Tundra

Tundra News -- ScienceDaily The Tundra Biome. Read the latest research on the tundra including information on tundra ecology, energy resources and the effects of climate change on this biome.

  • In a warming climate, Arctic geese are rushing north
    on July 19, 2018 at 6:21 pm

    As Arctic temperatures continue to rise, migratory barnacle geese have responded by speeding up their 3,000-kilometer migration in order to reach their destination more quickly with fewer stops along the way, according to new evidence. Unfortunately, the birds' earlier arrival isn't making as much of a difference as one might expect. […]

  • Scientists lack vital knowledge on rapid Arctic climate change
    on July 18, 2018 at 4:24 pm

    Arctic climate change research relies on field measurements and samples that are too scarce, and patchy at best, according to a comprehensive review study. The researchers looked at thousands of scientific studies, and found that around 30% of cited studies were clustered around only two research stations in the vast Arctic region. […]

  • Thawing permafrost microbiomes fuel climate change
    on July 16, 2018 at 7:15 pm

    A new study could lead to more accurate predictions or the rate of global warming from greenhouse gas emissions produced by thawing permafrost in the next 100 years. The study of the microorganisms involved in permafrost carbon degradation links changing microbial communities and biogeochemistry to the rise of greenhouse gas emissions. […]

  • Getting to know the microbes that drive climate change
    on July 16, 2018 at 3:45 pm

    A new understanding of the microbes and viruses in the thawing permafrost in Sweden may help scientists better predict the pace of climate change. […]

  • Rhino sperm from the cold
    on July 11, 2018 at 6:13 pm

    A new mixture of cryoprotectives allows for an unprecedented high motility of frozen rhinoceros sperm after thawing, report scientists. These new cryoprotectives can increase the prospects of utilizing assisted reproduction techniques for many endangered wildlife species. […]

  • What natural greenhouse gases from wetlands and permafrosts mean for Paris Agreement goals
    on July 9, 2018 at 4:01 pm

    Global fossil fuel emissions would have to be reduced by as much as 20 percent more than previous estimates to achieve the Paris Agreement targets, because of natural greenhouse gas emissions from wetlands and permafrost, new research has found. The additional reductions are equivalent to five to six years of carbon emissions from human activities. […]

  • Fingerprint of ancient abrupt climate change found in Arctic
    on July 9, 2018 at 3:11 pm

    A research team found the fingerprint of a massive flood of fresh water in the western Arctic, thought to be the cause of an ancient cold snap that began around 13,000 years ago. […]

  • Birds eat 400 to 500 million tons of insects annually
    on July 9, 2018 at 2:08 pm

    Birds around the world eat 400 to 500 million metric tons of beetles, flies, ants, moths, aphids, grasshoppers, crickets and other anthropods per year. The research highlights the important role birds play in keeping plant-eating insect populations under control. […]

  • Berry-gorging bears disperse seeds through scat and feed small mammals
    on July 5, 2018 at 8:57 pm

    Mice and voles scurry to bear scats to forage for seeds, finding nutritional value in the seeds and in some cases further dispersing them. […]

  • Salmon poisoning disease in grizzly bears
    on July 5, 2018 at 3:00 pm

    Salmon in the northwestern continental US often carry a fluke containing bacteria that can produce a deadly disease in bears called salmon poisoning disease (SPD). […]

  • A bird's eye view of the Arctic
    on July 5, 2018 at 2:04 pm

    Drones and other unmanned technologies can cost-effectively collect weather data in harsh or remote environments and contribute to better weather and climate models, according to a new study. […]

  • To help save northern spotted owls, we need to prevent kissing cousins
    on July 4, 2018 at 3:20 pm

    Biologists present a study on a Northern Spotted Owl pedigree, consisting of almost 14,200 individuals over 30 years, which determined inbreeding varies across the species' range. Selection against inbreeding based on decreased future reproduction, fewer offspring, and overall survival of individuals was also supported. These results indicate that Spotted Owl conservation efforts need to address owl breeding more. Another implication of this work is the need to increase genetic diversity to prevent further population decline. […]

  • New study questions when the brown bear became extinct in Britain
    on July 4, 2018 at 3:20 pm

    New research provides insights into the extinction of Britain's largest native carnivore. The study is the first of its kind to collate and evaluate the evidence for the brown bear in post-Ice Age Britain. […]

  • Marine mammals most at risk from increased Arctic ship traffic
    on July 2, 2018 at 5:38 pm

    The first comprehensive survey of Arctic marine mammal populations' vulnerability to shipping along two main routes finds which face the most risks from heavier traffic in the region. […]

  • The sounds of climate change
    on June 20, 2018 at 7:02 pm

    Researchers describe a way to quickly sift through thousands of hours of field recordings to estimate when songbirds arrive at their Arctic breeding grounds. Their research could be applied to any dataset of animal vocalizations to understand how migratory animals are responding to climate change. […]

  • Researchers investigate the correlation between wind and wave height in the Arctic Ocean
    on June 12, 2018 at 12:00 pm

