The story of phosphorus : sustainability implications of global phosphorus scarcity for food security

University of Technology, Sydney. Faculty of Science.The story of phosphorus began with the search for the philosopher’s stone, and centuries later the critical role of phosphorus in soil fertility and crop growth was highlighted. Eventually, phosphorus was implicated in the global environmental challenge of eutrophication. Now, we are on the brink of yet another emerging chapter in the story: global phosphorus scarcity linked to food security. Through a transdisciplinary and systemic inquiry, this thesis has analyzed, reconceptualized and synthesized the physical and institutional dimensions of global phosphorus scarcity in the context of food security, leading to a new framing, ‘phosphorus security’ to guide future work towards a more sustainable and food secure pathway. In a world which will be home to nine billion people by the middle of this century, producing enough food and other vital resources is likely to be a substantial challenge for humanity. Phosphorus, together with nitrogen and potassium, is an essential plant nutrient. It is applied to agricultural soils in fertilizers to maintain high crop yields. Phosphorus has no substitute in food production. Therefore, securing the long-term availability and accessibility of phosphorus is crucial to global food security. However the major source of phosphorus today, phosphate rock, is a non-renewable resource and high quality reserves are becoming increasingly scarce. This thesis estimates peak phosphorus to occur before 2035, after which demand will exceed supply. Phosphorus scarcity is defined by more than just physical scarcity of phosphate rock and this thesis develops five important dimensions. For example, there is a scarcity of management of phosphorus throughout the entire food production and consumption system: the global phosphorus flows analysis found that only 20% of phosphorus in phosphate rock mined for food production actually reaches the food consumed by the global population due to substantial inefficiencies and losses from mine to field to fork. There is also an economic scarcity, where for example, while all the world’s farmers need access to sufficient fertilizers, only those with sufficient purchasing power can access fertilizer markets. Institutional scarcity, such as the lack of governance structures at the international level that explicitly aim to ensure long-term availability of and access to global phosphorus resources for food production that has led to ineffective and fragmented governance of phosphorus, including a lack of: overall coordination, monitoring and feedback, clear roles and responsibilities, long-term planning and equitable distribution. Finally, geopolitical scarcity arising from 90% of the world’s remaining high-grade phosphate rock reserves being controlled by just five countries (a majority of which are subject to geopolitical tensions) can limit the availability of phosphorus on the market and raises serious ethical questions. The long-term future scenarios presented in this thesis indicate that meeting future global food demand will likely require a substantial reduction in the global demand for phosphorus through not only improved efficient use of phosphorus in agriculture, but also through changing diets and increasing efficiency in the food chain. The unavoidable demand for phosphorus could then be met through a high recovery and reuse rate of all sources of phosphorus (crop residues, food waste, manure, excreta) and other sources including some phosphate rock. A ‘hard-landing’ situation could involve further fertilizer price spikes, increased waste and pollution (including eutrophication), increased energy consumption associated with the production and trade of phosphorus fertilizers, reduced farmer access to phosphorus, reduced global crop yields and increased food insecurity. A preferred ‘soft landing’ situation will however require substantial changes to physical and institutional infrastructure, including improved governance structures at the global, national and other levels, such as new policies, partnerships and roles to bring together the food, fertilizer, agriculture, sanitation and waste sectors for a coordinated response. Finally, this thesis proposes a new global goal - phosphorus security - to be integrated in the dominant research discourses and policy debates on global food security and global environmental change. Among other criteria, phosphorus security requires that phosphorus use is decoupled from environmental degradation and that farmers’ access to phosphorus is secured

The Introduction and Development of Historical Argumentation in an Eighth Grade U.S. History Classroom

The purpose of this study was to examine how students used the elements of a historical argument to interpret how equality and opportunity affected marginalized groups in a given historical era. To do this, 150 eighth grade students wrote thirteen historical arguments, and submitted a written portfolio of their work at the end of the school year. Since these students had not written a historical argument before, they had a scaffolding system in place to guide them with the increasingly complex tasks they faced when writing their historical argument. Students were given a historical argument to write once every two weeks, with a one-week deadline to complete the assignment. Students were expected to use a historical argumentation rubric that was created for the purpose of this study. The rubric is largely based upon the research of Monte-Sano (2010). There were typically seven to eight students in each discussion group, with each discussion group in the same section of the social studies class. The analysis of each discussion group fell into two discrete groups: a met expectations group, which met the basic standards of the writing assignments according to the historical argumentation rubric, and the exceeded expectations groups, which typically used the rubric to write more complex historical arguments. One student was selected at random as a representative of each group to examine how they approached the writing process. The work from each representative student’s discussion group was also analyzed to understand how well students interpreted the elements of a historical argument, their understanding of equality and opportunity, and how they used feedback to improve their historical arguments. The findings revealed that students could use the elements of a historical argument to discuss equality and opportunity, but with varying degrees of success. Students in the met expectations groups struggled with the more advanced tasks in the scaffolding process, while the students in the exceeded expectations groups were able to perform most of these tasks by the end of the school year. Students in both groups struggled with contextualizing evidence in a historical argument, which was the most difficult task in the scaffolding process. Students in both groups could discuss how well they understood the elements of a historical argument, equality and opportunity, and how they used feedback to improve their historical arguments, but with varying degrees of success. The findings indicate that students in both groups struggled to offer the level of reflection needed in their written portfolio. The students in the met expectations groups typically did not offer the level of reflection that the students in the exceeded expectations groups provided

