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Chapter 5 addresses a major demographic puzzle concerning thousands of New York slaves who seem to have gone missing in the transition from slavery to freedom, and the chapter questions how and if slaves were sold South. The keys to solving this puzzle include estimates of common death rates, census undercounting, changing gender ratios in the New York black population, and, most importantly, a proper interpretation of the 1799 emancipation law and its effects on how the children of slaves were counted in the census. Given an extensive analysis of census data, with various demographic techniques for understanding how populations change over time, I conclude that a large number of New York slaves (between 1,000 and 5,000) were sold South, but not likely as many as some previous historians have suggested. A disproportionate number of these sold slaves came from Long Island and Manhattan.
This paper investigates the effects of demographic shifts on labor productivity by leveraging variation in the age structure of Italian regions. These effects are analyzed along a first channel – the direct relation between population age and productivity – and a second channel capturing the productivity implications of a more or less dispersed age distribution. We propose an estimation framework that relates regional productivity to the entire age distribution of the working-age population and use instrumental variable techniques to address endogeneity issues. The estimates yield a hump-shaped age-productivity profile peaking between 35 and 40 years. We also document non-linear effects of regional age dispersion on productivity.
Original and deeply researched, this book provides a new interpretation of Dutch American slavery which challenges many of the traditional assumptions about slavery in New York. With an emphasis on demography and economics, Michael J. Douma shows that slavery in eighteenth-century New York was mostly rural, heavily Dutch, and generally profitable through the cultivation of wheat. Slavery in Dutch New York ultimately died a political death in the nineteenth century, while resistance from enslaved persons, and a gradual turn against slavery in society and in the courts, encouraged its destruction. This important study will reshape the historiography of slavery in the American North.
Elephants are a textbook example of slow-breeding megafauna, with extended periods of maternal investment and a long reproductive lifespan among both sexes. The unique reproductive physiology of females gives rise to the uniquely proboscidean phenomenon of “musth” among males, a rut-like breeding state. This chapter examines how female reproductive constraints and life histories impose constraints on males, who in turn must trade off the need to forage with the need to breed. These dueling motivational states give rise to tactics that vary at different life history stages. Tusks, another iconic feature of elephants, may be thought to offer competitive advantages, but the case is not so clear when one considers their liabilities. The chapter concludes by contrasting the demographic pressures on elephants due to habitat loss, conflict, and hunting, and the possible hidden costs that might influence the viability of elephant populations.
This chapter demonstrates the crucial role of geographic proximity in shaping agrarian and herding relations in the history of late Ottoman Kurdistan, including regional political economy, socioeconomic structures, and intercommunal relations. It argues that the region is marked by three distinct ecological zones, which differ from each other in terms of elevation, climate, vegetation, and both human and animal habitation. The chapter then shows the encroachment of the Ottoman state through the arrival of Tanzimat reforms and the multifaceted consequences this had in the region. Next, it illustrates a demographic portrait of the region, depicting how human beings brought different ecosystems into conversation with one another. It argues that pastoralism sustained the conversation between geographic zones into the nineteenth century, creating linkages and slippages between mountains, pastures, and plains, and defining the interaction between the three zones until these links began to weaken in the face of a series of environmental crises. The chapter concludes with a glimpse into five villages from different parts of the region.
For decades, researchers have tried to identify ecological and biological correlates of longevity, often using life expectancy and maximum lifespan as the gold standards. The recent increase in demographic data collected in non-model species has also led researchers to develop alternative metrics of longevity, especially in comparative analyses (e.g. 90% longevity). As a result, studies focused on longevity rely on heterogeneous statistical methodologies and use a variety of longevity metrics that are not always clearly defined. This lack of clarity has led to confusion in the interpretation of results and makes it difficult to compare results across studies. This chapter discusses the statistical interpretation of each metric and highlights potential biases associated with the missus of longevity metrics; conducts a systematic review of the various longevity metrics used across the scientific literature and analyses the content of scientific articles on longevity using topic modelling methodology; and illustrates, using two examples, the importance of selecting the appropriate metric based on the research question. Based on these insights, it provides a list of recommendations aimed at helping researchers to think carefully about the choice of metrics when studying longevity.
