Ancient Maritime Fish-Traps of Brittany (France): A Reappraisal of the Relationship Between Human and Coastal Environment During the Holocene

The present-day maritime landscape of Western France forms the geographical framework for a recent research project dedicated to the archaeological study of ancient fish-traps, combining regional-scale and site-scale investigations. Based on the compilation and exploitation of a large unpublished dataset including more than 550 sites, a preliminary synthetic study allows us to present some examples of synchronic and thematic approaches, and propose a morphological classification of the weirs. These encouraging first results open up new perspectives on fish-trap chronology closely linked to wider studies on Holocene sea-level changes.     

Law and Disorder: Local Implementation of Mongolia's Land Law

With the dismantling of herding collectives in Mongolia in 1992, formal regulatory institutions for allocating pasture vanished, and weakened customary institutions were unable effectively to fill the void. Increasing poverty and wealth differentiation in the herding sector, a wave of urban–rural migration, and the lack of formal or strong informal regulation led to a downward spiral of unsustainable grazing practices. In 1994, Mongolia's parliament passed the Land Law, which authorized land possession contracts (leases) over pastoral resources such as campsites and pastures. Implementation of leasing provisions began in 1998. This article examines the implications of the Law's implementation at the local level, based on interviews with herders and officials in all levels of government, and a resurvey of herding households. Amongst many findings, the research shows that poorer herders were largely overlooked in the allocation of campsite leases; that the poor had become more mobile and the wealthy more sedentary; that there had been a sharp decline in trespassing following lease implementation, but that many herders and officials expected pasture leasing to lead to increased conflict over pastures. The Land Law provides broad regulatory latitude and flexibility to local authorities, but the Law's lack of clarity and poor understanding of its provisions by herders and local officials limit its utility. The existing legal framework and local attitudes stand in clear opposition to the implied goal of land registration and titling — an all‐embracing land market and the supremacy of private property rights.     

The early roman imperial AES coinage II: Tracing the copper sources by analysis of lead and copper isotopes—copper coins of Augustus and Tiberius*

Lead and copper isotopes of Roman Imperial copper coins (denominations as and quadrans) were analysed by MC–ICP–MS. We concentrated on well‐dated coins minted at the official mint of Rome under the Emperors Augustus and Tiberius (between 16 bc and ad 37). The lead isotope results were compared with published lead isotope data of ore bodies from the Aegaean, Cyprus, Italy and Spain, in order to fingerprint the sources of Roman copper. During the Augustan period the main copper supply, as judged from the copper coins, is from Sardinia and south‐east Spain, with minor contributions from Tuscany. Except for Tuscany, this continued into the Tiberian period, when Cypriot copper also appears. Augustan quadrantes and late Tiberian asses came solely from the Rio Tinto area in south‐west Spain. Copper isotopes were applied here for the first time to systematic archaeometric studies. They are supplementary to lead isotopes and allow further grouping and classification of the copper coins.     

The Dynamics and Volatility of Commercial and Residential Property Prices: Theory and Evidence*

Abstract. This article investigates the dynamics of property prices and their interaction with output growth in a general equilibrium model. Closed form solutions and testable hypotheses are derived from a mildly restricted version of the model. The testable hypotheses are broadly supported empirically. In particular, (1) the volatility of commercial property prices is higher than that of residential property prices, (2) each of the lagged, contemporary, and forward commercial property prices is positively correlated with residential property prices, (3) the contemporaneous covariance between the two property prices is larger than the lagged covariance, and (4) output growth is positively correlated with both property prices. These results are consistent with simulations results that are based on a more general specification of the model.     

The Impact of Migration on Wages: Empirical Evidence from French Youth*

Abstract. This paper deals with the impact of migration on wages. We introduce a spatial dimension into the job search framework, so that the agent faces neither the same job offer distribution nor the same search costs when looking for a job inside his local labor market. This is in comparison to the agent searching outside his local labor market, where migration costs are a factor. We estimate wage equations in which we introduce the decision to migrate as a binary choice, and later as a polychotomic choice (stayer/mover from provinces to Paris/mover from provinces to provinces). We find no selection effect for people with low levels of education, and a positive selection effect for highly educated migrants. When we distinguish the migration destination for highly educated from provinces, we find a hierarchical effect, that is, the selection effect is higher for men who migrate to Paris than for those who migrate to other provinces.     

Regional Externalities And Growth: Evidence From European Regions*

Abstract. This paper models externalities of production across regional economies. Under the assumption that knowledge diffuses without political or administrative barriers, we derive externalities that affect the steady state and the process of growth of each economy. The empirical counterpart of the reduced form equation summarizing the process of growth allows us to test for the presence of regional spillovers and to measure their magnitude. Our results for a sample of European regions show that spillovers are far from negligible, are robust to the consideration of variables within each region, and may cause nondecreasing returns at the spatial aggregate level. The paper also relates previous empirical evidence on spatial dependence in growth studies to the externalities modeled here.     

Economic interdependence and international interactions: the impact of country size on political conflict and cooperation

The trade–conflict model claims that one state, designated as the ‘actor’, is deterred from initiating conflict against a trading partner, designated as the ‘target’, for fear of losing the welfare gains associated with trade. This article extends the trade–conflict model to examine the effect of country size on the trade gains among countries. We derive three propositions with regard to international interactions that pertain to the links between trade, conflict and country size. These hypotheses all imply that a country with an improvement in its terms of trade with a large country will decrease conflict more than it would with an improvement in its terms of trade with a small country. A 30‐country sample from the Conflict and Peace Data Bank (COPDAB) is used for empirical tests. The empirical analyses support the derived hypotheses. The model predicts that a country's ability to influence domestic consumption in a trading partner is an important determinant of international interactions.