It took longer than expected, but the first batch of plant samples is finally here! They had an arduous journey if the state of the box is anything to judge by, but the samples themselves are in good shape and they don’t show signs of mold. I can start the preparatory processing right away, and I should have them ready for chemical processing by the end of next week.
The first steps in processing the samples are physical. The samples need to be frozen for a few hours and then freeze-dried for a couple of days. Each point on the map is represented by a set of three samples, so once the samples in each set are freeze-dried, they’ll be ground up and mixed together to create one homogenized sample. The homogenized samples will then be processed chemically before they’re analyzed for strontium.
Twelve sets of samples are already in the freezer and will be moved to the freeze dryer by the end of the day. Exciting progress!
Ci è voluto più tempo di quanto pensassimo, però il primo lotto di campioni di piante è finalmente arrivato! A giudicare dalle condizioni della scatola, il viaggio è stato difficile, ma i campioni sono in buone condizioni e non mostrano segni di muffa. Posso iniziare subito con la preparazione, e dovrebbero essere pronti per la lavorazione chimica entro la fine della settimana prossima.
I primi passi nella lavorazione dei campioni sono di tipo fisico: i campioni devono essere congelati per qualche ora, e quindi liofilizzati per un paio di giorni. Per ogni punto della mappa vi è un totale di tre campioni: dopo che ciascun gruppo è stato sottoposto a liofilizzazione, i campioni vengono frantumati e miscelati per creare un singolo campione omogeneizzato per ogni punto. I campioni omogeneizzati saranno trattati chimicamente prima di essere sottoposti all’analisi dello stronzio.
Dodici gruppi di campioni sono già nel congelatore e saranno processati al liofilizzatore entro la fine del giorno. Un ottimo passo avanti!
Grandi notizie per ZANBA: il primo lotto di campioni botanici per la mappatura isotopica della Sardegna centrale è in viaggio per Cardiff! Davide ha iniziato nel migliore dei modi il lavoro sul campo, avendo già raccolto i campioni da31 dei 137 punti totali.
Ciascuno dei 137 punti si trova all’interno di una particolare zona litologica, con le zone più grandi rappresentate da un numero maggiore di punti. Il campionamento consiste nel prelevare foglie da alberi e alti arbusti: questi campioni devono, quando possibile, provenire da tre specie diverse situate entro un raggio di 500 metri intorno ad ogni punto. Il prelievo di tre campioni per punto ci consente di eseguire un campionamento omogeneizzato: in questo tipo di campionamento, le foglie dei tre campioni vengono liofilizzate, macinate e accuratamente miscelate per creare un campione di laboratorio tale da rappresentare la variabilità nell’area intorno a ciascun punto. Il campionamento omogeneizzato ci aiuta inoltre a creare un isoscape più rappresentativo, che risulti quindi meno influenzato da eventuali anomalie relative ad uno dei campioni.
I campioni dovrebbero arrivare la prossima settimana: non vedo l’ora di entrare in laboratorio per iniziare a trattarli!
Great news for ZANBA – the first batch of botanical samples for isotope mapping central Sardinia is on its way to Cardiff! Davide has done an impressive job with the fieldwork, already collecting material for 31 of the 137 total points to be sampled.
Each of the 137 points is inside a particular lithological zone, with larger zones being represented by greater numbers of points. When Davide samples, he takes leaves from trees and large bushes: three different plants representing three different species (when possible) located within a 500 meter radius of each point. Taking multiple samples per point allows us to do homogenized sampling. In homogenized sampling, the leaves from the three samples will be freeze-dried, ground up, and carefully mixed to create a laboratory sample that captures the variability in the area around each point. Homogenized sampling helps us create a more representative isoscape – one that’s less negatively affected if any of the plants Davide samples happen to be outliers.
The samples should arrive sometime next week, and I can’t wait to get into the lab to start processing them!
È stata dura far decollare il progetto ZANBA nel bel mezzo di una pandemia, ma sono lieta di annunciare che le cose si stanno finalmente muovendo. È particolarmente emozionante accogliere nella squadra l’archeologo sardo Davide Schirru! La ricerca di Davide si è sinora svolta nell’area dello studio: questa vicinanza gli darà l’opportunità di raccogliere campioni vegetali provenienti da tutta la Sardegna centrale. Davide mi invierà questi campioni all’Università di Cardiff, dove li preparerò e analizzerò per studiarne i rapporti isotopici dello stronzio. Ancora una volta, l’importanza di un networkdi rapporti consolidato è dimostrata dalla sua capacità di rimuovere ostacoli e allo stesso tempo sostenere la nostra resilienza!
