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Abstract Wildfires have increased in size, frequency, and intensity in arid regions of the western United States because of human activity, changing land use, and rising temperature. Fire can degrade water quality, reshape aquatic habitat, and increase the risk of high discharge and erosion. Drawing from patterns in montane dry forest, chaparral, and desert ecosystems, we developed a conceptual framework describing how interactions and feedbacks among material accumulation, combustion of fuels, and hydrologic transport influence the effects of fire on streams. Accumulation and flammability of fuels shift in opposition along gradients of aridity, influencing the materials available for transport. Hydrologic transport of combustion products and materials accumulated after fire can propagate the effects of fire to unburned stream–riparian corridors, and episodic precipitation characteristic of arid lands can cause lags, spatial heterogeneity, and feedbacks in response. Resolving uncertainty in fire effects on arid catchments will require monitoring across hydroclimatic gradients and episodic precipitation. 

Early engagement in undergraduate research opportunities promotes improved critical thinking and scientific reasoning, increased academic performance, enhanced retention both within STEM majors and in college overall, and improved satisfaction with college. It is therefore critical to create pathways for early-stage college students to engage in undergraduate research. Transdisciplinary Grand Challenges programs at large public universities provide an opportunity to engage undergraduates in research that is directly tied to their community’s needs. The objective of this paper is to present the development and implementation of a science communication fellowship to engage early-stage undergraduate students in research. We created the Grand Challenge Water Science Communication Fellowship, in which students work with mentors (faculty, research scientists, graduate students) to create a communication project to educate the public on a water resources related issue that is currently being researched. The research used to produce the communication project can either be the student’s own or the research of their mentor. Students select their own communications venues (e.g., paintings, podcasts, videos, infographics) and work individually with their mentor and together as a cohort to develop and refine their individual projects. The projects are presented at the end of the semester-long fellowship program at the University’s Undergraduate Research Conference, which is open to the public. Participating students and mentors represent a wide variety of backgrounds, including biology, physics, environmental engineering, mechanical engineering, economics, environmental science, and geography. Several tangible benefits were seen for both students and mentors in the program’s first year. Students formed an active multidisciplinary cohort that created a sense of belonging to the university; most of the students are now working in the research lab of their mentor; and students from the prior year’s cohort and organizing and mentoring the next year’s cohort. Research mentors have obtained broader visibility of their research by using the produced communications pieces in grant proposals, research papers, presentations, websites, and other public avenues for knowledge sharing. In the second year of the program, we now aim to use qualitative and quantitative surveys to understand if participation in the program increases students’ self-efficacy and research identity. Survey questions ask students to evaluate aspects such as, how active their role was in planning the project, sense of responsibility for project progress, sense of belonging to a community of researchers, and intention to persist in a research experience. Results will be used to scale this opportunity and create similar communication fellowships for other Grand Challenges and disciplinary programs at the university. 

Global climate models project that New Mexico's Upper Rio Grande watershed is expected to become more arid and experience greater climatic and hydrological extremes in the next 50 years. The resulting transitions will have dramatic implications for downstream water users. The Upper Rio Grande and its tributaries provide water to about half of New Mexico's population, including the downstream communities of Albuquerque and Santa Fe, and surrounding agricultural areas. In the absence of formal climate adaptation strategies, informal governance arrangements are emerging to facilitate watershed climate adaptation strategies, including fuel treatments and stream remediation. One example is the Rio Grande Water Fund (RGWF), a collaborative effort coordinating work to protect storage, delivery, and quality of Rio Grande water through landscape-scale forest restoration treatments in tributary forested watersheds. This article examines the RGWF as one example of an emerging adaptation strategy that is working within—and beyond—existing legal and policy frameworks to accomplish more collaborative efforts across jurisdictional lines and administrative barriers. We identified ten (10) key characteristics of adaptive governance from the relevant literature and then applied them to the RGWF's experience in the watershed to date. Key findings include: (1) the RGWF's approach as a collaborative network created the right level of formality while also keeping flexibility in its design, (2) a scalar fit to the environmental challenge built social capital and investment in its work, (3) leadership from key stakeholders leveraged opportunities in the watershed to create and maintain stability, and (4) use of adaptive management and peer review processes built capacity by creating the feedback loops necessary to inform future work. 

Key Points We re‐evaluate equations proposed by Francis Hall to assess concentration‐discharge ( C ‐ Q ) relationships using newly available long‐term and high‐frequency data sets Across time steps we find that log‐log and log‐linear models perform equally well to describe C ‐ Q relationships Parametrization of storage‐discharge relationships via recession analyses provides additional insight to C ‐ Q relationships 

Temporal patterns in stream chemistry provide integrated signals describing the hydrological and ecological state of whole catchments. However, stream chemistry integrates multi-scale signals of processes occurring in both the catchment and stream. Deconvoluting these signals could identify mechanisms of solute transport and transformation and provide a basis for monitoring ecosystem change. We applied trend analysis, wavelet decomposition, multivariate autoregressive state-space modeling, and analysis of concentration–discharge relationships to assess temporal patterns in high-frequency (15 min) stream chemistry from permafrost-influenced boreal catchments in Interior Alaska at diel, storm, and seasonal time scales. We compared catchments that varied in spatial extent of permafrost to identify characteristic biogeochemical signals. Catchments with higher spatial extents of permafrost were characterized by increasing nitrate concentration through the thaw season, an abrupt increase in nitrate and fluorescent dissolved organic matter (fDOM) and declining conductivity in late summer, and flushing of nitrate and fDOM during summer rainstorms. In contrast, these patterns were absent, of lower magnitude, or reversed in catchments with lower permafrost extent. Solute dynamics revealed a positive influence of permafrost on fDOM export and the role of shallow, seasonally dynamic flowpaths in delivering solutes from high-permafrost catchments to streams. Lower spatial extent of permafrost resulted in static delivery of nitrate and limited transport of fDOM to streams. Shifts in concentration–discharge relationships and seasonal trends in stream chemistry toward less temporally dynamic patterns might therefore indicate reorganized catchment hydrology and biogeochemistry due to permafrost thaw.