Late Lunch Talk: What happens to the Arctic ecosystem when sea ice disappears? The case of polar cod (Boreogadus saida)
Late Lunch Talk by Nicolas Dupont
The Arctic Ocean is a marine area characterized by the long-lasting presence of sea ice and important variation in light conditions throughout the year. Arctic species and their ecosystem are adapted to the presence of sea ice which plays a central role in the life history of those species. The gradual disappearance of multiyear sea ice as a consequence of climate change and increasing temperature poses a challenge to the survival of Arctic species and the ecosystem. In this presentation I will first broadly introduce how the Arctic area ecosystem is adapted to sea ice and how sea ice shape the life history of Arctic species. I will then present observations and predictions of the consequences of decreasing sea ice on the Arctic species and their ecosystem with a special emphasis on polar cod (Boreogadus saida), a key fish species in the Arctic Ocean.