Production risk,inter-annual food storage by households and population-level consequences in seasonal prehistoric agrarian societies

Abstract

Using complementary behavioural and population ecological models, we explore the role of production risk, normal surplus and inter-annual food storage in the adaptations of societies dependent on seasonal agriculture. We find that (a) household-level, risk-sensitive adaption to unpredictable environmental variation in annual agricultural yields is a sufficient explanation for the origins of normal agrarian surplus and, consequently, of household-level incentives for inter-annual food storage; and, (b) at the population level, density-dependent Malthusian processes tightly constrain the circumstances under which this same mechanism can be effective in smoothing inter-annual fluctuations in household food availability. Greater environmental variation and higher levels of fixed set-asides such as seed requirements or transfer obligations to political authorities lead to more severe, periodic famines; however, outside of famine events, these same factors improve average population welfare by suppressing population density to levels at which Malthusian constraints have lessened impact. The combination of behavioural and population ecological modelling methods has broad and complementary potential for illustrating the dynamic properties of complex, coupled human–natural systems.     

THE 2013 ANTIPODE RGS‐IBG LECTURE New Materialisms and Neoliberal Natures

The rise of non‐deterministic understandings of nature, with their emphasis on intensive difference and non‐linear processes, has occurred in conjunction with the neoliberalization of environmental governance, which at once emphasizes and financializes the inherent productivity of nature. This paper accepts the position that there is a link between the two, but argues that if we are to maintain a crucial ontological distinction between capital and non‐capital, this link must be understood as contingent rather than necessary. Drawing upon Deleuze and Guattari's concept of “universal history”, I argue that the neoliberalization of nature must be understood, in part, as the strategic containment of the critical energies of new materialist thought, and that the role of critical historiography is to recognize within processes of containment the contents and qualities of more radical possibilities. If such critical efforts are to succeed they must continually distinguish between nature's innovative force and the mechanisms that seek to capture this force in the service of capital and state. In turn, if we are to remember the radical potential of these ideas, the neoliberalization of nature must be understood as a response to these critical energies, and not their origin.     

Partnership Networks for Urban Development: How Structure is Shaped by Risk

In delivering public policy, governments worldwide increasingly partner with diverse sets of stakeholders. This spreads commercial risk, but particularly where agendas diverge, introduces new risks related to trust in relationships. The “risk hypothesis” distinguishes between networks for “cooperation” problems, where partners have high individual payoffs for uncooperative behaviors, and “coordination” problems, where partners subscribe to a common goal and uncooperative behaviors are less rewarding. We used mixed‐methods to study networks of local and state government, developers, and consultants that center on joint‐venture partnerships for developing new urban, residential projects. Statistical network methods showed that within the mix of partners involved in development projects, only state governments displayed structural patterns associated with solving “cooperation” problems (rather than coordination). In other words, the patterns of state government interactions showed they are most exposed to risky relationships. In contrast to the state governments’ apparent exposure to risk, qualitative data showed they are not only well trusted but also overall the partnership networks reported very low levels of conflict. By exploring the distribution of “cooperation” and “coordination,” we identified which stakeholders perceived most risk. In our case, how the state governments’ structure interactions in response to risky relationships leads to an overall network characterized by trust.     

Commercial conflict resolution across the religious divide in the thirteenth-century Mediterranean

Commercial conflict resolution in the medieval Mediterranean has been treated by a number of scholars in recent years, notably through the use of documents from the Cairo Geniza and the archives of the Italian port of Genoa. Recent research on this subject, and more specifically on contract enforcement, has focused on contract reinforcement within the Mediterranean Jewish community, largely because of the sources available. Parallels drawn with medieval Italian mechanisms of conflict resolution emphasize differences between public- vs. private-order responses, that is, the reliance on personalized groups in the Islamic world rather than on public institutions typical of the Italian port-cities. These studies do not, however, examine how commercial conflicts were resolved across religious and political lines, despite the growing role of Italian merchants in the trade networks of Islamic North Africa, a role that inevitably led to trade disputes and occasional uncollected payments. Through close textual analysis of 14 Latin and Arabic letters exchanged between Islamic Almohad Tunis and Christian Italian Pisa, this article explores how Almohad commercial agents and governmental authorities sought to maintain positive trade relations across the religious divide while protecting the interests of their own clients and citizens when disputes arose over commercial payments and debt collection. Rather than relying on commercial conflict resolution methods specific to one culture or the other, these documents reveal a middle ground of borrowed vocabulary and procedures. Through these letters, Almohad merchants and officials attempted to negotiate through the bonds of personal trust and reputation established with their Italian counterparts. However, they also appealed to Italian sensibilities with hybridized methods recognizable by the legal and public institutions of both cultures.     

Public Goods and the Derivation of Land Value Assessment Schedules within a Spatial Equilibrium Setting

A method of mapping the classic economic public good into a spatial realm is identified. Within the spatial equilibrium land use model an ideal government distributes a public good; sets mill rates, assesses land, and collects property taxes; and maintains a balanced budget. Equilibrium is brought about within the household sector by the unfolding of the land value schedule both over space and in response to the public sector. The household and public sectors are mutually within a steady state when there is no excess demand or supply of public good. The model is extended to elucidate Tiebout's hypothesis that government activity is reflected in land values. Also, a criterion for judging fairness of the spatial equilibrium assessment schedule is presented and applied.