Nothing Lasts Forever: Environmental Discourses on the Collapse of Past Societies

The study of the collapse of past societies raises many questions for the theory and practice of archaeology. Interest in collapse extends as well into the natural sciences and environmental and sustainability policy. Despite a range of approaches to collapse, the predominant paradigm is environmental collapse, which I argue obscures recognition of the dynamic role of social processes that lie at the heart of human communities. These environmental discourses, together with confusion over terminology and the concepts of collapse, have created widespread aporia about collapse and resulted in the creation of mixed messages about complex historical and social processes

Hunting, Herding, and Caravanning: Osteometric Identifications of Camelid Morphotypes at Khonkho Wankane, Bolivia

Khonkho Wankane is a ceremonial center located in the southern Lake Titicaca Basin, Bolivia. During the Late Formative period (AD 1-500), its residents practiced agropastoral lifeways and participated in the rise of the state at Tiwanaku. Like at many Andean sites, bones from the family Camelidae are the most abundant large mammal in domestic contexts. Identifying camelid morphotypes represented by these bones carries far-reaching implications for understanding past hunting, herding, and caravanning practices, and their roles in larger social and economic webs. Identifications were based on a locally focused reference collection, including llamas (Lama glama) from the immediate vicinity of the site, as well as Andean guanacos (Lama guanicoe), a much smaller morphotype than the Patagonian guanacos used in many osteometric studies. Multivariate statistical analyses and incisor morphology identified all four camelid. Different analyses suggest that the crux of osteometry lies in the reference collection, not the statistical test. An additional, very large morphotype likely corresponds to a castrated llama, the preferred cargo animal among modern drovers. The presence of these animals is interpreted as evidence that groups hunted vicuña (Vicugna vicugna) and guanaco, which are not currently present around the site, herded llamas and alpacas (Vicugna pacos), and perhaps organized caravans with castrated llamas.Fil: Gasco, Alejandra Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo; ArgentinaFil: Marsh, Erik Johnson. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo; Argentin

Association of trauma exposure with proinflammatory activity: a transdiagnostic meta-analysis

Exposure to psychological trauma (for example, childhood/early life adversity, exposure to violence or assault, combat exposure, accidents or natural disasters) is known to increase one's risk of developing certain chronic medical conditions. Clinical and population studies provide evidence of systemic inflammatory activity in trauma survivors with various psychiatric and nonpsychiatric conditions. This transdiagnostic meta-analysis quantitatively integrates the literature on the relationship of inflammatory biomarkers to trauma exposure and related symptomatology. We conducted random effects meta-analyses relating trauma exposure to log-transformed inflammatory biomarker concentrations, using meta-regression models to test the effects of study quality and psychiatric symptomatology on the inflammatory outcomes. Across k=36 independent samples and n=14 991 participants, trauma exposure was positively associated with C-reactive protein (CRP), interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α (mean rs =0.2455, 0.3067, 0.2890, and 0.2998, respectively). No significant relationships were noted with fibrinogen, IL-2, IL-4, IL-8, or IL-10. In meta-regression models, the presence of psychiatric symptoms was a significant predictor of increased effect sizes for IL-1β and IL-6 (β=1.0175 and 0.3568, respectively), whereas study quality assessment scores were associated with increased effect sizes for IL-6 (β=0.3812). Positive correlations between inflammation and trauma exposure across a range of sample types and diagnoses were found. Although reviewed studies spanned an array of populations, research on any one specific psychiatric diagnosis was generally limited to one or two studies. The results suggest that chronic inflammation likely represents one potential mechanism underlying risk of health problems in trauma survivors