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New grant awarded to Ecoss ecologist Ted Schuur

Ecoss ecologist Ted Schuur, who’s received a $600,000 grant from the National Science Foundation (NSF) to establish a carbon observatory at Eight Mile Lake near Denali National Park in Alaska, calls the permafrost’s massive release of greenhouse gases into the Earth’s atmosphere a “wild card,” and potentially a tipping point, […]

Hungate Science on Tap flyer

Science on Tap by Bruce Hungate

Bruce Hungate, Ecoss Director, Regents’ Professor, and McAllister Chair in Community, Culture, and Environment is presenting in Science on Tap on ‘Climate Change and Culture on the Colorado Plateau‘.  How will climate change affect our region? How can we respond? Explore the science of climate change, its relationship to society […]

Bogus Fire in the Yukon Delta National Wildlife Refuge in Alaska. Matt Snyder/Associated Press

Alaska’s huge climate mystery — and its global consequences

This story in the Washington Post (June 3, 2016) provides details on a major and surprising new report from the U.S. Geological Survey. The document raises questions about what will be the true carbon consequences of Alaska’s ongoing warming. Ted Schuur, permafrost researcher at Ecoss says about the new study “It’s important to remember […]

Impacts of hurricane Frances on Florida scrub‐oak ecosystem processes: Defoliation, net CO2 exchange and interactions with elevated CO2

Hurricane disturbances have profound impacts on ecosystem structure and function, yet their effects on ecosystem CO2 exchange have not been reported. In September 2004, our research site on a fire-regenerated scrub-oak ecosystem in central Florida was struck by Hurricane Frances with sustained winds of 113 km h−1 and wind gusts as high […]

Fire, hurricane and carbon dioxide: effects on net primary production of a subtropical woodland

Disturbance affects most terrestrial ecosystems and has the potential to shape their responses to chronic environmental change. Scrub-oak vegetation regenerating from fire disturbance in subtropical Florida was exposed to experimentally elevated carbon dioxide (CO2) concentration (+350 μl l−1) using open-top chambers for 11 yr, punctuated by hurricane disturbance in year 8. Here, we […]

Seasonal microbial and nutrient responses during a 5-year reduction in the daily temperature range of soil in a Chihuahuan Desert ecosystem

High daily temperature range of soil (DTRsoil) negatively affects soil microbial biomass and activity, but its interaction with seasonal soil moisture in regulating ecosystem function remains unclear. For our 5-year field study in the Chihuahuan Desert, we suspended shade cloth 15 cm above the soil surface to reduce daytime temperature […]