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Title: 2700 years of Mediterranean environmental change in central Italy: a synthesis of sedimentary and cultural records to interpret past impacts of climate on society

Journal Article · · Quaternary Science Reviews
 [1];  [2];  [3];  [3];  [1];  [1];  [4];  [3];  [5];  [5];  [2]
  1. University of Nevada, Reno, NV (United States)
  2. DAFNE Università degli Studi della Tuscia, Viterbo (Italy)
  3. Istituto Nazionale di Geofisica e Vulcanologia, Rome (Italy)
  4. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
  5. Università degli Studi di Roma Tor Vergata, Rome (Italy)

We report abrupt climate change in the past is thought to have disrupted societies by accelerating environmental degradation, potentially leading to cultural collapse. Linking climate change directly to societal disruption is challenging because socioeconomic factors also play a large role, with climate being secondary or sometimes inconsequential. Combining paleolimnologic, historical, and archaeological methods provides for a more secure basis for interpreting the past impacts of climate on society. We present pollen, non-pollen palynomorph, geochemical, paleomagnetic and sedimentary data from a high-resolution 2700 yr lake sediment core from central Italy and compare these data with local historical documents and archeological surveys to reconstruct a record of environmental change in relation to socioeconomic history and climatic fluctuations. Here we document cases in which environmental change is strongly linked to changes in local land management practices in the absence of clear climatic change, as well as examples when climate change appears to have been a strong catalyst that resulted in significant environmental change that impacted local communities. During the Imperial Roman period, despite a long period of stable, mild climate, and a large urban population in nearby Rome, our site shows only limited evidence for environmental degradation. Warm and mild climate during the Medieval Warm period, on the other hand, led to widespread deforestation and erosion. The ability of the Romans to utilize imported resources through an extensive trade network may have allowed for preservation of the environment near the Roman capital, whereas during medieval time, the need to rely on local resources led to environmental degradation. Cool wet climate during the Little Ice Age led to a breakdown in local land use practices, widespread land abandonment and rapid reforestation. Our results present a high-resolution regional case study that explores the effect of climate change on society for an under-documented region of Europe.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
Grant/Contract Number:
AC52-07NA27344; GSS-1228126
OSTI ID:
1901993
Report Number(s):
LLNL-JRNL-665781; 787205
Journal Information:
Quaternary Science Reviews, Vol. 116, Issue N/A; ISSN 0277-3791
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Ages and magnetic susceptibility of Lake Lungo, Italy dataset January 2018
XRF analysis of sediments of Lake Lungo, Italy dataset January 2018
Historical ecology reveals landscape transformation coincident with cultural development in central Italy since the Roman Period journal February 2018
Rome in its setting. Post-glacial aggradation history of the Tiber River alluvial deposits and tectonic origin of the Tiber Island journal March 2018