The lack of sea ice has forced 35,000 walruses to go ashore in Alaska, rather than resting on sea ice to [ take quick trips to feed. ]( http://www.theguardian.com/world/2014/oct/01/walrus-mass-vast-numbers-alaska-beach-sea-ice-retreats ) This surely makes it hard for them to eat, and will therefore interfere with reproduction.
Ссылка: https://stallman.org/archives/2014-jul-oct.html#2_October_2014_%28Walruses%29