Adrien CheminéeSeptentrion Environnement, Marseille, France
Adrien Cheminée
PhD
About
59
Publications
18,759
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Introduction
Globally, I am interested in quantifying the factors that shape adult and juvenile fish community composition and density patterns at nested spatio-temporal scales. I aim at studying these processes in order to gather useful data for coastal managers.
Additional affiliations
September 2014 - present
September 2013 - September 2014
September 2013 - August 2014
Position
- Professor (Assistant)
Description
- Lectures and practical courses for BSc and Master students, in various disciplines: marine ecology, landscape ecology, taxonomy and physiology of marine organisms, etc.
Education
January 2009 - November 2012
September 2003 - August 2004
September 2002 - August 2003
Publications
Publications (59)
Gorgonian octocorals are threatened by global and local stressors that can act synergistically to affect their
health. In recent years, mass mortality events triggered by marine heatwaves have caused demographic declines
in Mediterranean gorgonian populations that may lead to their collapse. Potential changes in microbiome
composition under stressf...
Early-life stages play a key role in the dynamics of bipartite life cycle marine fish populations. Difficult to monitor, observations of these stages are often scattered in space and time. While Mediterranean coastlines have been highly surveyed, no effort was made to assemble historical observations. Here we build an exhaustive compilation of disp...
The warming trend of the Mediterranean Sea is a long-term process. It has resulted in a northwards and westwards range expansion and abundance increase of thermophilic species, both native and non-indigenous, and in a shrinking of the range of cold-affinity species. Marine heatwaves (MHWs) are relatively short-term extreme episodes that are respons...
Background
Climate change has accelerated the occurrence and severity of heatwaves in the Mediterranean Sea and poses a significant threat to the octocoral species that form the foundation of marine animal forests (MAFs). As coral health intricately relies on the symbiotic relationships established between corals and microbial communities, our goal...
Climate change is currently impacting and threatening the entire bio-sphere, especially coastal marine ecosystems (Harley et al., 2006). In particular, climate change has been identified as a major driver of loss in coastal marine biodiversity and ecosystem functioning linked to the increase in the frequency and the intensity of marine heatwaves (M...
Species identification remains crucial for interpreting acoustic backscatter delivered by active acoustic methodologies. The study took place in a Marine Protected Area where highly restricted areas were present such as no take zones. We used an innovative methodology coupling split-beam and multibeam echosounders to detect and classify monospecifi...
Prey fish cohabit with specialized predator fish within structurally complex habitats. How the vertical stratification of the habitat affects lethal and behavioral predator–prey interactions and contributes to explaining these patterns has never been investigated within a forest-like marine habitat, i.e., a habitat containing three vertical strata...
Imaging the marine environment is more and more useful to understand relationships between species, as well as natural processes. Developing photogrammetry allowed the use of 3D measuring to study populations dynamics of sessile organisms at various scales: from colony to population. This study focuses on red coral (Corallium rubrum), as known as p...
Coastal zones are ecosystems of high economic value but exposed to numerous disturbances, while they represent nurseries for many fish species, raising the issue of the preservation of their functions and services. In this context, the juvenile fish assemblages of all types of habitats present in shallow coastal zones were studied on the south-east...
In the Mediterranean Sea, shallow rocky reefs and the associated three-dimensional (3D) structure support rich and abundant communities; they are therefore of functional importance, in particular for the renewal of fish stocks. However, these habitats and their functions are likely to be altered by anthropogenic pressures inducing habitat transform...
Coastal zones are ecosystems of high economic value but exposed to numerous disturbances, while they represent nurseries for many fish species, raising the issue of the preservation of their functions and services. In this context, the juvenile fish assemblages of all types of habitats present in shallow coastal zones were studied on the south-east...
The sublittoral forests formed by the fucoid algae Cystoseira spp. are important juvenile habitats for many Mediterranean fish species. However, the spatial variability of juvenile fish assemblages within the forests and the potential environmental drivers, such as depth and habitat complexity, remain poorly understood. We estimated densities, size...
Man‐made infrastructures have become ubiquitous components of coastal landscapes, leading to habitat modification that affects the abundance and diversity of marine organisms. Marine coastal fish have a complex life cycle requiring different essential habitats. One of these habitats is known as a nursery, a place where juveniles can settle in large...
