Preservation of an ancient grassland biomarker signature in a forest soil from the French Massif Central

Lavrieux, Marlène; Bréhéret, Jean‐Gabriel; Disnar, Jean-Robert; Jacob, Jérémy; Milbeau, Claude Le; Zocatelli, Renata

doi:10.1016/j.orggeochem.2012.07.003

Cited by 28 publications

(21 citation statements)

References 42 publications

(43 reference statements)

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“…Only roots could constitute a potential contributor of soil CBN, but hemp roots have not been shown to contain on October 9, 2015 geology.gsapubs.org Downloaded from more than small amounts of cannabinoids (De Pasquale et al, 1974;Russo, 2007). Because soils are reputed to retain the molecular imprint of their past land uses (Lavrieux et al, 2012), and although soils are the main contributors of terrestrial organic matter to lacustrine sediments through erosion, another source must be invoked to explain the presence of CBN in the lake sediments. The most obvious explanation involves the practice of retting, a process largely used during historical times in Auvergne (Diderot and d'Alembert, 1778;de la Platière, 1784) which consists of submerging the stems in water.…”

Section: Discussionmentioning

confidence: 99%

Sedimentary cannabinol tracks the history of hemp retting

Lavrieux¹,

Jacob²,

Disnar³

et al. 2013

Geology

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ERODE project funded by the INSU/CNRS and 205 OTARIE project funded by the Région Centre and the European Council. ARTEMIS programInternational audienceHemp (Cannabis sp.) has been a fundamental plant for the development of human societies. Its fibers have long been used for textiles and rope making, which requires prior stem retting. This process is essential for extracting fibers from the stem of the plant, but can adversely affect the quality of surface waters. The history of human activities related to hemp (its domestication, spread, and processing) is frequently reconstructed from seeds and pollen detected in archaeological sites or in sedimentary archives, but this method does not always make it possible to ascertain whether retting took place. Hemp is also known to contain phytocannabinoids, a type of chemicals that are specific to the plant. Here we report on the detection of one of these chemicals, cannabinol (CBN), preserved in a sediment record from a small lake in the French Massif Central covering the last 1800 years. We demonstrate that the presence of this molecule in the sedimentary record is related to retting. Analysis of the evolution of CBN concentrations shows that hemp retting was a significant activity in the area until ca. 1850 AD. These findings are supported by pollen analyses and historical data

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Section: Discussionmentioning

confidence: 99%

Sedimentary cannabinol tracks the history of hemp retting

Lavrieux¹,

Jacob²,

Disnar³

et al. 2013

Geology

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“…Aydat catchment were sampled in course of the ERODE project (EC2CO/INSU/CNRS) and depicted in previous papers (Lavrieux, 2011;Zocatelli et al, 2012;Lavrieux et al, 2012). …”

Section: Sampling Lipid Extraction and Separationmentioning

confidence: 99%

Methoxy-serratenes in a soil under conifers and their potential use as biomarkers of Pinaceae

Milbeau

Lavrieux

Jacob

et al. 2013

Organic Geochemistry

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International audienceIn the frame of a study aimed at defining new soil molecular biomarkers that could attest to former land use and that could also be screened in lake sediments for palaeoenvironmental reconstruction, we analysed the 2-4 cm depth layer of a soil developed under a conifer forest in the Lake Aydat catchment (French Massif Central). The lipid fraction of the sample contained 12 serratenoids bearing at least a methoxyl (OMe) group at C-3 or C-21 and various additional functional groups (alcohol, ketone or acetate). A survey of the literature provided indubitable evidence that these compounds are typical for Pinaceae species, in agreement with the surrounding vegetation at the sampling site. Due to the economic and ecological importance of the taxa, the presence of these highly specific compounds in soil, sediments or peat should therefore help in unravelling the timing of forestry activity

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“…Due to the long residence time of lipids in sedimentary reservoirs (Eglinton et al, 2002;Lavrieux et al, 2012), Mueller et al (2013) demonstrate that compounds from previously logged species influence soil lipid concentration. We acknowledge that logging has considerably changed the plant community composition of Picture Rocks National Lakeshore.…”

Section: Comparison Of Terpenoids Between Leaves and Soilsmentioning

confidence: 99%