A palaeodietary investigation of carbon (C/C) and nitrogen (N/N) in human and faunal bones from the Copper Age cemeteries of Varna I and Durankulak,Bulgaria

Stable isotope analyses have been applied to human and faunal bone collagen from the Varna I and Durankulak cemeteries to explore palaeodietary adaptations in the Neolithic and Eneolithic (Copper Age). The results suggest both populations primarily utilised terrestrial, C₃-based diets, despite their proximity to the Black Sea. The wider δ¹⁵N range of the Durankulak humans likely indicates the differential utilisation of terrestrial meat sources, which is probably related to the degree to which primary and/or secondary ovicaprid products were consumed, particularly since ovicaprid δ¹⁵N values differ from other herbivores. The isotopic distribution of Varna I reflects a linear relationship between δ¹⁵N and δ¹³C, suggesting that a minority of individuals enriched in both isotopic parameters supplemented their diets with marine resources. These burials include the well known ‘chieftain’ (burial 43) and show notable material wealth by way of grave goods. At the population level, however, there is no significant correlation between stable isotope values and material wealth at Varna I, a fact with implications for theories regarding emergent social/economic hierarchies in Balkan prehistory. Five burials at Durankulak were found to have relatively enriched δ¹³C and δ¹⁵N values with respect to the rest of the population. These burials reflect a prominently marine-based or mixed terrestrial C₃-based diet that included C₄ inputs, possibly from millet, for which the limitations of stable isotope analysis on bulk collagen are not able to differentiate. AMS dating has shown that these burials belong to a much later period.     

How real estate became ‘just another asset class’: the financialization of the investment strategies of Dutch institutional investors

The managers of a growing wall of money are continuously searching for investment opportunities. The financialization literature describes how this mobile capital puts pressure on commodities, debt, public services and economic activities to transform into investable, tradable, financial products. Regarding real estate, these investigations show how opaque, local, non-standardized goods, highly depending on both local legislation and developments, have been transformed into liquid, globally traded financial assets. By analysing the real estate investment strategies of Dutch institutional investors since the 1980s, this paper shows how a quantitative framework increasingly provides the basis for institutional investors’ real estate investment strategies. Direct ownership of properties has been exchanged into shares of properties, that is, fictitious capital, creating an impetus for ‘objectified numbers’ to measure the performance of these indirect investments. As knowledge about real estate has been outsourced, Dutch institutional investors now perceive real estate increasingly as ‘just another asset class’, thereby increasing leverage and volatility. This paper not only shows how finance ‘financialized’ itself by adopting a quantitative investment perspective, but it also offers an empirical account on how investment properties are transformed into financial assets that put pressure on state agencies to mobilize urban planning to deliver more of such assets.     

Why Land Here? Ports and Harbors in Southeast Tanzania in the Early Second Millennium AD

The east African Swahili ports developed extensive maritime trading links around the Indian Ocean, and supported economic, political, and urban growth in the early second millennium AD. This article identifies ports of varying function and importance in SE Tanzania, and seeks to understand their development in the context of natural harbor advantage, boat technology, sailing practice, and resource needs. Field data from landing places are combined with weather patterns, historical documents, and oral traditions to provide an integrated survey of the ports and harbors that once sustained medieval commerce along this section of the Swahili coast. The emergence of Kilwa as an entrepôt to become the key center is based initially upon its naturally advantageous harbor facilities, safety and flexibility of approach in days of sail, and assurance of monsoon winds. Original natural advantages gradually become self-sustaining with its economic and political growth. To the north and south of Kilwa a series of ports of call with drinking water and boat servicing supported trade to and from the pre-eminent city, although some such as Kisimani Mafia and Kwale-Kisuju developed important trade functions of their own.