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Category: Climate Change

  • Did Humans Make The Sahara A Desert?

    The story that emerged suggests that as communities of people spread, they changed the landscape to accommodate crops and livestock, causing an exchange in plant species that covered the ground for specimens that exposed the soil. As sunlight bounced from the brighter soil, it warmed the air, building a feedback loop that shifted the atmospheric…

  • Are Tree Trunks Contributing To Global Climate Change? (WHAT?)

    Methane is about 25 times stronger than carbon dioxide, with some estimates as high as 33 times stronger due to its effects when it is in the atmosphere. Because of methane’s global warming potential, identifying the sources and “sinks” or storehouses of this greenhouse gas is critical for measuring and understanding its implications across ecosystems.…

  • More Than A Carbon Sink: Forests Necessary For Moderating Temperatures

    While forests often absorb more solar radiation than grasslands or croplands, they also put more moisture into the air and promote more mixing of the air near the surface than those shorter types of vegetation. “What we are finding is that these mechanisms are often more important, even in some of the higher-latitude regions, where…

  • Will Re-Creating Ice Age Landscapes Slow Climate Change? Welcome To Pleistocene Park.

    If this intercontinental ice block warms too quickly, its thawing will send as much greenhouse gas into the atmosphere each year as do all of America’s SUVs, airliners, container ships, factories, and coal-burning plants combined. It could throw the planet’s climate into a calamitous feedback loop, in which faster heating begets faster melting. “Pleistocene Park…

  • Coastal Wetlands Uniquely Valuable To Slow Climate Change

    All told, coastal wetlands may capture and store more than 200 metric tons of carbon per year globally. Importantly, these ecosystems store 50-90 percent of this carbon in soils, where it can stay for thousands of years if left undisturbed. “When we destroy coastal wetlands, for coastal development or aquaculture, we turn these impressive natural…

  • Longest-lived Tree Species Defends Itself Against Deadly Pine Beetle

    Great Basin bristlecone pine has the longest lifespan of any non-clonal organism worldwide. We found that mountain pine beetle, a native insect which has killed millions of pine trees in the past decade, is not attracted to Great Basin bristlecone pine. (Click on title for full story.)

  • Climate Change Demands A New Understanding Of Endangered Plant Species

    Few studies have incorporated palaeoecological data into projections of future distributions. Here we project changes in abundance and conservation status under a climate warming scenario for 187 European and North American plant taxa using niche-based models calibrated against taxa–climate relationships for the past 21,000 years. We find that incorporating long-term data into niche-based models increases…

  • To Mitigate Climate Change Effects On Coffee Crops, Farmers Seek Matchmaker’s Help

    Coffee crops are incredibly sensitive to temperature changes. Increasing temperatures world-wide could make it difficult to grow coffee in Brazil. Farmers have tried to lower the temperature for coffee plants by intercropping them with shade trees. But so far, they haven’t been very successful. The trees provided too much shade and competed with the coffee…

  • As Climate Change Forces Marine Life To Relocate, Kelp Forests Suffer

    As a result of climate change, warm-water fish species are shifting their range and invading temperate areas. Our results show that over-grazing by these fish can have a profound impact, leading to kelp deforestation and barren reefs. This is the first study demonstrating that the effects of warming in kelp forests are two-fold: higher temperatures…

  • Experience Climate Change As Music

    With data sonification, you can handle a lot more dimensions if you’re listening to data than looking at it, It’s useful for scientists on the one hand but on the other hand, the fact that you can take something like the data from 2,000 trees in Alaska and give someone a 20-second description of what…