Laurent Seuront

Laurent Seuront
French National Centre for Scientific Research (Centre National de la Recherche Scientifique) · CNRS UMR 8187 LOG

PhD

About

247
Publications
41,468
Reads
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5,263
Citations
Additional affiliations
October 2014 - present
French National Centre for Scientific Research
Position
  • Professor
January 2009 - December 2013
Flinders University
Position
  • Professor (Full)

Publications

Publications (247)
Article
Our understanding of how anthropogenic stressors such as climate change and plastic pollution interact with biodiversity is being widened to include diversity below the species level, i.e., intraspecific variation. The emerging appreciation of the key ecological importance of intraspecific diversity and its potential loss in the Anthropocene, furth...
Article
Full-text available
The massive contamination of the environment by plastics is an increasing global scientific and societal concern. Knowing whether and how these pollutants affect the behaviour of keystone species is essential to identify environmental risks effectively. Here, we focus on the effect of plastic leachates on the behavioural response of the common blue...
Article
Plastic is one of the most ubiquitous sources of both contamination and pollution of the Anthropocene, and accumulates virtually everywhere on the planet. As such, plastic threatens the environment, the economy and human well-being globally. The related potential threats have been identified as a major global conservation issue and a key research p...
Preprint
Full-text available
While phytoplankton has been shown to influence climate in diverse ways, this review treats just two aspects: reduction of sea-air fluxes, and increase in ocean foam coverage. Plankton and neuston algae produce dissolved organic matter (DOM), which tends to concentrate in the sea-surface microlayer (SML). Fluxes of matter and energy exchange across...
Article
Plastic contamination has major effects on biodiversity, enhancing the consequences of other forms of global anthropogenic disturbance such as climate change and habitat fragmentation. Despite this and the recognised importance of intraspecific diversity, we still know relatively little about how plastic pollution affects diversity below the specie...
Article
With 4 to 12 million tons of plastic entering the marine environment each year, plastic pollution has become one of the most ubiquitous sources of pollution of the Anthropocene threatening the marine environment. Beyond the conspicuous physical damages, plastics may release a cocktail of harmful chemicals, i.e. monomers, additives and persistent or...
Article
Full-text available
Among benthic foraminifera, the genus Ammonia is characterized by high morphological variability which makes it particularly challenging to recognize using traditional morphology-based taxonomy. Despite the joint efforts made by both molecular and morphological taxonomists, it is still hard to identify different phylotypes based on their morphology...
Article
La déclaration des effets indésirables chez les patients est une étape majeure de la surveillance transfusionnelle. La relation entre la quantité de produits sanguins labiles (PSL) transfusés et le nombre d’effets indésirables receveurs (EIR) qui en découle représente la clé de voute de l’évaluation du système déclaratif transfusionnel. Des résulta...
Article
La déclaration des effets indésirables chez les patients est une étape essentielle de la surveillance transfusionnelle. La relation entre la quantité de produits sanguins labiles (PSL) transfusés et le nombre d’effets indésirables receveurs (EIR) qui en découle apparaît ainsi comme la pierre angulaire de l’évaluation de la sécurité du processus tra...
Article
Full-text available
We tested the response of algal epifauna to the direct effects of predation and the indirect consequences of habitat change due to grazing and nutrient supply through upwelling using an abundant intertidal rhodophyte, Gelidium pristoides. We ran a mid-shore field experiment at four sites (two upwelling sites interspersed with two non-upwelling site...
Preprint
Full-text available
A universal scaling relationship exists between organism abundance and body size1,2. Within ocean habitats this relationship deviates from that generally observed in terrestrial systems2-4, where marine macro-fauna display steeper size-abundance scaling than expected. This is indicative of a fundamental shift in food-web organization, yet a conclus...
Article
Heat‐induced mass mortalities involving ecosystem engineers may have long‐lasting detrimental effects at the community level, eliminating the ecosystem services they provide. Intertidal mussels are ecologically and economically valuable with some populations facing unprecedented heat‐induced mass mortalities. Critically, mussels are also frequently...
