Céline Lavergne

Céline Lavergne
Playa Ancha University · Centro de Estudio Avanzados

PhD
Microbial Ecology / Ecotoxicology Researcher

About

47
Publications
7,722
Reads
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195
Citations
Citations since 2017
30 Research Items
184 Citations
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Introduction
Céline Lavergne currently works as a Microbial Ecology / Ecotoxicology Researcher at the Advances Research Center (Centro de Estudios Avanzados, CEA) and at the Environmental HUB UPLA of the University of Playa Ancha (Valparaíso, Chile). Céline does research in Ecology, Molecular Biology and Microbiology. Her last postdoc project was 'MEMARC: Role of methanogenic Archaea in the biogeochemical cycle of mercury in natural and anthropic anaerobic ecosystems'.
Additional affiliations
March 2018 - present
Pontificia Universidad Católica de Valparaíso
Position
  • PostDoc Position
Description
  • MEMARC-Role of methanogenic Archaea in the biogeochemical cycle of mercury in natural and anthropic anaerobic ecosystems. FONDECYT Postdoc project nº3180374
January 2016 - February 2018
Pontificia Universidad Católica de Valparaíso
Position
  • PostDoc Position
Description
  • Biodiversity and activity of methanogens in Arctic and Subantarctic ecosystems impacted by climate change
October 2014 - present
La Rochelle Université
Position
  • Temporary Researcher and Lecturer
Description
  • Microbiology, Ecology and Macroevolution processes
Education
October 2011 - December 2014
La Rochelle Université
Field of study
  • Marine Microbial Ecology

