The Origin of Lake Pavin: Two Centuries of Controversy

Lake Pavin ◽  
2016 ◽  
pp. 91-104 ◽  
Author(s):  
Pierre Boivin ◽  
Sylvaine Jouhannel
Keyword(s):  
Lake Pavin

scholarly journals Mass collection of magnetotactic bacteria from the permanently stratified ferruginous Lake Pavin, France

2021 ◽  
Author(s):  
Vincent Busigny ◽  
François P. Mathon ◽  
Didier Jézéquel ◽  
Cécile C. Bidaud ◽  
Eric Viollier ◽  
...  
Keyword(s):  
Magnetotactic Bacteria ◽  
Lake Pavin ◽  
Mass Collection

Members of candidate divisions OP11, OD1 and SR1 are widespread along the water column of the meromictic Lake Pavin (France)

2010 ◽  
Vol 192 (7) ◽  
pp. 559-567 ◽  
Author(s):  
Guillaume Borrel ◽  
Anne-Catherine Lehours ◽  
Corinne Bardot ◽  
Xavier Bailly ◽  
Gérard Fonty
Keyword(s):  
Water Column ◽  
Meromictic Lake ◽  
Lake Pavin

scholarly journals A 7000-year environmental history and soil erosion record inferred from the deep sediments of Lake Pavin (Massif Central, France)

2018 ◽  
Vol 497 ◽  
pp. 218-233 ◽  
Author(s):  
Léo Chassiot ◽  
Yannick Miras ◽  
Emmanuel Chapron ◽  
Anne-Lise Develle ◽  
Fabien Arnaud ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Environmental History ◽  
Massif Central ◽  
Lake Pavin ◽  
Deep Sediments

Lake Pavin Mixing: New Insights from High Resolution Continuous Measurements

Lake Pavin ◽  
2016 ◽  
pp. 177-184
Author(s):  
Céline Bonhomme ◽  
Didier Jézéquel ◽  
Michel Poulin ◽  
Mohamed Saad ◽  
Brigitte Vinçon-Leite ◽  
...  
Keyword(s):  
High Resolution ◽  
Continuous Measurements ◽  
Lake Pavin

scholarly journals Genetic Diversity of Small Eukaryotes in Lakes Differing by Their Trophic Status

2005 ◽  
Vol 71 (10) ◽  
pp. 5935-5942 ◽  
Author(s):  
Marie Lefranc ◽  
Aurélie Thénot ◽  
Cécile Lepère ◽  
Didier Debroas
Keyword(s):  
Trophic Status ◽  
Eutrophic Lake ◽  
Rrna Genes ◽  
Eutrophic Lakes ◽  
Massif Central ◽  
Operational Taxonomic Units ◽  
Single Clone ◽  
18S Rrna Genes ◽  
Lake Pavin ◽  
Environmental Sequences

ABSTRACT Small eukaryotes, cells with a diameter of less than 5 μm, are fundamental components of lacustrine planktonic systems. In this study, small-eukaryote diversity was determined by sequencing cloned 18S rRNA genes in three libraries from lakes of differing trophic status in the Massif Central, France: the oligotrophic Lake Godivelle, the oligomesotrophic Lake Pavin, and the eutrophic Lake Aydat. This analysis shows that the least diversified library was in the eutrophic lake (12 operational taxonomic units [OTUs]) and the most diversified was in the oligomesotrophic lake (26 OTUs). Certain groups were present in at least two ecosystems, while the others were specific to one lake on the sampling date. Cryptophyta, Chrysophyceae, and the strictly heterotrophic eukaryotes, Ciliophora and fungi, were identified in the three libraries. Among the small eukaryotes found only in two lakes, Choanoflagellida and environmental sequences (LKM11) were not detected in the eutrophic system whereas Cercozoa were confined to the oligomesotrophic and eutrophic lakes. Three OTUs, linked to the Perkinsozoa, were detected only in the Aydat library, where they represented 60% of the clones of the library. Chlorophyta and Haptophyta lineages were represented by a single clone and were present only in Godivelle and Pavin, respectively. Of the 127 clones studied, classical pigmented organisms (autotrophs and mixotrophs) represented only a low proportion regardless of the library's origin. This study shows that the small-eukaryote community composition may differ as a function of trophic status; certain lineages could be detected only in a single ecosystem.

