2801 Sharon Turnpike; P.O. Box AB Millbrook NY 12545-0129, USA
Dr. Groffman's research focuses on microbial processes in an ecosystem context. His objectives are to gain insight into 1) the role that microorganisms play in ecosystem functions related to nutrient cycling, water and air quality and soil carbon storage and 2) environmental regulation of microbes. Developing conceptual and practical ecosystem contexts for this work has required a large number of study sites and strong collaborations with other scientists.
Earthworms effect microbial nitrogen cycling and ecosystem nitrogen retention. Earthworm invasion of north temperate forests will have large consequences for nutrient retention and uptake in these ecosystems.
In the northern hardwood forests in New Hampshire we are analyzing how soil freezing events cause root and microbial mortality, which can lead to increased rates of N and P mineralization and loss.
The Cary Institute has taken a lead role in developing programs in urban ecology aimed at understanding urban ecosystems, one of Earth's fastest growing environments.
We are analyzing how changes in soil base status can influence microbial physiology, organic matter quality, and microbial activity in northern hardwood forests at Hubbard Brook.
A result of urban land use change is homogenization across cities, where neighborhoods in very different parts of the country have similar patterns of roads and other features.
Microbial ecologist Peter Groffman consults with NatGeo's David Rees who is looking to design a perfect hole and wants to know what kind of dirt he needs to make it.
Despite their familiarity, earthworms are an invasive species in America's northern temperate forests. They arrived in the mid-1800s, with the arrival of European settlers.
A lot of dead plant material is stored in the tundra soils of the far north. Most of it is frozen in permafrost, and inaccessible to the microbes that normally decompose organic matter in soils.
Following an exhaustive review of more than fifty years of long term data on environmental conditions at the Hubbard Brook Experimental Forest in the White Mountains of New Hampshire, the results are clear: spring is advancing and fall is retreating.
In the northeastern U.S., all earthworms are non-native. And they are damaging our forest habitats.
Most people think about global warming during the dog days of summer. But temperatures are rising in the winter too, and that means less snow.
Most people pay attention to climate change in the summer, when faced with heat waves, hurricanes, and severe thunderstorms. In the northeast, climate warming is actually more marked in the winter, and the loss of snow cover can have a ripple effect on tree growth and groundwater recharge.
Cary Institute of Ecosystem Studies | Millbrook, New York 12545 | Tel (845) 677-5343