Along the littoral, a growing number of anthropogenic structures have caused substantial habitat destruction. Despite their detrimental impact, these constructions could play a role in the functioning of coastal ecosystems. The objective of this work was to assess the distribution of juvenile coastal fish along a seascape composed of various natura...
Survival during the settlement window is a limiting variable for recruitment. The survival is believed to be strongly determined by biological interactions and sea conditions, however it has been poorly investigated. We examined the settlement patterns related to relevant biotic and abiotic factors (i.e. Density-dependence, wind stress, wave height...
White seabream settler densities time-evolution (left) and rate of settler arrivals (right).
Left panels: measured settler (10–20 mm) density variation (dots and squares) and adjusted double sigmoid functions (lines). Right panels: values are indicated as daily % of total settlers arriving to each cove.
(TIF)
Parameters of the curve fitting settlers (10–20 mm) variations at each cove.
Lmax is the maximum juvenile density, C is the slope parameters, w is the peak width and r2 the correlation coefficient.
(DOCX)
Results of repeated measures ANOVA comparing juvenile total density and partial densities of individuals at total length (TL) of 10–20 mm (D10-20), 20–30 mm (D20-30) and ≥30 mm (D>30) over time (Sampling days, SD) at different orientations (Northeast and Southwest) and the coves (three in each orientation) off Menorca Island.
SS: Sum of Squares; DF...
General additive model of settling dynamics of the whole white seabream juvenile population.
Blue represents the northeast coves, and yellow the southwest coves. Fitted lines (solid line), 95% confidence intervals (color shaded areas) and residuals (dots) are shown.
(TIF)
White seabream mortality rate.
Density-dependent mortality relationship for juveniles smaller than 20 mm including all the individuals counted in the six coves. The vertical axis represents the daily mortality rate in percentage.
(TIF)
Arborescent macro-algae forests covering temperate rocky reefs are a known habitat for juvenile fishes. However, in the Mediterranean, these forests are undergoing severe transformations due to pressures
from global change. In our study, juvenile fish assemblages differed between pristine arborescent forests (Cystoseira brachycarpa var. balearica)...
The concentration of human activities along the shoreline induces high levels of pressure, notably seascape urbanization caused by the proliferation of coastal and marine infrastructures such as ports, harbors, marinas and coastal defense structures. Because they are localized in sheltered and shallow coastal areas, these infrastructures inevitably...
The role of the meadows of the Mediterranean seagrass Cymodocea nodosa as nursery habitats for fish remains largely unknown and there are only few studies investigating the influence of their structure on juvenile assemblages. Here, we monitored juvenile fish assemblages among shallow Cymodocea nodosa meadows (0–1 meter) in Minorca Island (north-we...
Coastal nursery habitats are essential for the renewal of adult fish populations.We quantified the availability of a
coastal nursery habitat (shallowheterogeneous rocky bottoms) and the spatial variability of its juvenile fish populations
along 250 km of the Catalan coastline (France and Spain). Nurserieswere present in 27% of the coastline,
but on...
Concern has increased in recent decades regarding processes influencing fish juvenile density distributions; indeed, juveniles determine the replenishment of populations and their habitats are often found in shallow coastal areas, where human impacts are concentrated. We aimed to measure the relative importance of seascape attributes at various spa...
In Mediterranean subtidal rocky reefs, Cystoseira spp. (Phaeophyceae) form dense canopies up to 1 m high. Such habitats, called 'Cystoseira forests', are regressing across the entire Mediterranean Sea due to multiple anthropogenic stressors, as are other large brown algae forests worldwide. Cystoseira forests are being replaced by structurally less...
List of the macrophytes operational taxonomic units and their functional group.
(DOCX)
Supplementary analysis of fish body size distributions across habitats: Methods and Results.
(See also S2 Fig)
(DOCX)
Fish body-size distributions compared across habitat types and Localities.
Curves are smoothed histograms (Kernel density estimations) of total lengths of all sampled fish (crypto- or necto- benthic) within each level of the combined factor habitat X locality-protection (region-time). The surfaces below the curves (the integrals) are proportional t...