    An international research team has found an increase in high waves and winds in the ice-free waters of the Arctic Ocean, a potentially dangerous navigational tipping point for the 'new and unusual' state of the waters. […]

  • More detailed data on thermal conditions of Arctic ground
    on June 5, 2018 at 3:21 pm

    Understanding the thermal conditions of the ground in the Arctic is of utmost importance in order to assess the effects of climate change on the occurrence of permafrost, on the ecosystems and societies of the Arctic, and the global climate system. […]

  • UAV aircrafts provide new insights into the formation of the smallest particles in Arctic
    on June 1, 2018 at 1:38 pm

    Investigations of the atmosphere by means of unmanned mini-airplanes can contribute significantly to the investigation of the causes of Arctic climate change, as they provide an insight into ground-level air layers that are not monitored by other measuring stations. […]

  • Microbial measurements can be used to gauge river flow, study suggests
    on May 31, 2018 at 2:28 pm

    Scientists have created a tool that can predict the flow rate of Arctic rivers with a surprising degree of accuracy based on the makeup and abundance of bacteria in the water. […]

  • For the past 70 years, the Danube has almost never frozen over
    on May 24, 2018 at 3:23 pm

    Since the 1950s, warmer and warmer winters and man-made inflows have largely prevented ice formation on Europe's second-largest river. […]

  • The gypsum gravity chute: A phytoplankton-elevator to the ocean floor
    on May 22, 2018 at 4:32 pm

    Tiny gypsum crystals can make phytoplankton so heavy that they rapidly sink, hereby transporting large quantities of carbon to the ocean's depths. […]

  • Traditional knowledge sheds light on changing East Greenland climate and polar bear hunt
    on May 15, 2018 at 5:15 pm

    Inuit polar bear hunters in East Greenland report changes to their subsistence hunting patterns as well as polar bear distribution and behavior due to decreasing sea ice and the introduction of hunting quotas in 2006. The study is the first in nearly 20 years to document traditional knowledge in East Greenland -- providing a valuable baseline for monitoring future changes and the polar bear population. […]

  • Climate change threatens Marine Protected Areas
    on May 8, 2018 at 9:09 pm

    New research found that most marine life in Marine Protected Areas will not be able to tolerate warming ocean temperatures caused by greenhouse gas emissions. The study found that with continued 'business-as-usual' emissions, the protections currently in place won't matter, because by 2100, warming and reduced oxygen concentration will make Marine Protected Areas uninhabitable by most species currently residing in those areas. […]

  • Phytoplankton assemblages in coastal waters remain productive, despite variable environmental...
    on April 30, 2018 at 5:19 pm

    They form the basis of the Arctic food web -- and are extremely tough: even when the water becomes more acidic and the available light or temperatures change, various phytoplankton assemblages in the Arctic demonstrate undiminished productivity and biodiversity. […]

  • Russian Arctic glacier loss doubles as temps warm
    on April 25, 2018 at 8:20 pm

    Ice mass loss in the Russian Arctic has nearly doubled over the last decade. […]

  • Record concentration of microplastic in Arctic sea ice
    on April 24, 2018 at 3:29 pm

    Experts have recently found higher amounts of microplastic in arctic sea ice than ever before. However, the majority of particles were microscopically small. […]

  • Bugged out by climate change
    on April 18, 2018 at 1:20 pm

    Warmer summer and fall seasons and fewer winter freeze-thaw events have led to changes in the relative numbers of different types of bugs in the Arctic. The study relies on the longest-standing, most comprehensive data set on arctic arthropods in the world today: a catalogue of almost 600,000 flies, wasps, spiders and other creepy-crawlies collected at the Zackenberg field station on the northeast coast of Greenland from 1996-2014. […]

  • Scientists discover first super salty subglacial lakes in Canadian Arctic
    on April 11, 2018 at 9:41 pm

    An analysis of radar data led scientists to an unexpected discovery of two lakes located beneath 550 to 750 meters of ice underneath the Devon Ice Cap, one of the largest ice caps in the Canadian Arctic. They are thought to be the first isolated hypersaline subglacial lakes in the world. […]

  • 1C rise in atmospheric temperature causes rapid changes to world's largest High Arctic lake
    on April 6, 2018 at 7:54 pm

    An interdisciplinary team of scientists examining everything from glaciology to freshwater ecology discovered drastic changes over the past decade to the world's largest High Arctic lake. And from glacial melt to the declining lake ice to changes in lake ecology, the results from Lake Hazen on Ellesmere Island in Canada are alarming. […]

  • The ban of the cave bear
    on April 5, 2018 at 2:01 pm

    At 3.5 meters long and with a shoulder height of 1.7 meters, the cave bear was one of the giants of the Ice Age. Yet few appear to have survived until the last glacial maximum 24,000 to 19,000 years ago. Researchers have conducted analyses to find out what likely caused the extinction of these large herbivores. It is believed that the renewed cooling of the climate and hunting by humans -- added to the bears purely vegetarian diet -- increased the pressure on this megafauna species. […]