School of Sustainability Graduate Culminating Experiences
Student capstone and applied projects from ASU's School of Sustainability.
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- Creators: Ampuero, Kenia
- Creators: Beye, Alioune
Description
As urbanization continues, critical wildlife may be lost. Residential landscapes, that are friendly to wildlife, can help protect biodiversity and advance sustainability. Urbanites who landscapes their yards to attract wildlife, can also gain greater knowledge and appreciation of nature. This project proposed an educational approach to encourage four households in the Victory Acres neighborhood in Tempe, Arizona to landscape their gardens with more than just aesthetics and food production as their goals. I developed a booklet on backyard biodiversity to provide the residents with information about the kinds of plants they could incorporate in their yards to attract pollinating species such as butterflies, bees, and birds. It was found that the process of using the guideline to change the landscaping of their yards, changed how the residents thought about gardening and biodiversity. All residents acquired a basic understanding of how important biodiversity is and the mutual dependence between humans and their ecosystem. The booklet also included information that enabled residents to use companion planting to increase yields, attract beneficial insects, control pests, and provide access to healthy, affordable, fresh, and chemical-free produce. These efforts contributed to the project’s goals of maximizing nature conservation efforts and reducing the disconnect between people and nature.
ContributorsAmpuero, Kenia (Author) / Cloutier, Scott (Contributor)
Created2018-04-27
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