Skip to content

You are using an outdated browser

Internet Explorer is not supported by this site and Microsfot has stopped releasing updates, therefore you may encounter issues whilst visiting this site and we strongly recommend that you upgrade your browser for modern web functionality, a better user experience and improved security.

Upgrade my browser

Scotland is planting millions of trees beside rivers and streams to protect wild salmon

Source: Paul Glendell/PressAndJournal

The River Dee initiative comes as rising water temperature from climate heating threatens the protected species’ survival.

Scotland to plant millions trees to shade salmon from the sun

As the water temperature rises due to climate change, Scotland is making an initiative to ensure the survival of their wild salmon. The Board and Trust and fisheries of River Dee are planning on planting millions of trees along rivers of Scotland to save wild salmon, considered a protected species, from the worst effects of climate change, according to NatureWorldNews.

Although the exact underlying mechanisms are unclear, it is likely that climate change driven alterations in oceanic processes and the effect on prey availability are key factors.
Mortality at sea appears to be a major factor in the widespread decline of salmon across its North Atlantic range. Although the exact underlying mechanisms are unclear, it is likely that climate change driven alterations in oceanic processes and the effect on prey availability are key factors. Source: TheScottishFarmer.com

Scotland’s rivers are becoming too warm for wild salmon to spawn

In Scotland, the River Dee Board and Trust and fisheries are planting millions of trees along rivers to help save wild salmon from the effects of global warming.

Scotland’s rivers are already becoming too warm in the summer for wild salmon to spawn, putting more pressure on these cold-water fish. Wild salmon prefer water temperatures around 10°C (50°F) and cannot withstand the heat of waters at 33°C (91.4°F).

Fisheries noted the lowest rod catch of salmon in 2018, when water temperatures for about 70% of rivers reached a temperature of 23°C (73.4°F) at least one day of the summer that year, causing heat stress for the fish.

“These rivers and burns are the nursery grounds for young fish and it’s the young fish which will be affected by summer temperatures – their feeding and growth rates are affected,” said Lorraine Hawkins, river director for the Dee District Salmon Fishery Board. “If it gets hotter, we will see fish dying.”

Tree cover can help cool water temperatures, but according to Marine Scotland scientists, only about 35% of rivers in Scotland have enough tree cover for the cooling effect.

Source: EcoWatch 

climate change affecting food availability; weirs and other obstructions in rivers; predation by soaring seal populations; sea lice attracted by fish farms; bycatch by trawlers at sea and poor river quality. Pictured, tree planting along the upper reaches of the River Gairn, a tributary of the River Dee.
The dramatic decline in wild salmon numbers is blamed on numerous factors: climate change affecting food availability; weirs and other obstructions in rivers; predation by soaring seal populations; sea lice attracted by fish farms; bycatch by trawlers at sea and poor river quality. Pictured, tree planting along the upper reaches of the River Gairn, a tributary of the River Dee. Source: PressAndJournal.co.uk

The trees will provide shade, boost biodiversity, help control flooding and manage soil-health

The River Dee Board and Trust has planted thousands of trees along the River Dee and its tributaries since 2013, with plans to plant over 1 million trees in this area by 2035. Planted trees will include juniper, aspen, birch, willow, and Scots pine. Fisheries are also joining to plant millions more trees along remote streams and rivers to further help conserve the wild salmon population.

“We’ve seen situations where the temperatures in our rivers are approaching critical levels for our salmon, temperatures that they can’t tolerate,” said Alan Wells, the director of Fisheries Management Scotland. “This will get worse. We need to grow trees now to create that cooling shade.”

Aside from providing shade, the trees are also expected to boost biodiversity by providing habitat for insects and small animals. They can also help control flooding and manage nutrients for the soil and water.

While planting trees will help reduce water temperatures, wild salmon face a host of threats, including the lack of food due to climate change, dams, increasing populations of seals, sea lice from fish farms, bycatching and poor water quality. Salmon are considered protected in Scotland, and they are included in the list of OSPAR threatened/declining species and the Scottish Biodiversity List.

In addition to the tree planting initiatives, the Scottish government has laid out an action plan to protect salmon by improving water quality, controlling and preventing invasive species, managing salmon exploitation and working with international partners to save Atlantic salmon and other marine species.

Source: EcoWatch 

It’s hoped measure like this will help control the rising water temperatures by creating shade over the river. Photo by Paul Glendell glendell.co.uk
Tree planting along the upper reaches of the River Gairn, a tributary of the River Dee. It’s hoped measure like this will help control the rising water temperatures by creating shade over the river. Photo by Paul Glendell glendell.co.uk Source: Paul Glendell/PressAndJournal

Fishing season now open!

The angling season just started for salmon along rivers like the Dee, in Aberdeenshire, near Cairngorms National Park. Deeside is one of the world’s most famous salmon fishing rivers, and it’s estimated to provide between £5-6 million ($7-8 million) annually to the local communities.

However, according to Marine Scotland scientists, only about 35% of rivers in Scotland have enough tree cover for the cooling effect.
Tree cover can help cool water temperatures. However, according to Marine Scotland scientists, only about 35% of rivers in Scotland have enough tree cover for the cooling effect. Source: Deus Ex/Wikipedia
Make an Impact

LIFETERRA: JOIN OUR MISSION TO RESTORE LANDS NEAR YOU

Join our mission to restore lands near you Plant trees, become a volunteer, trial our education course, organise a restoration project, offer land, donate a tree or compensate your carbon. Join in!