Slavery and warfare were inextricably intertwined in the history of Britain’s North American colonies and, subsequently, the early republic. Yet this deep connection has not been acknowledged in the historiography. In particular, the debate about an “American way of war” has neglected the profound significance of slavery as a formative factor in America’s “first way of war.” Here, these two forms of organized, systemic violence are considered not merely within a comparative framework but as phenomena whose relationship is so deeply enmeshed that they cannot be meaningfully understood in isolation. Slavery is thus placed centrally in an examination of American war making, from the colonial to the antebellum period. Three main areas are highlighted: slave raiding against Native Americans, slavery as a factor in imperial and national strategy-making and diplomacy, and slavery as an “internal war.”

A paleontological deposit near San Clemente de Térapa represents one of the very few Rancholabrean North American Land Mammal Age sites within Sonora, Mexico. During that time, grasslands were common, and the climate included cooler and drier summers and wetter winters than currently experienced in northern Mexico. Here, we demonstrate restructuring in the mammalian community associated with environmental change over the past 40,000 years at Térapa. The fossil community has a similar number of carnivores and herbivores whereas the modern community consists mostly of carnivores. There was also a 97% decrease in mean body size (from 289 kg to 9 kg) because of the loss of megafauna. We further provide an updated review of ungulates and carnivores, recognizing two distinct morphotypes of Equus, including E. scotti and a slighter species; as well as Platygonus compressus; Camelops hesternus; Canis dirus; and Lynx rufus; and the first regional records of Palaeolama mirifica, Procyon lotor, and Smilodon cf. S. fatalis. The Térapa mammals presented here provide a more comprehensive understanding of the faunal community restructuring that occurred in northern Mexico from the late Pleistocene to present day, indicating further potential biodiversity loss with continued warming and drying of the region.

The aim of the study reported in this Research Communication was to analyse the variations of milk cortisol concentrations in response to the relocation of dairy cows between production groups. Milk cortisol measured during 3 consecutive days did not vary significantly in cows without environmental perturbation. However, relocation of cows caused a significant increase of cortisol in milk starting from the first milking after the group change. This suggests that cortisol in milk can be a suitable biomarker to assess the HPA response of dairy cows to a short/medium-term environmental challenge.

Drawing primarily on archival material such as plantation records, this article places the figure of the plantation overseer at the centre of the drama of the American Revolution in the southern colonies. Occupying a contested liminal space within colonial society, between rich and poor, and between the free and the unfree, the overseer was not necessarily the ne'er-do-well of conventional stereotype. This “Predatory War,” however, tested the overseer's loyalties and sense of duty to the fullest extent. Understanding his role in the conflict offers a significant insight into the experience of a plantation society at war. In particular the overseer was caught in the tension between elite and yeomanry, between the conflicting calls of loyalism and the cause of the Patriots. Perhaps most significantly of all he stood at the forefront of the defence of race slavery during the tumult of civil conflict.

Little research has addressed the impacts of invasive-species establishment on native forest insect communities. Such information is lacking even for gypsy moth, Lymantria dispar (L.) (Lepidoptera: Erebidae), the most thoroughly studied invasive forest insect. We investigated the ecological impacts of gypsy moth on native species at sites in north-central Ontario, Canada, with and without significant histories of gypsy moth defoliation over a 2-year period. Patterns in native forest caterpillar communities are described using measures of species diversity and multivariate analysis. We documented a transition from low-level to dominant gypsy moth populations. Sites with different gypsy moth outbreak histories exhibited differences in rank-abundance distributions and dominance structures in the first year of the study; by the second year, gypsy moth was dominant at sites of both types irrespective of their previous defoliation history. Contrary to our predictions, we found that gypsy moth outbreak history had no significant effects on native caterpillar community diversity or structure. However, sites with currently high gypsy moth abundance demonstrated significant shifts in late-season caterpillar community structure. Our results suggest that observed community differences were due to the presence of a highly abundant folivore, and not to permanent shifts in the native community because of the introduction of an invasive species.

Monozygotic (MZ) twins may be discordant for complex traits due to differential environmental exposure in utero, epigenetic variability in imprinting, X chromosome inactivation, or stochastic effects. Occasionally MZ twins may be discordant for chromosomal and single gene disorders due to somatic mosaicism. For complex traits, which are due to the interactive effects of multiple genes and environmental factors, the affected twin of a discordant MZ pair offers the possibility for identifying somatic mutations in candidate genes. DNA sequencing of candidate genes in discordant MZ twins can identify those rare etiologic mutational events responsible for the different phenotypes since the confounding effects of common single nucleotide polymorphisms are eliminated, as DNA sequences should be identical in MZ pairs. In this report we describe the extensive DNA sequencing of 18 candidate genes in a sample of MZ and dizygotic (DZ) twins with nonsyndromic cleft lip with or without cleft palate. We were unable to identify any somatic differences in approximately 34 Kb of DNA sequenced in 13 MZ pairs, for a total of approximately 900 Kb of sequence comparisons, supporting the hypothesis that nonetiologic posttwinning mutations are rare. While no etiologic variants were identified in this study, sequence comparisons of discordant MZ twins can serve as a tool for identifying etiologic mutations in clefting and other complex traits.

Federally funded projects must comply with a suite of environmental federal regulations, including the National Historic Preservation Act of 1966 and the US Department of Transportation Act of 1966, which are addressed through the National Environmental Policy Act process. In this case study, we describe a Federal Highway Administration sidewalk improvement project implemented by the Georgia Department of Transportation in DeKalb County, Georgia, that used an innovative streamlined process under the National Historic Preservation Act of 1966 to evaluate and assess effects on historic resources and to comply with National Environmental Policy Act process. This project also represents a novel use of this Streamlined Section 106 Process, since it was used in a new sidewalk construction project that required right-of-way acquisition and easements as compared to previous projects where this streamlined process was used only in cases with existing sidewalks and no right-of-way acquisition. Additionally, we demonstrate how coordination under the National Environmental Policy Act addressed impacts on historic resources and resulted in the successful preservation of cultural resource features.

Environmental Practice 12:134–143 (2010)