12 research outputs found
A Saxon Fish Weir and undated fish trap frames near Ashlett Creek, Hampshire, UK: static structures on a dynamic foreshore
This is the author accepted manuscript. The final version is available from Springer Verlag via the DOI in this record.The remains of a wooden V-shaped fish weir and associated structures have been
discovered near Ashlett Creek on the tidal mudflats of Southampton Water in
Hampshire, southern Britain. Radiocarbon dating of oak roundwood stakes taken from
the main weir structure date it to the middle Saxon period. Clusters of as-yet undated
roundwood posts within the catchment area of the weir are interpreted as the frames
for fish traps that are assumed to pre- or post-date the operational period of the weir
itself. The weir is contemporary with wooden V-shaped fish weirs found elsewhere in
southern and central Britain, and also Ireland, but its circular catchment ‘pound’
remains restricted, in these islands, to the Solent and Severn estuaries: it has a close
parallel with another Saxon-era weir on the nearby Isle of Wight. It also shows
striking structural similarities with examples in use today in Basse Normandy, on the
southern shore of the English Channel. The paper discusses the function and operation
of the weir, and places it in its social and historical context. Regressive cartography
demonstrates that the structures have become exposed as a result of saltmarsh retreat
in this area of Southampton Water since the 19th century. The radiocarbon dates
returned for the posts demonstrate that this transgression of the marsh must have been
preceded by a prolonged period of progradation, which covered and preserved the
site; its subsequent re-exposure has negative implications for its survival.The fieldwork underpinning this research was carried out using equipment
and facilities provided by the Centre for Maritime Archaeology of the University of
Southampton. The authors themselves met incidental costs. Radiocarbon dating was
financed from an internal University of Exeter research allowance
Evolving importance of biologics and novel delivery systems in the face of microbial resistance
Methods to control infectious diseases in livestock are growing in importance. As the size of the average farm increases-for poultry, dairy and beef cattle, swine, and fish-the risk of rapid spread of infectious diseases increases as well. This increases the need for alternative methods of control of infectious agents. Improvements in specific immunogens, adjuvants, and delivery systems are needed to meet the demand for vaccines to ensure a healthy and safe meat supply. This article explores the challenges, trends, and recent advances in the control of infectious diseases through the use of biologics