What Happened
In late May, in a narrow stretch of the Columbia River, between the Rocky and Purcell mountains, in western Canada, Mark Thomas, salmon chief for the Upper Columbia Secwépemc, received groups of students. These students, from schools in nearby towns, had spent the last five months raising sockeye salmon (Oncorhynchus nerka) in their classrooms, watching the transformation of pea-sized eggs into newly hatched alevins, with a yolk sac still attached to their silver bodies, and then into free-swimming fry.
That morning, they would release these fry into the river, just below its source, in the province of British Columbia. “When you go down to the river, tell the river your name, introduce yourself to the water spirits,” Thomas told them. “Then you can pray for anything you want. You can pray to be smarter, or taller. You can pray for your family — or for the fish.”
Why It Matters
The Fish-in-Schools program, which allows students to raise salmon in their classrooms and release them into the river, is more than an educational experience. It is an effort to restore salmon populations in the Upper Columbia River, which have been devastated by dams, pollution, and other human activities. The participation of First Nations, such as the Secwépemc, is crucial to the success of this effort, as they bring traditional knowledge and a deep connection to the land and water.
Salmon restoration is not just an environmental issue, but also a cultural and economic one. Salmon are an important source of food and income for many communities, and their loss can have significant impacts on the health and well-being of these communities.
The Mechanism/Science Behind It
Sockeye salmon are an anadromous species, which means they are born in freshwater, migrate to the ocean, and return to freshwater to spawn. However, the construction of dams and other barriers can prevent salmon from reaching their spawning grounds, leading to a drastic reduction in populations.
The Fish-in-Schools program helps to circumvent this problem by raising salmon in captivity and releasing them into the river, where they can migrate to the ocean and return to spawn. Additionally, the program helps to educate communities about the importance of salmon conservation and the need to protect aquatic habitats.
Bigger Context
Salmon restoration in the Upper Columbia River is part of a broader effort to protect and restore aquatic ecosystems around the world. The loss of aquatic biodiversity is a serious problem, with many fish and other aquatic species facing significant threats due to pollution, overfishing, and habitat destruction.
However, there are many examples of successful ecosystem restoration, and the Fish-in-Schools program is one of them. The combination of education, conservation, and community involvement can be a powerful tool for protecting and restoring aquatic ecosystems.
What Happens Next
Now that the fry have been released into the river, the next step is to monitor their progress and ensure they have the best chance of surviving and spawning. This includes monitoring water quality, controlling the presence of predators, and ensuring that aquatic habitats are protected.
In addition, the Fish-in-Schools program will continue to educate communities about the importance of salmon conservation and the need to protect aquatic habitats. The participation of First Nations will be crucial to the success of this effort, and it is likely that their traditional knowledge and connection to the land and water will be essential for the successful restoration of salmon in the Upper Columbia River.
Source / Reference
This article was originally published on Mongabay.