It’s increasingly difficult to find food using traditional hunting methods in the Arctic, and at the same time, provisions sold at stores are “unaffordable” for many, jeopardizing food security and cultural life in the region, Arctic experts and residents said, responding to a United Nations report released Monday that highlights the impact of climate change on Arctic communities.

Everything from ice-dependent algae to marine mammals to humans relying on sea ice for food and economic opportunities are affected, according to the "Global Biodiversity Outlook 4" report, which assesses the global body’s progress toward achieving its decade-long biodiversity goals.

The knowledge of these environments that the indigenous and local people have is being tested by the rapid climate changes occurring in the region, according to the report.

“We’re not allowed to have food like we used to,” Gary Harrison, traditional chief of Chickaloon village in Alaska, told Al Jazeera, referring to lifestyle changes forced on the region by climate change and increasing commercial interests.

Harrison, 57, said of the total number of salmon taken from the streams, indigenous people pull only about 2 percent; the “lion’s share” goes to commercial fisheries and sport fishermen.

“We hear them fighting over their spot in the river,” said Harrison. “They used to be indigenous people’s spots in the first place.”

Rapid warming in the Arctic “is already leading to increased human activities including shipping, commercial fishing, mining and oil and gas development,” according to the annual Living Planet Report released by the World Wildlife Fund last week.

Disappearing sea ice and rapid industrialization are causing permanent changes to indigenous Arctic communities, according to Whit Sheard, director of the international Arctic program at Ocean Conservancy.

“The challenges facing traditional Arctic indigenous communities are enormous,” said Sheard.

As the ice melts, Sheard said some communities are reburying their elders because cemeteries are becoming exposed. Many of these groups can also no longer store food in the traditional way — in ice cellars — because of the thawing permafrost.

Many indigenous people are struggling to adjust to unpredictable hunting seasons, according to the U.N. report, because of the impact of declining sea ice on wildlife.

“These communities, which continue to engage in the subsistence way of life and practice traditions millennia in the making, are quickly being placed at risk of irreversible change because of the inability or unwillingness of populations great distances away to restrain our excesses and modify our behavior,” Sheard said.