Student capstone and applied projects from ASU's School of Sustainability.

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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

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
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Description
Hydroelectric dams, often part of larger development programs in developing countries are characterized by conflicting interests of stakeholder groups, emblematic for the contested nature of development. Because of these different interests, stakeholders develop different evaluations of such projects, that can be understood as frames of events and projects. Frames are

Hydroelectric dams, often part of larger development programs in developing countries are characterized by conflicting interests of stakeholder groups, emblematic for the contested nature of development. Because of these different interests, stakeholders develop different evaluations of such projects, that can be understood as frames of events and projects. Frames are “the different ways of understanding or representing a system" (Leach et al. 2010 b). In this article, I analyze frames stake-holders use to convey a distinct perspective on problems, root causes, solutions, and benefits associ-ated with the hydroelectric Gibe III dam and accompanying sugarcane plantations in the Omo Valley, Ethiopia. I found that stakeholders use contrasting frames and narratives to describe the projects, but partially also propose mutual solutions. Stakeholders incorporate modernist arguments to justify their actions. Supporters and opponents address different aspects of the livelihoods of Omo valley inhabitants. By analyzing different frames and narratives, this paper contributes to opening up and broadening the debate on the development activities in the Omo valley and shows alternative pathways for sustainable development projects in Ethiopia.
ContributorsGerigk, Rebecca (Author) / Fischer, Daniel (Contributor) / Aggarwal, Rimjhim (Contributor) / Hodbod, Jennifer (Contributor)
Created2018-06-27
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Description

Globally we are struggling to match the need for development with the available resources. Kate Raworth’s (2012) developed the idea of a “safe and just space” as a balance between the planetary boundary approach and ensuring a level of basic needs satisfaction for everyone. O’Neill et al. (2018) argue that

Globally we are struggling to match the need for development with the available resources. Kate Raworth’s (2012) developed the idea of a “safe and just space” as a balance between the planetary boundary approach and ensuring a level of basic needs satisfaction for everyone. O’Neill et al. (2018) argue that countries are currently not able to provide their populations with basic needs without concurrently exceeding planetary boundary measures. While attempts have been made to get people to change their habits through moral self-sacrifice, this has not been successful. Kate Soper (2008) argues that a change towards sustainability will only be possible if an alternative to high consumption is offered, without trade-offs in well-being. Technological improvements are often thought to end up providing solutions to the problem of overconsumption, but as Jackson (2005) shows convincingly, this is highly unlikely due to the overwhelming scale of changes required.

‘Alternative hedonism’ (Soper 2008) is a philosophical approach that has been proposed to solve this dilemma. By changing what humanity pursues to be less focused on consumption and more linked to community interaction and living healthy, fulfilling lives, we would simultaneously reduce stress on the globally limited resources and sinks. By developing and understanding satiation points – the point beyond which well-being no longer increases because of increased consumption - affluence that wastes resources without improving well-being could be reduced. This paper explores how ‘alternative hedonism’ and the development of ‘satiation points’ could be helpful in getting humanity closer to the ‘safe and just space’. The paper concludes with a discussion of some of the challenges that taking up of ‘alternative hedonism’ would entail.

ContributorsLilje, Markus (Author) / Abson, David (Contributor) / DesRoches, Tyler (Contributor) / Aggarwal, Rimjhim (Contributor)
Created2018-07-04