Articles tagged with Arctic Ecosystems
A comprehensive review study found that only two research stations account for 30% of cited studies in the Arctic region. The researchers highlight under-sampling of rapidly warming sites, particularly in the Canadian high-Arctic archipelago and Russia's Arctic coastline.
A recent study published in the Proceedings of the National Academy of Sciences found that narwhals, beluga, and bowhead whales are most vulnerable to vessel traffic in the Arctic. The researchers identified two 'pinch points' where ships and animals are most likely to intersect, including the Bering Strait and Lancaster Sound.
Research tracked changes in Arctic arthropod populations in response to warming temperatures, finding more plant-eating and parasitic insects, and fewer detritivores. The study suggests that water availability will play a key role in determining which bug species can thrive in a warming Arctic.
The Fifth International Symposium on Arctic Research was the largest of its kind held in a non-Arctic country, attracting 344 participants from 18 nations. Researchers discussed global warming impacts, climate change effects, and new research projects such as MOSAiC.
A shift in western Arctic wind patterns occurred during the winter of 2017, with sea ice movement also changing. This anomaly is possible indicator of a changing climate, with potentially significant impacts on Arctic ecosystems and food webs.
A recent study found that polar regions are experiencing earlier springs, with advances of up to 16 days earlier than a decade ago. This is attributed to rapid springtime warming at higher latitudes, which has significant implications for migratory bird species and their habitats.
A new analysis found that subsistence harvesting by indigenous people has a positive association with caribou numbers, contradicting previous speculation. The study's results suggest that government controls on indigenous caribou hunting may not be necessary and highlight a 'science-policy gap' in U.S. and Canadian governments
A new review assesses the microbial degradation potential in Arctic seas, highlighting six factors challenging oil-eating microbes, including low temperatures, sea ice, and nutrient-poor environments. The research reveals that these factors can slow down biodegradation and reduce the efficiency of microbial degradation.
New research finds that beluga whales are diving deeper and longer to find food as sea ice loss changes their Arctic habitat. The whales' diving behavior has increased significantly over nearly two decades, with dives lasting up to 3 times a day and depths reaching 64 meters.
Researchers have discovered a surge in radium-228 levels in the central Arctic Ocean, indicating large-scale changes along the coast. The team suspects that melting sea ice has stirred up sediments, releasing radium into the ocean, which could have significant impacts on Arctic food webs and animal populations.
A recent study calls for the expedited sampling and digitizing of Arctic specimens on an international scale to fill gaps in biological diversity. The goal is to develop a comprehensive and accessible collection that can be used by researchers, educators, and the public to tackle conservation problems and promote STEM education.
A decade-long study in Antarctica's Dry Valleys reveals that an extreme melt season triggered changes in physical and biological characteristics, including increased soil species and population increases. The findings suggest that abrupt climate events can cause long-term alterations in polar ecosystems.
A 2002 extreme melt season triggered long-term ecological changes in Antarctica's McMurdo Dry Valleys, altering the trajectory of an ecosystem over several years. The study highlights the importance of decadal data records in understanding how organisms respond to abrupt climate events.
A new study by UMass Lowell researchers has identified gaseous mercury as the major source of pollution in the Arctic tundra. The findings reveal that airborne mercury is gathering in the region's soil and ultimately running off into waters, posing a significant threat to human health and wildlife.
Research by Jin-Soo Kim and Professor Jong-Seong Kug found that warmer Arctic temperatures trigger cooler winters and springs in North America, weakening vegetation growth and lowering carbon uptake capacity. This can lead to greater damages to ecosystems due to cold and dry spells.
A study led by Lindsey Rich demonstrates that camera traps are an effective method for collecting data on species populations. The research found that prey availability can determine carnivore distributions, while human development and influence also impact population sizes.
Eric Palm, a University of Montana doctoral candidate, has received the NASA Earth and Space Science Fellowship to study animal movement using ecosystem-scale models for caribou. The research aims to understand consequences of land-use and climate change on caribou habitat and populations in the arctic-boreal region.
Climate change is causing Arctic river ice deposits to melt nearly a month earlier than they did 15 years ago, with most icings disappearing 26 days earlier in 2015 than in 2000. This rapid decline could have significant impacts on Arctic river ecosystems.
Researchers found Arctic soils are sensitive to climate change, with warming temperatures increasing microbial growth and respiration rates. This may lead to enhanced CO2 emissions and increased nutrient availability, potentially altering the delicate ecosystem.
Researchers from Harvard SEAS developed a mathematical model explaining the emergence of phytoplankton blooms under Arctic sea ice. The study found that thinning ice and increased melt ponds allow more sunlight to penetrate, creating conditions favorable for plankton growth.