La precedente ricerca di Davide si è concentrata sull’archeologia del paesaggio di Sardegna nell’età del Bronzo. L’ottimo stato di conservazione dei paesaggi preistorici della Sardegna offre un’opportunità eccezionale per indagarne i sistemi insediativi e per condurre uno studio approfondito del rapporto uomo-ambiente. Davide è particolarmente interessato allo sviluppo di analisi in ambiente GIS (Geographical Information Systems, Sistemi Informativi Territoriali), così come di analisi statistiche e quantitative delle proprietà spaziali dei paesaggi archeologici, portandolo a sviluppare un parallelo interesse nei linguaggi di scripting e programmazione. Davide sta attualmente completando il suo dottorato di ricerca in archeologia preistorica presso l’Università La Sapienza di Roma.
It’s been tough getting ZANBA off the ground in the middle of a pandemic, but I’m delighted to announce that things are finally moving. It’s especially exciting to welcome Sardinian archaeologist Davide Schirru to the team! Davide’s ongoing research is based in the ZANBA study area, giving him the opportunity to collect plants from across the landscape of central Sardinia. Davide will send these plant samples to Cardiff University, where I will process them and analyze their strontium isotope ratios. Let’s hear it for the incredible power of networks to overcome obstacles and promote resilience!
Davide’s previous research has focused on landscape archaeology in Bronze Age Sardinia. The well-preserved prehistoric landscapes of Sardinia provide an exceptional opportunity to explore settlement systems and conduct a thorough study of the human-environment relationship. Davide is particularly interested in the development of GIS (Geographical Information Systems), statistical, and quantitative analyses of the spatial properties of archaeological landscapes, leading him to develop further interests in scripting and programming languages. Davide is currently completing his PhD in prehistoric archaeology at La Sapienza University of Rome.
In my last post, I highlighted archaeological research that showed that strong communities – local-level groups that worked together and maintained social ties – helped past societies weather major disruptions, delivering better outcomes for human health and prosperity and even helping sustain institutions above the local level. These are promising results for us, pointing to at least one practical way we can combat the effects of the pandemic. Working to support and maintain our communities now will help us come out of this pandemic in the strongest way we can. But the researchers’ conclusions also raise an obvious question – what are local communities doing or providing that contributes to their larger societies being resilient to a crisis?
There are dozens of books on resiliency from the past decade alone, but most focus on recent societies and institutions. Resiliency is a popular topic in archaeology as well, but many studies of resilience in the past focus on just one culture or time period. Here I will highlight an excellent cross-cultural study by Peter N. Peregrine, an anthropologist and archaeologist at Lawrence University. Peregrine examined 33 archaeologically known societies that weathered 22 environmental crises to test two hypotheses: did either local participation in decision-making or rigid social norms help human societies weather environmental crises? These two strategies have both been identified as sources of resilience in contemporary societies, but archaeology can test their utility in a broader range of cases. Again, the strength of Peregrine’s study is that it analyzes completely unrelated societies across large spans of time and space. As Peregrine puts it: “If a predictor of social resilience to climate-related disasters can be identified and applies to societies of varying scales and complexities throughout human history, then there is good reason to believe that it can be used to create interventions applicable today.”
Peregrine trained research assistants to code ancient societies that faced severe environmental crises according to where they fell on scales of “corporate-exclusionary” (level of participation in decision making) and “looseness-tightness” (enforcement of social norms). They also coded how resilient the societies were by evaluating seven variables – population, health and nutrition, conflict, household organization, village organization, regional organization, and communal ritual – both before and after the environmental crises occurred. You’ll notice how many of these variables are similar to those used by the LTVTP-NABO collaboration I highlighted in the previous post, reflecting the basic kinds of human well-being we hope to be able to maintain even in crisis situations.
Peregrine found a positive relationship between resilience to environmental crisis and high levels of participation in decision making*. When leadership was more fluid and open to input and action at local levels, societies were more resilient, maintaining higher levels of well-being throughout the crisis. Peregrine found the opposite for enforcement of social norms, however; societies with strict enforcement of social norms were less resilient to environmental crisis. For the diversity of cultures and over the long time scales studied by Peregrine, rigid codes of behavior were detrimental.
A pandemic doesn’t pose the same challenges as an environmental crisis, but the importance of Peregrine’s findings is still apparent. One factor in creating resilience is broad participation in local decision making and a willingness on the part of higher levels of government to listen to local voices. It makes sense that local people are the often the first to recognize how a crisis is affecting their particular community and that they are likely to have useful ideas for how the crisis needs to be handled to maintain well-being in their area. The current pandemic poses unprecedented hurdles for average citizens trying to participate in governance, but it is essential that we find ways. Making local decisions based on local input is key to maintaining our well-being.
* I prefer to feature open access research so everyone can read and evaluate the work for themselves, but if you happen to have access to academic journals, I recommend the following archaeological and historical study. It reaches conclusions similar to Peregrine’s regarding the role of local-level knowledge and participation in decision making for achieving sustainable soil use in case studies of ancient Mediterranean agriculture.
