NAU joins with ASU, UA and Arizona communities to confront climate crisis As Arizona confronts the impacts of a hotter world, Northern Arizona University is joining partners from Arizona State University, the University of Arizona and communities from throughout the state to convene the first statewide, solutions-focused climate summit. Climate […]
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Girls code. In Flagstaff, thanks to the efforts of Ecoss/SICCS postdoc and club founder Katharyn Duffy. Check out this great Arizona Daily Sun story about the new Girls Who Code club in Northern Arizona and Duffy’s plans for expanding the after-school club next year!
Ecoss Assistant Research Professor Christina Schädel talks to KNAU and explains what the latest IPCC Special Report on 1.5° warming means for Arizona. Schädel was a contributing author to the report. Short excerpt from the interview: KNAU: What kind of changes are we seeing from climate change here in Arizona? […]
Bruce Hungate, Director of the Center for Ecosystem Science and Society at Northern Arizona University, is one of the coauthors of this new study. He was surprised to find a symbiotic relationship between plants and a certain fungus boosted growth even without nitrogen. Hear about the study in this short […]
Ecogeomorphic feedbacks in regrowth of travertine step-pool morphology after dam decommissioning, Fossil Creek, Arizona
The linkages between fluvial geomorphology and aquatic ecosystems are commonly conceptualized as a one-way causal chain in which geomorphic processes create the physical template for ecological dynamics. In streams with a travertine step-pool morphology, however, biotic processes strongly influence the formation and growth of travertine dams, creating the potential for […]
Interactions between geomorphology and ecosystem processes in travertine streams–implications for dam decommissioning in Fossil Creek, Arizona.
Travertine deposits of calcium carbonate can dominate channel geomorphology in streams where travertine deposition creates a distinct morphology characterized by travertine terraces, steep waterfalls, and large pools. Algae and microorganisms can facilitate travertine deposition, but how travertine affects material and energy flow in stream ecosystems is less well understood. Nearly […]
Dam decommissioning projects, although numerous, rarely include complete sets of data before and after restoration for evaluating the ecological consequences of such projects. In this study, we used a before-after control-impact (BACI) design to assess changes in leaf litter decomposition and associated macroinvertebrate and fungal decomposers following dam decommissioning in […]
Restoration of native fish to freshwater habitats often requires nonnative fish removal via chemicals such as antimycin A. Despite widespread use, there are limited field studies quantifying the effects of antimycin A on aquatic macroinvertebrates. We studied the immediate and short-term effects of antimycin A on macroinvertebrates during a fish […]
Ecogeomorphic feedbacks in regrowth of travertine step-pool morphology after dam decomissioning, Fossil Creek, Arizona
The linkages between fluvial geomorphology and aquatic ecosystems are commonly conceptualized as a one-way causal chain inwhich geomorphic processes create the physical template for ecological dynamics. In streams with a travertine step-pool morphology, however, biotic processes strongly influence the formation and growth of travertinedams, creating the potential fornumerous feedbacks.Herewetakeadvantage of […]
Ecoss graduate student Ali Martinez and a team of ecologists including her advisor Marks, Ecoss researchers Ben Koch and Zasha Welsh, Alex Flecker (Cornell University) and Steve Thomas (University of Nebraska) constructed a system of miniature streams whose temperatures Martinez can manipulate. The team studies how nutrients will move in […]