Article
Full-text available
The carbon footprint of flying overseas to conferences, meetings, and workshops to share and build knowledge has been increasingly questioned over the last two decades, especially in environmental and climate sciences, due to the related colossal carbon emissions. Here, we infer the value of scientific meetings through the number of publications pr...
Article
Full-text available
Plankton and neuston microbes produce organic matter (OM), which accumulates in the sea surface microlayer (SML). Fluxes of heat and momentum exchange across the sea-air interface, as do fluxes of matter, including greenhouse gases, aerosols, microbes (algae, bacteria sensu lato and viruses) and other substances. At least at calm to moderate windsp...
Article
Transport of continental shelf sediments to the deep ocean can be studied from displaced symbiont‐bearing larger benthic foraminifera found in turbidity current deposits. The larger benthic foraminifera habitat depth, physical characteristics and preservation serve as indicators for understanding sediment transport dynamics near the seabed and in t...
Article
Full-text available
Although eutrophication induced by anthropogenic nutrient enrichment is a driver of shifts in community composition and eventually a threat to marine biodiversity, the causes and consequences on ecosystem functioning remain greatly unknown. In this study, by applying a trait-based approach and measuring niche breadth of diatoms and copepods, the dr...
Article
Full-text available
Abstract Species that inhabit high‐shore environments on rocky shores survive prolonged periods of emersion and thermal stress. Using two Hong Kong high‐shore littorinids (Echinolittorina malaccana and E. radiata) as models, we examined their behavioral repertoire to survive these variable and extreme conditions. Environmental temperatures ranged f...
Preprint
Full-text available
Although benthic foraminifera are an important component of meiofauna and contribute to carbonate production and carbon/nitrogen cycles, their role in bioturbation processes remains poorly known. Five dominant intertidal benthic foraminifera were recently classified into functional bioturbator groups according to their sediment reworking mode and i...
Article
Temperature extremes are predicted to intensify with climate change. These extremes are rapidly emerging as a powerful driver of species distributional changes with the capacity to disrupt the functioning and provision of services of entire ecosystems, particularly when they challenge ecosystem engineers. The subsequent search for a robust framewor...
Article
Coastal marine ecosystems, which play a crucial role in the biogeochemical and ecological functioning of the Earth, are highly sensitive to the combined effects of climate and human activities. Because of their location, coastal ecosystems are directly influenced by human activities, but it remains challenging to assess the spatial and temporal sca...
Article
Full-text available
Heatwaves have increased in intensity, duration and frequency over the last decades due to climate change. Intertidal species, living in a highly variable environment, are likely to be exposed to such heatwaves since they can be emerged for more than 6 h during a tidal cycle. Little is known, however, on how temperature affects species traits (e.g....
Article
Self-organized, regular spatial patterns emerging from local interactions among individuals enhance the ability of ecosystems to respond to environmental disturbances. Mussels self-organize to form large, regularly patterned biogenic structures that modify the biotic and abiotic environment and provide numerous ecosystem functions and services. We...
Article
Understanding how behavioural adaptations can limit thermal stress for intertidal gastropods will be crucial for climate models. Some behavioural adaptations are already known to limit desiccation and thermal stresses as shell-lifting, shell-standing, towering, aggregation of conspecifics or habitat selection. Here we used the IRT (i.e. infrared th...
Chapter
Full-text available
Microalgae blooms are generally associated with bacterial secondary producers. They produce organic matter (OM), some of which associates with the sea surface microlayer (SML). OM in the SML below the actual surface reduces fluxes of energy, including heat and momentum, and substances, including greenhouse gases, aerosols, algae, bacteria and virus...
Article
The tiny epizoic limpet Lottia tenuisculpta lives on rocky surfaces and shells of the snails Omphalius nigerrimus and Reishia clavigera. The movement patterns of the limpet on host snails was observed during 24 h under controlled laboratory conditions. A specific behaviour, referred to as returning behaviour and reminiscent of homing behaviour, was...
