Search Results for: paul

Northern Arizona University campus in the summer showing buildings in the foreground and the Peaks in the background

Grad positions at ECOSS

PhD and MS positions in Ecosystem Ecology are available in the Center for Ecosystem Science in Society (Ecoss) at Northern Arizona University. The Ecoss mission is to conduct high-impact, innovative research on ecosystems and how they respond to and shape environmental change, to train next-gen scientists, and to communicate discovery […]

fossil creek stream restoration

Stream Restoration

Fossil Creek Restoration Can we restore a river after a century of disturbance? Research in the Marks Lab has addressed the following questions: How did native species respond to restoration? Employing a BACI design (Before After Control Impact), we determined the relative importance of flow restoration versus non-native fish removal […]

Core of permafrost with a lens of ice at its deepest end.

Soil Microbial Ecology

Soil microorganisms are biogeochemical forces of global significance. They affect nutrient availability to plants, the amount of carbon stored in soils, and the evolution of the atmosphere over geologic time. The research we conduct in Ecoss examines many aspects of soil microbial ecology. Metabolic Flux Analysis of Soil Microbial Communities […]

Early morning at the Carbon in Permafrost Experimental Heating Project (CiPEHR) in Alaska with permafrost in the foreground, mountains in the background.

Future Ecosystems

Early morning at the Carbon in Permafrost Experimental Heating Project (CiPEHR) in Alaska with permafrost in the foreground, mountains in the background.

Early morning at the Carbon in Permafrost Experimental Heating Project (CiPEHR) in Alaska

Global change affects plants and soil in ecosystems across the globe. By doing so, it can alter the composition of ecosystems and the functions they provide. For instance, even small changes in plant growth and soil properties can have a large impact on the amount of CO2 and other greenhouse gases in the atmosphere. At Ecoss, we use field experiments to manipulate the temperature, rainfall and other environmental factors in various ecosystems. This allows us to mimic future conditions, and helps us understand how future ecosystems will differ from the ones today. (more…)

A blue and an orange microbe as seen microscopically on white background.

Integrating Ecosystem-Scale ’Omics in Microbial Communities.

Soil is a complex ecosystem with diverse microenvironments ranging from bulk soil with low quality substrates and no or very limited microbial growth, to high quality C-rich environments near decomposing litter and rhizosphere where microbial growth and death rates are high. Soil contains different microbial communities, supports varying microbial activities […]