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Inclusion
Ecoss Statement on Diversity, Inclusion, and Community The Center for Ecosystem Science and Society (Ecoss) at NAU is committed to fostering an inclusive environment where all members feel valued and inspired to contribute to the Center’s success. We believe that a diverse and inclusive workplace leads to greater innovation and […]
Using direct phloem transport manipulation to advance understanding of carbon dynamics in forest trees
Carbon dynamics within trees are intrinsically important for physiological functioning, in particular growth and survival, as well as ecological interactions on multiple timescales. Thus, these internal dynamics play a key role in the global carbon cycle by determining the residence time of carbon in forests via allocation to different tissues […]
Limited potential of harvest index improvement to reduce methane emissions from rice paddies
Rice is a staple food for nearly half of the world’s population, but rice paddies constitute a major source of anthropogenic CH4 emissions. Root exudates from growing rice plants are an important substrate for methane-producing microorganisms. Therefore, breeding efforts optimizing rice plant photosynthate allocation to grains, i.e., increasing harvest index […]
Limits to soil carbon stability; Deep, ancient soil carbon decomposition stimulated by new labile organic inputs
Carbon (C) buried deep in soil (below 1 m) is often hundreds to thousands of years old, though the stability and sensitivity of this deep C to environmental change are not well understood. We examined the C dynamics in three soil horizons and their responses to changes in substrate availability in […]
Mycorrhizal controls on belowground litter quality
Plant productivity and ecosystem productivity are strongly influenced by nutrient availability, which is largely determined by the decomposition rate of plant litter. Belowground litter inputs (dead roots, mycorrhizae, and exudates) are larger than aboveground litterfall in many systems. Chemical quality and diameter primarily control decomposition for coarse roots, but these […]
The semen microbiome and its relationship with local immunology and viral load in HIV infection
Semen is a major vector for HIV transmission, but the semen HIV RNA viral load (VL) only correlates moderately with the blood VL. Viral shedding can be enhanced by genital infections and associated inflammation, but it can also occur in the absence of classical pathogens. Thus, we hypothesized that a […]
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 […]
Human Microbiome
Ecoss studies the microbial communities of the human body and the implications for disease including STDs and HIV, as well as analyzing the microbial community using bioinformatics, community ecology theory and Bayesian statistical modeling.
Bruce Hungate Gives Keynote Address to the Goldschmidt Conference in Prague
Bruce Hungate, Director of Ecoss gave the keynote address to the Goldschmidt Conference in Prague this week for the session, “How do Biogeochemical Cycles Operate on a high-CO2 Planet?” The abstract for Dr. Hungate’s keynote address was entitled “Rising CO2 and the Biogeochemistry of Soil Microbial Ecosystems.”