Search for: All records

Food, energy and water (FEW) systems are inextricably linked, and thus, solutions to FEW nexus challenges, including water and food insecurity, require an interconnected science and policy approach framed in systems thinking. To drive these solutions, we developed an interdisciplinary, experiential graduate education program focused on innovations at the FEW nexus. As part of our program, PhD students complete a two-course sequence: (1) an experiential introduction to innovations at the FEW nexus and (2) a data practicum. The two courses are linked through an interdisciplinary FEW systems research project that begins during the first course and is completed at the end of the second course. Project deliverables include research manuscripts, grant proposals, policy memos, and outreach materials. Topics addressed in these projects include building electrification to reduce reliance on fossil fuels for heating, agrivoltaic farming to combat FEW vulnerabilities in the southwestern United States, assessment of food choices to influence sustainable dining practices, and understanding the complexities of FEW nexus research and training at the university level. Evaluation data were generated from our first three student cohorts (n = 33 students) using a mixed method, multi-informant evaluation approach, including the administration of an adapted version of a validated pre-post-survey to collect baseline and end-of-semester data. The survey assessed student confidence in the following example areas: communication, collaboration, and interdisciplinary research skills. Overall, students reported confidence growth in utilizing interdisciplinary research methods (e.g., synthesize the approaches and tools from multiple disciplines to evaluate and address a research problem), collaborating with range of professionals and communicating their research results to diverse audience. The growth in confidence in the surveyed areas aligned with the learning objectives for the two-course sequence, and the interdisciplinary project experience was continually improved based on student feedback. This two-course sequence represents one successful approach for educators to rethink the traditional siloed approach of training doctoral students working at the FEW nexus. 

Food, energy and water (FEW) systems are critically stressed worldwide. These challenges require transformative science, engineering and policy solutions. However, cross-cutting solutions can only arise through transdisciplinary training of our future science and policy leaders. The University of Maryland Global STEWARDS National Science Foundation Research Traineeship seeks to meet these needs. This study assessed a foundational component of the program: a novel, experiential course focused on transdisciplinary training and communication skills. We drew on data from the first two offerings of the course and utilized a mixed-method, multi-informant evaluation that included validated pre–post surveys, individual interviews and focus groups. Paired Mann–Whitney–Wilcoxon tests were used to compare pre- and post-means. After the course, students reported improvements in their ability to identify strengths and weaknesses of multiple FEW nexus disciplines; articulate interplays between FEW systems at multiple scales; explain to peers the most important aspects of their research; and collaborate with scientists outside their field. Students also reported improvements in their oral and written communication skills, along with their ability to critically review others’ work. Our findings demonstrate that this graduate course can serve as an effective model to develop transdisciplinary researchers and communicators through cutting edge, experiential curricular approaches. 

ABSTRACT Irrigation water sources have been shown to harbor foodborne pathogens and could contribute to the outbreak of foodborne illness related to consumption of contaminated produce. Determining the probability of and the degree to which these irrigation water sources contain these pathogens is paramount. The purpose of this study was to determine the prevalence of Salmonella enterica and Listeria monocytogenes in alternative irrigation water sources. Water samples ( n  = 188) were collected over 2 years (2016 to 2018) from 2 reclaimed water plants, 3 nontidal freshwater rivers, and 1 tidal brackish river on Maryland’s Eastern Shore (ESM). Samples were collected by filtration using modified Moore swabs (MMS) and analyzed by culture methods. Pathogen levels were quantified using a modified most probable number (MPN) procedure with three different volumes (10 liters, 1 liter, and 0.1 liter). Overall, 65% (122/188) and 40% (76/188) of water samples were positive for S. enterica and L. monocytogenes , respectively. For both pathogens, MPN values ranged from 0.015 to 11 MPN/liter. Pathogen levels (MPN/liter) were significantly ( P <  0.05) greater for the nontidal freshwater river sites and the tidal brackish river site than the reclaimed water sites. L. monocytogenes levels in water varied based on season. Detection of S. enterica was more likely with 10-liter filtration compared to 0.1-liter filtration. The physicochemical factors measured attributed only 6.4% of the constrained variance to the levels of both pathogens. This study shows clear variations in S. enterica and L. monocytogenes levels in irrigation water sources on ESM. IMPORTANCE In the last several decades, Maryland’s Eastern Shore has seen significant declines in groundwater levels. While this area is not currently experiencing drought conditions or water scarcity, this research represents a proactive approach. Efforts, to investigate the levels of pathogenic bacteria and the microbial quality of alternative irrigation water are important for sustainable irrigation practices into the future. This research will be used to determine the suitability of alternative irrigation water sources for use in fresh produce irrigation to conserve groundwater.