Article
Plastic pollution is ubiquitous with increasing recognition of its direct effects on species’ fitness. Little is known, however, about its more subtle effects, including the influence of plastic pollution on the morphological, functional and behavioural traits of organisms that are central to their ability to withstand disturbances. Among the least...
Article
Massive foam formation in aquatic environments is a seasonal event that has a significant impact on the stability of marine ecosystems. Liquid foams are known to filter passive solid particles, with large particles remaining trapped by confinement in the network of liquid channels and small particles being freely advected by the gravity-driven flow...
Article
The “Rade de Cherbourg” (RdC, Cotentin) hosts the only marine salmon fish farm along the French coasts. High hydrodynamic regime would limit, there, organic matter (OM) accumulation directly under the cages, and enhance the transport of OM in the surrounding of the cages. This study was aiming at (1) monitoring the impact of a salmon fish farm on e...
Article
The assessment of behavioural traits of marine organisms is increasingly recognized as a key issue to understanding their role in ecosystem processes such as bioturbation and nutrient cycling. The movement ability of intertidal foraminifera suggest that they may have a role, yet to be quantified, in benthic−pelagic coupling through their movement o...
Article
Full-text available
The contribution of benthic foraminifera to sediment bioturbation has widely been overlooked despite their huge abundance in intertidal soft sediments. In this preliminary study, we specifically chose to focus on two key species of benthic foraminifera in temperate intertidal mudflats, Quinqueloculina seminula and Ammonia tepida, and first experime...
Article
Full-text available
Despite ample evidence of micro- and small-scale (i.e., millimeter- to meter-scale) phytoplankton and zooplankton patchiness in the ocean, direct observations of nutrient distributions and the ecological importance of this phenomenon are still relatively scarce. In this context, we first describe a simple procedure to continuously sample nutrients...
Article
Full-text available
Plastic is one of the major sources of pollution in modern oceans. When in seawater, toxic plasticizers (the additives incorporated in plastic polymers during manufacturing processes) typically diffuse and accumulate in sediments and in benthic and pelagic organisms’ tissues. These plastic leachates affect survival, behavior and metabolism of vario...
Article
A considerable amount of attention has been devoted to understand the role of chemoreception in the behavioural ecology of gastropods. There is still, however, a limited amount of information related to their sensory ecology and their subsequent ability to navigate through topographically complex landscapes, such as intertidal rocky shores, despite...
Article
Full-text available
Extreme events such as heat waves have increased in frequency and duration over the last decades. Under future climate scenarios, these discrete climatic events are expected to become even more recurrent and severe. Heat waves are particularly important on rocky intertidal shores, one of the most thermally variable and stressful habitats on the pla...
Preprint
Full-text available
Changes in phytoplankton blooming are likely to change exopolymeric substances particularly near the air-ocean surface microlayer, thus changing air-sea fluxes of energy znd substances. Such changes in phytoplankton blooming may harm modelling and prediction of climate change, unless such changes are included in future climate models.
Presentation
Full-text available
Although benthic foraminifera are one of the most abundant components of the meiofauna, their role in intertidal ecosystems functioning has been largely overlooked. Specifically, benthic foraminifera may contribute to bioturbation process by sediment reworking. Whether this contribution is significant remains, however, to be assessed. The aim of th...
Article
La déclaration des effets indésirables chez les patients est une des étapes les plus importantes de la surveillance transfusionnelle. De fait, la relation entre la quantité de produits sanguins labiles (PSL) transfusés et le nombre d’effets indésirables receveurs (EIR) est au cœur du débat relatif à l’évaluation de la sécurité du processus transfus...
Article
La déclaration des effets indésirables chez les patients est une des étapes les plus importantes de la surveillance transfusionnelle. De fait, la quantification de la fréquence f(EIR/PSL) relative entre la quantité de produits sanguins labiles (PSL) transfusés et le nombre d’effets indésirables receveurs (EIR) comme son évolution temporelle et ses...
