Industrial Estate, Newton Stewart, Dumfries & Galloway, Scotland. DG8 6ND
Telephone: 01671 403011 · Fax: 01671 402248 · Scottish Registered Charity No. SC020751

Looking downstream on the River Cree

Brown Trout

Looking upstream on the River Bladnoch

Felling of commercial forestry in Galloway Forest Park

Looking upstream on the River Luce

North American Signal Crayfish

The sandy beach at Loch Grannoch

Belted Galloway Cattle, or 'Belties'

Fly fishing on the River Cree

Murray's Monument

A small upland burn

A stoneloach

The High Cree, looking towards Cairnsmore of Fleet

A small waterfall on the Buchan Burn

A salmon from the Kirkcudbrightshire Dee

Limestone gravel research to ameliorate High Cree low pH

09 May 2013

The contents of an egg box; gravel and recently hatched alevins.

The contents of an egg box; gravel and recently hatched alevins.

As part of the High Cree liming project which is researching whether limestone gravel spawning beds can increase the survival of young life stages of salmon in acidified waters, egg box work has been undertaken in areas of the High Cree. Egg boxes, each containing 100 salmon eggs, were added into three suitable spawning substrate types in the High Cree; pure limestone, non-limestone and a mix of limestone and non-limestone. Nine egg boxes were added to each substrate type. A control site on the Water of Minnoch also had egg boxes added. The egg boxes were buried into suitable areas in mid-January and were collected from the High Cree on 25th April when it was estimated that the eggs had hatched. Each egg box was carefully removed and the number of surviving alevins counted. The results for each substrate type can then be compared to see whether the limestone is helping to increase salmon survival. Early life stages of salmon are very sensitive to acidification. Good survival was found in most egg boxes and the results will be checked to see if there is a statistical difference in survival rates between substrate types. All surviving alevins were returned to the River Cree Hatchery which provided the eggs for this important research.


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