Articles tagged with Arctic Ecosystems
A study found six Alaska rivers' water chemistry changed due to thawing permafrost, releasing iron, sulfuric acid, and other metals. The effects were observed 60 miles downstream, with metal concentrations 70 times higher than in pristine areas.
The 'Lost Lakes' database provides real-time information on Arctic thermokarst lakes, enabling local communities to monitor changes in permafrost landscapes and respond effectively. Since 2016, around 10,000 lakes have lost significant areas or disappeared, with significant seasonal fluctuations.
Canada's last epishelf lake, a millennia-old ecosystem, has been confirmed to be gone for good. The loss of the lake shows that even the Arctic's projected last ice refuge is vulnerable to rapid change, and that once this ecosystem is lost, it cannot be restored.
The Arctic Report Card will continue under its independent editorial team with new support from the American Geophysical Union, ensuring a scientifically rigorous product. The report's release is planned for AGU's Annual Meeting in San Francisco, with the full 2026 report to be hosted permanently online.
Research team led by University of Zurich found Arctic fires occurred 2.5 times more often in lit areas associated with human activity than in climatically similar unlit areas. Effective fire prevention and response can help reduce risks extending far beyond the Arctic.
Researchers discovered that significant amounts of terrestrial carbon are stored in the seabed, with microorganisms preferring fresh marine carbon over ancient terrestrial sources. This knowledge is essential for assessing the climate impact of thawing permafrost and its effects on atmospheric greenhouse gas levels.
Arctic Ocean 2050 brings together over 500 researchers and advanced technologies to generate fundamental and applied knowledge. Paul E. Renaud, new program director, will lead the initiative from October 2026, focusing on balancing conservation with resource use.
The Arctic river deltas store a significant amount of carbon, with 57.5 gigatonnes stored in just 1% of the global permafrost surface. Climate change is destabilizing these regions, causing thawing and releasing more carbon into the atmosphere.
Two University of Utah-led studies aim to improve biomass mapping to better understand how Arctic and boreal forests respond to climate change. The new maps, built using satellite imagery and field measurements, capture 40 years of ecological change in unprecedented detail.
Research finds Gentoo penguins in Argentina adjusting their breeding schedule to avoid extreme heat events, minimizing mortality. The study, published in PLOS One, reveals a positive adaptation to climate change.
Researchers from Colorado State University are investigating the effects of rain falling on snow in the Arctic, which can influence animal behavior and habitat quality. They aim to develop a snow modeling tool to better predict changes to the environment and support decision-making for communities that rely on wildlife.
Researchers used seafloor video and audio monitoring to capture rare phenomena in a Greenlandic glacial fjord, including fish swimming backwards and making sudden appearances of deep-sea dwellers. The study also revealed the presence of narwhals near the surface, providing new insights into the Arctic ecosystem.
Researchers use tree rings and satellites to date changes beavers make to the tundra landscape as they spread northwards. The study provides evidence of beaver colonization in the region starting in 2008, with satellite analysis revealing a significant expansion of surface water between 2015 and 2019.
A new atlas reveals significant overlaps between Arctic oil and gas development and Indigenous Peoples' Lands, ecologically sensitive areas, and key Arctic species. The study highlights potential ecological disruption and social tension in heavily-exploited regions.
Researchers have discovered high levels of forever chemicals like PFAS in Svalbard reindeer, while toxic metals such as cadmium and lead have shown a decrease. The study suggests that PFAS levels have skyrocketed over the past decade, with implications for human consumption of the animals.
Recent ESA research studies explore supply and demand of bird migration routes, scavenging by mid-sized carnivores, and polar bear adaptation to a thawing Arctic. A new metric compares bird demand with habitat supply to assess stopover sites along migratory routes.
A new study reveals that protecting polar bear habitat naturally safeguards the resources they rely on to survive, providing critical benefits to the ecosystem. By analyzing tracking data from 355 bears, researchers identified a high-use area near Cape Churchill, Manitoba, highlighting it as a prime location for a Marine Protected Area.
Researchers analyzed 11,000-year-old bowhead whale fossils to reveal the devastating impact of commercial whaling on the species' genetics. The study found that genetic diversity will continue to decline, severely impacting the species' resilience to climate change.
Svalbard's polar willow plant community, a critical food source for reindeer, was found to be resilient to icing due to consistent production above-ground during summer warming. The study suggests that even with extensive winter ice encasement, some plants can thrive through increased above-ground production and seed dispersal.
New research confirms Arctic peatlands are expanding due to rising temperatures, with some areas growing by over a metre a year. The expansion is likely to store more carbon, which could help slow climate change.
