SEAFRONT

(Short-term and Extreme climates causing Agricultural risks at the FRontier Of the Neolithic Transition)

Welcome to the website of the SEAFRONT project, a research group awarded by the DFG under the Emmy-Noether programme for a six-year period, involving research collaborations between the Leibniz Research Institute for Archaeology and archaeologists in Greece, Spain, Denmark, Australia, and France.

Our research is concerned with bridging the gap between temporal and spatial scales of climatic changes and human responses. The decisions of prehistoric individuals were often based on how they perceived their immediate environment and can thus only insufficiently be connected to remote climate archives on decadal- or centennial scales (e.g. marine cores or glacial records).

We are tackling this problem in the context of the Neolithic Dispersal across the Mediterranean, when pioneering farmers were advancing to new shores with a variety of success. Climatic conditions and the resulting agricultural risks are one part of this success, but differences in spatial and temporal resolution make their immediate impact intangible.

This project is using seasonally resolved climatic data from within archaeological layers in the form of mollusc shells, and is thus directly accessing local weather conditions that were observable by prehistoric populations.
Using Laser Induced Breakdown Spectroscopy, we are aiming to analyse over 4,000 shells across 5 sites to provide robust climatic models from the bottom up and in stratigraphic context with other archaeological information.

The formal start of the project will be the 1st of February 2021 but job applications will be published in advance.
For any question related to the project, please get in touch via email or twitter (see contact details below).

News

5th International Sclerochronology Conference 2019 in Split

Following the recent advances of limpet research using LIBS in the Mediterranean, Amy Prendergast will present the results of the ACCELERATE project at the International Sclerochronology conference in the form of a poster. With the title ?Mediterranean limpets and Mg/Ca ratios Using LIBS to screen for SST changes and physiological effects? the poster summarises the method and outcomes of our limpet research and points towards improved sampling methods to increase sample numbers in seasonality research.

Analysing Mediterranean Limpets

In our study in Scientific Reports, we tested LIBS on modern limpet shells that were previously analysed by Amy Prendergast and Bernd Schöne using ?18O values and a high resolution sampling approach. With their large isotopic dataset and good knowledge of the shells? growth structure, we had a great starting point to compare Mg/Ca ratios with changes in sea surface temperature (SST).

Publications

Annual Growth Patterns and Interspecimen Variability in Mg/Ca Records of Archaeological Ostrea edulis (European Oyster) from the Late Mesolithic Site of Conors Island

The European Oyster has not recovered from these times at all and currently, researchers as well as industrial fisheries are trying to build up sustainable population sizes again. The problem with this large-scale endeavour is that we currently have only limited knowledge what such a population would look like in terms of its demography, life expectancy, or individual growth. Our article, presents a new way of determining archaeological oyster ages in a very quick and inexpensive way, so that we can access this information in many places around Europe and throughout time.

Extensive elemental mapping unlocks Mg/Ca ratios as climate proxy in seasonal records of Mediterranean limpets

Here, we show for the first time that extensive spatial mapping of multiple mollusc specimens using Laser Induced Breakdown Spectroscopy (LIBS) across a wider region can resolve enigmatic patterns within the elemental record caused by physiological influences.

Elemental mapping of Mg/Ca intensity ratios in marine mollusc shells using laser-induced breakdown spectroscopy

Here we employ an automated LIBS setup to map the Mg/Ca composition of whole shell sections with over 2000 data points per hour. By assessing the spatial variability of Mg/Ca intensity ratios this method has the potential to mitigate distorted results while increasing the resolution of derived palaeoenvironmental information.

This and other projects

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SeaFront

Short-term and Extreme climates causing Agricultural risks at the FRontier Of the Neolithic Transition

ACCELERATE

ArChaeological and Climatic data from ELEmental ratios using Rapid Analysis of shell carbonaTE

DISPERSE Project

Dynamic Landscapes, Coastal Environments and Human Dispersals.

Niklas Hausmann

Niklas Hausmann

Emmy Noether Group Leader

Römisch Germanisches Zentralmuseum (RGZM)

Niklas is a coastal archaeologist at the RGZM leading the Emmy Noether project SEAFRONT and specialises in the analysis of high-resolution climate archives found in mollusc shells.

Niklas did his PhD at the University of York as part of Geoff Bailey's ERC Project DISPERSE, where he studied the mobility and subsistence strategies of coastal populations in the southern Red Sea. His research on the seasonal consumption of shellfish, which had led to the accumulation of over 3,000 shell middens on the Farasan Islands (Saudi Arabia), involved the analysis of oxygen isotope ratios to reconstruct past sea surface temperatures and to reveal seasons of mollusc collections.

This research led Niklas to move to Greece on a Marie Curie fellowship at the Institute of Electronic Structure and Laser, where he led the ACCELERATE Project. Within this project, he aimed to make the geochemical analysis of mollusc shells more efficient through the use of Laser Induced Breakdown Spectroscopy (LIBS).
His research now involves shells from all over the world including the UK, Denmark, Spain, Italy, Croatia, Greece, Turkey, Malta, Tunisia, Libya, Saudi Arabia, Oman, Japan, the Philippines, Tasmania, New Zealand, the US, Canada, and Brazil, with shells from the modern period as well as over 30,000 years old.