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.

The South-central Invasive Species Strike Team is actively working in Bristol Bay to manage and control the spread of invasive species, such as Bird Vetch, which threaten local ecosystems essential for subsistence in Alaska.

The article discusses the rise in tick-borne illnesses in Canada, highlighting a case of Powassan virus and the challenges in diagnosis and treatment due to limited awareness among healthcare providers.

An aerial survey revealed 3,000 acres of Maine's forests damaged by spruce budworm in July, with 178,000 acres at risk next spring. The state uses early intervention to prevent an outbreak similar to the one from 1967 to 1993 that devastated millions of acres.