Articles tagged with Arctic Ecosystems
A new study using satellite images tracked the Arctic tundra's vegetation changes over decades and found it has become greener due to warmer air and soil temperatures. This 'Arctic greening' is associated with higher soil temperatures and moisture, impacting local ecosystems and wildlife.
New research estimates that mercury concentrations in fish and water of the Yukon River could double by 2100 under a high emissions scenario. If greenhouse gas emissions are not constrained, mercury concentrations may exceed EPA criterion by 2050, with significant impacts for the environment and global climate.
Research reveals Arctic mosquito populations are driven by food quality rather than predator density, contradicting initial hypotheses. The study found that ponds with better food quality had lower population growth rates and higher larval mortality.
St Petersburg University scientists analyzed microgastropods in the eastern sector of the Arctic, discovering at least 66 species. The study helps understand biological diversity, ecosystem responses to climate change and environmental pollution.
Phytoplankton blooms have drastically altered the Arctic's ability to transform atmospheric carbon into living matter, with net primary production increasing by 57% between 1998 and 2018. The surge in phytoplankton biomass may represent a significant 'regime shift' for the Arctic ecosystem, with implications for food supply and carbon ...
New research reveals that Arctic shrub communities can release stored carbon from soils, offsetting potential carbon sequestration. This could lead to a net source of CO2 in the atmosphere if not addressed.
New research from San Diego State University reveals that spring snowmelt in the Arctic triggers fresh carbon dioxide production at higher rates than previously assumed. The study found that cold thaw accounts for nearly half of carbon emissions, offsetting summer uptake by vegetation.
Researchers at University of Alaska Fairbanks found that seismic surveys can cause long-lasting scars on the tundra, affecting its hydrology and habitat. The study emphasizes the need for more data on seismic exploration impacts and better weather records to minimize damage in the Arctic Refuge.
The ECOTIP project aims to advance understanding of the impacts of climate change on Arctic biodiversity and its cascading effects on marine ecosystems and human societies. The four-year initiative will conduct pioneering assessments of changes to Arctic marine ecosystems and societies, from melting ice to shifting fisheries.
Researchers found that plants on Svalbard grow in synchrony due to July temperatures, reflecting climate change. Tiny growth rings of the polar willow shrub show distinct patterns, allowing scientists to track growth and understand ecosystem dynamics.
Available data indicate heavy metal levels in some Alaskan soils often exceed average US levels, with critical gaps in monitoring due to limited publicly available data. The study highlights the need for further sampling near human populations and in permafrost-heavy regions to clarify exposure risks.
Researchers at UNH found that forest fires in the Arctic can significantly impact stream chemistry, altering nutrient levels and potentially harming humans who depend on these waterways. The study showed that aftereffects of a burn can last up to five decades, with decreased carbon and increased nitrogen affecting local streams.
Researchers have assessed the diversity of freshwater molluscs in the Circumpolar region, finding 104 species. They attribute their ability to survive in the Arctic to biological traits such as hermaphroditism and air travel.
Scientists use artificial intelligence to analyze millions of medical journal articles for COVID-19 connections, while researchers also explore Arctic plant growth rules and develop a new solid-state electrolyte for lithium metal batteries.
A new study suggests that reducing CO2 emissions rapidly could lead to ice-free years in the Arctic, occurring only occasionally. The research indicates that humans can still determine how often the Arctic Ocean will be ice-free, depending on future emissions levels.
A new study finds that freshwater runoff from rivers and shelf sediments are bringing significant quantities of carbon and trace elements into the Arctic Ocean. This increase in nutrients may boost Arctic marine productivity, but also exacerbates climate warming.
A new study by FSU researchers reveals that groundwater flows on top of frozen permafrost are a significant source of dissolved organic matter entering Arctic coastal waters. This ancient carbon is transported to the ocean without decomposition and provides a new food source for local coastal ecosystems.
Researchers found that groundwater flowing from frozen permafrost carries significant concentrations of carbon and nutrients to Arctic coastal food webs. The discovery suggests a new and potentially important source of fuel for local coastal ecosystems.
New research from McGill University predicts a significant increase in Arctic sea ice movement by mid-century, leading to more widespread pollutant transport between neighboring countries. Thinner, faster-moving ice can carry pollutants and microplastics, posing a threat to Arctic waters.
Researchers at Kazan Federal University developed a new, water-soluble reagent based on sulfonated chitosan to inhibit methane hydrate formation and corrosion. The biodegradable inhibitor is also eco-friendly, cheap, and non-toxic.
