The ‘Portus Project’ investigates the social and economic contexts of the maritime port of Imperial Rome. This article presents the results of analysis of plant, animal and human remains from the site, and evaluates their significance for the reconstruction of the diets and geographic origins of its inhabitants between the second and sixth centuries AD. Integrating this evidence with other material from the recent excavations, including ceramic data, the authors identify clear diachronic shifts in imported foods and diet that relate to the commercial and political changes following the breakdown of Roman control of the Mediterranean.

The paper is a bibliographical and critical survey of the archaeological research on ancient Ostia and Portus in the decade 2004–2014. The first part deals with some general themes, such as cults, architectural typologies and urban history, decoration: wall-paintings, mosaics and marble, the guilds and their seats, trades, etc. The second part is a survey of individual monuments and buildings which have been the subject of recent excavations and interpretations. The critical problem of late antique Ostia is treated separately, as well as the archaeology of Isola Sacra and Portus, with the Imperial harbours.