Search Results for: and marks jc

leshyk illustration linking biogeochemistry

Linking Biogeochemistry and Microbial Community Chemistry

Overview The identities of organisms profoundly influence ecosystems, and microbial diversity is vast. The obvious disconnect between this diversity and its treatment in C cycling models is perhaps the best manifestation of the common complaint that so much physiology, taxonomy, ecology, and diversity is ignored when microbial communities are described […]

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 […]

Quality control expert Inspecting chicken meat specimen in the laboratory

Ecosystem of Antibiotic Resistance

We study antibiotic resistance in human pathogens, genetic sampling of meat for antibiotic resistance, methods to develop a molecular database for strains of E. coli in urinary tract infections, and food safety of kosher vs non-kosher chicken.

Detail of Yellow Fremont Cottonwood Leaves in Autumn Stream

Leaf Litter Effects on Stream Ecosystems

As part of a large interdisciplinary team, with funding from the National Science Foundation, we have studied how genetic and environmental factors affect leaf litter quality in cottonwoods and other riparian species, and how these effects are manifest in aquatic ecosystems.