今年北極可能無冰，那麼北極熊怎麼辦？能否出現大規模死亡？

11-27

近十萬年來首次！北極今年可能無冰

死亡肯定是有的，年年都在減少，但是大規模可能還不會。
夏天北極熊大部分都上岸了，主要在哈德遜灣，有一部分會在海里捕魚。
真正的危險是冰期縮短，夏天變長。
冰期縮短北極熊捕捉不到足夠的海豹儲存脂肪，上岸以後有可能餓死，雌雄沒有足夠的儲備小熊也會餓死。
夏天變長，儲存的脂肪更是不夠了。
北極熊一般不會在夏天進食，主要靠儲存的脂肪，夏天進食會改變代謝規律，沒有足夠的食物會死的更快
之前看過一個紀錄片，有一部分北極熊開始慢慢適應這種變化，除了吃一些北極動物之外，有些在岸上會吃漿果，或者吃同類的屍體（這種情況很罕見）

多年來北極熊數量不僅沒有減少，反而大量增加了。樓主有點杞人憂天了。
Polar bear populations are still growing despite global warming, according to new research.

The new population estimates from the 2016 Scientific Working Group are somewhere between 22,633 to 32,257 bears, which is a net increase from the 2015 number of 22,000 to 31,000. The current population numbers are a sharp increase from 2005』s, which stated only 20,000 to 25,000 bears remained — those numbers were a major increase from estimates that only 8,000 to 10,000 bears remained in the late 1960s.

Until the new study, bear subpopulations in the Baffin Bay and Kane Basin (KB) were thought to be in decline due to over-hunting and global warming. The new report indicates this is not the case.

Scientists are increasingly realizing that polar bears are much more resilient to changing levels of sea ice than environmentalists previously believed, and numerous healthy populations are thriving.

Predictions that bears would die due to a lack of sea ice have continuously not come to pass. Recent rumors about polar bear extinction underscore another time when scientists discovered the creatures possess higher resilience to changing levels of sea ice than previously believed. Another new study by Canadian scientists found 「no evidence」 polar bears are currently threatened by global warming.

很悲傷因為人類的族群造成了北極熊種群的大量減少。我們雖然離北極很遠但冰蓋融化和我們每個人都有關係。突然就覺得人是有原罪的

按照我所學的知識，據說物種在面臨極大困難時會進化（模糊不清的見過這一段）

我覺得它們也一樣。但是並不是它們進化了，人類就求了心安理得。

每一個人都應該盡自己力所能及去保護地球家園

保護生態環境，從自己做起，就是保護自己。

突然發現已經進入北半球盛夏。
不知北極熊過得如何？

十萬年自然環境，一夕大變，北極熊這個物種能適應嗎？