skip to main content

Attention:

The NSF Public Access Repository (PAR) system and access will be unavailable from 11:00 PM ET on Thursday, January 16 until 2:00 AM ET on Friday, January 17 due to maintenance. We apologize for the inconvenience.


Title: Wealth inequality in the prehispanic northern US Southwest: from Malthus to Tyche
Persistent differences in wealth and power among prehispanic Pueblo societies are visible from the late AD 800s through the late 1200s, after which large portions of the northern US Southwest were depopulated. In this paper we measure these differences in wealth using Gini coefficients based on house size, and show that high Ginis (large wealth differences) are positively related to persistence in settlements and inversely related to an annual measure of the size of the unoccupied dry-farming niche. We argue that wealth inequality in this record is due first to processes inherent in village life which have internally different distributions of the most productive maize fields, exacerbated by the dynamics of systems of balanced reciprocity; and second to decreasing ability to escape village life owing to shrinking availability of unoccupied places within the maize dry-farming niche as villages get enmeshed in regional systems of tribute or taxation. We embed this analytical reconstruction in the model of an ‘Abrupt imposition of Malthusian equilibrium in a natural-fertility, agrarian society’ proposed by Puleston et al . (Puleston C, Tuljapurkar S, Winterhalder B. 2014 PLoS ONE 9 , e87541 (doi:10.1371/journal.pone.0087541)), but show that the transition to Malthusian dynamics in this area is not abrupt but extends over centuries This article is part of the theme issue ‘Evolutionary ecology of inequality’.  more » « less
Award ID(s):
2122123
PAR ID:
10437694
Author(s) / Creator(s):
; ; ; ;
Date Published:
Journal Name:
Philosophical Transactions of the Royal Society B: Biological Sciences
Volume:
378
Issue:
1883
ISSN:
0962-8436
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. null (Ed.)
    Rural life in México has changed drastically over the past several decades in the wake of structural reforms in the 1980s and the North American Free Trade Agreement (NAFTA) implemented in 1994. Researchers predicted dire consequences for smallholder farmers following trade liberalization and in certain respects the prophecies have been fulfilled. Indeed, many regions experienced significant out-migration as smallholders, unable to compete with global maize imports without price subsidies, sold or abandoned their lands, making way for the expansion of industrial agriculture into forests, secondary vegetation and primary crops. Nevertheless, many smallholders have adapted to the new economic environment with farming systems that manage risk by diversifying portfolios to incorporate commercialized maize and livestock production. This article examines the evolution of smallholder farming systems since the mid 1980s, when the impact of neoliberal reforms emerged, using data collected from field research on 130 smallholder farms in the Pátzcuaro Lake Watershed (PLW) in the State of Michoacán. Farmers in the PLW have been characterized as traditional peasant farmers, planting crops for subsistence, including a diverse array of domestic maize varieties and practicing limited animal husbandry with chickens, turkeys, pigs, an oxen and a cow or two for milk. But the results presented in this article show that the traditional peasant farming systems in the region have changed substantially to a highly diversified agriculture-cattle-forest system. Most notable changes include the use of fertilizers and pesticides; and the increase in livestock herd and reorientation to beef production. The results demonstrate the resilience of smallholder farmers, while at the same time raising potential concern that increased reliance on livestock and beef production specialization, might lead to shifts in farming systems that replace domestic maize varieties with hybrid corn used primarily for animal feed and thereby leaving vulnerable the genetic reservoir of traditional maize landraces. 
    more » « less
  2. The application of geochemical sourcing methods to archaeological questions continues to grow, as does the need for innovation in applying these methods. The process of sourcing materials is to rule out potential areas in favor of the most likely origin. It will foreseeably remain true that additional data could reveal other potential sources for an artifact. However, the use of multiple methods to further refine potential sources should not be neglected. In this paper, we use maize niche modeling in tandem with isotopic data to refine possible source regions of archaeological deer from Chaco Canyon, NM, USA (ca. AD 800–1250). Previous research on this prehistoric community demonstrated an extensive non-local procurement system where small mammals were garden-hunted in plots lying > 40 km from the canyon and the procurement of deer from upper elevations at > 90 km. The upper elevation procurement of deer will be tested by adding carbon isotopes and maize niche modeling to previously published strontium and oxygen isotopic data. As browsers with an affinity for maize, deer harvested in low to mid elevations within the maize farming niche should have carbon isotope ratios reflecting C4 plant consumption. Growing degree days in this region place the most salient limits on the elevation of maize production and define the region corresponding to a maize-free diet. Analyses of archaeofaunal deer from Pueblo Bonito indicate that hunting occurred at a higher elevation than the maize farming niche. These results demonstrate the utility of combining geochemical sourcing methods with paleoenvironmental modeling. 
    more » « less
  3. null (Ed.)
    ABSTRACT Historical inequality is difficult to measure, especially at the subcountry level and beyond the top income shares. This article presents new evidence on the level of inequality in Manhattan from 1880 to 1910 using housing rents. Rental prices and characteristics, including geocodable locations, were collected from newspapers and provide extensive geographic coverage of the island, relevant for the overwhelming majority of its population where renting predominated. This provides a measure of consumption inequality at the household level, which helps to develop the picture of urban inequality for this period, when income and wealth measures are scarce. For large American cities, but particularly for New York, housing made up a large share of consumption expenditure and its consumption cannot be substituted, so this is a reliable and feasible way to identify the true trends in urban inequality across space and time. 
    more » « less
  4. Abstract Objectives

    The extreme condition that we address in this special issue is how people adapt to rapid change, which in this case study is instigated by globalization and the process of market integration. Although market integration has been underway for centuries in some parts of the world, it often occurs precipitously in small‐scale societies, initiating an abrupt break with traditional ways of life and fostering a keen sense of uncertainty.

    Methods

    Using cross sections from 30‐years of data collected in a Yucatec Maya subsistence farming community, we test the expectation that when payoffs to pursue new livelihood and reproductive options are uncertain, variance in social, economic, and reproductive traits will increase in the population. Our data span the transition from subsistence farming to a mixed economy, and bridge the transition from natural to contracepting fertility. Exposure to globalizing and market forces occurred when a paved road was built in the early 2000s.

    Results

    We find that livelihood traits (a household's primary economic strategy, amount of land under cultivation, amount of maize and honey sold), become more variable as new, but uncertain options become available. Variance in levels of education and family size likewise immediately increase following the road, but show signs of settling back down a decade later. Rather than replacing one way of life with another, Maya farmers conservatively adopt some new elements (family planning, wage labor), until the tradeoffs to commit to smaller families and the labor market become clearer.

    Conclusion

    Our findings highlight that in rapidly changing environments when the payoffs to assimilate new options are uncertain, some households and individuals intensify what they know best, while others adopt new opportunities, driving variance up in the population.

     
    more » « less
  5. The black-white gap in household wealth is large and well documented. Here, we visualize how this racial wealth gap persists across generations. Animating the flow of individuals between the relative wealth position of parents and their adult children, we show that the disadvantage of black families is a consequence both of wealth inequality in prior generations and race differences in the transmission of wealth positions across generations: Black children both have less wealthy parents on average and are far more likely to be downwardly mobile in household wealth. By displaying intergenerational movements between parental and offspring wealth quintiles, we underline how intergenerational fluctuation coexists with the maintenance of a severely racialized wealth structure. 
    more » « less