Sampling of necto-benthic fish assemblage structure using the UVC methodology ‘9 m² stationary-point snapshot-count’.
The 9m² sampling area was the semicircle 2.5 m in radius in front of the diver, without considering the inner part, semicircle 0.7 m in radius.
(TIFF)
Geographical coordinates of the 23 sampling sites.
Latitude (North) and Longitude (East) are in decimal degrees (See also Fig 2).
(DOCX)
Possible mechanisms underlying differences in fish assemblage composition between Cystoseira forest, turfs and barrens.
A discussion enriched by previous studies on density patterns and fish life history traits found in the literature.
(DOCX)
Oral presentation https://sfecologie2016.sciencesconf.org/108871
Human activities facilitate coastal habitat transformation and homogenization. The spread of marine invasive species is one example. This in turn may influence fish recruitment and the subsequent replenishment of adult assemblages. We tested habitat complexity effect on fish (Teleostei) recruitment by experimentally manipulating meadows of the habi...
Educational video about our eCATE research project (nursery habitats and connectivity of coastal fishes): we use underwater monitoring methods (UVC, telemetry) to better understand the replenishment of key marine species
In this study we analyse the influence of environmental factors on settlement and recruitment of Diplodus sargus in shallow rocky habitats of Minorca. We compare the variability in settlement and post-settler population dynamics in two areas, north and south, with different wind regimes and ocean dynamics. During 2012, settlement was measured by di...
This study highlighted that the management of coastal fish assemblages still requires to upgrade and involve not only the approach of controlling catches but also in addition the management of all the essential habitats frequented during the different stages in the life cycle of these species. On the basis of a specific case study, the nurseries of...
Macrophyte-formed habitats are important components of coastal temperate seascapes. They usually host higher diversity and density of fishes, including both adult and juvenile individuals. Here we synthesized the ecological processes underlying differences in fish assemblage structure among habitats, with an emphasis on the effects of habitat archi...
We studied effects of depth and Cystoseira balearica forests canopy height on coastal juvenile fish assemblages of Minorca Island. Results showed a clear differentiation of juvenile fish assemblages due to depth: assemblage in the shallowest range (3-4m) was characterized by higher densities of Thalassoma pavo, deeper ones (6-8, 10-12 m) by higher...
In Mediterranean infralittoral rocky reefs, macroalgal forests formed by Cystoseira species regress as a consequence of anthropogenic stressors, and are usually replaced by less complex assemblages (e.g. shrub-like photophilous seaweeds, coralline barrens). In order to assess the consequences of such a shift, we described the patterns of fish assem...
The aim of this PhD was to better understand the characteristics and consequences of the transformations of Mediterranean
infralittoral fish (Teleostei) nursery habitats, in order to gather useful knowledge for management of coastal areas in
Mediterranean regions. Among the seascape mosaic, Cystoseira forests, a threatened macrophytes-formed habita...
Many studies have reported increasing trends in fish abundance and biomass inside marine reserves. This "reserve effect" may lead to increased fecundity and production inside the reserve, enhancing recruitment in surrounding areas. However, the increase in piscivorous and other large carnivorous fish species (i.e. predators) could also translate to...
This work aimed at performing a large scale assessment of Diplodus spp. (Sparidae) nurseries along the rocky shore of Marseilles (France, NW Mediterranean) by locating and quantifying nursery microhabitats and estimating the settlement pattern along this shore in 2004. Nursery grounds of Diplodus spp. represented only 9% of the 52 km-long rocky sho...
Questions
Questions (2)
It is not available online, although the journal exists since several years ....
During my PhD, I studied the nursery value for fishes (sensu Beck et al 2001) of macroalgae forest on temperate rocky reefs of the Mediterranean. Fucales (Cystoseira spp.) forest showed a higher nursery value for Labridae fish species than bush-like or bare substratum neighbouring rocky habitats. Given this, I wonder if in tropical environments, reef habitats that are being colonized by macroalgae (Turbinaria, Sargassum) may show an increased density for some juvenile fish taxa. In other words, while the shift from coral reefs to macro algae-dominated reefs has been described to reduce diversity and abundances of many organisms, I wonder if a beneficial effect may as well result from this habitat shift for fish assemblage replenishment.