Climate scientist Michael Rawlins will study the impacts of climate change on coastal lagoons and rivers in northern Alaska. The five-year project aims to understand changes in carbon and nutrient content and their effects on ecosystem dynamics.
A study in Greenland found that warming winters are causing plants to emerge earlier, while others are delaying their growth. This rapid change has significant implications for the Arctic ecosystem, including affecting caribou populations.
A new study reveals that residential heating and transport are major sources of black carbon in the Russian Arctic, with an estimated 35% and 38% contribution respectively. This finding highlights the importance of reducing black carbon pollution in the region to mitigate climate change.
A new analysis reveals that polar bears are at risk from Arctic pollutants, with the risk being 2-3 orders of magnitude higher than safety thresholds. International control measures have reduced risks for bear cubs, but new contaminants pose a growing threat to the ecosystem.
A new species of bird, Tingmiatornis arctica, has been discovered in the Canadian Arctic, dating back to approximately 90 million years ago. The fossil finds reveal a hyper-warm interval during the late Cretaceous period, with conditions allowing large birds to thrive.
Researchers measured significant spring pulses of greenhouse gases in the Arctic during thaw, revealing that the region may not be as effective at absorbing CO2 as previously believed. The study's findings suggest that climate change could lead to more frequent and intense emissions, which could offset the Arctic's role as a carbon sink.
A recent study found enhanced nitrous oxide emissions in Arctic soils under field warming conditions, with hampered plant growth playing a key role. The study highlights the potential for even mild air warming to trigger greenhouse gas production at depth.
A new study by McGill University reveals that economic transitions, social shifts, and climate change are dramatically affecting the safety of Inuit during Arctic activities. The research connects life-endangering events to increasing costs of harvesting and travel, changing technology, and shifts in Indigenous knowledge.
New study reveals Arctic algae play a crucial role in the ocean's food web, with species at great depths relying on carbon from these algae. The decline of Arctic sea ice could have significant impacts on marine life, including fish, seals and polar bears.
Soil moisture levels in the Arctic play a crucial role in determining carbon emissions as temperatures rise. A recent study found that dry soils release significantly more carbon than wet soils, even accounting for methane production.
A NASA study has found that nearly a third of the land cover in the Arctic is turning green, with western Alaska and Quebec experiencing significant changes between 1984 and 2012. The study used high-resolution Landsat data to track vegetation trends across a 4.1 million square-mile area.
Increased Arctic vegetation may counteract global warming by reducing decomposition and releasing stored carbon, according to a Lund University study. The study found that warmer temperatures trigger bacteria and fungi to break down nutrient-rich shrubs rather than moss, leading to reduced soil nitrogen.
A US study has found that nearly one-quarter of sites across the US are threatened by high levels of atmospheric nitrogen pollution, leading to a loss of plant species richness. The research highlights the vulnerability of grassland ecosystems to nitrogen pollution, particularly those with acidic soil.
The NSF has awarded a $5.9 million grant to develop and curate the NSF Arctic Data Center, a repository for Arctic scientific data preservation and discovery. The center will offer features like search filters, map-based overview, and seamless data uploading, supporting open, reproducible science in the Arctic.
The Arctic region is reacting quickly to climate changes, impacting global systems. Research priorities focus on exploring the Arctic's role in the global climate system, improving climate models and forecasts, and understanding the environment's vulnerability.
Beluga whales have been found to dive to depths of up to 900 meters to maximize their encounters with prey, such as Arctic cod. This study provides a comprehensive analysis of beluga migration and feeding patterns in the Arctic, shedding light on the impact of climate change on these elusive marine mammals.
The Arctic Report Card 2015 reveals a warming trend with air temperature 2.3 degrees above average, sea ice extent at its lowest record since 1979, and significant melting on the Greenland ice sheet. Fish and walrus are adapting to the changing climate by moving north in search of new habitats.
Researchers at the Alfred Wegener Institute found that a 15-year observation series reveals how sensitive arctic marine ecosystems are to change. The study indicates that even a short-term influx of warm water can fundamentally impact local symbiotic communities, leading to changes in deep-sea life.
A new study predicts that parts of the Arctic Ocean will see at least 60 days a year of open water by the 2050s. Researchers used climate simulations to investigate local impacts of open water expansion patterns in the Arctic, finding that many sites will have more than 100 additional days of open water by then.
Researchers discovered a world of biological activity beneath the Arctic's polar night, with diverse species reproducing and thriving in the darkness. The findings raise questions about how marine species adapt to the changing climate and highlight the importance of this period for ecosystem reproduction.
