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.

  • Post-fire logging harms Spotted owls
    on January 18, 2018 at 4:41 pm

    Post-fire logging, rather than the wildfires themselves, is responsible for the steep decline in territory occupancy of the rare Spotted owls living in the forests of California. The study's results coincide with the strong consensus among hundreds of US scientists opposing post-fire logging operations due to a wide range of ecological harms. […]

  • Warming Arctic climate constrains life in cold-adapted mammals
    on January 18, 2018 at 3:08 pm

    A new study has uncovered previously unknown effects of rain-on-snow events, winter precipitation and ice tidal surges on the muskoxen. […]

  • Release of ancient methane due to changing climate kept in check by ocean waters
    on January 17, 2018 at 9:40 pm

    Ocean sediments are a massive storehouse for the potent greenhouse gas methane. But methane only acts as a greenhouse gas if and when it reaches the atmosphere. Environmental scientists recently set out to discover whether or not this ancient-sourced methane, which is released due to warming ocean waters, survives the journey from the seafloor and reaches the atmosphere. […]

  • Weather anomalies accelerate the melting of sea ice
    on January 17, 2018 at 3:25 am

    Researchers reveal why Arctic sea ice began to melt in the middle of winter two years ago -- and that the increased melting of ice in summer is linked to recurring periods of fair weather. […]

  • Closing roads counters effects of habitat loss for grizzly bears
    on January 9, 2018 at 2:02 pm

    It's simple math, says a scientist. The closer grizzly bears are to humans, the more ways there are for the bears to die. Put more simply, more roads equal fewer grizzly bears. […]

  • Is Arctic warming influencing the UK's extreme weather?
    on January 4, 2018 at 5:03 pm

    Severe snowy weather in winter or extreme rains in summer in the UK might be influenced by warming trends in the Arctic, according to climate scientists in the US and the UK. […]

  • Scientists find surprising evidence of rapid changes in the Arctic
    on January 3, 2018 at 9:02 pm

    Scientists have found surprising evidence of rapid climate change in the Arctic: In the middle of the Arctic Ocean near the North Pole, they discovered that the levels of radium-228 have almost doubled over the last decade. […]

  • Arctic clouds highly sensitive to air pollution
    on January 3, 2018 at 3:11 pm

    A study by atmospheric scientists has found that the air in the Arctic is extraordinarily sensitive to air pollution, and that particulate matter may spur Arctic cloud formation. These clouds can act as a blanket, further warming an already-changing Arctic. […]

  • Streams can be sensors
    on December 29, 2017 at 6:53 pm

    Scientists have shown that streams can be key health indicators of a region's landscape, but the way they're being monitored can be improved. […]

  • Life on the ice: For the first time scientists have directly observed living bacteria in polar ice...
    on December 20, 2017 at 5:20 pm

    For the first time scientists have directly observed living bacteria in polar ice and snow -- an environment once considered sterile. The new evidence has the potential to alter perceptions about which planets in the universe could sustain life and may mean that humans are having an even greater impact on levels of CO2 in Earth's atmosphere than accepted evidence from climate history studies of ice cores suggests. […]

  • Tiny red animals dart in the dark under the ice of a frozen Quebec lake
    on December 19, 2017 at 7:44 pm

    In a frozen lake in Quebec, tiny red creatures zip about under the ice. Biologists report the discovery of active, unusually red, life in a winter lake. Bright pigment may preserve zooplankton's fatty acids from oxidative damage. […]

  • Tiny globetrotters: Bacteria which live in the Arctic and the Antarctic
    on December 13, 2017 at 5:57 pm

    Geoscientists have compared micro-organisms in the polar regions, noting that some bacteria can be found in both regions of Earth. […]

  • How fires are changing the tundra’s face
    on December 12, 2017 at 7:18 pm

    Climate change takes a heavy toll on the tundra, increasing the probability of extreme droughts. As a result, the frequency of fires in forests, bogs and even wetlands continues to rise. In addition, the northern areas of the tundra have also become more accessible and negatively impacted by human activities in recent years. […]

  • Traces of historical reindeer grazing can still be observed after 100 years
    on December 11, 2017 at 2:19 pm

    With the holiday season around the corner, most people may first think of reindeer as Santa Claus' trusted helpers. But it turns out that reindeer are not only good at pulling Santa's sleigh; they can also teach us important lessons about the functioning of ecosystems. By studying small meadows in the Swedish mountains, formed by historical traditional reindeer herding practices, researchers revealed long-lasting ecological effects induced by reindeer grazing. […]

  • Decades-past logging still threatens spotted owls in national forests
    on December 6, 2017 at 7:16 pm