Article
Full-text available
Marine biodiversity and ecosystem functioning are facing unprecedented pressures in the Anthropocene, with climate change being a primary stressor. To understand the biological response mechanisms along coastlines, the international scientific community requires coordinated action, integrating obervations through observatory networks and spatially...
Article
Full-text available
This paper discusses a turbulent intermittency model introduced in 1990, the B-model. It was found that the original manuscript which introduced the B-model contained a couple arithmetic errors in the equations. This work goes over corrections to the original equations, and explains where problems arose in the derivations. These corrections cause t...
Article
Dislodgment, in particular by breaking waves, is a widely acknowledged source of stress, if not mortality, in rocky shores intertidal gastropods. This raises the question of understanding if snails dislodged from a specific habitat have the ability to navigate back to their original substrate, and how this is achieved. In this context, we investiga...
Article
The Coorong estuary lies at the terminus of Australia’s largest river system, the Murray-Darling; both are strongly influenced by human activities; including farming and extensive flow modification. Metagenomic approaches were used to determine the planktonic bacterial community composition and potential metabolic function at two extremes in the Co...
Article
La déclaration des effets indésirables chez les patients est une des étapes les plus importantes de la surveillance transfusionnelle, et la relation entre la quantité de produits sanguins labiles (PSL) transfusés et le nombre d’effets indésirables receveurs (EIR) qui en découle est au cœur du débat relatif à l’évaluation de la sécurité du processus...
Article
Microplastics are a ubiquitous source of contaminations in marine ecosystems, and have major implications for marine life. Much effort has been devoted to assessing the various effects of microplastics on marine life. No evidence exists, however, on the effects of microplastic leachates on chemically mediated predator-prey interactions and the abil...
Article
Zooplankton communities are an essential component of marine and freshwater food webs. However, there is still a relative lack of information on how these organisms behaviourally respond to a range of abiotic and biotic stressors. Specifically, the behaviour of the cladoceran Daphniopsis australis, a species endemic to South-eastern Australian sali...
Poster
Full-text available
Variation in the taxonomy, concentration and physiological state of blooming algae, and associated bacteria, produces variation in the chemical composition of organic matter (OM) in the surface microlayer (SML) of the ocean and other natural waters. Such chemical variation implies variation in the SML rheological properties, such as viscosity, elas...
Article
In an era of global change, thermal biology and ecology are becoming increasingly popular topics in invertebrate research, including molluscs. However, this area of research is still very limited, essentially due to the intrinsic spatial limitations of traditional single-point temperature measurements (e.g. thermocouples, iButtons and infrared ther...
Article
The goal of this paper is to infer the applicability of scaling concepts to haemovigilance based on the study of the relationship between severe adverse reactions and events (SARE) and blood transfusions (BT). We hypothesize that in a haemovigilance operating optimally, SARE should be a power-law function of BT as SARE=αBTβ. We investigated the rel...
Article
Full-text available
Gas exchange reduction (GER) at the air-sea interface is positively related to the concentration of organic matter (OM) in the top centimetre of the ocean, as well as to phytoplankton abundance and primary production. The mechanisms relating OM to GER remain unclear, but may involve mechanical (rheological) damping of turbulence in the water immedi...
Article
La déclaration des effets indésirables est une étape primordiale dans le suivi de la sécurité du processus transfusionnel chez les patients. Les études disponibles dans la littérature analysent essentiellement les principaux types d’EIR qui apparaissent chez les patients receveurs de produits sanguins labiles (PSL). Cependant, il existe encore rela...
Article
La déclaration des effets indésirables chez les patients est une des étapes les plus importantes de la surveillance transfusionnelle. Toutefois, la relation entre la quantité de produits sanguins labiles (PSL) transfusés et le nombre d’effets indésirables receveurs (EIR) qui en découle est au cœur du débat relatif à l’évaluation de la sécurité du p...