Humans live longer today than ever before. The remarkable rise in longevity occurred in a brief period of human history, roughly since the eighteenth century, and was driven by persistent efforts against epidemics, famines, health insecurity and chronic diseases. This chapter covers essential concepts regarding this extraordinary achievement for the human race, such as the demographic transition model, distinguishable from the earlier Neolithic demographic transition, which both led in their unique way to substantial alterations in the cause and age distribution of deaths. To account for the shift in disease patterns over time, the concept of epidemiological transition was originally proposed by Abdel Omran in the early 1970s and later evolved into broader conceptual frameworks, including the health transition. The chapter concludes by briefly addressing whether increased human longevity is matched by improved health and its future sustainability.
This chapter analyzes the major trends in late Ottoman Gaza’s economy, society, and geostrategic importance. It tackles the misconception that during this period Gaza was a city in “decline.” It discusses a wide range of topics such as the impact of early globalization and the change in the hajj pilgrimage route on the status of Gaza as a caravan city; the impact of the barley boom in the Northern Negev between 1890 and 1910 as a result of the growing demand of Britain’s beer industry on Gaza’s economy; the city’s lack of a proper port infrastructure and its implications; the Ottoman government state-building measures and division of the region’s administrative borders, the establishment of Beersheba to reduce Gaza’s influence on the Bedouins of the Negev, and the governmental development plans envisioned for the Gaza region; the extensive relationships between Gaza and Egypt, including the effects of the occupation of Egypt by Britain in 1882 and the creation of the administrate dividing line between Egypt and Palestine in 1906 on Gaza’s geostrategic importance. Finally, it explores whether the Young Turk Revolution of 1908 constituted a turning point in Gaza’s importance in the eyes of the central government and how it affected the city’s development.
Studies concerning twins with a sociological focus are scarce in Hungary as well as international research, although the number of twin births has increased dramatically worldwide. The raising and education of twins are tasks demanding special attention from both the family and institutions. In our study we examine these aspects, looking back from adulthood, using the narrow scope of the available data from research based on the ‘Hungarostudy 2021’ database (N total: 7000; n twins: 106). Our results, corresponding to the hypotheses of educational sociology, demonstrate how the relationships between family size and school career and increasing number of siblings reduces the chances of high educational attainment. A regression analysis confirmed that both the number of siblings and a later position in the birth order reduces the chance of obtaining a higher education. For the second child in a family, the chance of earning a university degree is reduced to to 0.743. The role of a large family concerning higher education showed a stronger relationship in the case of twins compared to nontwins. For twins, the sibling pattern has a decisive effect in educational attainment. Twins themselves have a 1.449 times higher chance of obtaining a higher education compared to nontwins (p = 0.101), and fraternal twins have half (0.517) the chance of obtaining a higher education compared to identical twins; but both results are not significant (p = 0.156).
Reintroduction includes the captive propagation and movement of extirpated animals or plants into areas of historical and native distribution. Many biotic or abiotic factors can affect a founder population when small numbers are released into unfamiliar novel environments, particularly at the early stage of reintroduction. The inclusion of behavioural and ecological components plays a crucial role in the decision-making process of endangered species conservation efforts such as reintroduction. Since the resident population of Oriental Storks Ciconia boyciana was locally extirpated in South Korea in 1971, its founders have been established through reintroduction since 2015. The aim of this study was to investigate the demography, habitat use, and movement patterns of stork founders using the first two-year demographic and tracking data. Stork founders maintained their population size, which slightly increased in the long term. The patterns of habitat use and movement depended on rice paddy fields for foraging and breeding along with mixed effects of breeding status and season. Considering ecological and life history-related perspectives, we also discuss the potential adaptiveness of founder Oriental Storks as a resident population in a novel environment in South Korea.
In this chapter we explore the textual and material evidence for the transformation of the city of Antioch in northern Syria from the seventh through ninth centuries. Through observations of the environmental shocks, including the Justinianic Plague, which first arrived in AD 542, as well as the effects of a series of major earthquakes, we assess demographic changes that likely accompanied these events. Following this, we explore some possible reconstruction of the population of Antioch and its hinterland. In the early medieval period, a reassessment of the material evidence, read together with descriptions from medieval texts, demonstrates that a level economic and social activity, probably significantly exceeding previous estimates, persisted through the ‘Dark Ages’ of the seventh-ninth centuries.