A Dartmouth College study found that Arctic mosquitoes are thriving under climate change, emerging earlier and growing faster due to warmer temperatures. This boosts their population, threatening caribou and other wildlife, with a predicted 53% increase in survival probability by 2°C warming scenario.
Researchers at the Marcell Experimental Forest in Minnesota are conducting unprecedented whole-ecosystem manipulation to study peatlands' response to increased temperature and elevated carbon dioxide. The goal is to understand how peatlands react to various warming conditions and their impact on the global carbon cycle.
A recent Arctic tundra study found that climate warming is driving dramatic changes in the region's vegetation, with shrubs growing more in warmer temperatures. This increase in shrub growth can lead to more warming in tundra ecosystems and globally.
Scientists will measure trace gas concentrations, aerosols, and cloud properties in Alaska's North Slope to improve estimates of carbon emissions. The goal is to reduce uncertainty in global climate simulations and projections.
A recent multinational study assesses the impact of Arctic sea ice decline on 11 marine mammal species, including seals, walruses, and polar bears. The research highlights the critical role of sea ice in their habitats, revealing changes in population trends, feeding patterns, and behavior.
Scientists propose whitening Arctic Ocean to restore sea ice, but research shows it would not effectively cool the climate or prevent methane release. The study found that ocean whitening could lead to wetter and milder winter conditions in some regions.
A McGill research team identified over 460 Arctic beetle species, showing clear differences in feeding habits and ecological roles along latitude gradients. This suggests that beetles may quickly reflect changes in climate on soil, plants, and animals.
A team of scientists developed a model to quantify the effects of plant biodiversity loss on ecosystem productivity, finding that conserving species diversity can help maintain ecosystem services. The study provides new insights into the relationship between biodiversity and ecosystem functioning.
Researchers at LUT reduced welding groove angle from 45 to 30 degrees, increasing productivity and reducing additives and mistakes. The new method results in lighter, thinner, and more durable structures with improved environmental friendliness.
A new study reveals that climate change is weakening the natural barrier separating marine biotas of the North Atlantic and North Pacific, promoting the interchange of fishes between the two oceans. This will lead to a tremendous increase in fish biodiversity in coastal areas around Greenland and Svalbard.
Polar bears may undergo 2-5 months of ice-free conditions by 2100, threatening their survival. Projected warming under business-as-usual climate projections could lead to significant habitat loss for nearly one-tenth of the world's polar bear habitat.
Malassezia fungi, linked to human skin conditions, have been found across multiple environments including Hawaiian coral reefs, arctic soils, and deep sea vents. They dominate certain marine ecosystems and are also found in marine mammals and fish, suggesting a broader ecological significance.
A study published in PLOS ONE uses satellite images to estimate polar bear population sizes, finding similar results to aerial and ground surveys. The technology holds promise for tracking Arctic wildlife, despite logistical challenges.
A new study of shark teeth from a coastal Arctic Ocean site provides insight into Eocene marine life and suggests that sharks may be able to cope with decreasing salinity. The findings also shed light on the potential impacts of Arctic warming on shark populations.
A remarkable new dinosaur tracksite in Denali National Park, Alaska, has provided insights into the herd structure and paleobiology of northern polar dinosaurs. The discovery reveals that these animals not only lived in multi-generational herds but also thrived in a high-latitude, polar ecosystem.
Researchers found Arctic birds are initiating nests earlier in spring, with snowmelt being the primary driver of this change. The study suggests that climate change is causing long-distance migrants to adapt their breeding cycles, potentially impacting population viability.
The University of Alaska Fairbanks' Institute of Arctic Biology is welcoming European Union scientists to conduct research at the Toolik Field Station and Barrow Environmental Observatory. The scientists will study various topics, including climate change, biodiversity, and carbon cycling in Arctic environments.
Researchers analyzed 79 Greenlandic polar bears and 10 brown bears to uncover genes involved in the polar bears' adaptation to life in the high Arctic. The study found that the polar bear diverged from brown bears less than 500,000 years ago and developed unique adaptations to cope with a high-fat diet.
Researchers have gathered data on Arctic tundra ecosystems, revealing temperature's decisive role in shaping food chains and ecosystem function. The study also highlights the importance of predation in regulating energy flows and ecosystem dynamics.
A new study found that growing season gains from permafrost thaw are outweighed by increased winter respiration, leading to enhanced carbon losses. The research suggests that the Arctic's stored carbon could reach catastrophic levels within a century if permafrost continues to thaw.