Over the past five decades, ecologists and archaeologists have dismantled two longstanding theoretical constructs. Ecologists have rejected the “balance of nature” concept and archaeologists have dispelled the myth that indigenous people were “in harmony with nature”. Rejection of these concepts poses critical challenges to both fields as current disciplinary approaches are inadequate to grapple effectively with real‐world complexities of socioecological systems. In this review, we focus on the relationship between human action and ecosystem change by examining some of the long‐term impacts of prehistoric agriculture. Using an interdisciplinary approach, we present results from two studies that suggest that even relatively non‐intensive and short‐term agriculture can transform ecological systems for a very long time. It is therefore imperative that ecologists and archaeologists work more closely together, creating a truly cross‐disciplinary alliance that will help to advance the fields of archaeology and ecology.

Collapse and abandonment dominate the popular literature on prehistoric societies, yet we know that reorganization is a more common process by which social and ecological relationships change. We explore the process of reorganization using the emerging perspective of resilience theory. Ecologists and social scientists working within a resilience perspective have argued that reorganization is an important component of long-term adaptive cycles, but it remains understudied in both social science and ecology. One of the central assumptions to emerge from the resilience perspective is that declines in the diversity of social and ecological units contribute to transformations in social and ecological systems. We evaluate this assumption using archaeological data, which offer an opportunity to investigate a time span rarely examined in studies of resilience and reorganization. We focus on the 11th to 13th century in the eastern Mimbres area of southwestern New Mexico, a period within which a substantial reorganization occurred. Much is known about the regional-scale changes that resulted in the depopulation of nearly every large village in the Mimbres region, what some have referred to as the “Mimbres collapse.” Our analyses examine both continuity and change in aspects of house- and village-level reorganization.

Researchers in different parts of the southwestern United States continue to debate whether the end of the Basketmaker period coincides with a general shift from supplemental to intensive maize agriculture across the U.S. Southwest. In some areas this transition appears to have occurred earlier, with heavy reliance on agriculture appearing by the Basketmaker II period. In this study, evidence from dental caries in southwestern Colorado populations supports the latter view, suggesting that Basketmaker subsistence in this area included a heavy reliance on agricultural products. Dental caries frequencies in both Basketmaker and post-Basketmaker samples are well within the expected range for full-time agriculturalists. Although there is no significant association between time period and caries rate, frequencies of interproximal caries and numbers of carious teeth per individual may indicate maize-processing differences between samples obtained from the two temporal periods. Differences in the intensity of maize production, rather than consumption, may contribute to the current lack of agreement on the timing of Southwestern agricultural dependence.

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