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UID/HIS/04666/2013 ; This article presents a comparative analysis of the port systems of the Portuguese and British Empires in the Atlantic during the seventeenth and eighteenth centuries. It is based on the study of four insular ports under the sovereignty of these two imperial polities: Angra in the Azores, Funchal in Madeira, Bridgetown in Barbados, and Port Royal in Jamaica. The aim of the analysis is to compare the main factors that led to the choice of these sites as key places in the structure of the respective Portuguese and British imperial models, how they developed to satisfy trade needs and their most significant problems, as well as the extent to which the development of these colonies conformed to what was 'expected' of each imperial project, taking into account the geographical, economic and social factors of the respective port cities. The methodological approach to the study of these Atlantic insular ports brings together data from landscape archaeology, nautical and underwater archaeology, together with historical documentation and cartography. ; publishersversion ; published

Extraordinarily wealthy and influential, Stephen Duncan (1787-1867) was a landowner, slaveholder, and financier with a remarkable array of social, economic, and political contacts in pre-Civil War America. In this, the first biography of Duncan, Martha Jane Brazy offers a compelling new portrait of antebellum life through exploration of Duncan's multifaceted personal networks in both the South and the North. Duncan grew up in an elite Pennsylvania family with strong business ties in Philadelphia. There was little indication, though, that he would become a cosmopolitan entrepreneur who would own over fifteen plantations in Mississippi and Louisiana, collectively owning more than two thousand slaves. With style and substance, Martha Jane Brazy describes both the development of Duncan's businesses and the lives of the slaves on whose labor his empire was constructed. According to Brazy, Duncan was a hybrid, not fully a southerner or a northerner. He was also, Brazy shows, a paradox. Although he put down deep roots in Natchez, his sphere of influence was national in scope. Although his wealth was greatly dependent on the slaves he owned, he predicted a clash over the issue of slave ownership nearly three decades before the onset of the Civil War. Perhaps more than any other planter studied, Duncan contradicts historians' definition of the southern slaveholding aristocracy. By connecting and contrasting the networks of this elite planter and those he enslaved, Brazy provides new insights into the slaveocracy of antebellum America.

Little research has been undertaken on the conservation value of natural and derived native grasslands within the Hunter Valley region of New South Wales. In part, this is due to a lack of rigorous survey and classification of grassland habitats, but also because of the ease with which past studies have deferred to the concept of 'derived grasslands' to describe grassland areas. Given the extent of European occupation of the Hunter Valley over the past 200 years, all grasslands have been impacted upon in one way or another by agricultural activities, and hence all can be considered 'derived'. For one site in the upper Hunter Valley, classification and mapping of grasslands was undertaken using data collected over three Spring seasons from 2009 to 2011, encompassing over 1,000 ha of derived grassland habitat within a wider mosaic of forest and woodland. Numerical classification of 168 sampling plots (each 0.01ha in size) delineated 17 floristic groups (16 communities, one with two sub-communities). Based on the composition of component taxa, 8 of these can be considered primarily of exotic origin, while the remaining 9 are predominantly native. All grasslands have been shaped by past agricultural activities, and all have been collectively referred to previously as derived grasslands. Plant species of significance within the grasslands include the threatened terrestrial orchids Diuris tricolor and Prasophyllum petilum, the threatened forbs Swainsona recta and Thesium australe, and the rare but localised grass Bothriochloa biloba. An additional 19 taxa occur at or extend known distributional limits. The lack of an appropriate existing framework with which to assign conservation value to grasslands in the Hunter complicates any assessment of significance. However, considerable diversity is present within grasslands collectively referred to as 'derived', and effort should be applied in future studies to elucidate community patterns more satisfactorily. Within State and Federal threatened species legislation, there ...