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Climate Change Triggers Unexpected Transformation of Alaskan Rivers to Orange

Alaskan Rivers and streams are shifting from blue to orange due to toxic metals released by thawing permafrost.

Alaska Waterways Discoloring due to Thawing Permafrost, Study Finds

Rivers and streams in Alaska are shifting from blue to orange due to toxic metals released by thawing permafrost, a new study has shown.

Investigators from the National Park Service, University of California at Davis, and the US Geological Survey were startled by this discovery. The researchers noted that the waterways in Alaska’s Brooks Range had turned rusty and murky over the past decade. They confirmed these observations in a study published in Communications: Earth & Environment.

The researchers identified toxic metals such as iron, zinc, copper, nickel, and lead as the cause of the discoloration. These metals, which are harmful to river and stream ecosystems, are being released as the permafrost melts, exposing the waterways to minerals that have been underground for centuries.

Brett Poulin, a study co-author and professor of environmental toxicology at UC Davis, said, “This is a classic process that happens in rivers here in the continental US that have been impacted for over 100 years since some of the mining rushes in the 1850s. It’s very startling to see it when you’re in some of the most remote wilderness.”

Arctic Soils and Warming Climate

The study notes that organic carbon, nutrients, and metals such as mercury are naturally contained within the permafrost of Arctic soils. High temperatures have caused these minerals to mix with surrounding water sources as the permafrost melts.

Significantly, the Arctic is warming at a rate four times faster than the rest of the world, as studies have indicated. Poulin remarked, “What we believe we’re seeing is this thawing of soil that’s happening faster there than it would happen elsewhere. It’s really an unexpected consequence of climate change.”

Impact on Aquatic Life

The discoloration of these rivers has resulted in “dramatic declines” in aquatic life. This raises concerns about the future impact of continued permafrost melting on communities relying on these waterways for drinking and fishing.

Many fish critical for subsistence, sport, and commercial fisheries live in Alaska’s Arctic rivers, according to the researchers. Local communities began reporting their observations and concerns to the researchers approximately seven years ago.

Similar Impact in Other Regions

Alaska isn’t the only region undergoing this change. Similar effects have been observed in Colorado’s Rocky Mountains due to climatic warming, among other factors. Another study published by Water Resources Research reports increased concentrations of metals, such as sulfate, zinc, and copper, in 22 mountain streams in Colorado over the past 30 years.

Research on rising metal and rare earth element concentrations in mountain rivers and streams has been conducted in the Chilean Andes, the European Alps, and the Pyrenees in northern Spain.

While some of these regions have been exposed to mining sites, thus witnessing metal concentrations in their rivers and streams for years, the increased levels raise questions about the future climate change impacts on mountain water sources.

Research in Alaska will proceed in the next few years to establish the origin of the metal and mineral sources, and how they will affect aquatic and human life.

Original Story at www.cnn.com

Trending News

Mississippi River Faces Persistent Saltwater Intrusion, Region Seeks Long-Term Solutions



For the third consecutive year, the Mississippi River is experiencing significant saltwater intrusion, prompting local communities and environmental experts to search for sustainable solutions. This recurring issue arises as the river’s flow decreases, allowing saltwater to move upstream and threaten drinking water supplies. The U.S. Army Corps of Engineers is actively involved in addressing this problem, employing temporary measures like saltwater barriers to mitigate the impact on affected areas.



Saltwater infiltration poses serious risks to public health and agriculture, as freshwater sources become compromised. The situation is exacerbated by prolonged periods of drought, which have reduced freshwater flow in the Mississippi River. According to the National Weather Service, drought conditions have worsened due to climate change, increasing the frequency and severity of saltwater intrusion events.



Local authorities are collaborating with federal agencies to explore permanent solutions. Among the proposed strategies are enhanced levee systems and improved water management techniques. The U.S. Army Corps of Engineers is evaluating the feasibility of long-term infrastructure projects to prevent further saltwater encroachment. Additionally, community leaders are advocating for increased funding to support these initiatives and safeguard the region’s water resources.



The impact of saltwater intrusion extends beyond drinking water concerns, affecting local ecosystems and agricultural productivity. Farmers in the region have reported crop damage due to elevated salinity levels in irrigation water. The Natural Resources Conservation Service is working with farmers to implement adaptive practices, such as planting salt-tolerant crops and improving soil management techniques.



As the Mississippi River continues to face challenges from saltwater intrusion, stakeholders emphasize the importance of collaborative efforts and innovative solutions. The ongoing threat underscores the need for comprehensive planning and investment to protect one of America’s most vital waterways from the impacts of climate change and environmental stressors.

November 19, 2024



Environmental activists have raised concerns over the fossil fuel sector’s significant impact on COP29, the latest United Nations Climate Change Conference. Activists argue that the industry’s presence diverts focus from critical climate actions.



The conference, designed to promote global climate agreements, faces criticism for allowing fossil fuel companies to participate extensively. Environmental groups claim these companies undermine efforts to reduce carbon emissions and transition to renewable energy sources.



According to Climate Action Network, fossil fuel representatives have increased their lobbying activities, aiming to weaken climate policies. These industries allegedly influence negotiations, leading to watered-down commitments that fail to address the urgency of climate change effectively.



Experts suggest that the influence of these companies stems from financial contributions and longstanding relationships with decision-makers. Critics argue that this affects the conference’s ability to enforce meaningful climate change regulations.



During the event, several protests highlighted the need for transparency and a stronger focus on sustainable energy solutions. Activists are calling for increased participation of renewable energy stakeholders in future conferences.



The controversy surrounding fossil fuel involvement at COP29 underscores the ongoing challenge of balancing industrial interests with the global imperative to combat climate change.



November 19, 2024