Publications

Publications (47)
Poster
Full-text available
Considering the current knowledge, we hypothesize that in anoxic systems, methanogenic Archaea can either produce or degrade methylmercury. That is why we propose a complementary study linking molecular biology approaches to culture-based techniques and activity measurements. Mercury levels in lake sediments might influence microbial communities. F...
Article
Full-text available
It is commonly assumed that methane (CH4) released by lakes into the atmosphere is mainly produced in anoxic sediment and transported by diffusion or ebullition through the water column to the surface of the lake. In contrast to that prevailing idea, it has been gradually established that the epilimnetic CH4 does not originate exclusively from sedi...
Article
Full-text available
The Aconcagua river basin (Chile, 32 • S) has suffered the effects of the megadrought over the last decade. The severe snowfall deficiency drastically modified the water supply to the catchment headwaters. Despite the recognized snowmelt contribution to the basin, an unknown streamflow buffering effect is produced by glacial, periglacial and ground...
Article
Full-text available
Freshwater ecosystems are responsible for an important part of the methane (CH4) emissions which are likely to change with global warming. This study aims to evaluate temperature-induced (from 5 to 20 °C) changes on microbial community structure and methanogenic pathways in five sub-Antarctic lake sediments from Magallanes strait to Cape Horn, Chil...
Article
Marine ecosystems in the Arctic and Antarctica were once thought pristine and away from important human influence. Today, it is known that global processes as atmospheric transport, local activities related with scientific research bases, military and touristic maritime traffic, among others, are a potential source of pollutants. Macroalgae have be...
Article
Freshwater ecosystems are important contributors to the global greenhouse gas budget and a comprehensive assessment of their role in the context of global warming is essential. Despite many reports on freshwater ecosystems, relatively little attention has been given so far to those located in the southern hemisphere and our current knowledge is par...
Article
Full-text available
High latitudes are experiencing intense ecosystem changes with climate warming. The underlying methane (CH4) cycling dynamics remain unresolved, despite its crucial climatic feedback. Atmospheric CH4 emissions are heterogeneous, resulting from local geochemical drivers, global climatic factors, and microbial production/consumption balance. Holistic...
Article
Full-text available
The Anthropocene is an uneven phenomenon. Accelerated shifts in the functioning of the Earth System are mainly driven by the production and consumption of wealthy economies. Social, environmental and health costs of such industrialization, however, bear on low-income communities inhabiting severely degraded territories by polluting activities (i.e....
Article
Anaerobic digestion (AD) is an attractive bioprocess for waste treatment and energy recovery through methane-rich biogas production. Under temperate to cold climate, the implementation of AD for low-organic load wastewater treatment has been limited to date, due to the energetic and economic cost of maintaining optimal mesophilic temperature. Hence...
Preprint
Full-text available
Under climate change framework, methanogens activity is expected to be strongly affected, eventually resulting in positive feedback on global climate, with higher greenhouse gas (GHG) emissions in the Arctic. This work aimed to evaluate the effect of increasing temperature on methane production rate and archaeal community of lake sediments and wetl...
Article
The Mendoza River streamflow, South America (∼32°S), derives almost exclusively from winter snow precipitation falling in the Andes. Almost 70% of the water feeding the river originates in the Cordillera Principal geological province. In addition to the snow that precipitates in this area, there are 951 cryoforms providing meltwater to the upper ca...
Article
The Antarctic Peninsula is one of the regions to be most affected by increase in sea surface temperatures (SSTs) mediated by Global Climate Change; indeed, most negative predictions imply an up to 6 °C increment by the end of the XXI century. Temperature is one of the most important factors mediating diversity and distribution of macroalgae, althou...
Article
The aim of this study is to assess the performance of anaerobic digestion against co-digestion systems during the start-up stages based on key process parameters and biological indicators. Two parallel experiments treating sewage sludge alone or co-digested with low concentration of pig manure (8% vol., 2-3% in COD basis) were carried out in two la...
Data
Methane emissions from aquatic and terrestrial ecosystems play a crucial role in global warming, which is particularly affecting high-latitude ecosystems. As major contributors to methane emissions in natural environments, the microbial communities involved in methane production and oxidation deserve a special attention. Microbial diversity and act...
Article
Full-text available
The phylogenetic assignment of archaeal communities is constantly evolving, and the recent discovery of new phyla that grouped into superphyla has provided novel insights into archaeal ecology and evolution in ecosystems. In intertidal sediments, archaea are known to be involved in key functional processes such as organic matter turnover, but the e...
Poster
Full-text available
Global warming may increase the methanogenic activities in lake sediments and peatlands of polar and sub-polar regions, with different activation energy Alaska and Patagonia samples. In most Patagonia samples, it is related to mcrA gene enrichment with temperature.While methanogenic activities are similar between Alaska and Patagonia samples, they...
Article
An important variability in the experimental results in anaerobic digestion lab test has been reported. This study presents a meta-analysis coupled with multivariate analysis aiming to assess the impact of this experimental variability in batch and continuous operation at mesophilic and thermophilic anaerobic digestion of waste activated sludge. An...
Article
Full-text available
In intertidal sediments, circadian oscillations (i.e., tidal and diel rhythms) and/or depth may affect prokaryotic activity. However, it is difficult to distinguish the effect of each single force on active community changes in these natural and complex intertidal ecosystems. Therefore, we developed a tidal mesocosm to control the tidal rhythm and...
Article
Full-text available
This study describes, for the first time, the water chemistry and microbial diversity in Dziani Dzaha, a tropical crater lake located on Mayotte Island (Comoros archipelago, Western Indian Ocean). The lake water had a high level of dissolved matter and high alkalinity (10.6– 14.5 g L-1 eq. CO 3 2-, i.e. 160–220 mM compare to around 2–2.5 in seawate...
Data
Chemical composition of saline lake waters selected for analysis. Fifty-two alkaline lakes samples (ascending alphabetical order) were retrieved from literature for this study. (XLSX)
Data
Isolation and identification of elements of the aerobic heterotrophic eubacterial community. (DOCX)
Data
Diversity of archaeal community in Dziani Dzaha. (DOCX)
Data
In situ dissolved oxygen records in Dziani Dzaha during a 48 h cycle in September 2011. Central panel: oxygen concentration evolution at 0.15 m (grey circles) and 0.5 m (black circles) depth in Dziani Dzaha Lake. Photosynthetically available radiation at 0.3 m is also given (X symbols). Upper panel: example of linearization of production periods, u...
Conference Paper
Full-text available
In intertidal benthic ecosystems, environmental conditions shaped the inhabiting prokaryotic communities during emersion period. Aiming at simplifying the complexity of intertidal mudflats, we developed a tidal mesocosm approach allowing sampling the top 10 cm of sediment. In this study, we removed macrofauna that can be the major prokaryotic graze...
Article
Full-text available
In diatoms-dominated intertidal mudflats, at low tide the primary production is particularly high and microphytobenthos that can be limited by nitrogen-related nutrients is linked with N-related prokaryotic communities. Thus, this PhD thesis aim at describing by ecological approach, the role of benthic prokaryotic communities especially N-related o...
Article
An intense colored marine bacterium, identified as Cellulophaga lytica, was isolated previously from a sea anemone surface on the Charente-Maritime rocky shore (Atlantic Coast, France), and iridescence of its colonies under direct light was recently described. In addition, iridescence intensities were found to differ strongly between C. lytica stra...
Data
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Questions

Questions (2)
Question
I plan to quantify abundance and activity of anammox bacteria by quantitative PCR. Is there any functional gene (i.e. hzsA, hzsB, hzo ...?) that should be preferred in marine sediments? (I work in coastal muddy sediments)
Question
I'm working on nitrogen cycle and I want to quantify the potential rate of nitrification and denitrification through the quantification of functional genes. I want to known how many copies of these genes (nosZ, nirS, nirK and amoA genes) there are in a bacterial genome?

Network

Cited By

Projects

Projects (8)
Project
Explore the overall role of microbial communities in Hg transformation and bioavailability in southern aquatic systems (fresh- and marine waters) along multiples gradients (from Chile to the Antarctic Peninsula).
Project
The SARS-CoV-2 virus responsible for the COVID-19 disease has been experimentally and empirically demonstrated to transmit across species. Because this virus can persist in the urine and feces of infected individuals, its release into marine ecosystems through the discharge of untreated municipal wastewater in coastal cities may also put marine wildlife at risk. In order to empirically address such risk, we have implemented a national monitoring network, called The Marine Fauna SARS-CoV-2 network (MAFASA).
Project
Evaluate the role of aquatic microbial communities in Hg transformations along a glacier-to-the-sea basin through multiscale and multidisciplinary approaches.