Background Articles

Large numbers of post‑spawning pink salmon are rotting along the Alta River in Finnmark, causing strong odors and anger among anglers. Critics say the river lacked an effective trap in 2025, while managers and authorities cite technical challenges and are using netting and clean‑ups as interim measures.

Researchers have relocated 20 Atlantic catfish to artificial kelp forest units in Melkøy Sound, Northern Norway, to test if reintroducing sea urchin predators can help restore kelp forests overgrazed by booming sea urchin populations.

Japanese beetles are aggressively feeding on ornamental and edible plants in the Halifax area, prompting debate between experts who recommend labor-intensive hand removal and gardeners using pheromone traps that may attract more beetles.

The Norwegian Veterinary Institute begins building a trap at Seida to sort out invasive pink salmon migrating up the Tana River.

Kenai has extended agreements with state authorities to continue its spruce tree mitigation efforts, addressing trees affected by spruce beetles.