A5052506285- Marine and fisheries research
- Coral and Marine Ecosystems Studies
- Fish Ecology and Management Studies
- Marine Bivalve and Aquaculture Studies
- Marine animal studies overview
- Isotope Analysis in Ecology
- Cephalopods and Marine Biology
- Ichthyology and Marine Biology
- Underwater Acoustics Research
- Species Distribution and Climate Change
- Animal Behavior and Reproduction
- Identification and Quantification in Food
- Coastal and Marine Management
- Marine and coastal ecosystems
- Morphological variations and asymmetry
- Evolutionary Game Theory and Cooperation
- Genetic diversity and population structure
- Animal Vocal Communication and Behavior
- Plant and animal studies
- Fault Detection and Control Systems
- Soil Geostatistics and Mapping
- Fish Biology and Ecology Studies
- Land Use and Ecosystem Services
- Chemical synthesis and alkaloids
- Data Analysis with R
Marine Biodiversity Exploitation and Conservation
2015-2024
Université de Montpellier
2012-2024
Institut de Recherche pour le Développement
2014-2024
Ifremer
2012-2023
Centre National de la Recherche Scientifique
2015-2023
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2022
Station d’Écologie Théorique et Expérimentale
2013-2014
Institut de Recherche pour le Développement
2014
Laboratoire des Symbioses Tropicales et Méditerranéennes
2007-2014
Institut de Recherche pour le Développement
2007
Abstract Shin, Y-J., Shannon, L. J., Bundy, A., Coll, M., Aydin, K., Bez, N., Blanchard, J. L., Borges, M. F., Diallo, I., Diaz, E., Heymans, Hill, Johannesen, Jouffre, D., Kifani, S., Labrosse, P., Link, Mackinson, Masski, H., Möllmann, C., Neira, Ojaveer, ould Mohammed Abdallahi, Perry, Thiao, Yemane, and Cury, P. 2010. Using indicators for evaluating, comparing, communicating the ecological status of exploited marine ecosystems. 2. Setting scene. – ICES Journal Marine Science, 67:...
Woillez, M., Poulard, J-C., Rivoirard, J., Petitgas, P., and Bez, N. 2007. Indices for capturing spatial patterns their evolution in time, with application to European hake (Merluccius merluccius) the Bay of Biscay. – ICES Journal Marine Science, 64: 537–550.
Abstract Most pelagic fish live in schools. To allow fast reactions, for instance to predator attacks, these collective structures require behavioural mechanisms authorizing fast, coordinated movements. Considering the large number of individuals constituting a school small fish, crucial premise movements and reorganization is an ability transfer quickly efficiently information across whole structure. We observed anchovy reactions sea-lion attacks while ship was drifting Peruvian waters. The...
Abstract Amandè, M. J., Chassot, E., Chavance, P., Murua, H., Delgado de Molina, A., and Bez, N. 2012. Precision in bycatch estimates: the case of tuna purse-seine fisheries Indian Ocean. – ICES Journal Marine Science, 69: . Estimating bycatch, i.e. incidental catch non-target marine animals undersized individuals target species, by raising observer data to whole fishery is routine practice. The annual European tropical over period 2003–2009 was estimated at 11 590 t [95% confidence...
Understanding the ecological and anthropogenic drivers of population dynamics requires detailed studies on habitat selection spatial distribution. Although small pelagic fish aggregate in large shoals usually exhibit important structure, their time space remain unpredictable challenging. In Gulf Lions (north-western Mediterranean), sardine anchovy biomasses have declined over past 5 years causing an fishery crisis while sprat abundance rose. Applying geostatistical tools scientific acoustic...
Since the mid-1990s, drifting Fish Aggregating Devices (dFADs), artificial floating objects designed to aggregate fish, have become an important mean by which purse seine fleets catch tropical tunas. Mass deployment of dFADs, as well massive use GPS buoys track dFADs and natural objects, has raised serious concerns for state tuna stocks ecosystem functioning. Here, we combine tracks from a large proportion French Indian Atlantic oceans with data observers aboard Spanish seiners logbook...
ABSTRACT The distribution of egg and larvae mackerel, horse sardine, hake, megrim, blue whiting anchovy along the European Atlantic waters (south Portugal to Scotland) during 1998 is described. Time year, sea surface temperature bottom depth are used define spawning habitat different species. Mackerel, sardine eggs presented widest distribution, whereas megrim showed a limited restricted Celtic Sea Bay Biscay respectively. Correspondingly mackerel highest aggregation indices. Blue were found...
