School of Sustainability Graduate Culminating Experiences
Student capstone and applied projects from ASU's School of Sustainability.
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- Creators: Beye, Alioune
- Creators: Boyle, Brian
Description
In Senegal, West Africa, soils are a vital resource for livelihoods and food security in smallholder farming communities. Low nitrogen (N) soils pose obvious challenges for crop production but may also, counterintuitively, promote the abundance of agricultural pests like the Senegalese locust, Oedaleus senegalensis. In this study I investigated how the abundance of locusts and grasshoppers are impacted by soil fertility through plant nutrients and how these variables change across land use types. We worked in two rural farming villages in the Kaffrine region of Senegal. Overall, there was little variation in soil properties and an agricultural landscape low in soil organic matter (SOM) and inorganic soil nitrogen. I corroborated that SOM is a significant driver of soil inorganic N, which had a positive relationship to plant N content. Of the management practices we surveyed, fallowing fields was important for soil nutrient restoration and years spent fallow was significantly correlated to inorganic soil N and SOM. O. senegalensis was least abundant in groundnut areas where plant N was highest. Additionally, I found a significant negative correlation between O. senegalensis abundance and plant N, suggesting that plant nutrients are an important driver of their populations. Grasshoppers, excluding O. senegalensis, were more numerous in grazing areas and fallow areas, perhaps due to a higher diversity of ecological niches and host plants. These results connect land use, soil, and vegetation to herbivores and suggest that improving soil fertility could be used as an alternative to pesticides to keep locusts at bay and improve crop yields.
ContributorsWord, Mira (Author) / Hall, Sharon (Contributor) / Robinson, Brian (Contributor) / Manneh, Balanding (Contributor) / Beye, Alioune (Contributor) / Cease, Arianne (Contributor)
Created2018-04-10
Description
The staging of sport events occurs over a fixed duration of time, requiring an influx of resources and human involvement. This situation can result in environmental issues such as excess greenhouse gas emissions and waste generation. Furthermore, economic outcomes are not always equally shared amongst local host communities, and unequal access to participation can manifest in unforeseen ways from the event organizer's perspective. Sports organizations are recognizing the potential for operation related negative impacts, yet most efforts to mitigate these adverse outcomes lack theoretical grounding and holistic approaches aligned with principles of sustainability.
USA Triathlon (USAT) is not exempt from the challenges faced in sustainable event management. With 400,000 plus members, USAT has the largest membership of any sport's governing body in the country. Through managing five owned events and sanctioning over 4,300 on an annual basis, the combined potential for a negative footprint is significant. To temper the potential impacts of USAT events, this project focused on an overarching sustainable event strategy to equip management, operations, and race directors with a suite of resources to manage and mitigate the overall sustainability footprint of events toward desired outcomes that adhere to principles of sustainability.
USA Triathlon (USAT) is not exempt from the challenges faced in sustainable event management. With 400,000 plus members, USAT has the largest membership of any sport's governing body in the country. Through managing five owned events and sanctioning over 4,300 on an annual basis, the combined potential for a negative footprint is significant. To temper the potential impacts of USAT events, this project focused on an overarching sustainable event strategy to equip management, operations, and race directors with a suite of resources to manage and mitigate the overall sustainability footprint of events toward desired outcomes that adhere to principles of sustainability.
ContributorsBoyle, Brian (Writer of accompanying material)
Created2020-05-13