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38
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Introduction
Additional affiliations
February 2017 - present
Paleobotalab
Position
- Manager
Description
- microenterprise specializing in reconstruction of ancient environments based on the study of fossil pollens
June 2013 - March 2016
April 2007 - November 2012
Publications
Publications (38)
Abstract :This paper describes long-term changes in human population and vegetation cover in southern France, using summed radiocarbon probability distributions and site count data as population proxies and information from fossil pollen cores as a proxy for past land cover. Southern France is particularly wellsuited to this type of study as a resu...
Over the last two millennia, European Alpine ecosystems have experienced major changes in response to the important, yet fluctuating, impact of human activities. This study aims to reconstruct the environmental history of the last 1800 years on the western edge of the Alps by analyzing sediments from Lake Aiguebelette, a large lake located in the p...
Quantitative reconstructions of past land cover are necessary to determine the processes involved in climate-human-land-cover interactions. We present the first temporally continuous and most spatially extensive pollen-based land-cover reconstruction for Europe over the Holocene (last 11 700 cal yr BP). We describe how vegetation cover has been qua...
Les résultats des analyses anthracologiques effectuées sur cinq sites archéologiques dans la Marne (région Grand-Est, France), fouillés entre 2011 et 2014 par l’Institut national de recherches archéologiques préventives (Inrap), sont présentés dans cet article. Il s’agit en grande partie de charbons de bois issus de structures archéologiques en cre...
Le territoire littoral de Thonon-les-Bains et son arrière-pays offrent un cadre propice à une approche spatiale et diachronique de l’occupation des sols au cours de la Protohistoire. La reprise des données anciennes et les résultats des fouilles préventives récentes alimentent ce projet de synthèse portant sur un espace compris entre les rivières D...
The value of non-pollen palynomorphs (NPPs) to complement reconstructions of past communities and environments has led to the identification of an increasing number of microfossil morphotypes. Unfortunately, limited knowledge about their specific ecological indicator values still restricts the interpretation of NPP accumulation rates or assemblage...
Local glacial fluctuations and flood occurrences were investigated in the sediment sequence of proglacial Lake Muzelle. Based on geochemical analysis and organic matter content established using loss on ignition and reflectance spectroscopy, we identified six periods of increased glacial activity over the last 1700 yr. Each is in accordance with re...
Au cours de la dernière quinzaine d’années, nous nous sommes attachés à ” faire parler ” les sédiments des lacs alpins afin de reconstituer les changements environnementaux qui ont ponctué le cours de l’interglaciaire dans lequel nous vivons : l’Holocène. Largement inspirés par les méthodes développées en paléocéanographie, nous avons pour cela dév...
La plaine champenoise crayeuse présente actuellement une végétation de milieu ouvert, très marquée par les activités anthropiques et notamment la culture céréalière. La quasi-absence de végétation climacique dans cette zone géographique entraîne des débats controversés, notamment sur un possible indigénat du pin (Bouderias et Timbal 1980 ; Couderc...
La plaine champenoise crayeuse présente actuellement une végétation de milieu ouvert, très
marquée par les activités anthropiques et notamment la culture céréalière. La quasi-absence de
végétation climacique dans cette zone géographique entraîne des débats controversés,
notamment sur un possible indigénat du pin (Bouderias et Timbal 1980 ; Couder...
Extreme precipitation events can trigger floods that may have serious human and economic consequences. The flood represents extreme rainfall event, which in high altitude mountain regions are mostly triggered alternatively by local convective summer storms or, less frequently, by regional widespread rainfall event. The former’s precipitation patter...
The main objective of this study is to document paleofire activity during the late-glacial/early-Holocene transition in temperate ecosystems. For this purpose, we cored lakes Paladru and Moras (Rhone valley, France) and quantified sedimentary charcoal accumulation rate and fire frequency. To assess the role of climate and vegetation in paleofire ac...
The Research program Pygmalion consisted in 4-years long unprecedented scientific effort to investigate complex human-climate-environment interactions in Northern French Alps. Thanks to a wide geographic cover, it led to evidencing an erosion anomaly at the time of the Allobroges Gallic tribe just prior and after their embedment into the Roman Empi...
The main drivers of fire regimes in southern Europe are climate, vegetation and land-use changes that interact at different spatio-temporal scales. These complex interplays between “natural” and anthropogenic forcings hinder the identification of fire-climate linkages on the long time scale. In this paper, we focused on the Last Glacial–Holocene tr...
Lac Moras is a small lake located on a low-elevation plateau in the upper Rhône Valley (304 m a.s.l.). The upper 5 m of accumulated sediment in the lake span 7500 years and offer a detailed record of environmental perturbations and land-use history at a local scale. A multiproxy analysis (pollen, charcoal and geochemical parameters) led to the esta...
The lake sediment record was used to reconstruct past vegetation dynamics and human impacts from the middle Neolithic (6500 cal. b.p.) to the Middle Ages (1500 cal. b.p.) around Lac d’Antre in the southern Jura mountains of France. This lake was surrounded by the Gallo-Roman sanctuary of Villards d’Héria, which has been widely investigated by archa...
Cette thèse vise à reconstituer les dynamiques de végétation et des sols, ainsi que l’activité des feux depuis la dernière période glaciaire dans le Centre-Est de la France. L’objectif est plus particulièrement de déterminer la période à partir de laquelle les forçages anthropiques prennent le pas sur les forçages climatiques dans la dynamique des...
Small lakes with little catchment areas, and high resolution Holocene
sediment infilling, offer the interest to record mainly local
perturbation and to study the switch from climatic to anthropogenic
forcing. Two cores were extracted from Lake Antre in the Jura Mountains
(Eastern France, 798 m a.s.l) and Lake Moras located on a low-elevated
plateau...
