Sylvie V M Tesson

Sylvie V M Tesson
Aarhus University | AU · Department of Bioscience

PhD

About

41
Publications
9,110
Reads
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699
Citations
Introduction
Microorganism Dispersal, Microbial Ecology, Biogenic Ice Nucleation
Additional affiliations
January 2016 - July 2020
Lund University
Position
  • Fellow
September 2013 - December 2015
University of Gothenburg
Position
  • PostDoc Position
May 2011 - May 2013
Lund University
Position
  • PostDoc Position

Publications

Publications (41)
Article
Full-text available
Little is known on the spreading capacities of Limnomonas gaiensis across freshwater lakes in Northern Europe. In this study, we show that the species could successfully be aerosolized from water sources by bubble bursting (2-40 particles.cm⁻³), irrespectively of its density in the water source or of the jet velocity used to simulate wave breaking....
Article
The ecological niche of the recently described limnic microalga Limnomonas gaiensis (Chlamydomonadales) in Northern Europe remains unknown. To decipher the species tolerance capacity to pH, the effects of hydrogen ions on the physiological response of L. gaiensis were investigated. Results showed that L. gaiensis could tolerate exposure from pH 3 u...
Article
Full-text available
Mercury (Hg) in the form of highly toxic methyl mercury (MeHg) accumulates in aquatic food webs to an extent where it may threaten fish health in many freshwaters. Selenium (Se) mitigates the toxicity of accumulated Hg by forming strong bonds with it, a drawback being diversion of Se from biosynthetic pathways of essential selenoenzymes. We measure...
Article
Full-text available
Two novel Chlamydomonas-like species, belonging to the Moewusii clade, have been described. The first species inhabits eutrophic and neutral to basic pH waters in Sweden and England. It is easily recognizable under a light microscope due to its morphology (a small green prolate spheroidal shape with a large and truncated papilla at its anterior end...
Article
Full-text available
The conservation of migratory species poses significant challenges that may be countered by detailed knowledge about the sites used by migrants throughout the annual cycle. We present the first GPS‐tracking data on the migration of declining Caspian terns Hydroprogne caspia breeding in the Baltic Sea. For 39 Caspian terns from colonies along a lati...
Article
Full-text available
The water flea Daphnia has the capacity to respond rapidly to environmental stressors, to disperse over large geographical scales, and to preserve its genetic material by forming egg banks in the sediment. Spatial and temporal distributions of D. magna have been extensively studied over the last decades using behavioral or genetic tools, although t...
Article
Full-text available
Our understanding on how organisms evolutionarily cope with simultaneously occurring, multiple threats over generations is still elusive. In a long‐term experimental study we therefore exposed clones of a freshwater cladoceran, Daphnia magna, to threats from predation and ultraviolet radiation (UVR) during three consecutive parthenogenetic generati...
Article
Full-text available
Microalgae are common members of the atmospheric microbial assemblages. Diverse airborne microorganisms are known to produce ice nucleation active (INA) compounds, which catalyze cloud and rain formation, and thus alter cloud properties and their own deposition patterns. While the role of INA bacteria and fungi in atmospheric processes receives con...
Data
Three aquatic strains after antibiotic treatment and DAPI staining. PASP-03 (A,B), PASP-04 (C,D) and PGCCMP-1383 (E,F).
Data
Information on aquatic strains is presented: taxonomy at species level, sampling location (origin), the location on Figure 1 (#), culture medium (freshwater: MWC, brackish-water: f/2 25%, sea water: f/2 100%), growth temperature and the capacity of revival assessed over four months after freezing (Revival).
Data
Information on airborne strains. The taxonomy is presented at the Phylum-Class-Order-Species level when available. As genetic markers we used partial 23S rRNA gene, 18S rRNA gene and/or ITS and the amplicon length is indicated in brackets [bp]. The culture medium was either artificial rain water (ARW), freshwater (MWC) or brackish-water (f/2 25%)....
Data
Mean ice nuclei produced per cell for each category of temperature tested in strains of airborne and aquatic microalgae. NA stands for data not available (all wells frozen).
Article
Most microalgal species are geographically widespread, but little is known about how they are dispersed. One potential mechanism for long‐distance dispersal is through birds, which may transport cells internally (endozoochory) and deposit them during, or in‐between, their migratory stopovers. We hypothesize that dinoflagellates, in particular resti...
Article
Full-text available
Whether or not communities of microbial eukaryotes are structured in the same way as bacteria is a general and poorly explored question in ecology. Here, we investigated this question in a set of planktonic lake microbiotas in Eastern Antarctica that represent a natural community ecology experiment. Most of the analysed lakes emerged from the sea d...
Preprint
Full-text available
Whether or not communities of microbial eukaryotes are structured in the same way as prokaryotes is a basic and poorly explored question in ecology. Here we investigated this question in a set of planktonic lake microbiotas in Eastern Antarctica that represent a natural community ecology experiment. Most of the analysed lakes emerged from the sea d...