Chapter 2 focuses on establishing and motivating the empirical puzzle that motivates this study. I present descriptive data to document that reclassification is indeed taking place, and to lay to rest simple explanations that might account for this change. I then shift to motivate the puzzle theoretically. I situate these patterns against the well-established expectations of anthropological and sociological literatures, which emphasize how discrimination and stigmatization have long incentivized whitening, or at least lightening. Zooming out further, I situate these patterns historically, arguing that the recent reclassification reversal should be understood as simply the latest development in the evolution of racial subjectivity and state policy that has spanned three centuries in Brazil.
Political factions at Carthage cannot be identified beyond a simple polarity: supporters and opponents of Hannibal’s family, ‘Barcids’ and ‘anti-Barcids’. At Rome, the richer naming system has encouraged prosopographic studies, conjectures about political alliances based on kinship, marriage ties, and shared local origins. But more than temporary existence of such ‘groups’ is doubtful. It is also disputed whether Republican Rome was any sort of democracy: Polybius controversially claimed that tribunes of the plebs were there to do the people’s will. In the second Punic war, where we rely on Livy, elections do not look very democratic, but there is a special and temporary reason for this: demography. Casualties in the 218−216 disasters produced a top-heavy senate for years to come. The trials of the Scipios (180s) do not support the idea of groups but rather exemplify the ruling class’s concern to prevent ambitious individuals from upsetting a competitive equilibrium.
Contraceptive side effects are consistently given as the main reason why women are dissatisfied with contraception or choose not to use it. However, why some women suffer more from side effects remains unknown. Through inductive analysis of in-depth interviews and focus group discussions with 40 contraceptive users and 3 key informants in Central Oromia, Ethiopia, we explored women’s rationales for variation in side-effect experiences. The data first reveal the wide diversity in type and severity of side-effect experiences reported by users of contraception. Second, we found that women’s rationales for why some individuals suffer more side effects from contraception invoke economic and physical hardship (food insecurity and heavy workloads), as well as interindividual differences in biology (one’s blood must ‘fit’ with contraception). Finally, the analysis revealed the tension many women face in trying to negotiate the trade-off between the consequences of these side effects and those of an unwanted pregnancy. The results show the value of using a biosocial approach, which centres women’s voices and experiences, for informing the measurement of contraceptive side effects within population health surveys and clinical trials. Additionally, the findings help gain an understanding of how an individual’s social, biological, and cultural contexts drive variation in when and why different side effects manifest.
As seemingly cognate sub-genres of history, the history of sexuality and women’s history have a complicated relationship. Both tell 1970s origins stories from global north liberation movements, despite the scholarly scrutiny of sexuality and women in earlier historical periods. Core journals and publications reveal these sub-fields’ distinctive, sometimes incommensurate development trajectories. Perhaps due to their recent advent, presentism is clear in both, with the corollary of a marked post-1800 skew of most research and publications. Women’s history tracks women, in all their subdivisions, of necessity with focus upon sexualities in many registers, while seeking address of race, indigeneity, ethnicity, and international and global foci. Alternatively, the history of sexuality prioritizes sexual minorities and erotic alterities, welcoming studies of identities, expression, and representation. Key themes are transgressive resistance against repression and heteronormativity, entailing special concentration on same-sex history. Women figure within these themes, while innovative feminists are influential historians of sexuality. Nonetheless, women’s history and feminist analysis of sexualities have no default standing for the history of sexuality. In short, intellectual, methodological, and political properties prove less reciprocal than might be presumed. These exciting areas of history should evolve, to illuminate crucial topics for both, for instance reproduction. As both pursue aims to incorporate all historical periods and regions, their interconnections may become stronger.
Population and Irish confessional demographics feature heavily in Swift’s political pamphlets. His writing on these topics helped shape popular perceptions of Ireland in the eighteenth century, a period that witnessed the emergence of an Irish diaspora across the British Atlantic world. This chapter considers the role that confessional demography played in Swift’s Irish political writings and the later influence of those writings on the formation of early anti-Irish nativism in colonial America. This first section looks at the role of demographic anxieties in A Modest Proposal. The second section addresses Swift’s concerns about religious dissent in Ireland. The third and final section explores the influence of Swift’s writings in colonial America.
