Help Salmon Find Their Spawning Ground

Salmon and freshwater pearl mussel
 


Several dams were constructed to this river 70 years ago, and salmon could no longer swim up the river to spawn. Now humans have removed dams and built fish passages.

Salmon can run up again!

Help salmon find their spawning ground!
At the same time you also help freshwater pearl mussels.

Freshwater pearl mussels can live very long, over 200 years, but they cannot reproduce without the help of salmon.

The mussel larvae live in the gills of young salmon to survive their first year. After that they set loose and dig themselves in the bottom gravel of the river. The larvae don’t harm the salmon. Part of the mussels are specialized in attaching to salmon juveniles, while the rest prefer trout. Those specialized in salmon can only reproduce with them.

Another awesome reason why salmon are so important!

Salmon spawn

When the salmon spawn, the female salmon meet with the male salmon and create offspring. With its tail the female salmon digs a hollow in the riverbed. This hole is called a redd. She lays her eggs in the redd, and the male salmon follows and drops his roe in. When the eggs and the roe combine, tiny fish babies start to emerge inside the eggs.

Salmon spawning

Lifecycle of the freshwater pearl mussel

The mussels in this picture use trout youngsters as their temporary host. The salmon younglings look a bit different.

Trout and freshwater pearl mussel reproduction
 

Learn more about dam removal and migrating fish:
World Fish Migration Day

 
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EU water law – fit for purpose but threatened by industry lobby!

Water framework directive is in danger
 


WWF expects member states to take a strong stand in support of maintaining the Water Framework Directive in its current form at the Meeting of the Environment Council on 5 March.

Stand up to industry, stand by the science: What WWF will be looking for during the 5 March Meeting of the Environment Council
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New evidence came out this week demonstrating that EU industry lobby are pushing to reopen the WFD

 
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EU Water Law is Fit for Purpose!

Water framework directive is fit for purpose
 


Christmas comes early for rivers and nature:
The European Commission’s final evaluation of EU water legislation has concluded the EU Water Framework Directive to be “fit for purpose”.

 
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EU needs to implement the UN Sustainable Development Goal 2030

UN - Sustainable Europe by 2030
 


WWF: “EU governments today reiterated their demand for an ambitious EU strategy to translate the UN Sustainable Development Goal (SDGs), with clear targets and monitoring mechanisms.”

 
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Fish Migration from Sea to Source

Migratory fish are in trouble

At least half of all the flow in the world’s rivers is manipulated or fragmented, and the wild free flowing rivers are now more threatened than ever. Only 64 of the 177 rivers, longer than 1,000 km, are free-flowing and yet there are plans to build more than 3,500 new large dams in Asia, Africa and South America.

Migratory fish and river ecosystems need our help: dam removal, fish passages, river restoration, wetland and forest protection, and so on.

Learn more about migratory fish, rivers and what you can do from the book “From Sea to Source 2.0“!

You can download a free PDF version of the book from here: From Sea to Source 2.0

Here are the cartoons I made for the book.

Happy migratory fish vs dam
 


Fish migration - eel and trout
 


Migrating fish and a free running river
 


Salmon run
 


Global threats for migrating fish
 


Dam removal swimway and fish passages
 


Hydro power companies politicians and water law
 


Fish migration - nature-like fish passage
 


Dam removal swimway and fish passages
 


Education - school of fish
 
 
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