John M. Marston

Modeling Resilience and Sustainability in Ancient Agricultural Systems

Abstract The reasons why people adopt unsustainable agricultural practices, and the ultimate environmental implications of those practices, remain incompletely understood in the present world. Archaeology, however, offers unique datasets on coincident cultural and ecological change, and their social and environmental effects. This article applies concepts derived from ecological resilience thinking to assess the sustainability of agricultural practices as a result of long-term interactions between political, economic, and environmental systems. Using the urban center of Gordion, in central Turkey, as a case study, it is possible to identify mismatched social and ecological processes on temporal, spatial, and organizational scales, which help to resolve thresholds of resilience. Results of this analysis implicate temporal and spatial mismatches as a cause for local environmental degradation, and increasing extralocal economic pressures as an ultimate cause for the adoption of unsustainable land-use practices. This analysis suggests that a research approach that integrates environmental archaeology with a resilience perspective has considerable potential for explicating regional patterns of agricultural change and environmental degradation in the past.

Scholarly motivations to conduct interdisciplinary climate change research

Understanding and responding to today’s complex environmental problems requires collaboration that bridges disciplinary boundaries. As the barriers to interdisciplinary research are formidable, promoting interdisciplinary environmental research requires understanding what motivates researchers to embark upon such challenging research. This article draws upon research on problem choice and interdisciplinary research practice to investigate motivators and barriers to interdisciplinary climate change (IDCC) research. Results from a survey on the motivations of 526 Ph.D.-holding, early- to mid-career, self-identified IDCC scholars indicate how those scholars make decisions regarding their research choices including the role of intrinsic and extrinsic motivations and the barriers arising from the nature of interdisciplinary research and institutional structures. Climate change was not the main motivation for most respondents to become scholars, yet the majority began to study the issue because they could not ignore the problem. Respondents’ decisions to conduct IDCC research are driven by personal motivations, including personal interest, the importance of IDCC research to society, and enjoyment of interdisciplinary collaborations. Two thirds of respondents reported having encountered challenges in communication across disciplines, longer timelines while conducting interdisciplinary work, and a lack of peer support. Nonetheless, most respondents plan to conduct IDCC research in the future and will choose their next research project based on its societal benefits and the opportunity to work with specific collaborators. We conclude that focused attention to supporting intrinsic motivations, as well as removing institutional barriers, can facilitate future IDCC research.

Intensive agriculture and land use at Roman Gordion, central Turkey

Few archaeobotanical studies of Roman agricultural practices and their environmental impact in Anatolia (modern Turkey) have been published. New data from Roman levels at Gordion, a multi-period urban centre in central Anatolia, indicate that free-threshing wheat, most likely Triticum aestivum (bread wheat), was the focus of agricultural practice, in contrast to earlier periods when a more diverse agricultural system included greater amounts of barley and pulses. Evidence for increased levels of irrigation and wood fuel use relative to dung, along with regional overgrazing, provide further evidence for significant change in land-use practices during the Roman period. The emphasis on T. aestivum cultivation coupled with extensive grazing had significant environmental implications, leading to severe overgrazing and soil erosion on a regional scale. Historical sources and limited data from other Roman period sites suggest that similar patterns of agriculture may have been practiced across central Anatolia during the Roman period. We propose that this may have been due to externally imposed demands for taxation or military tribute in the form of wheat, and conclude that these demands led to the adoption of an unsustainable agricultural system at Gordion.

Modeling the role of fire and cooking in the competitive exclusion of Neanderthals

The Neanderthal body was more robust and energetically costly than the bodies of anatomically modern humans (AMH). Different metabolic budgets between competing populations of Neanderthals and AMH may have been a factor in the varied ranges of behavior and timelines for Neanderthal extinction that we see in the Paleolithic archaeological record. This paper uses an adaptation of the Lotka-Volterra model to determine whether metabolic differences alone could have accounted for Neanderthal extinction. In addition, we use a modeling approach to investigate Neanderthal fire use, evidence for which is much debated and is variable throughout different climatic phases of the Middle Paleolithic. The increased caloric yield from a cooked versus a raw diet may have played an important role in population competition between Neanderthals and AMH. We arrive at two key conclusions. First, given differences in metabolic budget between Neanderthals and AMH and their dependence on similar or overlapping food resources, Neanderthal extinction is likely inevitable over the long term. Second, the rate of Neanderthal extinction increases as the frequency of AMH fire use increases. Results highlight the importance of understanding the variable behaviors at play on a regional scale in order to understand global Neanderthal extinction. We also emphasize the importance of understanding the role of fire use in the Middle to Upper Paleolithic transition.

Early- and middle-holocene wood exploitation in the Fayum basin, Egypt

The early and middle Holocene of North Africa was a time of dramatic climatic and social change, including rapid shifts in vegetation communities and the introduction of domesticated plants and animals. Recent research from the Fayum basin of Egypt, which holds archaeological evidence for early use of domesticates, aims to place inhabitants of that region within their contemporary environmental setting. We present here results of wood charcoal analysis from three early- and middle-Holocene deposits on the north shore of the Fayum and reconstruct both contemporary woodland ecology and patterns of anthropogenic wood use. In total, three woodland communities likely existed in the area, but inhabitants of this region made heavy use of only the local lakeshore woodland, emphasizing tamarisk (Tamarix sp.) for fuel. While seasonally watered wadi woodlands were not harvested for fuel, more arid locations on the landscape were, evidencing regional mobility between ecological zones. Results indicate that wood was locally abundant and that inhabitants were able to select only preferred species for fuel. This study provides further evidence for low-level food production in the Fayum that preserved critical ecosystem services, rather than dramatic niche construction to promote agriculture as seen elsewhere in middle-Holocene Southwest Asia.

Kara-tepe, Karakalpakstan: agropastoralism in a Central Eurasian oasis in the 4th/5th century A.D. transition

ABSTRACT This paper reports on the results of archaeological field excavations at the site of Kara-tepe, in the semi-autonomous region of Karakalpakstan in northwestern Uzbekistan. Investigations at the site in 2008–2009 turned up an unusually rich assemblage of remains from a household context. Combined analysis of the household botanical and faunal remains has allowed us to reconstruct the agropastoral practices of local inhabitants in this oasis region during a critical period of social and environmental change in the Early Medieval transition (4th–5th centuries a.d.). The results of the study raise important new questions about agropastoralism in the oases of Central Eurasia, highlighting continuities of practice between oasis and steppe populations, and revealing dynamic changes in these systems over time.

Rural agricultural economies and military provisioning at Roman Gordion (Central Turkey)

ABSTRACT Roman Gordion, on the Anatolian plateau, is the only excavated rural military settlement in a pacified territory in the Roman East, providing a unique opportunity to investigate the agricultural economy of a permanent Roman garrison. We present combined results of archaeobotanical and zooarchaeological analyses, assessing several hypotheses regarding Roman military provisioning. The garrison adapted its dietary preferences to local agricultural systems, but maintained its traditional meat supply of pork, beef, and chickens as well. There is evidence for economic interdependence with local farmers and cattle herders, self-sufficiency in pork and chicken production, and complex relationships with autonomous sheep and goat herders who pursued their own economic goals. If the Roman military in Gordion exercised a command economy, they were able to implement that control only on specific components of the agricultural sector, especially cereal farming. The sheep and goat herding system remained unaltered, targeting secondary products for a market economy and/or broader provincial taxation authorities. The garrison introduced new elements to the animal economy of the Gordion region, including a new pig husbandry system. Comparison with contemporary non-military settlements suggests both similarities and differences with urban meat economies of Roman Anatolia.