Article
Monitoring changes in the environment and the corresponding effects on biological systems still represents a major challenge in many marine and terrestrial ecological studies. Infrared thermography (IRT), and its application within the marine environment, represents an effective non-invasive tool for measuring the temperatures of organisms and thei...
Article
Fractals have been applied to describe the complexity of behavioral displays in a range of organisms. Recent work suggests that they may represent a promising tool in the quantification of subtle behavioral responses in marine mammals under chronic exposure to disturbance. This paper aims at introducing the still seldom used fractals to the broader...
Article
Full-text available
Positive and negative aspects of species interactions can be context dependant and strongly affected by environmental conditions. We tested the hypothesis that, during periods of intense heat stress, parasitic phototrophic endoliths that fatally degrade mollusc shells can benefit their mussel hosts. Endolithic infestation significantly reduced body...
Article
The susceptibility of bottlenose dolphins (Tursiops sp.) to disturbance within South Australian coastal waters is of particular importance due to both the ever increasing impact of anthropogenic activities on these waters and their semi-enclosed nature. Currently, little is known about the ecology of dolphins in this region, in particular in relati...
Article
Full-text available
Heat-related mass mortalities and local extinctions are expected to rise as the frequency, duration, and intensity of extreme heat events increase due to climate change, particularly in the case of sessile or sedentary species that cannot relocate. Little is known, however, of how biotic factors, such as the size and non-motile behaviour of individ...
Article
This paper presents the first record of Ptilohyale littoralis (Stimpson, 1853) and Boccardia proboscidea (Hartman, 1940) from the French coast of the eastern English Channel. This record is the second for P. littoralis in European waters following a record from the Netherlands, which is suspected as the site of initial introduction from the Atlanti...
Article
The coastlines of southern China and SE Asia represent some of the most anthropogenically impacted ecosystems in the world, yet they support a rich biodiversity and provide important ecosystem services, including being the source of the vast majority of the world's aquaculture production. The challenges faced by coastal ecosystems in this region ar...
Article
Full-text available
The indigenous South African mussel Perna perna gapes during periods of aerial exposure to maintain aerobic respiration. This behaviour has no effect on the body temperatures of isolated individuals, but when surrounded by conspecifics, beneficial cooling effects of gaping emerge. It is uncertain, however, whether the presence of the invasive musse...
Data
Size frequency distributions of the indigenous mussel (Perna perna) and the invasive mussel (Mytilus galloprovincialis) at the Jongensfontein, South Africa. (DOCX)
Article
Full-text available
Rheology is the study of how materials deform, particularly those materials not conforming to ideal solid or ideal liquid models. This is the case for much ocean water, due largely to the presence of organic exopolymeric substances, including mucilage, derived mostly from phytoplankton and bacterioplankton. This material makes the water more viscou...
Research
Full-text available
Presentation made at the First International Workshop on Rheology, nano/microFluidics and bioFouling in the Oceans and other natural waters (RheFFO-01) held on 8th October 2015 at IOCAS, Qingdao, PR China
Article
The motion behaviour of three species of intertidal foraminifera, Ammonia tepida, Cribroelphidium excavatum and Haynesina germanica, was investigated continuously in the laboratory. We first infer the presence of geotactic and phototactic responses. Significant geotactic responses were observed for all three species; A. tepida was found to be negat...
Article
Rheology is the study of how materials deform, particularly those materials not conforming to ideal solid or ideal liquid models. This is the case for much ocean water, due largely to the presence of organic exopolymeric substances, including mucilage, derived mostly from phytoplankton and bacterioplankton. This material makes the water more viscou...
Article
Full-text available
We used satellite telemetry data to investigate the movement patterns and habitat use of juvenile shortfin makos Isurus oxyrinchus (Lamnidae) tagged in the Great Australian Bight, southern Australia. Tracking durations ranged from 49–672 days and six deployments were > 1 year. During winter and spring, some shortfin makos migrated to the tropical N...