Researchers have catalogued 2554 non-native plant species that may pose a threat to Arctic biodiversity. The study used data from over 51 million occurrences of these species to create a map highlighting hotspot areas in the region.
The Arctic is experiencing a rise in human-generated underwater noise due to melting ice and increased activity, disrupting wildlife and local communities. A new study from the University of Bath provides a clear framework for monitoring noise in Arctic waters, urging authorities to revise thresholds used to assess noise levels.
A new study reveals how beluga whales in Alaska's Bristol Bay survive through a surprising strategy: they mate with multiple partners over several years. This polygynandrous system helps maintain genetic diversity despite the population's small size and isolation.
Wildfires on Alaska's North Slope have reached unprecedented levels in recent centuries, driven by drying soils and expanding woody shrubs. The study's findings suggest a rapid transformation of the tundra ecosystem, with modern-day fires burning hotter and consuming more fuel.
A new study found that rising temperatures are driving changes in polar bear DNA, which may help them adapt to increasingly challenging environments. The researchers discovered that genes related to heat-stress, aging, and metabolism are behaving differently in polar bears living in southeastern Greenland.
Recent research articles explore innovative methods for rehabilitating coral reefs, new observations of masquerading behavior in deep-sea squids, the rapid expansion of Sphagnum peat patches across Alaska's North Slope, trade-offs between protected areas and sustainable development goals, and a surprising first-time observation of moth...
Professor John Smol of Queen's University is being honored for his groundbreaking contributions to identifying stressors of environmental change in the Arctic. He has developed tools for detecting environmental shifts in freshwater and terrestrial ecosystems, providing key insights into the impact of global warming and human activities.
Research from ESA's journals reveals that tiger populations are limited by prey scarcity, not protection. Invasive grasses also boost tick survival in Florida's longleaf pine forests.
A new study reveals that 16% of the Arctic Ocean's dissolved organic carbon comes from land, primarily from thawing permafrost and coastal erosion. This finding has significant implications for understanding how terrestrial organic matter affects Arctic marine ecosystems and the ocean's ability to store CO2.
A remotely operated vehicle (ROV) in the Western Weddell Sea uncovered extensive maintained fish nesting grounds, revealing patterns and organization, which are thought to be a survival strategy. The discovery provides critical insights into Vulnerable Marine Ecosystems and their importance for biodiversity.
A new study reveals that polar bears act as crucial providers for Arctic species, leaving behind millions of kilograms of prey annually. This carrion provides a vital energy source for a wide network of arctic scavenger species, including Arctic foxes and ravens.
A recent study by University of Oulu researchers reveals significant shifts in Arctic tundra vegetation, with crowberry expansion and bilberry decline dominating the region. This long-term trend is likely linked to climate change and extensive reindeer grazing, which suppresses taller shrub growth.
As Arctic permafrost thaws, geochemical reactions unleash metals like cadmium, harming fish and disrupting ecosystems. The Salmon River's transformation poses indirect threats to Indigenous communities and other species.
A study found that Finnish moth communities are becoming increasingly dominated by warm-adapted species, while cold-adapted species in the north face rapid declines. This thermophilisation is driven by local disappearance of cold-adapted species, with southern Finland experiencing an influx of new warm-adapted species.
Research finds Arctic peatlands expanding due to warming climate, with 16 sites showing strong evidence of expansion. Peatlands store about 600 billion tons of carbon, and their expansion could slow climate change but also poses risks if temperatures continue to rise.
International collaborations leveraging MBARI’s expertise and advanced technology better understand polar environments, including the Arctic seafloor and Southern Ocean. Researchers study seafloor processes, carbon and climate, and biodiversity in these regions.
Researchers found a total of 2,829 genetically defined species, with bacteria richness being 10.3 times greater than eukaryotes. The study revealed previously unknown associations between bacteria and eukaryotes, suggesting novel mutualisms that may promote nutrient exchange.
The observation pyramid uses different robot platforms to survey ocean areas, enabling flexible task management. Autonomous robotic organizations will reduce costs, improve mission efficiency and increase system robustness.
The Arctic Great Rivers Observatory, a multinational project founded at the Marine Biological Laboratory, has been recognized as a National Champion by the Frontiers Planet Prize for its publication on recent trends in the chemistry of major northern rivers. This recognition highlights the value of sustained international collaboration...
A new study found that climate change may undermine the capacity of Arctic fjords to serve as effective carbon sinks, leading to a decline in sequestration carbon. Rapid changes are transforming fjord ecosystems, with phytoplankton communities shifting due to melting ice and warmer waters.