Peak phosphorus: Clarifying the key issues of a vigorous debate about long-term phosphorus security

This paper reviews the latest information and perspectives on global phosphorus scarcity. Phosphorus is essential for food production and modern agriculture currently sources phosphorus fertilizers from finite phosphate rock. The 2008 food and phosphate fertilizer price spikes triggered increased concerns regarding the depletion timeline of phosphate rock reserves. While estimates range from 30 to 300 years and are shrouded by lack of publicly available data and substantial uncertainty, there is a general consensus that the quality and accessibility of remaining reserves are decreasing and costs will increase. This paper clarifies common sources of misunderstandings about phosphorus scarcity and identifies areas of consensus. It then asks, despite some persistent uncertainty, what would it take to achieve global phosphorus security? What would a 'hard-landing' response look like and how could preferred 'soft-landing' responses be achieved?© 2011 by the authors

Beginning at the end: The outcome spaces framework to guide purposive transdisciplinary research

© 2014 The Authors. The framework presented in this paper offers an alternative starting point for transdisciplinary research projects seeking to create change. The framework begins at the end: it distinguishes three distinct 'transdisciplinary outcome spaces' and proposes articulating their content for purposive transdisciplinary research projects. Defining upfront the desired improvements has profound implications for how transdisciplinary research is conceived, designed, implemented and evaluated.Three key realms of transdisciplinary outcome spaces are distinguished - situation, knowledge, and learning - and elaborated: (1) an improvement within the 'situation' or field of inquiry; (2) the generation of relevant stocks and flows of knowledge, including scholarly knowledge and other societal knowledge forms, and making those insights accessible and meaningful to researchers, participants and beneficiaries; and (3) mutual and transformational learning by researchers and research participants to increase the likelihood of persistent change.Positioning the framework in the field of transdisciplinary literature reveals that much of the contestation concerning transdisciplinary research and practice may be attributable to the diverse but implicit ontological and epistemological perspectives inhabited by transdisciplinary researchers, leading to a call for more reflexive and explicit attention to these and other formative influences (i.e. sources of funding, project motivation, or locus of power)

Less is More? Publicness, Management Strategy, and Organizational Performance in Mental Health Treatment Facilities

In this study, the authors seek to identify mechanisms of publicness present within mental health treatment facilities and, subsequently, explore the constraints these mechanisms impose on facilities’ capacities to achieve public outcomes. Through grounded insights from senior managers in this field, political authority, namely through governmental funding and regulation, is identified by 43 of 46 respondents as being an influence on publicness. Authors then uncover the conditions during which publicness, in the form of political authority, constrains organizational achievement of public outcomes. In leveraging managerial perspectives, two distinct constraints emerged: publicness often inhibits organizational efficiency and produces mission drift within these facilities. Findings suggest that managers, under certain conditions (and where legally feasible), may provide greater effectiveness in fulfilling organizational goals and objectives and in achieving public outcomes by maintaining or decreasing an organization’s publicness. Fundamental to effectively managing publicness is understanding the mechanisms germane to both public outcome attainment and failure—the latter of which is explored here

Middle Columbia River Aquatic Nuisance Species Survey

Aquatic nonindigenous species (ANS) in the middle Columbia and lower Snake rivers were surveyed during the summer of 2006. The project area included eight reservoirs and the free-flowing, Hanford Reach on the Columbia River. We also conducted a literature review to create a complete list of ANS for the study area

Landfill Futures: : National Guideline Document

This report looks at the past and present roles of landfills in Australian waste management and considers the requirements for a sustainable future. The research used a test case to apply an integrated resource planning model to waste. The results suggest that disposal to landfill may be an expensive and less preferred option compared to others, in many cases, but still have a role to play in specific contexts where the costs of other options are higher