Sea ice in the Arctic is one of the most rapidly changing components of the global climate
system. Over the past few decades, summer areal extent has declined over 30%, and all …

Arctic marine mammals (AMMs) are icons of climate change, largely because of their close
association with sea ice. However, neither a circumpolar assessment of AMM status nor a …

We combine satellite observations and numerical models to show that Earth lost 28 trillion
tonnes of ice between 1994 and 2017. Arctic sea ice (7.6 trillion tonnes), Antarctic ice …

We consider the current evidence of climate change effects on marine mammals that occur
in US waters relative to past predictions. Compelling cases of such effects have been …

Polar bears (Ursus maritimus) require sea ice for capturing seals and are expected to
decline range-wide as global warming and sea-ice loss continue,. Estimating when different …

Nineteen subpopulations of polar bears (Ursus maritimus) are found throughout the
circumpolar Arctic, and in all regions they depend on sea ice as a platform for traveling …

In the southern Beaufort Sea of the United States and Canada, prior investigations have
linked declines in summer sea ice to reduced physical condition, growth, and survival of …

Arctic sea ice loss has direct consequences for predators. Climate‐driven distribution shifts
of native and invasive prey species may exacerbate these consequences. We assessed …

Global climate change has led to profound alterations of the Arctic environment and
ecosystems, with potential secondary effects on mercury (Hg) within Arctic biota. This review …

Polar bears are susceptible to climate warming because of their dependence on sea ice,
which is declining rapidly. We present the first evidence for a genetically distinct and …