Detecting factors causing the decline of wildlife populations provides essential knowledge for their effective conservation. Populations of Black Stork Ciconia nigra are decreasing in northern Europe; however, there are no detailed analyses of its survival, which frequently is a key demographic parameter affecting population dynamics in long-lived species. We used long-term data from re-sighted colour-ringed birds and satellite-tracked birds to estimate age- and sex-specific survival in a rapidly declining Black Stork population in the Baltic region at the northern end of the European range. Apparent survival (0.89) among colour-ringed birds older than one year was not significantly different from the previously reported estimates in Central Europe and the estimated real survival of GPS-tracked birds (0.77). However, the apparent survival of first-year (1y) birds was only 0.04, which is remarkably lower than earlier estimates in Central Europe. The real survival of GPS-tracked 1y birds was somewhat higher (0.11), but still much lower than estimates in other long-lived species. Apparent survival was three times lower in 1y females (0.013) than 1y males (0.045); this could be explained in part by a higher mean natal dispersal of females (189.1 km), compared with that of males (72.0 km), as well as by sex-specific mortality due to poor foraging conditions. There were no significant differences in apparent survival between the male and female storks older than one year. To better address the population decline, further research is needed to determine the factors causing low survival in young Black Storks, including the roles of food availability and climate change.
Although still prevalent in many human societies, the practice of cousin marriage has precipitously declined in populations undergoing rapid demographic and socioeconomic change. However, it is still unclear whether changes in the structure of the marriage pool or changes in the fitness-relevant consequences of cousin marriage more strongly influence the frequency of cousin marriage. Here, we use genealogical data collected by the Tsimane Health and Life History Project to show that there is a small but measurable decline in the frequency of first cross-cousin marriage since the mid-twentieth century. Such changes are linked to concomitant changes in the pool of potential spouses in recent decades. We find only very modest differences in fitness-relevant demographic measures between first cousin and non-cousin marriages. These differences have been diminishing as the Tsimane have become more market integrated. The factors that influence preferences for cousin marriage appear to be less prevalent now than in the past, but cultural inertia might slow the pace of change in marriage norms. Overall, our findings suggest that cultural changes in marriage practices reflect underlying societal changes that shape the pool of potential spouses.
Edited by
Jeremy Koster, Max Planck Institute for Evolutionary Anthropology, Leipzig,Brooke Scelza, University of California, Los Angeles,Mary K. Shenk, Pennsylvania State University
At its core, human behavioral ecology is a demographic science. Its central currency – fitness – is defined by demographic parameters, as are many outcomes of interest to behavioral ecologists. This chapter introduces the basic parameters that define the field of demography, emphasizing their utility both for testing hypotheses of interest to behavioral ecologists and for describing the ecological contexts that situate behaviors. The chapter is structured along the lines of many demography textbooks, describing fertility, mortality, and migration – the three key parameters used to understand population structure and change. We describe how these parameters relate to evolutionary fitness and how each may be used as predictors or outcomes in hypothesis testing in behavioral ecology. Given the importance of using demographic outcomes to test human behavioral ecological theory, the chapter concludes that human behavioral ecologists strongly benefit from familiarity with demographic methods, data sources, and literature. Familiarity with demography can also produce insights that contribute to novel, or more nuanced, theory.
The Aztecs represent a complex, class-based civilization, characterized by culturally diverse practices encompassed by the Nahuatl-speaking peoples of the Basin of Mexico region and its surrounding areas. The subject of much misinformation, the clash between Aztec peoples and Spaniards, provoked by the Spanish invasion, gave rise to an immense number of written sources. Native-authored, hybrid, and Spanish-authored texts all must be carefully considered, but the translation of a still-growing number of texts in the Nahuatl language has provided insights Spanish-language texts cannot. Other kinds of evidence about the Aztecs and how their ideas and identities survived also exist, including material remains and ethnographic evidence. While the word “Aztec” is used in several ways, I use “Mexica” in this book for the peoples of Tenochtitlan and Tlatelolco, either “Excan tlatoloyan” (Tribunal of three) or “Triple Alliance” for the expansive confederation of the late Postclassic period, and “Aztec” for the linguistically and culturally related peoples of the Basin of Mexico region to highlight the variety of ethnicities that constituted Aztec peoples. A brief early history from the time of the migrations into the Basin of Mexico to the founding of Tenochtitlan by the Mexica, guided by their deity Huitzilopochtli, also is covered.