The Austronesian settlement of the remote island of Madagascar remains one of the great puzzles of Indo-Pacific prehistory. Although linguistic, ethnographic, and genetic evidence points clearly to a colonization of Madagascar by Austronesian language-speaking people from Island Southeast Asia, decades of archaeological research have failed to locate evidence for a Southeast Asian signature in the island's early material record. Here, we present new archaeobotanical data that show that Southeast Asian settlers brought Asian crops with them when they settled in Africa. These crops provide the first, to our knowledge, reliable archaeological window into the Southeast Asian colonization of Madagascar. They additionally suggest that initial Southeast Asian settlement in Africa was not limited to Madagascar, but also extended to the Comoros. Archaeobotanical data may support a model of indirect Austronesian colonization of Madagascar from the Comoros and/or elsewhere in eastern Africa.

This paper presents the results of a consensus-driven process identifying 50 priority research questions for historical ecology obtained through crowdsourcing, literature reviews, and in-person workshopping. A deliberative approach was designed to maximize discussion and debate with defined outcomes. Two in-person workshops (in Sweden and Canada) over the course of two years and online discussions were peer facilitated to define specific key questions for historical ecology from anthropological and archaeological perspectives. The aim of this research is to showcase the variety of questions that reflect the broad scope for historical-ecological research trajectories across scientific disciplines. Historical ecology encompasses research concerned with decadal, centennial, and millennial human-environmental interactions, and the consequences that those relationships have in the formation of contemporary landscapes. Six interrelated themes arose from our consensus-building workshop model: (1) climate and environmental change and variability; (2) multi-scalar, multi-disciplinary; (3) biodiversity and community ecology; (4) resource and environmental management and governance; (5) methods and applications; and (6) communication and policy. The 50 questions represented by these themes highlight meaningful trends in historical ecology that distill the field down to three explicit findings. First, historical ecology is fundamentally an applied research program. Second, this program seeks to understand long-term human-environment interactions with a focus on avoiding, mitigating, and reversing adverse ecological effects. Third, historical ecology is part of convergent trends toward transdisciplinary research science, which erodes scientific boundaries between the cultural and natural.

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This study explores whether child growth has signalled periods of social change between the Medieval Islamic and post‐Islamic Christian Periods in Santarém, Portugal. The social change is associated with the Christian conquest of Iberia and the fall of the Islamic Empire in Europe, which ceased the regional influence of the Golden Age of Islam. This may have caused a deterioration in living conditions brought by the Christian conquest, compared with the social improvements brought by the Medieval Islamic Empire. Forty‐two juvenile skeletons were taken from three Medieval Islamic and three Late Medieval Christian sites excavated in the city of Santarém, Portugal. Age was estimated from tooth length. Linear growth for all long bones and appositional growth of the femur midshaft were compared with expected growth from the Denver Growth Study, using z scores. Significant growth deficit was found throughout the Medieval Islamic and Christian Periods in Santarém, as well as a deficit in apposition of cortical bone. Although children in the post‐Islamic Christian period showed a trend towards greater linear and appositional growth deficits, these differences were not statistically significant. Children in Medieval Islamic and Late Medieval Christian Periods show significant growth disruption, suggesting that in Santarém, the post‐Islamic Medieval Christian period may not have witnessed a decrease in living conditions after the fall of Islamic rule in the territory. Further studies that incorporate more samples from the Islamic and Post‐Islamic Periods as well as pre‐Islamic population samples are needed to explore the possibility that the Islamic Period was more favourable for child growth.