Understanding Of Human Adaptation Research Articles

Human Bodies in Extreme Environments

Human habitation and adaptation to extreme environments have a deep history in anthropological research. Anthropologists’ understanding of these ecological pressures and how humans respond to them has grown substantially over the last 100+ years. This review covers long-standing knowledge on adaptation to classic extreme conditions of heat, cold, and high altitude, while also updating the areas in which recent research has broadened our understanding of human adaptation, acclimatization, and resilience. Unfortunately, the intersecting stresses of structural inequality and climate change have made these extremes more extreme, with drastic negative impacts on health and well-being. Future research will need to explore how extreme environments, structural inequality, and climate change are embodied as well as mitigated so that humans are better prepared to face a rapidly changing world.

Environment, climate and people: Exploring human responses to climate change

In 2004, the Journal of Anthropological Archaeology published Julie Field’s “Environmental and climatic considerations: a hypothesis for conflict and the emergence of social complexity in Fijian prehistory”, where she combined climate and environmental data to investigate the relationship between social patterns of change in the context of variability. Field tackled a complex issue: how societies respond to climate and environmental change that could cause unpredictable impacts on subsistence and settlement systems. Much progress has been made towards the understanding of human adaptations or responses to climate change since that paper was published. Here I reflect on the issues put forth by Field and consider how archaeology can engage with other interdisciplinary sciences and contribute to the understanding of human responses to environmental change. Two topics are emphasized: climate and environmental change, and social behavior in the context of that change. When attempting to identify how climate change affects a society, it is necessary to downscale climate to the specific location in consideration (space) during the time-period during which the relevant society lived (time) and in the context of their past experiences of climate (traditional knowledge). We face an unprecedented climate crisis and archaeology can contribute to the identification of solutions.

The immunogenetic impact of European colonization in the Americas.

The introduction of pathogens originating from Eurasia into the Americas during early European contact has been associated with high mortality rates among Indigenous peoples, likely contributing to their historical and precipitous population decline. However, the biological impacts of imported infectious diseases and resulting epidemics, especially in terms of pathogenic effects on the Indigenous immunity, remain poorly understood and highly contentious to this day. Here, we examine multidisciplinary evidence underpinning colonization-related immune genetic change, providing contextualization from anthropological studies, paleomicrobiological evidence of contrasting host-pathogen coevolutionary histories, and the timings of disease emergence. We further summarize current studies examining genetic signals reflecting post-contact Indigenous population bottlenecks, admixture with European and other populations, and the putative effects of natural selection, with a focus on ancient DNA studies and immunity-related findings. Considering current genetic evidence, together with a population genetics theoretical approach, we show that post-contact Indigenous immune adaptation, possibly influenced by selection exerted by introduced pathogens, is highly complex and likely to be affected by multifactorial causes. Disentangling putative adaptive signals from those of genetic drift thus remains a significant challenge, highlighting the need for the implementation of population genetic approaches that model the short time spans and complex demographic histories under consideration. This review adds to current understandings of post-contact immunity evolution in Indigenous peoples of America, with important implications for bettering our understanding of human adaptation in the face of emerging infectious diseases.

An Early Holocene Lithic Assemblage from Dibé Rockshelter, South-Central Ethiopia

Abstract The dearth of securely dated assemblages in the Horn of Africa limits a comprehensive understanding of human adaptation across the Early Holocene. This paper presents results from initial analyses of lithic material from Dibé rockshelter in the Arsi lowlands, Ethiopia. Radiocarbon dates confirm occupation of Dibé rockshelter by hunter-gatherers directly following improved climatic conditions marking the onset of the Holocene. Microliths dominate both the surface and excavated sub-assemblages. Micro-burins and Levallois items are present, although more frequent as surface finds. Regionally available siliceous rocks were extensively exploited, with greater variety in the older occupation layers signifying differential access to raw material sources and/or wider foraging ranges. Largely similar reduction patterns and toolkits across the sampled sequence imply continuity in lithic tradition. This, coupled with the total absence of finds commonly associated with early food production, suggests that Dibé was abandoned during one of the abrupt arid episodes of the Early/Mid-Holocene.

The northern fluted point complex: technological and morphological evidence of adaptation and risk in the late Pleistocene-early Holocene Arctic

Analyses of fluted point technology and Paleoindian technological risk have contributed to our understanding of human adaptation across North America in the late Pleistocene and early Holocene. However, poor chronological control has dissuaded similar studies of fluted points found in Alaska and northern Yukon and our understanding of their adaptive role in early arctic adaptations remains unclear. Two new archeological sites have provided reliable radiocarbon data and for the first time, a comprehensive analysis of northern fluted points is possible. Here, technological and morphological analyses of northern fluted points are presented, including variables statistically evaluated and compared to a collection of fluted Folsom artifacts serving as a reference. Variation in tool shape was measured using geometric morphometrics, and a new approach to landmark placement designed to characterize basal morphology and allow the analysis to include tool fragments is presented. Results confirm that northern fluted points represent a cohesive technological strategy and are used to formulate hypotheses suggesting its service as a risk-management system promoting ease-of-replacement-after-failure to offset transport costs and reduce risk during long-distance travel.

Balancing De Jure and De Facto Arctic Environmental Law Applied to the Oil and Gas Industry: Linking Indigenous Rights, Social Impact Assessment and Business in Greenland

What will take place in the Arctic in the next decade will have consequences for us all, as the changing of the “Albedo effect” is altering the global climate, disrupting many equilibria both in the ecosystem and in the social sphere. Changes in the Arctic will not stay in the Arctic, but will affect the rest of the planet. The need to exploit resources, the emergence of new actors in the Arctic and the discovery of abundant oil, gas, mineral and renewable energy resources mean that we have to literally rethink and reconstruct the “Arctic” as a concept. Huge promises are made, but big questions are also raised about how we are to rethink and regulate our “blue planet.” A new regulatory framework is thus inevitable. This article deals with the social aspects of the climate change’s effects and the understanding of human adaptation to climate change by explaining how the problem of exploration and exploitation of oil and gas and their use by indigenous people are strictly interconnected with Social Impact Assessment (SIA) and environmental protection. The article focuses on the social dimension of climate change coupled with business development of oil and gas firms in the Arctic with Greenland as a case study to illustrate opportunities and tensions affecting the indigenous Greenlandic people. Some conclusions are drawn with the formulation of recommendations on the urgent need for direct participation of Arctic indigenous people in the decision-making policy creation on environmental protection measures and culture and advice on how to implement such recommendations. A solution to implement such recommendation would be to develop an interdisciplinary research programme to be implemented through an interdisciplinary research centre susceptible to be turned into an international organization after a certain period of working activity at the academic level.

Archaeological Paleobiogeography in the Russian Far East: The Kuril Islands and Sakhalin in Comparative Perspective

This article presents analyses of lithic and zooarchaeological data from the Kuril Islands and Sakhalin Island in the Russian Far East to better understand the effects of island isolation and biodiversity on human settlement and subsistence. Using the theory of island biogeography, we examine predictions about lithic raw material use, trade, mobility, and foraging behavior for different island groups. This study finds convincing evidence that insularity imposed significant constraints on prehistoric maritime hunter-gatherer access to lithic raw materials and foraging targets in this part of the North Pacific. We find that lithic raw materials are constrained in their distribution and conserved in more insular areas, while zooarchaeological taxonomic composition and richness data pattern according to expectations from optimal foraging theory applied across islands of variable biogeographic diversity. While based on limited samples, the results of these analyses provide support for a biogeographical approach to the prehistory of islands and add to our understanding of human adaptation in the Sea of Okhotsk.