Methanobacterium lacus sp. nov., isolated from the profundal sediment of a freshwater meromictic lake

2012 ◽  
Vol 62 (Pt_7) ◽  
pp. 1625-1629 ◽  
Author(s):  
Guillaume Borrel ◽  
Keith Joblin ◽  
Annie Guedon ◽  
Jonathan Colombet ◽  
Vincent Tardy ◽  
...  
Keyword(s):  
Rumen Fluid ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Meromictic Lake ◽  
Rrna Gene ◽  
The Novel ◽  
Content Type ◽  
Link Type ◽  
Gram Staining ◽  
Lake Pavin

An autotrophic, hydrogenotrophic methanogen, designated strain 17A1T, was isolated from the profundal sediment of the meromictic Lake Pavin, France. The cells of the novel strain, which were non-motile, Gram-staining-negative rods that measured 2–15 µm in length and 0.2–0.4 µm in width, grew as filaments. Strain 17A1T grew in a mineral medium and its growth was stimulated by the addition of yeast extract, vitamins, acetate or rumen fluid. Penicillin, vancomycin and kanamycin reduced growth but did not completely inhibit it. Growth occurred at 14–41 °C (optimum 30 °C), at pH 5.0–8.5 (optimum pH 6.5) and with 0–0.4 M NaCl (optimum 0.1 M). The novel strain utilized H2/CO2 and methanol/H2 as substrates but not formate, acetate, methylamine/H2, isobutanol or 2-propanol. Its genomic DNA G+C content was 37.0 mol%. In phylogenetic analyses based on 16S rRNA gene sequences, strain 17A1T appeared to be a member of the genus Methanobacterium , with Methanobacterium beijingense 8-2T (96.3 % sequence similarity) identified as the most closely related established species. Based on phenotypic and phylogenetic data, strain 17A1T represents a novel species of methanogen within the genus Methanobacterium , for which the name Methanobacterium lacus sp. nov. is proposed. The type strain is 17A1T ( = DSM 24406T = JCM 17760T).

Carbon Cycle in a Meromictic Crater Lake: Lake Pavin, France

Lake Pavin ◽  
2016 ◽  
pp. 185-203
Author(s):  
Didier Jézéquel ◽  
G. Michard ◽  
E. Viollier ◽  
P. Agrinier ◽  
P. Albéric ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Crater Lake ◽  
Lake Pavin

scholarly journals Multidisciplinary characterisation of sedimentary processes in a recent maar lake (Lake Pavin, French Massif Central) and implication for natural hazards

2010 ◽  
Vol 10 (9) ◽  
pp. 1815-1827 ◽  
Author(s):  
E. Chapron ◽  
P. Albéric ◽  
D. Jézéquel ◽  
W. Versteeg ◽  
J.-L. Bourdier ◽  
...  
Keyword(s):  
Lacustrine Sediments ◽  
French Massif Central ◽  
Mass Wasting ◽  
Data Set ◽  
Massif Central ◽  
Volcanic Material ◽  
Deep Waters ◽  
Wide Range ◽  
Maar Lake ◽  
Lake Pavin

Abstract. Sedimentation processes occurring in the most recent maar lake of the French Massif Central (Lake Pavin) are documented for the first time based on high resolution seismic reflection and multibeam bathymetric surveys and by piston coring and radiocarbon dating on a sediment depocentre developed on a narrow sub aquatic plateau. This new data set confirms the mid Holocene age of maar lake Pavin formation at 6970±60 yrs cal BP and highlights a wide range of gravity reworking phenomena affecting the basin. In particular, a slump deposit dated between AD 580–640 remoulded both mid-Holocene lacustrine sediments, terrestrial plant debris and some volcanic material from the northern crater inner walls. Between AD 1200 and AD 1300, a large slide scar mapped at 50 m depth also affected the southern edge of the sub aquatic plateau, suggesting that these gas-rich biogenic sediments (laminated diatomite) are poorly stable. Although several triggering mechanisms can be proposed for these prehistoric sub-aquatic mass wasting deposits in Lake Pavin, we argue that such large remobilisation of gas-rich sediments may affect the gas stability in deep waters of meromictic maar lakes. This study highlights the need to further document mass wasting processes in maar lakes and their impacts on the generation of waves, favouring the development of dangerous (and potentially deadly) limnic eruptions.

A Preliminary Study of Heterotrophic Picoflagellates Using Oligonucleotidic Probes in Lake Pavin

Hydrobiologia ◽  
2005 ◽  
Vol 551 (1) ◽  
pp. 61-67 ◽  
Author(s):  
Emilie Lefèvre ◽  
Jean-François Carrias ◽  
Corinne Bardot ◽  
Télesphore Sime-Ngando ◽  
Christian Amblard
Keyword(s):  
Preliminary Study ◽  
Lake Pavin
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