A year-round acoustic study in the northern Bering Sea recorded over 30,000 calls from whales, walruses, and seals, providing valuable insights into climate change's effects on these species. The study supports previous scientific knowledge with a finer-scale resolution, revealing consistent seasonal distribution and movement patterns.
Researchers discovered that fungi associated with shallow-rooted tundra shrubs can access deep nitrogen stores from thawing permafrost, regardless of the plant's root system. This finding has implications for understanding the fate of nitrogen in a warming Arctic and potentially offsetting carbon losses.
Researchers have found that Svalbard reindeer populations have recovered enough to recolonize virtually all non-glaciated areas in the archipelago. The population now numbers around 22,000, a significant increase from pre-hunting levels. Protection implemented in the 1920s has enabled the animals to thrive and expand their habitats.
The George Mason University team will examine the impact of increasing traffic and industrialization in the Arctic on its infrastructure and governance. The five-year project aims to understand the environmental and social implications of a significant increase in people, shipping, and infrastructure needs.
A study published in PLOS Biology found that 2018's record-breaking snowfall led to a reproductive failure across Arctic ecosystems. This event highlights the devastating effects of climate variability and extreme weather events on Arctic species.
According to a study published in Global Change Biology, the breeding season of some Arctic seabirds is shifting earlier due to global warming. The study found that surface-feeding seabirds in the north Pacific Ocean are moving their breeding season about ten days before the rest of species over the last thirty-five years.
A team of researchers led by Penn State's Ming Xiao is studying the effects of permafrost degradation on Alaskan communities and the world. The project aims to understand how ground changes, infrastructure, and social systems interact as temperatures rise.
A two-year project will study the effects of climate change on the Arctic ecosystem, focusing on Western Siberia's Yamal Peninsula. The research will document changes to ecosystems, habitats, and indigenous communities.
A study using Arctic ice cores shows that lead pollution levels correlate with economic growth and decline, indicating the impact of European events on the environment. The research found exponential increases in lead pollution during the past 1,500 years, with a significant decrease since the passage of pollution abatement policies.
A study on Arctic lead pollution reveals a significant increase in emissions from European industries during the Middle Ages, coinciding with technological advancements and economic growth. The pollution level declined substantially after pollution abatement policies were enacted, but still remains much higher than historical levels.
A recent study led by University of Maine researchers found rapid and strong environmental changes in West Greenland's Arctic ecosystem. The research team discovered a tight coupling between climate shifts and environmental responses, including increased ice sheet discharge and advanced plant phenology.
An international team led by Laura Epp is analyzing ancient DNA from sediment cores, current ecological data, and anthropological studies to understand the interplay between climate change, grazing, and tundra vegetation. The project aims to generate scenarios for future ecosystem changes and develop solutions for local communities.
A new Dartmouth-led study updates the geological record of the Arctic Ocean, revealing that parts of Alaska's Brooks Range were likely transported from Greenland. The research provides clues into the region's natural resources and could help revise predictions about oil, gas and mineral wealth.
Researchers reconstructed past moisture conditions and vegetation histories to understand how Arctic wetlands have responded to warming temperatures over the last century. The study found that under certain conditions, Arctic wetlands may transition into peatlands, creating new natural carbon storage systems.
Researchers found that salt migration into thawing permafrost accelerates gas hydrate dissociation and releases methane. This discovery explains the massive methane emissions from the East Siberian Arctic Shelf.
A new study reveals that Arctic warming will increase the economic impact of climate change, with estimated costs of $70 trillion and $25 trillion under different scenarios. The research suggests that proactive mitigation measures are necessary to keep global temperature rise below 2C.
A new study combines physical and biological climate indicators to show that Arctic air temperatures are driving major changes in the region's systems. The research highlights the interconnectedness of various components, including sea ice, permafrost, and ecosystems.
New study reveals extreme scale of sea-ice melting in Arctic, with only 20% of young ice reaching Transpolar Drift. This reduction affects nutrient and sediment transport, potentially impacting ecological processes and biogeochemical cycles.
Researchers have identified a potential economic opportunity for Greenland by exploiting its abundant river sediment, which has a market value equivalent to half of the country's GDP. Sand export could provide a new revenue stream, but it would require careful assessment of environmental impact and collaboration with local authorities.
A new mathematical model predicts a 50-99% decline in ringed seal populations by 2100, primarily driven by insufficient snow on the ice. This decline will lead to smaller juvenile populations and reduced survival rates for adults.