Butzer, K (2005) Environmental history in the Mediterranean world: cross-disciplinary investigation of cause-and-effect for degradation and soil erosion. Journal of Archaeological Science 32: 1773-1800.
Last week, I argued that archaeology has something useful to say in this time of Coronavirus. This may seem like a bold assertion, even to other academics. I wonder how many of my colleagues in economics, sociology, and psychology see archaeology as a social science like their own disciplines. I wonder how many people in general look at today’s problems – be they Coronavirus or climate change – and think “let’s ask the archaeologists.”
I’ll be the first to admit that my argument needs to be supported by evidence before anyone should take it seriously. So that’s what I intend to do: provide evidence that the broad human past gives us valuable insight into what we can and should do now. I’ll focus on open access studies that anyone can read, and I encourage everyone to read the originals and assess for yourselves whether these are good evidence for the contemporary relevance of archaeological insight.
My first piece of evidence is an article* by Michelle Hegmon and Matthew Peeples on behalf of the LTVTP-NABO collaboration. The Long- Term Vulnerability and Transformation Project (LTVTP) focuses on archaeological cases of social transformation in the arid and semi-arid United States Southwest and northern Mexico. The North Atlantic Biocultural Organization (NABO) focuses on cases that took place in the subarctic and arctic North Atlantic. Together, the LTVTP-NABO collaboration examined 18 examples of major social transformations as varied as the end of the Norse occupation of Greenland and the depopulation of the Mesa Verde region. The geographical, environmental, chronological, and cultural diversity of the cases studied suggests that any strong patterns probably hold true for human societies generally: that is, they point to specific ways that all human societies tend to respond to stress.
The researchers coded a broad set of variables, from institutional breakdown and depopulation to human securities**, migration, household organization, and changes in material culture (the archaeological catch-all term for “stuff”). The researchers then performed correspondence analyses among these different variables to identify meaningful relationships.
Their results are fascinating and the paper is worth a detailed read, but some of their conclusions feel particularly relevant in the current crisis. First, there is a strong relationship between the breakdown of institutions and a decline in human securities. No one is an island: nobody thrives when we let our sustaining institutions crumble. How we get food, how we receive medical care, and how we keep interpersonal violence in check are all embedded in institutional systems. If those systems fail, we’re likely to suffer. We’re witnessing severe stresses on some of our systems right now as they struggle to keep up with the demands created by the current pandemic.
The hopeful part of the study is that the researchers identified communities and community security as strong predictors that social transformation would be less painful. If communities remained strong – if they didn’t disintegrate under the weight of social transformations – people experienced less food insecurity, less interpersonal violence, and less death. The researchers also found a positive feedback loop – strong communities could bolster institutional security, preventing or dampening the major institutional collapses that were found to be disastrous in the less fortunate cases. The authors conclude: “We must consider the people’s experiences because what happens at the local level can stabilize society, can augment people’s capabilities for contributing in positive ways, and thus can help avert disaster.”
I’m probably not the only one who’s found herself reaching out to friends she hasn’t talked to in years to check on how they’re doing in this crazy situation. It turns out this normal human impulse may have a practical benefit. Cross-cultural, cross-temporal evidence reminds us that our communities make us resilient. Strong communities protect and provide and care for us when larger institutions falter and can even prop up those institutions until they recover their footing. Community-building in the time of Coronavirus may not look like it used to, but it’s one of the smartest things we can do.
* Hegmon M, Peeples MA, on behalf of the LTVTP-NABO collaboration (2018) The human experience of social transformation: Insights from comparative archaeology. PLoS ONE 13(11): e0208060. https://doi.org/10.1371/journal.pone.0208060
** The researchers followed the United Nations definition of seven types of human securities to assess human security broadly: economic, food, health, environmental, personal, community, political.
This is my first post about my new research project ZANBA: zooarchaeology of the Nuragic Bronze Age. This isn’t the post I expected or wanted to write. But none of us are doing what we expected or wanted right now. Fighting the pandemic is rightly taking precedence over our plans. So these days I’m sitting on my couch or looking out my window at empty parking lots and wondering – how do I “do” archaeology in the Time of Coronavirus?
I expected to be in the field right now, getting ZANBA off the ground: meeting with the Soprintendenza, discussing permits, reestablishing lab access, taking a look at the bags of animal bones I haven’t touched since fall 2018. I was hoping to revisit some of the monuments where I work so I could finish an article that’s 90% written. I was going to see my friends. The trip was going to be low pressure and exciting. It was going to be fun.
Obviously, that trip has been cancelled. I’m still seeing my friends, but it’s for virtual cocktails over Zoom. Our conversations only occasionally touch on work. They focus on concern for each other’s safety and heavy doses of encouragement.
