Tag Archive for: continuité écologique

Opening of the Poutès dam on Monday 7 October

As has been the case every year for the past 3 years, the large gates of the ‘New Poutès’ were opened in automn to allow the highly migratory fish free passage and a free access to the best spawning grounds.

This year, 67 salmon from the Loire-Allier axis passed through the fish pass on the right bank of the Vichy dam bridge, but it is estimated that around a hundred fish must have passed through.

After interrupting their migration to spend the summer between Vichy and Langeac in the Allier or its tributaries, the survivors have restarted their migration towards the Dore, Sioule or Alagnon, and of course the Allier, with the arrival of more favourable temperatures. Over the next few days, they will pass through the Brioude, Vielle Brioude and Langeac dams before reaching the new Poutès dam, where the sluice gates were lowered on Monday in anticipation of their arrival.

Last year, spawning grounds were observed upstream of the Poutès, indicating that more than a dozen fish had returned to the Upper Allier. It is not yet possible to count fish at Poutès when the gates are open, but observing the spawning grounds upstream is still a good indicator. About ten spawners are expected to pass this year.

The gates will remain open for 2 months before closing again to enable hydroelectric production to resume.

 

Watch our two 2-minute videos

 

and the webpage : ‘New Poutes dam‘

World Rivers Day, another step towards freeing our rivers

This September, thanks to the support of the European Rivers Network under the Open Rivers Programme, a number of river barrier removal projects are scheduled in France, in sub-basins of the Dordogne, Loire, Gave de Pau and Rhône (see details in the press release).

After three years of implementation of the Open Rivers Programme, more than 140 projects have been supported throughout Europe, including around ten in France, thus contributing to achieving the objective of 25,000 km of free rivers by 2030 in Europe, as set out in the European regulation on nature restoration and measure 20 of the National Strategy for Biodiversity (SNB) 2030, which aims to strengthen actions in favour of ecological webs and remove their main obstacles. Faced with the consequences of climate change, removing weirs and dams that have no use or have a high impact is a key measure for limiting the warming of water, restoring access to refuge areas and increasing the resilience of habitats and species.

On World River Day, we feel it is important to point out that life in our rivers and the quality of our watercourses is still too severely degraded and that urgent action is needed to halt the erosion of biodiversity and cope with the effects of climate change. ‘Repairing rivers and making environments and species more resilient to variations in temperature and hydrology will depend solely on our actions and involvement. There is still a huge task to be done, and it is sometimes difficult to get people to accept it,’ explains Roberto Epple, President of the European Rivers Network. Yet these projects are the result of a long, complex and collective process, combining technical work and consultation, and sometimes militant struggle. So each ecological restoration project is a source of pride, an event to be celebrated that contributes to restoring our shared heritage.

The projects taking part in the Open Rivers Programme are located in sensitive, protected areas with high biodiversity potential, and will help to reconnect habitats for fish (trout, lamprey, salmon), white-clawed crayfish and pearl mussels. ‘By re-establishing the natural dynamics of the watercourse and facilitating the movement of species, we are restoring the system and the complex interactions between living beings and their environments, and providing an additional opportunity to adapt to climate change. These are ‘no-regrets’ measures that benefit everyone,’ explains Corinne Ronot, Project Manager at the European Rivers Network. A range of highly ambitious projects that the European Rivers Network has submitted to the Open Rivers Programme for funding, sometimes in addition to that provided by the French Water Agencies.

Read presse release (in french)

World Migratory Fish Day: Watch and share our videos

To mark World Migratory Fish Day on Saturday 25 May, ERN-SOS Loire Vivante is launching three videos about Atlantic salmon and ecological continuity.

These videos are previews of remixed extracts from the documentary entitled “Pour une fois qu’il faut laisser couler”, which will be released shortly.

The 2-minute portrait and landscape modules presented here, in French and English, plunge you into the life of the Atlantic salmon in the Allier and Sélune rivers and present 2 major innovative and far-reaching actions that France has taken to restore access to the upstream areas of rivers and streams, the historic breeding grounds of the Atlantic salmon.

Discover these videos :

The New Poutès, the dam that opens for wild salmon 
watch the French version / watch the English version

Allier River : An obstacle course for salmon
watch the French version / watch the English version

France: The largest dam removal project in the world, 2017-2022
watch the French version / watch the English version

 

All the videos can also be viewed on our new YouTube channel: “Rivières Vivantes – Laisser Couler”: https://www.youtube.com/channel/UCjokCmOpXMcgD4ag3UY3ctg

Note :

