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: Collins, Kathleen
Description
The trend couldn’t be clearer. The White House is doing everything it can to reverse the economic, social, and environmental progress bringing the age of fossil fuels to an end. From subsidies for the dying coal industry to gutting regulations on air pollution, recent actions by the president and his cabinet show every intention of turning the dial on our energy policy back a full 30 years (Barba, 2017). Now, the fossil fuel industry is turning to a new strategy: building ethane cracker plants. These facilities turn fracked gas into plastics and – just as important – create more infrastructures for fossil fuels. All in places like the Ohio River Valley where communities are fighting hard to leave natural gas and the impacts of dirty energy behind.
The good news is that more and more communities see these plants for what they are: a wrong turn back to the dark days of dirty energy degrading community health, driving climate change and polluting the air, water, and soil we all share. With our planet’s future and the health of their families all on the line, everyday activists in communities throughout the Ohio River Basin are now banding together to fight back. You can too.
The good news is that more and more communities see these plants for what they are: a wrong turn back to the dark days of dirty energy degrading community health, driving climate change and polluting the air, water, and soil we all share. With our planet’s future and the health of their families all on the line, everyday activists in communities throughout the Ohio River Basin are now banding together to fight back. You can too.
ContributorsCollins, Kathleen (Author)
Created2019-05-15
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