La Truite fario en Bretagne : que révèlent 10 ans de suivi scientifique ?

The brown trout (Salmo trutta) is an emblematic species of first-category rivers in France. A true indicator of the quality of aquatic environments, it is at the heart of a vast scientific program conducted in Brittany since 2015. Faced with climate change and increasing human pressures, the Breton departmental fishing federations have launched a regional monitoring program based on the VIGITRUITE protocol, standardized by INRAE. 📊 In 10 years: 87 stations studied 458 electrofishing operations 57 stations monitored on average each year 86% of stations renewed annually 🔎 Key findings: High variability in juvenile recruitment (class 0+) A gradual increase in the average size of trout fry A confirmed density-growth relationship A direct impact of water temperature on recruitment A strategic role for headwaters 🌡️ Warming waters, reduced flows, habitat degradation: what are the real factors influencing the future of brown trout in Brittany? This video explains the scientific results of the regional network coordinated by the Regional Association of Fishing Federations of Brittany, in partnership with the French Office for Biodiversity and INRAE. 👉 Understanding these dynamics means better protecting our rivers and preserving sustainable fish population management. 🎥 On the agenda: ✔️ VIGITRUITE® Methodology ✔️ Analysis of juvenile densities and sizes ✔️ Key environmental factors ✔️ Effects of climate change ✔️ Challenges for fish management 💬 Feel free to comment and share your experiences on your rivers! 👍 Like the video if you'd like more scientific content on fishing and aquatic environments. 🔔 Subscribe to follow our upcoming videos #BrownTrout #SalmoTrutta #Fishing #Brittany #Biodiversity #Rivers #ClimateChange #FishManagement #VIGITRUITE