In the lack of fishery-independent information, catch per unit effort (CPUE) is conventional abundance index. case tropical tuna purse seine fisheries, a critical difficulty lies in definition an effective fishing effort, because fishermen use two different modes (free swimming schools versus under fish aggregating devices) alternatively during same trip. this study, vessel monitoring system (VMS) data were used operational level to study and quantify spatial dynamic activity. A Bayesian...
This study analyzes the temporal variability/stability of spatial distributions key exploited species in Gulf Lions (Northwestern Mediterranean Sea). To do so, we analyzed data from MEDITS bottom-trawl scientific surveys 1994 to 2010 at 66 fixed stations and selected 12 species. We proposed a geostatistical approach handle zero-inflated non-stationary test for stability structures. Empirical Orthogonal Functions other descriptors were then applied investigate persistence characteristics...
The desire to predict the consequences of global environmental change has been driver towards more realistic models embracing variability and uncertainties inherent in ecology. Statistical ecology gelled over past decade as a discipline that moves away from describing patterns modelling ecological processes generate these patterns. Following fourth International Ecology Conference (1–4 July 2014) Montpellier, France, we analyse current trends statistical Important advances analysis...
Abstract Faraj, A., and Bez, N. 2007. Spatial considerations for the Dakhla stock of Octopus vulgaris: indicators, patterns, fisheries interactions. – ICES Journal Marine Science, 64: 1820–1828. The common octopus (Octopus vulgaris) is target species cephalopod fishery that exploits two stocks, Cap Blanc, off southern Morocco (26°N 21°N), an area commonly referred to as Saharan Bank. Octopusvulgaris also one most abundant demersal in this highly productive area, plays a key role upwelling...
Abstract Natural floating objects (e.g., logs) have always been a component of the habitat tropical tunas. However, introduction fish aggregating devices ( FAD s) modifies this environment. To assess changes due to deployment s, we compared spatial distribution natural and artificial s), using data from observers onboard tuna purse seine vessels in Indian Ocean December 2006 2008. Although occur more commonly waters south 7°S s are common north 7°S, all types can be found everywhere. Using...
Sustainability of living resource exploitation relies on an ecosystem management approach. Within tropical tuna purse seine fisheries using fish aggregating devices (FADs), such approach incorporates the reduction bycatch, in particular vulnerable species as elasmobranchs. The levels total bycatch (in mass) from fishing operations FADs is known to be five times higher than when are caught free-swimming schools. We intend find practical solutions reduce FAD sets through investigation...
Abstract Tropical marine ecosystems are highly biodiverse and provide resources for small-scale fisheries tourism. However, precise information on fish spatial distribution is lacking, which limits our ability to reconcile exploitation conservation. We combined acoustics video observations a comprehensive description of in typical tropical environment, the Fernando de Noronha Archipelago (FNA) off Northeast Brazil. identified classified all acoustic echoes into ten assemblage two triggerfish...
Lloyd’s index of patchiness, and to a lesser extent, mean crowding, are often applied (fish or ichthyoplankton) densities, although they were designed for use with counts individuals. The consequences this erroneous application described examples. Alternative statistics presented densities. Like the these robust against zeroes cannot be considered as spatial statistics.
Summary Mapping diversity indices, that is estimating values in all locations of a given area from some sampled locations, central to numerous research and applied fields ecology. Two approaches are used map indices without including abiotic or biotic variables: (i) the indirect approach, which consists each individual species distribution over area, then stacking distributions estimate posteriori index, (ii) direct relies on computing index interpolate these studied for mapping. For both...
Background. Recruiting GPs is an issue faced by most research teams in primary care. Objectives. To assess GPs' willingness and expectations with regard to French care identify factors that may increase their participation projects. Methods. Cross-sectional study conducted a representative sample of 452 from the Rhone-Alpes region France. Results. Among 284 (63%) who participated, 85 [29.9%, 95% confidence interval (CI) = 26.4–35.3%] were willing participate as investigators 83 (29.2%, CI:...
Fisheries observer programs represent the most reliable way to collect data on fisheries bycatch. However, their limited coverage leads important gaps that preclude bycatch mitigation at basin scale. Habitat models developed from available offer a potential solution fill these gaps. We focus tropical tuna purse seine (TTPSF) span across tropics and extensively rely floating objects (FOBs) for catching schools, leading of other species associated with objects. Bycatch under is dominated by...