    Logging of the largest trees in the Sierra Nevada's national forests ended in the early 1990s after agreements were struck to protect species' habitat. But new research by ecologists shows that spotted owls, one of the iconic species logging restrictions were meant to protect, have continued to experience population declines in the forests. […]

  • Amazon floodplain trees emit as much methane as all Earth’s oceans combined
    on December 5, 2017 at 7:26 pm

    New research solves mystery of missing methane source in the Amazon Rainforest. […]

  • Future arctic sea ice loss could dry out California
    on December 5, 2017 at 2:21 pm

    Arctic sea ice loss of the magnitude expected in the next few decades could impact California's rainfall and exacerbate future droughts, according to new research. […]

  • Science community considers approaches to climate disinformation
    on November 30, 2017 at 2:01 pm

    Although human-caused global warming is accepted by leading scientific organization around the world, public opinion about humanity's role fails to keep pace with consensus views. Numerous Internet blogs have contributed to this 'consensus gap' by misrepresenting topics such as polar bear well-being and Arctic sea ice extent as 'keystone dominoes' for toppling scientific understanding. […]

  • Polar bear blogs reveal dangerous gap between climate-change facts and opinions
    on November 29, 2017 at 6:14 pm

    Climate-change discussions on social media are very influential. A new study shows that when it comes to iconic topics such as polar bears and retreating sea ice, climate blogs fall into two distinct camps. With little or no overlap between deniers and the available scientific facts. […]

  • Added Arctic data shows global warming didn't pause
    on November 20, 2017 at 4:13 pm

    Missing Arctic temperature data, not Mother Nature, created the seeming slowdown of global warming from 1998 to 2012, according to a new study. […]

  • Plant respiration could become a bigger feedback on climate than expected
    on November 17, 2017 at 3:38 pm

    New research suggests that plant respiration is a larger source of carbon emissions than previously thought, and warns that as the world warms, this may reduce the ability of Earth's land surface to absorb emissions due to fossil fuel burning. […]

  • Cooling in high and mid-latitudes led to aridification in Northern Africa
    on November 8, 2017 at 2:24 pm

    Analyses of ancient plant leaf wax found in the sediments of the Gulf of Guinea told the researchers about rainfall in Cameroon and the central Sahel-Sahara over the past several millennia and showed a rapid aridification around 5500 years before now. […]

  • Federal climate science report for U.S. released
    on November 6, 2017 at 7:37 pm

    The newly released Climate Science Special Report describes current trends in the climate globally and for the U.S., and projects trends in temperature, precipitation, sea-level rise and Arctic sea ice for the remainder of this century. […]

  • Groundwater, tundra fires may work together to thaw permafrost
    on October 23, 2017 at 1:46 pm

    Groundwater may play an unrecognized role in thawing Arctic permafrost following wildfires, according to new research. […]

  • Sunlight and 'right' microbes convert Arctic carbon into carbon dioxide
    on October 4, 2017 at 8:38 pm

    A new study outlines the mechanisms and points to the importance of both sunlight and the right microbial community as keys to converting permafrost carbon to CO2. […]

  • In warmer climates, Greenlandic deltas have grown
    on October 4, 2017 at 5:35 pm

    Unlike most other deltas worldwide, Greenland's are growing -- a trend with major consequences for both fishing and tourism. […]

  • Antarctica: Return of the Weddell polynya supports Kiel climate model
    on September 29, 2017 at 1:33 pm

    Currently, winter has still a firm grip on Antarctica. At this time of the year, the Weddell Sea usually is covered with a thick layer of sea ice. In spite of the icy temperatures in the region, satellite images depict a large ice-free area in the middle of the ice cover. […]

  • Winter cold extremes linked to high-altitude polar vortex weakening
    on September 22, 2017 at 1:40 pm

    When the strong winds that circle the Arctic slacken, cold polar air can escape and cause extreme winter chills in parts of the Northern hemisphere. A new study finds that these weak states have become more persistent over the past four decades and can be linked to cold winters in Russia and Europe. […]

  • Atmospheric effects of Arctic snowmelt
    on September 20, 2017 at 2:00 pm

    Researchers are exploring the changing chemistry of the Arctic's atmosphere to help answer the question of what happens as snow and ice begin to melt. […]

  • End-of-summer Arctic sea ice extent is eighth lowest on record
    on September 19, 2017 at 8:01 pm

    Arctic sea ice appeared to have reached its yearly lowest extent on Sept. 13, scientists have reported. Analysis of satellite data showed that at 1.79 million square miles (4.64 million square kilometers), this year's Arctic sea ice minimum extent is the eighth lowest in the consistent long-term satellite record, which began in 1978. […]