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The Ancient Agroecology of Perry Mesa: Integrating Runoff, Nutrients, and Climate

Part of the Legacies on the Landscape project

Author(s): Melissa Kruse-Peeples

Year: 2013

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Summary

Understanding agricultural land use requires the integration of natural factors,

such as climate and nutrients, as well as human factors, such as agricultural

intensification. Employing an agroecological framework, I use the Perry Mesa landscape, located in central Arizona, as a case study to explore the intersection of these factors to investigate prehistoric agriculture from A.D. 1275-1450. Ancient Perry Mesa farmers used a runoff agricultural strategy and constructed extensive alignments, or terraces, on gentle hill slopes to slow and capture nutrient rich surface runoff generated from intense rainfall. I investigate how the construction of agricultural terraces altered key parameters (water and nutrients) necessary for successful agriculture in this arid region. Building upon past work focused on agricultural terraces in general, I gathered empirical data pertaining to nutrient renewal and water retention from one ancient runoff field. I developed a long-term model of maize growth and soil nutrient dynamics parameterized

using nutrient analyses of runoff collected from the sample prehistoric field. This model resulted in an estimate of ideal field use and fallow periods for maintaining long-term soil fertility under different climatic regimes. The results of the model were integrated with estimates of prehistoric population distribution and geographical characterizations of the arable lands to evaluate the places and periods when sufficient arable land was available for the type of cropping and fallowing systems suggested by the model (given the known climatic trends and land use requirements). Results indicate that not only do dry climatic periods put stress on crops due to reduced precipitation but that a reduction in expected

runoff events results in a reduction in the amount of nutrient renewal due to fewer runoff events. This reduction lengthens estimated fallow cycles, and probably would have increased the amount of land necessary to maintain sustainable agricultural production. While the overall Perry Mesa area was not limited in terms of arable land, this analysis demonstrates the likely presence of arable land pressures in the immediate vicinity of some communities. Anthropological understandings of agricultural land use combined with ecological tools for investigating nutrient dynamics provides a comprehensive understanding of ancient land use in arid regions.


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Cite this Record

The Ancient Agroecology of Perry Mesa: Integrating Runoff, Nutrients, and Climate. Melissa Kruse-Peeples. Doctoral Dissertation. arizona state university, School of Human Evolution and Social Change. 2013 ( tDAR id: 406189) ; doi:10.6067/XCV808676B


Keywords


Temporal Coverage

Calendar Date: 1200 to 1450


Spatial Coverage

min long: -112.162; min lat: 34.079 ; max long: -111.907; max lat: 34.296 ;

Individual & Institutional Roles

Contributor(s): Arizona State University, Department of Anthropology

Landowner(s): Bureau of Land Management


File Information

  Name Size Creation Date Date Uploaded Access
Kruse-Peeples-2013.pdf 22.00mb Jul 18, 2016 9:00:10 AM Public
Arizona State University The Andrew W. Mellon Foundation National Science Foundation National Endowment for the Humanities Society for American Archaeology Archaeological Institute of America