Chapter
Full-text available
The marine environment harbors a large proportion of the total biodiversity on this planet, including the majority of the earths’ different phyla and classes. Studying the genomes of marine organisms can bring interesting insights into genome evolution. Today, almost all marine organismal groups are understudied with respect to their genomes. One p...
Article
Full-text available
Dispersal barriers have demographic, evolutionary and ecosystem-wide consequences. With ongoing changes in the environment, it is likely that some dispersal barriers will disappear while others will appear, and it is crucial to understand these dynamics to forecast species distributions and adaptive potential. Here we review recent literature on th...
Article
Landscape genetics, which explicitly quantifies landscape effects on gene flow and adaptation, has largely focused on macroorganisms, with little attention given to microorganisms. This is despite overwhelming evidence that microorganisms exhibit spatial genetic structuring in relation to environmental variables. The increasing accessibility of gen...
Article
Full-text available
Airborne dispersal of microalgae has largely been a blind spot in environmental biological studies because of their low concentration in the atmosphere and the technical limitations in investigating microalgae from air samples. Recent studies show that airborne microalgae can survive air transportation and interact with the environment and possibly...
Article
Whatever their size and the ecosystem they live in, all organisms may disperse at some stage of their life cycle. Dispersal dynamics are to a varying extent dependent on organismal size, life history, ecological niche, survival capacities and phylogeny. Moves towards a synthesis in dispersal ecology have focussed primarily on vertebrates and higher...
Article
Whatever their size and the ecosystem they live in, all organisms may disperse at some stage of their life cycle. Dispersal dynamics are to a varying extent dependent on organismal size, life history, ecological niche, survival capacities and phylogeny. Moves towards a synthesis in dispersal ecology have focussed primarily on vertebrates and higher...
Article
Full-text available
Whatever their size and the ecosystem they live in, all organisms may disperse at some stage of their life cycle. Dispersal dynamics are to a varying extent dependent on organismal size, life history, ecological niche, survival capacities and phylogeny. Moves towards a synthesis in dispersal ecology have focused primarily on vertebrates and higher...
Article
Gonyostmum semen is a freshwater raphidophyte that has increased in occurrence and abundance in several countries in northern Europe since the 1980s. More recently, the species has expanded rapidly also in north-eastern Europe, and it is frequently referred to as invasive. To better understand the species history, we have explored the phylogeograph...
Data
Figure S1. Bayesian phylogenetic tree of the large subunit of the ribosomal DNA (LSU).
Conference Paper
Full-text available
We have sequenced the genome and transcriptome of the marine centric diatom Skeletonema mari-noi GUMACC st54, as part of the Linnaeus Centre for Marine Evolutionary Biology (CeMEB, http://cemeb.science.gu.se/) at the University of Gothenburg. This work is part of IMAGO – Infrastructure for MArine Genetic model Organisms, an initiative within CEMEB...
Article
Full-text available
A prevailing question in phytoplankton research addresses changes of genetic diversity in the face of huge population sizes and apparently unlimited dispersal capabilities. We investigated population genetic structure of the pennate planktonic marine diatom Pseudo-nitzschia multistriata at the LTER station MareChiara in the Gulf of Naples (Italy) o...
Article
Full-text available
It has been long recognised that dispersal is an important life-history trait that plays a key role in the demography and evolution of populations and species. This then suggests that dispersal play a central role in the response of populations and species to ever-increasing global change, including climate change, habitat loss and fragmentation, a...
Article
The diatom Pseudo-nitzschia multistriata exhibits a diplontic life cycle composed of an extensive phase of vegetative cell division and a brief phase of sexual reproduction. To explore genotypic stability, we genotyped seven polymorphic microsatellite loci in 26 monoclonal strains over 3-16 months in a culture maintenance regime. Moreover, to asses...
Article
Full-text available
Seven microsatellite loci were characterized for the toxic diatom Pseudo-nitzschia multistriata Takano (Takano) to investigate intraspecific variability and estimate population genetic structure over blooms, seasons, and sexual and vegetative reproduction. Selected microsatellites consisted of di- and trinucleotide repeats in the core region, and s...
Article
Full-text available
In pelagic ecosystems, the principal source of organic matter is via autotrophic production and the primary sink is through heterotrophic respiration. One would therefore anticipate that there is some degree of linkage between these two compartments. Recent work has shown that respiration in the light is higher than dark respiration. Consequently,...

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