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18 May 2018

Wading into fishing debate

Mingulay
Scotland’s seas must be protected
The Trust has called on the country’s fish farming sector to fix its pollution problems before contemplating further expansion.

We have added our voice to those of other NGOs, naturalists, anglers, politicians and thousands of members of the public in calling on the industry to clean up its act.

Trust experts say that Scotland has the potential to support a successful sustainable aquaculture sector, but only if the issues of effluent discharge, disease and chemical pollution are effectively managed.

We are calling for a moratorium on the expansion of marine fish farming in Scotland until existing environmental problems are addressed.

As a country, our food and drink products trade on associations with a pristine and beautiful natural environment, and we can’t risk undermining this for short-term gain.

Salmon farming is not effectively managing environmental impacts, and plans to double production, or introduce fish farms to new areas, must be put on hold until solutions are found.

Farmed salmon is the number one food export for the UK, sold in 60 countries and with an estimated value of £579.2m (2016).

Scottish farmed salmon is produced in open cages, anchored in coastal areas of the west coast and the northern isles. There is currently a moratorium on fish farming on the north and east coasts to protect salmon rivers there. The particular problems for the Scottish industry are the prevalence of sealice, which have a damaging effect on farmed fish and also on wild salmon and sea trout.

Senior Nature Conservation Advisor, Dr Richard Luxmoore, commented:

‘The Scottish industry last year lost more than a million fish to sea lice infestations. The impacts on wild fish are harder to measure, but they add to other factors leading to the collapse of wild salmon and sea trout stocks, for instance on the River Awe.

‘Remarkably, there is no single government body with responsibility for the health of our wild fish.’

The chemical treatments used to tackle these infestations can also cause damage to wild species, including crab, lobster and langoustine, themselves economically important.

Luxmoore added:

‘These problems have been exacerbated by a failure to meet even current standards. The aquaculture sector was identified by the Scottish Environment Protection Agency as one of the least compliant sectors, with 20% of fish farms not meeting existing standards in 2015.’

A further problem is the waste food and untreated faeces discharged from fish farms.  

‘A moderately large fish farm will dump the same amount of sewage as a town twice the size of Oban’, says Dr Luxmoore, ‘and, unlike human sewage, it is entirely untreated.’

Luxmoore echoes the findings of the Scottish Parliament’s Environment Committee:

‘The all-party ECCLR Committee of the Scottish Parliament unanimously agreed their report in March of this year and concluded that the current consenting and regulatory framework is inadequate to address the environmental issues.

‘They were not convinced the sector is being regulated effectively, and made it clear that this needs to be addressed urgently because further expansion must be on an environmentally sustainable basis.

‘They also said that if the current issues are not addressed this expansion will be unsustainable and may cause irrecoverable damage to the environment, concluding “the status quo is not an option”.

‘Ambitious proposals to double production and to expand fish farming into new areas of Scotland’s seas cannot be supported until we are confident we can manage these environmental challenges.’

The Trust is therefore calling on plans for expanding production to be put on hold until these problems are addressed. 

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