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.

  • 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. […]

  • Ice-free Arctic summers could hinge on small climate warming range
    on April 2, 2018 at 3:07 pm

    A range of less than one degree Fahrenheit (or half a degree Celsius) of climate warming over the next century could make all the difference when it comes to the probability of future ice-free summers in the Arctic, new research shows. […]

  • NASA visualizes the dance of a melting snowflake
    on March 29, 2018 at 5:31 pm

    NASA has produced the first three-dimensional numerical model of melting snowflakes in the atmosphere. The model provides a better understanding of how snow melts can help scientists recognize the signature in radar signals of heavier, wetter snow -- the kind that breaks power lines and tree limbs -- and could be a step toward improving predictions of this hazard. […]

  • Climate policy, carbon emissions from permafrost
    on March 26, 2018 at 8:09 pm

    Controlling greenhouse gas emissions in the coming decades could substantially reduce the consequences of carbon releases from thawing permafrost during the next 300 years, according to a new article. […]

  • Caribou drone study finds 'enormous variation' within herd
    on March 26, 2018 at 3:01 pm

    The first paper to use drones to record the movement of individual animals within a herd finds enormous variation in the social behavior of caribou. […]

  • Arctic wintertime sea ice extent is among lowest on record
    on March 23, 2018 at 6:13 pm

    Sea ice in the Arctic grew to its annual maximum extent last week, and joined 2015, 2016 and 2017 as the four lowest maximum extents on record, according to scientists. […]

  • Significant role for nitrate in the Arctic landscape
    on March 23, 2018 at 5:08 pm

    Because of the very low nitrate levels found in arctic tundra soil, scientists had assumed that plants in this biome do not use nitrate. But a new study challenges this notion. The study has important implications for predicting which arctic plant species will dominate as the climate warms, as well as how much carbon tundra ecosystems can store. […]

  • The Arctic sea-ice loss and winter temperatures in Eurasia
    on March 21, 2018 at 1:04 pm

    A long debate of the role of the sea ice and the winter temperatures in Eurasia has got a new contribution. Probably no connection, a new study says. […]

  • Wind, sea ice patterns point to climate change in western Arctic
    on March 20, 2018 at 4:34 pm

    A major shift in western Arctic wind patterns occurred throughout the winter of 2017 and the resulting changes in sea ice movement are possible indicators of a changing climate, says a researcher. […]

  • Arctic sea ice becoming a spring hazard for North Atlantic ships
    on March 19, 2018 at 3:57 pm

    More Arctic sea ice is entering the North Atlantic Ocean than before, making it increasingly dangerous for ships to navigate those waters in late spring, according to new research. […]

  • Wandering greenhouse gas
    on March 16, 2018 at 4:11 pm

    On the seafloor of the shallow coastal regions north of Siberia, microorganisms produce methane when they break down plant remains. If this greenhouse gas finds its way into the water, it can also become trapped in the sea ice that forms in these coastal waters. […]

  • Exceptionally large amount of winter snow in Northern Hemisphere this year
    on March 14, 2018 at 1:27 pm

    The new Arctic Now product shows with one picture the extent of the area in the Northern Hemisphere currently covered by ice and snow. This kind of information, which shows the accurate state of the Arctic, becomes increasingly important due to climate change. […]

  • Warm Arctic means colder, snowier winters in northeastern US, study says
    on March 13, 2018 at 5:06 pm

    Scientists have linked the frequency of extreme winter weather in the United States to Arctic temperatures. […]

  • Shifting tundra vegetation spells change for arctic animals
    on March 6, 2018 at 4:57 pm

    For nearly two decades, scientists have noted dramatic changes in arctic tundra habitat. Researchers set out to discover what could be behind the changes. […]

  • Thawing permafrost causing the 'browning' of northern lakes
    on March 2, 2018 at 5:46 pm

    As ice the melts, the organic carbon found in permafrost is being released once again after ages of confinement in the soil. It is making its way into Arctic and subarctic lakes and ponds, and modifying their composition. […]

  • Spring is springing earlier in polar regions than across the rest of earth
    on March 2, 2018 at 2:09 pm

    For every 10 degrees north from the equator you move, spring arrives about four days earlier than it did a decade ago, according to a new study. This is three times greater than what previous studies indicated. The authors connect such differences to more rapid warming at higher latitudes. […]

  • Maize fields entice geese to winter in Denmark
    on February 28, 2018 at 4:24 pm

    More and more geese remain in Denmark for the winter. They forage in the growing number of maize fields all over the country. Researchers warn that, in the long term, the many geese may cause problems for agriculture. […]

  • New understanding of ocean turbulence could improve climate models
    on February 26, 2018 at 8:26 pm

    Researchers have developed a new statistical understanding of how turbulent flows called mesoscale eddies dissipate their energy, which could be helpful in creating better ocean and climate models. […]

  • Beluga whales dive deeper, longer to find food in Arctic
    on February 20, 2018 at 9:12 pm

    Beluga whales that spend summers feeding in the Arctic are diving deeper and longer to find food than in earlier years, when sea ice covered more of the ocean for longer periods, according to a new analysis. […]

  • Oil-eating microbes are challenged in the Arctic
    on February 20, 2018 at 3:41 pm

    Bacteria play a major role in cleaning up oil spills and mitigating its environmental impacts. In a new paper, researchers examine the major limiting factors for microbial degradation in Arctic environments. […]

  • NASA's longest running survey of ice shattered records in 2017
    on February 13, 2018 at 11:35 pm

    Last year was a record-breaking one for Operation IceBridge, NASA's aerial survey of the state of polar ice. […]

  • Polar vortex defies climate change in the Southeast U.S.
    on February 13, 2018 at 11:35 pm

    Overwhelming scientific evidence has demonstrated that our planet is getting warmer due to climate change, yet parts of the eastern US are actually getting cooler. According to a new study, the location of this anomaly, known as the 'US warming hole,' is a moving target. During the winter and spring, the US warming hole sits over the Southeast, as the polar vortex allows arctic air to plunge into the region, resulting in persistently cooler temperatures. […]

  • Mysterious lives of narwhals
    on February 9, 2018 at 6:14 pm

    Narwhals are some of the most elusive creatures in the ocean, spending most of their lives in deep water far from shore. But new research may shed a bit of light on these enigmatic marine mammals. […]

  • Sea ice algae blooms in the dark
    on February 6, 2018 at 7:06 pm

    Researchers have measured a new world record: Small ice algae on the underside of the Arctic sea ice live and grow at a light level corresponding to only 0.02 percent of the light at the surface of the ice. Algae are the primary component of the Arctic food web and produce food far earlier in the year than previously thought. […]

  • Sea floor uplift after last ice age causes methane release in the Arctic today
    on February 6, 2018 at 3:58 pm

    Present-day release of methane from an area of the Arctic Ocean is an effect of the uplift of the sea floor, rather than anthropogenic ocean warming, a new study states. […]

  • Massive reserves of mercury hidden in permafrost
    on February 5, 2018 at 6:42 pm

    Researchers have discovered permafrost in the northern hemisphere stores massive amounts of natural mercury, a finding with significant implications for human health and ecosystems worldwide. […]