I arrived in Wales to begin my new project in early January, just days before the novel coronavirus was identified. In January, the feeling around me was of an emergency happening somewhere else. In February, the feeling was of a concern that would only seriously affect a few. In March, the feeling went from “this is probably overreacting, but…” to “this is a national health emergency” in a matter of days. On Friday, March 13, my university announced that in-person teaching would end after one more week. The following Monday morning, it announced that in-person teaching would end after Wednesday. By that Monday evening, in-person classes were cancelled and staff were encouraged not to return to the building on Tuesday. The world was changing fast.
The world is changing fast, and it can be hard to grasp what a slow-moving discipline like archaeology has to contribute in a crisis. The logistics of excavation and survey mean it can take years to gather our primary data. The constraints of collaborative research, shared labs, and intermittent funding mean it can be years again before we publish our findings. Most of our work investigates people who died a long time ago. Realistically, should the public care at all right now what the archaeologists have to say?
YES. Archaeologists can answer some of the most important questions people are worried about right now. Not about how to protect ourselves and our loved ones from the virus (stay home, wash your hands!) but about what things might look like after. How do societies respond to crises? How do crises differentially affect cities, towns, and rural settlements? What happens after a crisis? How do societies recover – or not? How long does recovery take?
Archaeologists have experience interpreting a global dataset that stretches back 250,000 years. We’ve studied how a lot of human systems have contracted and collapsed, as well as how they’ve adapted and been reinvented. It may feel like archaeological information can’t be comparable to what we’re going through today – ancient people didn’t have jets and stock exchanges and the internet. But most archaeologists will tell you that the roots of resilience in the past are the same as those in the present: maintaining the flow of accurate information, good decision-making, robust supply chains, and a willingness to do things differently when necessary.
Many archaeologists are trained in an anthropological framework that encourages us to see ancient people as culturally different, but cognitively and biologically the same as we are today. This perspective means that archaeologists can’t fall back on the comforting but false idea that real crises won’t happen to us because we’re too smart, scientifically advanced, or technologically capable. Archaeologists know that ancient people were just as smart as we are, and we’ve seen plenty of evidence that – no matter how smart we are – our human trajectory never goes endlessly up.
But we’ve also seen that dips in human trajectories vary widely in their aftermaths. Sometimes large-scale projects and long-distance communication all but disappear for centuries, but it doesn’t always happen that way. Sometimes people respond quickly and there’s a new period of growth. Sometimes the dissolution of sweeping hierarchies leads to more successful local systems. All kinds of outcomes are possible. Both individual and institutional responses matter, and adaptation is key.
The archaeologist who is my coauthor on the article that’s 90% finished is a specialist in photogrammetry. He’s currently adapting his skills to 3D print face shields for medical workers. We all have skills that can be adapted to the current moment. They may be as simple as the ability to keep ourselves entertained while staying inside, but these skills are saving lives.
We also have skills that will help us adapt to whatever future emerges from the current crisis. None of us knows right now how long this will last or what the long-term effects will be on our social networks, our economies, and our way of life. We’re taking this one day at a time. But as we move forward, consider talking to the archaeologists. Our case studies are different but relevant, and we’re trained to take the long view.
If you’ve ever Googled Sardinian archaeology, you’ve probably run across the idea that Sardinia was Atlantis. The idea is common on the island itself due to a popular work of pseudoarchaeology. The claim that Sardinia was Atlantis has now been picked up by English-language sources, including a recent National Geographic special.
Now there’s pretty much nowhere on earth that someone hasn’t claimed is Atlantis, so in that sense, Sardinia isn’t special. But in case there was any doubt in your mind, in case you thought maybe Sardinia was the one place on earth that really was Atlantis, let me just tell you:
Nevertheless, the idea that Sardinia was Atlantis is persistent, and it’s being actively promoted. There are many problematic layers to this misinformation, one of the most insidious being that it’s being promoted using a lot of gorgeous images of Sardinia’s real archaeology, which is genuinely mind-blowing.
How could you not be impressed by the cultural patrimony of an island that includes literally thousands of towers like Is Paras?
This juxtaposition of archaeological imagery with fantastic claims blurs the lines between reality and fiction and draws people into accepting the misinformation because it appears to be supported by evidence. Unfortunately, like most pseudoarchaeology, the links between the fantastic claim and the real archaeology are cherry-picked and superficial, and the evidence that proves the fantastic claim is wrong is never presented at all.
The claim that Sardinia is Atlantis has been well and thoroughly debunked by many Sardinian archaeologists, historians, and geologists and you can read their Italian-language response here. But if English is your thing, you can also listen to me discuss these issues on the podcast Archaeological Fantasies.
Many thanks to Sara Head, Jeb Card, and Ken Feder – the hosts of Archaeological Fantasies – for having me on the show! You can check out Ken’s work on frauds and myths in archaeology here and here, and Jeb’s work on pseudoarchaeology here.