  • France is the European leader in the restoration of ecological continuity, particularly through the removal of small and large transverse structures. Since 1997, it has built up recognised expertise through innovative policies and major international projects. At a time when the decline in populations of migratory fish and fish at the head of river basins, such as trout, is alarming, we need to pursue innovative actions that provide the most effective response to the challenges of biodiversity.
  • To publicise France’s experience, you will soon be able to watch the full documentary produced by ERN – SOS Loire Vivante as part of the OFB’s Mobbiodiv call for projects. The 3-part film, told from the point of view of our association, traces the history of the major events and projects that have marked the restoration of free movement of rivers in France from 1997 to the present day.
    “For once it’s time to let things flow
    part 1/3: Reopening river routes to large migratory species
    part 2/3: Reconnecting small and medium-sized rivers
    part 3/3: Rethinking and reconfiguring major blocking structures

81% average decline in migratory fish populations since 1970

The new Living Planet Index (LPI) report on migratory freshwater fish published today by the World Fish Migration Foundation (WFMF), ZSL, IUCN, The Nature Conservancy (TNC), Wetlands International and WWF has highlighted an 81% decline in the size of monitored populations on average between 1970 and 2020, including catastrophic declines of 91% in Latin America and the Caribbean and 75% in Europe.

Populations of migratory freshwater fish species continue to decline across the globe, risking the food security and livelihoods of millions of people, the survival of countless other species, and the health and resilience of rivers, lakes and wetlands. Habitat loss and degradation – including fragmentation of rivers by dams and other barriers and conversion of wetlands for agriculture – account for half of the threats to migratory fishes, followed by over-exploitation. Increasing pollution and the worsening impacts of climate change are also fuelling the fall in freshwater migratory fish species, which have now been declining consistently for 30 years.

The index reports on population trends of 284 monitored freshwater f ish species, representing 1,864 populations (Figure 1). Globally, the index shows a decline of -81% between 1970 and 2020, or an annual decline of 3.3%. This downward trend has been consistent over the last 3 decades. In terms of global species trends, 65% of species have declined on average, while 31% have increased.

In a press release Herman Wanningen, founder of the World Fish Migration Foundation said Herman Wanningen, fondateur de la World Fish Migration Foundation a déclaré “The catastrophic decline in migratory fish populations is a deafening wake-up call for the world. We must act now to save these keystone species and their rivers. Migratory fish are central to the cultures of many Indigenous Peoples, nourish millions of people across the globe, and sustain a vast web of species and ecosystems. We cannot continue to let them slip silently away.”

The report is not all doom and gloom. Nearly one third of monitored species have increased, suggesting that conservation efforts and improved management can have positive impacts. Some promising strategies include the improved and/or species-focused management of fisheries, habitat restoration, dam removals, the creation of conservation sanctuaries, and legal protection.

For example, in Europe and the United States, thousands of dams, levees, weirs and other river barriers have been removed in recent decades, and momentum for such actions is growing*. Dam removals can be cost-effective, job-producing solutions that help reverse the disturbing trend of biodiversity loss in freshwater systems as well as solutions that improve river health and resilience for people, too.

While scaling up dam removals is a key solution to reversing the collapse in freshwater migratory fish populations, there are more. Decision makers across the globe must urgently accelerate efforts to protect and restore free-flowing rivers through basin-wide planning, investing in sustainable renewable alternatives to the thousands of new hydropower dams that are planned across the world as well as other measures that contribute to the ambitious goals in the Kunming-Montreal Global Biodiversity Framework to protect 30% of inland waters and restore 30% of degraded inland waters. Rising to the Freshwater Challenge’s goal of restoring 300,000 km of degraded rivers will contribute enormously to reversing the trend in migratory fish populations.

Along with protecting and restoring healthy rivers, there is an urgent need to strengthen monitoring efforts; better understand fish species’ life-history, movement and behaviour; expand international cooperation, such as adding more freshwater migratory fish species to the Convention on Migratory Species (CMS); and promote greater public and political engagement.

There are many initiatives around the world supporting the recovery of migratory fish species and freshwater biodiversity in general. The Emergency Recovery Plan for Freshwater Biodiversity highlights a variety of measures that could transform the management and health of rivers, lakes and wetlands to improve the health of freshwater systems and biodiversity.

Read the executive summary

Read the study 

*In 2023, Europe removed a record 487 barriers – a whopping 50% increase over the previous high reported in 2022. Meanwhile, in the United States, the largest dam removals in history are currently underway along the Klamath River in California and Oregon.

Read press release (en anglais) 

Our 2023-2024 webinars are online: flood risk, ecological continuity, hydric stress, etc.

With between 70 and 90 people registered for each webinar, SOS Loire Vivante – ERN is helping to raise awareness of the issues surrounding water and rivers.
Watch the replays of our webinars from December 2023 and January 2024 (french only):

9 January 2024: Flood risk: “How can technology help us respond better to flood risk?” more info and programme here
19 December 2023: Law, Hydro & Ecological Continuity, more info and programme here , organised in partnership with Réseau RivièresTV, the Centre de Ressources Cours d’eau and supported by the French Office for Biodiversity (OFB)
5 December 2023: Water stress and water savings on the Allier, more info and programme here

All our webinars since 2020 (french only)