MARTIGNAC François
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Scientist Theme(s) : Spatial dynamics, connectivity, habitat and functional area
Ecosystems assessment and multiple anthrophic pressure
Address: UMR DECOD, 65 rue de Saint-Brieuc, Bât. 19 , CS 84215, 35042 Rennes Cedex, France Keywords: Hydrobiology, Hydroacoustics, Diadromous fish, Ecological continuity  |
Expertise
Hydroacoustics, Aquatic ecology, Ichthyology, Ecological continuity, Hydrobiology
Career
- Since 2019: Research Engineer, INRAE, UMR ESE, Rennes
- 2018-2019: Hydrobiology and hydroacoustics independent consultant, Rennes
- 2017-2018: Research Engineer, INRAE, UMR ESE, Rennes
- 2010-2017: Hydrobiology consultant, ASCONIT CONSULTANTS, Nantes (2013 to 2016: Ph.D. student, supervised by J. Guillard, J.L. Baglinière et D. Ombredane
Research
Current Research Topics
My research is at the interface between applied and basic research. The projects in which I am involved aim to improve biological knowledge of fish fauna by developing innovative methods, such as hydroacoustics, and by promoting their use by scientists and managers of aquatic environments. The techniques are non-intrusive, transposable, and are not highly influenced by environmental conditions. Consequently, they are relevant additional tools, or effective alternative methods, to acquire data that are difficult to access using the techniques currently used to monitor aquatic fauna.
Within the OFB – INRAE – L'institut Agro/Agrocampus Ouest – UPPA research centre, my work focuses on analysing migration dynamics, phenology and the dispersal mechanisms of diadromous fish, in the context of ecological connectivity restoration, especially in rivers, and global changes. My expertise in hydroacoustic methods enables me to use these innovative techniques in different environments (rivers, estuaries, coastal or marine) with tools adapted to the constraints and scientific issues. Acoustic cameras, due to their limited range and their fine image resolution, are commonly used horizontally in shallow water, whereas split-beam echosounders are more adapted in vertical and mobile surveys at greater depths.
Collaborations
- CARRTEL Research Unit, INRAE - Université Savoie Mont-Blanc, Thonon-les-Bains, France
- LPO, Réserve Naturelle Nationale des Sept-Iles, Perros-Guirec, France
- UMR LETG, CNRS - Université de Rennes 2, Rennes, France
- Environment Agency, Warrington, Angleterre
- Natural Resources Wales, Cardiff, Pays de Galles
- ICES Working Group on Fisheries Acoustics, Science and Technology member
Current projects
Automatic analysis of acoustic camera data with Convolutional Neural Networks (CNN) | Timeframe : 2019 - Keywords : Caméra acoustique ARIS, Automatisation, Réseaux de neurones convolutifs, Deep-learning |
SELUNE Multidisciplinary study of the Selune river restoration following the removal of two large dams | Timeframe : 2012 - 2028 Keywords : Connectivité / Cycle de vie / Dynamique des populations / Ecologie spatiale / Fronts de colonisation / Habitats essentiels / Interactions trophiques / Invasions biologiques / Migration / Restauration / Barrages / Biofilms / Communautés / Dispersion / Ecosystèmes / Individus / Macroinvertébrés / Phytoplankton / Plantes / Poissons / Populations / ADNe / Analyses de séries temporelles / Biologging / Capture, échantillonnage et inventaire / Génétique quantitative / Hydroacoustique / Isotopes stables / Marquage-recapture / Télémétrie |
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M.Sc. Students
HERSANT, M. (2021) .Identification automatique des especes de poissons par intelligence artificielle sur des videos acoustiques
NEDELEC, R. (2021) .Comportement et utilisation de l'habitat par le saumon adulte de retour en riviere, sur la Selune
DADURE, R. (2020) .Suivi de la migration de reproduction des aloses dans la Selune par radiopistage et hydroacoustique
MOUGET, A. (2016) .Utilisation d'une camera acoustique pour etudier la population de saumons aquatiques (Salmo salar) de la Selune
BONNIN, A. (2015) .Utilisation d?une camera acoustique pour suivre les populations de lamproies marines (<I>Petromyzon marinus</I>) de la Selune
LEBEAUD, A. (2022) Amélioration des connaissances relatives aux flux de migration du saumon atlantique dans un petit fleuve côtier normand
BEDJRA, J-K (2023) Mise au point d'échantillonnage des habitats par échosondeur
Publications
Selection of Scientific Products
Rogissart Hervé, Rautureau Clément, Cattanéo Franck, Goulon Chloé, Martignac François, Guillard Jean (2023). Acoustic camera, a non-invasive approach to monitor whitefish spawning phenology in the shallow water areas of peri-alpinelakes. 15th International Symposium on Biology and Management of Coregonid fishes (ISBMC), Sep 2023, Evian les Bains, France
Jaballah Sami, Fernandez Garcia Guglielmo, Martignac François, Parisey Nicolas, Jumel Stéphane, Roussel Jean-Marc, Dézerald Olivier (2023). A deep learning approach to detect and identify live freshwater macroinvertebrates. Aquatic Ecology, 2023, 57 (4), pp.933-949. ⟨10.1007/s10452-023-10053-7⟩
Le Quinio Azénor, de Oliveira Eric, Girard Alexandre, Guillard Jean, Roussel Jean-Marc, Zaoui Fabrice, Martignac François (2023). Automatic detection, identification and counting of anguilliform fish using in situ acoustic camera data: Development of a cross-camera morphological analysis approach. PLoS ONE, 2023, 18 (2), pp.e0273588. ⟨10.1371/journal.pone.0273588⟩
Fernandez Garcia Guglielmo, Corpetti Thomas, Nevoux Marie, Beaulaton Laurent, Martignac François (2023). AcousticIA, a deep neural network for multi-species fish detection using multiple models of acoustic cameras. Aquatic Ecology, 2023, ⟨10.1007/s10452-023-10004-2⟩
Bellon-Maurel Véronique, Lutton Evelyne, Bisquert Pierre, Brossard Ludovic, Chambaron Stephanie, Labarthe Pierre, Lagacherie Philippe, Martignac François, Molenat Jérôme, Parisey Nicolas, Picault Sébastien, Piot-Lepetit Isabelle, Veissier Isabelle (2022). Digital revolution for the agroecological transition of food systems: a responsible research and innovation perspective. Agricultural Systems, 2022, 203, pp.103524. ⟨10.1016/j.agsy.2022.103524⟩
Le Quinio Azénor, de Oliveira Eric, Girard Alexandre, Guillard Jean, Roussel Jean-Marc, Zaoui Fabrice, Martignac François (2022). Automatic detection, identification and counting of anguilliform fish using in situ acoustic camera data: development of a cross-camera morphological analysis approach. BioRxiv, In press, ⟨10.1101/2022.08.11.503684⟩
Martignac François, Baglinière Jean-Luc, Ombredane Dominique, Guillard Jean (2021). Efficiency of automatic analyses of fish passages detected by an acoustic camera using Sonar5-Pro. Aquatic Living Resources, 2021, 34 (2), 10 p. ⟨10.1051/alr/2021020⟩
Martignac François, Beaulaton Laurent (2021). Acquisition d’une caméra acoustique BluePrint Oculus M750d. OFB; Inrae. 2021, 20 p