Settlement Patterns, Source–Sink Dynamics, and Artiodactyl Hunting in the Prehistoric U.S. Southwest

Numerous studies in the US Southwest suggest that prehistoric artiodactyl populations in areas of dense human settlement experienced population reductions which substantially reduced their availability to human hunters. Although most assemblages from villages in this region are dominated by lagomorphs, some settlements maintained greater access to artiodactyls. Factors influencing this variability include both local settlement history and settlement location relative to productive source areas for large game. In our study areas, source–sink dynamics likely contributed to the long-term resilience of hunted artiodactyl populations and allowed villagers continued access to animals moving in from source areas despite relatively rapid game depletion in heavily hunted areas immediately around villages.     

A history of transboundary storm water flows: flooding,tunnels, and the spatial incongruity of the U.S.–Mexico border

The benefits of transnational flows and the concern for national security have framed development in the U.S.–Mexico borderlands since the formative beginnings of both nations. As national discourses, trade and security work against each other in borderland spaces, the former requiring openings in the border, the later seeking to control it. This paper considers the material implications of these discourses on the border landscape with particular attention to historical boundary development, urbanization, and impacts of chronic flooding. It argues that material discursive dynamics not only constitute the contemporary landscape, but create spatial incongruities that influence the impacts of natural processes, such as storm water flow. Using the southern Arizona border as a case study, the paper uses archival research to explore the historical geography of chronic flooding in the twentieth century and the shift in dynamics of flooding due to border boundary build up.