今日渔获何去何从？

What’s the catch of the day? Warming oceans and evolution make fish less likely to be on the menu Joseph Travis1 and David Reznick2 The inexorable warming of Earth and its oceans will upend many biological systems on which humans depend. A large question looming on this horizon is what food will the world’s oceans and rivers provide in a warmer world. Aquatic systems supply protein to billions of people, and this need is projected to grow as the human population increases. Can the world’s aquatic systems sustain their present level of protein production, let alone meet its anticipated increase in demand? Increasing temperatures cause the average body sizes of harvested fish, and therefore fishery yields, to decline (1). …