A recent study led by UNIST researchers suggests that local greenhouse gas concentrations, rather than global processes, are driving the amplified warming in the Arctic. The findings indicate that regional factors such as carbon dioxide forcing and polar feedbacks play a more significant role than previously thought.
Researchers discover coralline red algae fossils dating back 430 million years, challenging current classification. This finding sheds new light on the development of these algae, which play a crucial role in ocean ecosystems.
Researchers identified two new fungal species, M. hoshinonis and V. ellesmerensis, in a rapidly melting Arctic glacier. The discoveries highlight the critical role fungi play in decomposing organic material and could have catastrophic effects if glaciers melt due to climate change.
A new study reveals major challenges in incorporating traditional knowledge into Atlantic salmon governance in Norway and Finland. The authors argue that unrealistic international expectations and local legitimacy issues hinder the successful integration of Sámi knowledge with science.
Researchers found that warmer winters mean more ice on the ground due to increased winter rain, posing challenges for Arctic wildlife and ecosystems. The formation of basal ice can kill plants and starve animals, while rain-on-snow events can lead to avalanches.
New research reveals record amounts of mercury released into waterways through thawing permafrost, contaminating downstream ecosystems. Climate change exacerbates the issue, highlighting the need for further study on mercury cycling and its impact on Arctic food webs.
A new study warns that 70% of current Arctic infrastructure is at risk from thawing permafrost within the next 30 years. The projected impacts could lead to major ecosystem disruption and adverse effects on energy supplies, national security, and economic activity.
A study analyzing population data over 70 years found that climate change is responsible for a substantial decline in shorebird populations. Rates of daily nest predation have increased threefold in the Arctic and doubled in the North Temperate Zone, leading to devastating effects on population numbers.
Research suggests that reduced Arctic snow cover due to climate change poses a significant threat to the region's biodiversity. Many plant species rely on snow cover for survival and are already endangered, making conservation efforts crucial. The study highlights the importance of addressing climate change to preserve northern nature.
New research reveals Arctic phytoplankton blooms are expanding northward at a rate of 1 degree of latitude per decade. The decline in sea ice creates open water areas where phytoplankton can thrive, leading to increased primary productivity and potential changes to the food web.
A new collection in PLOS Biology explores the challenges of using stories to communicate scientific evidence around climate change, highlighting the need for accurate narrative without sacrificing scientific accuracy. The collection features articles on strategies for climate communication, storytelling frameworks, and the importance o...
A new study found that while polar bears relied on whale carcasses in the past, this resource will not be enough to sustain most bear populations in the future due to climate change. The Arctic is expected to become ice-free by 2040, making it difficult for bears to find alternative food sources.
Researchers found a small ice-free 'polynya' in the Arctic that sustained microscopic marine life for at least 5,000 years. This discovery provides insight into how marine ecosystems adapted to extreme climate conditions during the last Ice Age, highlighting their vulnerability and resilience.
New research reveals Arctic plant height increased by 20-60% over 30 years, with non-native species like vernal sweetgrass spreading into the region. Soil moisture plays a crucial role in changing plant traits, contrary to previous climate change models.
A study by Zicheng Yu of Lehigh University aims to understand the dynamics of peatlands in the Arctic Tundra and their role in mitigating climate change. The research will investigate the formation, distribution, and dynamics of peat patches in the Arctic Tundra and assess their implications for global carbon storage capacity.
Researchers have developed a new approach to predict how plants in Arctic regions respond to warming, revealing that 16% of vegetated land is no longer temperature-limited today. By the year 2100, only 20% of vegetation will be limited by cold conditions.
A Dartmouth study found that Arctic mosquito populations depend on aquatic habitats and blood meal availability. The research indicates that female mosquitoes carrying eggs were most abundant near ponds in areas frequented by animals.
Warming alters Arctic tundra ecosystems, with wolf spiders affecting herbivores and soil animals; Collembola populations decline under warm conditions, while decomposition slows.
New research from Washington University in St. Louis found that warming conditions can alter the way wolf spiders interact with their prey, including springtails and fungi, leading to changes in ecosystem processes like decomposition. This shift could potentially alleviate some impacts of global warming on carbon losses from the tundra.
Barnacle geese accelerate their 3,000-kilometer migration in response to rising Arctic temperatures. However, the birds' early arrival is often offset by a recovery period that delays egg-laying, resulting in reduced gosling survival rates.