A new study provides unprecedented light on the Transpolar Drift's transport system and factors controlling its dynamics. The findings indicate that warmer temperatures could increase the spread of human-made pollutants in the Arctic.
A recent study warns that climate change is creating new pathways for the spread of infectious diseases like brucellosis and E. coli in the Arctic, due to melting permafrost and increased human activity. The thawing of soil frozen for thousands of years could unlock dormant microbes with pandemic potential.
A multidisciplinary survey in the eastern Indian sector of the Southern Ocean found that the southern boundary of the Antarctic Circumpolar Current has shifted southward, causing a change in water temperature and mac zooplankton composition. The survey also estimated the biomass of Antarctic krill in the area, with comparable results t...
Researchers developed a method that uses high-resolution satellite imagery and deep machine learning to double the mapped infrastructure of Alaska, more accurately projecting economic risks associated with permafrost thaw. The new model nearly doubles the amount of information available for Alaska on OpenStreetMap.
The ARRAKIS project team aims to understand how microbial life thrives in extreme environments by studying the Great Kobuk Sand Dunes in Alaska. Researchers will use Raman spectroscopy and gas chromatography/mass spectrometry to identify and quantify organic compounds and measure ATP and total DNA.
Climate change impacts Arctic coastal ecosystems through melting glaciers, altering kelp growth and elemental composition. Kelps are highly susceptible to changes in run-off intensities, leading to increased metal concentrations and negative ecological consequences.
A new study combines satellite collar data with specialized cameras to shed light on the mysterious and important stage of maternal denning. The researchers found that using both methods can accurately predict when polar bears will emerge from their dens and how external factors like temperature influence their behavior.
Researchers capture narwhals using their tusks to investigate, manipulate and influence the behavior of Arctic char fish. The study reveals first evidence of likely play, social learning and personality differences among individual narwhal.
A new study reveals detailed insights into polar bear denning behavior, showing altered emergence periods and variable den presence. The research highlights the importance of protecting denning areas to ensure cub survival and species conservation.
A new study by Connecticut College reveals that palm trees once thrived in subarctic Canada during the late early Eocene, approximately 48 million years ago. This finding indicates a warmer climate with ice-free winters, unlike previous assumptions.
Researchers discovered that Arctic glaciers are leaking significant amounts of methane through the 'glacial fracking' process. This previously unrecognised process could contribute to Arctic climate feedbacks and accelerate global warming.
A new study published in Nature Communications Earth and Environment finds that Arctic cyclones may contribute to the underpredicted decline of sea ice extent. The research suggests two theories: turbulent seas breaking up larger ice floes and upwelling increasing temperatures that help melt younger, thinner ice.
The FAU-designed autonomous observation platform system offers a comprehensive approach to studying the Arctic environment and monitoring the impact of melting sea ice. The system integrates with the environment it monitors, providing new data on Arctic Sea ice melt beyond what satellites and manned ships can provide.
A new review paper warns of the devastating impacts of a 2.7°C global warming on the Arctic region, including sea-ice-free summers, accelerated melting of glaciers, and widespread permafrost loss. The authors urge individuals to take responsibility for mitigating these changes.
A small amount of Arctic groundwater releases an estimated 230 tons of organic carbon per day along Alaska's coastline, contributing to climate change and ocean acidification. This discovery highlights the significant role of freshwater discharge in the Arctic Ocean.
Borealis Mud Volcano provides a hard substrate for various species like anemones and octocoral colonies, sustaining local fish populations. The volcano's carbonates also offer shelter and feeding opportunities.
A new study found that 34% of the Arctic-boreal zone is now a source of carbon, with fires and microbial activity contributing to emissions. The research provides a comprehensive assessment of carbon fluxes in the region, highlighting the importance of monitoring these processes.
The review highlights seven zoonotic infections in people, including those transmitted through traditional diets and hunting practices. Climate change is affecting the local ecosystem, altering animal behavior and parasite life cycles, posing a risk to vulnerable populations.
A new study reveals the Arctic is experiencing extreme climate changes, with Siberia and Alaska facing significant warming and drying. Permafrost is a common factor in vulnerable regions, and local data can support more effective management and adaptation approaches.
A team of researchers from the Alfred Wegener Institute analyzed aerial survey data showing a marked decrease in Arctic pressure ridges north of Greenland and in Fram Strait, declining by 12.2% per decade. The study found that the frequency and height of pressure ridges are decreasing due to the dramatic melting of older ice.