Radical transformation of the Pacific Arctic Includes Impacts to Freshwater

Scientists from multiple agencies, working collaboratively to supply data to the Arctic Integrated Ecosystem Research Program, are detecting rapid changes in the Bering and Chukchi Seas. These changes are driven by abnormally high water temperatures and rapid loss of sea ice (on par with climate predictions for 2040), and include high numbers of Pacific cod and pollock expanding into Arctic waters, higher concentrations of harmful algal blooms, and a sea bird die-off that began in 2014 impacting puffins, common murre and, most recently, short-tailed shearwaters. At the base of the food web, larger, high-fat copepods are declining while smaller, copepods with a lower-fat content are flourishing. This means less nutrition for Arctic cod, while, at the same time, more competition for these resources as pollock expand their range northward.

But these troubling changes are not limited to northern ocean waters. Inland, freshwater rivers in the Arctic are overheating. Record-warm temperatures in July, 2019 caused heat stress and a mass die-off in returning, pre-spawned salmon. Read more.

Indigenous Communities are Essential Part of Climate Discussion

 

Native Village of Elim Staff Collecting Flow Data – Tubutulik River, Western Region, Alaska

A new report released by the People’s Climate Network (PCN)— an alliance of activists, scholars and citizens from around the world, suggests that the role indigenous communities can play in mitigating the climate crisis is being overlooked. While global climate change movements make headlines and ”highly-educated people in far-off cities make policy” the People’s Climate Report, attempts to “amplifying voices from the grassroots.”

The report also highlights coexistence of forests, wildlife and local communities is highlighted to provide the perspective of local communities of the impacts of climate change and extraction industries especially mining. Such development leads to loss of forest cover, depletion of groundwater, increase in net-carbon emissions, changes in local weather patterns, loss of traditional tribal livelihoods and a collapse of various plant and animal species—all in the name of ‘development’.

The report show cases the case of Devi, India in which twenty year earlier, locals took the lead in returning health back to forest ecosystem after mining activity devastated the area. This included groups of mostly women who get up early in the morning to patrol forests in groups and digging pools and making mud dams to conserve water. Now a fully recovered forest with abundant resources including a steady supply of food and water, which has resulted in the return of the animals.

According to the report, “[t]hese natural resource dependent communities are among the poorest of the poor.” “They have not had a single day of formal education. And yet they have been the ones protecting this 200-hectare forest for the past twenty years or so.”

Similarly, Last month Hannah Panci from the Great Lakes Indian Fish and Wildlife Commission spoke at Lawrence University as part of the Spoerl Lecture Series, about climate impact and preparedness. Specifically, Panci discussed working with almost a dozen local Native American tribes, to develop a climate vulnerability assessment which combines both scientific research and traditional ecological knowledge (TEK) in order to create a vulnerability score for different species on tribal lands.

The organization gathers TEK by visiting the various communities, which include members that still make their living off hunting, gathering and fishing, and interviewing community these members about changes they are noticing about fish and wildlife they use for subsistence. Through this process, important information about traditions that have been passed down for generations and which species are the most important to the tribes. According to Panci, two of the main ones are wild rice and walleye, but there are 11 primary species that tribal members are concerned about.

The Great Lakes Indian Fish and Wildlife Commission then applies this information to determine what impacts climate change is having on these species and apply current scientific data to create maps of the region where such impacts are occurring and apply protection measures. By combining conventional science and local knowledge of locals is the best possible means for assisting tribal communities in the Great Lakes to prepare for climate change.

Finally, during a recent event at UC Davis in March 12, professor Beth Rose Middleton who is chair of the Native American Studies Department and Fellow at the John Muir Institute of the Environment, discussed “Tribal Leadership in Climate Change Adaptation.” Professor Middleton discussed the leadership in environmental policy and planning provided by California Indian nations in traditional including land stewardship and interventions in state, national and international policy. Middleton’s research includes Native land trusts, Native-led conservation land acquisitions, tribal participation in the carbon credit market and the importance of re-introducing traditional fire management.

 

Unprecedented Numbers of Pink Pacific salmon are showing up in the Arctic

In the latest indication of the rapidly warming waters in the western Arctic, Pink salmon were recently caught in the western Nunavut waters of Cambridge Bay. According to Karen Dunmall, an aquatic biologist with Fisheries and Oceans Canada, due to diminishing sea ice, Pacific salmon have been following food sources, which include plankton to jellyfish, shrimp and smaller fish. This is another indication that climate change, which results in thinner sea and fresh water ice that forms later and breaks up earlier, warmer rivers, milder winters, longer summers and changes in wildlife and vegetation, is affecting the Arctic more dramatically than anywhere on the globe. It’s n across the Arctic

In total, the Arctic research salmon program estimates that in 2019 roughly 2,000 salmon samples have been provided to them – almost triple the number from 19 years of monitoring harvesters and this number appears to be rising.

Similarly, Pink salmon have spread to parts of northern Europe after being released into rivers in Russia in the 1960s. Unprecedented numbers of the fish were found in Scottish rivers in 2017 and they were seen again in 2019 on the Dee which flows through Aberdeenshire, the Tweed which passes through the Borders, Kyle of Sutherland which is an estuary in the east Highlands and the River Ness which flows through Inverness and into Loch Ness when in September, a lone male was captured on one of our underwater surveillance cameras.”

Fishery managers in Scotland are concerned that the Pinks which are voracious eaters and which have already become established in rivers and streams in Norway, could colonize Scottish rivers and out compete native Atlantic .

Whales, Seals, Salmon and Walrus Die-offs Indicate Collapsing Arctic Ecosystem

On August 1, Greenland lost more than 12 billion tons of ice in a single day. Due to a heatwave the struck Greenland last week, Greenland ice sheet lossed of 197 Gigatonnes in July alone is enough to raise sea levels by half a millimeter.

Alaska is also on the front lines of climate change where July 2019 set a record for the state’s hottest month on record. Scorching temperatures illustrate that not only, are humans, for better or worse, making history but because sea ice in the Arctic is critical to life, we are witnesses to the first visible signs of a collapsing arctic ecosystem including gray whale, ice seal, salmon and reindeer die-offs.

Temperature also impacts arctic marine habitat through melting sea-ice. According to the National Snow and Ice Data Center, the July heat wave in Alaska contributed to continued melting of Arctic sea ice which reached a record low in July. According to the NSIDC, since 1979, September sea ice extent has declined 12.8 percent per decade.

Sea ice is critical to Pacific walruses who use it for resting between the search for food and for rearing their young. The Unprecedented loss of ice in the Chukchi Sea, this summer, however, once again, forced Pacific walrus to congregate on Alaska’s ice free northwestern coastlines and away from the important off-shore food-foraging areas.

While walrus, sometimes congregating in the tens of thousands, they have been hauling out on the beach at Point Lay, Alaska almost every year since 2007, due to the disappearance of their usual sea ice habitat. According to the U.S. Fish and Wildlife Service, thousands of walruses hauled out on the beach in late July – the earliest ever. The walrus congregations can number in the tens of thousands, with up to 40,000 animals estimated at a time.