| 英文摘要: | To the Editor —
Wisz et al.1 predicted a substantial exchange of fish species between the Atlantic and Pacific oceans across the Arctic by 2100, including up to 41 species entering the Pacific from the Atlantic. Special attention was given to three commercially important species Atlantic cod (Gadus morhua), Atlantic wolffish (Anarhichas lupus) and yellowfin sole (Limanda aspera). By 2100, they were predicted to colonize the Northeast Passage, potentially providing additional opportunities for high-latitude fisheries.
Central to projections of future fishing opportunities and species diversity in the Arctic are correct predictions of propagation limits of the individual species. According to Wisz et al., Atlantic cod would find suitable environmental conditions in the southern and central Barents Sea by around 2060–2100, concurrently with the Laptev, East-Siberian and Chukchi seas (Fig. 1a). The northern Barents Sea would, according to these simulations, not be suitable even by 2100. We will explore in our response how the nowcasts and forecasts of Wisz et al. correspond to currently realized fish distributions for Atlantic cod. |