Norwegian Institute for Nature Research

Thermal bottlenecks constrain early-life survival of native fish in regulated rivers

Climate change is reshaping thermal regimes worldwide, threatening species whose early development depends on narrow temperature ranges. Yet directly linking warming to reproductive failure in wild populations remains intractable, particularly in aquatic ecosystems. We developed...

Significant fine-scale population differentiation in two common bumblebee species (B. pascuorum and B. lapidarius) detected in Northern Europe

Abstract Bumblebees are keystone pollinators which facilitate the reproduction of a wide range of wild and agricultural plants. Their abundance and diversity have been severely reduced by anthropogenic stressors such as widespread land-use change and habitat fragmentation. Howeve...

Multiple introductions of highly pathogenic avian influenza viruses into the High Arctic: Svalbard and Jan Mayen, 2022–2025

Abstract Between 2022 and 2025, highly pathogenic avian influenza viruses (HPAIVs) of clade 2.3.4.4b, including four distinct H5 Eurasian (EA) genotypes, were detected in wild birds and mammals in the Svalbard Archipelago and on the island of Jan Mayen. We describe their epidemio...

Day length may impose an ecological constraint on chick provisioning behaviour in a high-latitude seabird

Abstract Variation in daylight hours may shape light-dependent behaviours both across seasons and among latitudinally distinct breeding colonies. We investigated the influence of photoperiod variation on chick provisioning behaviour in a high-latitude seabird, the Manx shearwater...