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| Jac, Cyrielle; Dupont, Priscilla; Gaboriau, Matthias; Mercky, Yann; Pelletier, Dominique; Roos, David; Sucre, Elliott; Claverie, Thomas. |
| In days of increasingly threatened marine tropical ecosystems, it is important to improve knowledge on understudied but taxonomically rich habitats. If fish assemblages from barrier and fringing reefs are generally well studied, patch reefs are much less known. The objective of the present study (part of the EPICURE project) was to better understand taxonomic and functional specificity of patch reefs fish assemblages compared to the well-studied subtidal reef flat and outer slope habitats. Unbaited rotating video systems (STAVIRO) were used to quantify fish abundance on two sitesfrom the northern Mozambic channel (Mayotte Iris bank and Geyser bank). Taxonomic and functional diversity metrics were used to compare assemblages among habitats. None of the... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00614/72586/71574.pdf |
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| Macneil, M. Aaron; Chapman, Demian D.; Heupel, Michelle; Simpfendorfer, Colin A.; Heithaus, Michael; Meekan, Mark; Harvey, Euan; Goetze, Jordan; Kiszka, Jeremy; Bond, Mark E.; Currey-randall, Leanne M.; Speed, Conrad W.; Sherman, C. Samantha; Rees, Matthew J.; Udyawer, Vinay; Flowers, Kathryn I.; Clementi, Gina; Valentin-albanese, Jasmine; Gorham, Taylor; Adam, M. Shiham; Ali, Khadeeja; Pina-amargos, Fabian; Angulo-valdes, Jorge A.; Asher, Jacob; Barcia, Laura Garcia; Beaufort, Oceane; Benjamin, Cecilie; Bernard, Anthony T. F.; Berumen, Michael L.; Bierwagen, Stacy; Bonnema, Erika; Bown, Rosalind M. K.; Bradley, Darcey; Brooks, Edd; Brown, J. Jed; Buddo, Dayne; Burke, Patrick; Caceres, Camila; Cardenosa, Diego; Carrier, Jeffrey C.; Caselle, Jennifer E.; Charloo, Venkatesh; Claverie, Thomas; Clua, Eric; Cochran, Jesse E. M.; Cook, Neil; Cramp, Jessica; D'Alberto, Brooke; De Graaf, Martin; Dornhege, Mareike; Estep, Andy; Fanovich, Lanya; Farabough, Naomi F.; Fernando, Daniel; Flam, Anna L.; Floros, Camilla; Fourqurean, Virginia; Garla, Ricardo; Gastrich, Kirk; George, Lachlan; Graham, Rory; Guttridge, Tristan; Hardenstine, Royale S.; Heck, Stephen; Henderson, Aaron C.; Hertler, Heidi; Hueter, Robert; Johnson, Mohini; Jupiter, Stacy; Kasana, Devanshi; Kessel, Steven T.; Kiilu, Benedict; Kirata, Taratu; Kuguru, Baraka; Kyne, Fabian; Langlois, Tim; Ledee, Elodie J. I.; Lindfield, Steve; Luna-acosta, Andrea; Maggs, Jade; Manjaji-matsumoto, B. Mabel; Marshall, Andrea; Matich, Philip; Mccombs, Erin; Mclean, Dianne; Meggs, Llewelyn; Moore, Stephen; Mukherji, Sushmita; Murray, Ryan; Kaimuddin, Muslimin; Newman, Stephen J.; Nogues, Josep; Obota, Clay; O'Shea, Owen; Osuka, Kennedy; Papastamatiou, Yannis P.; Perera, Nishan; Peterson, Bradley; Ponzo, Alessandro; Prasetyo, Andhika; Quamar, L. M. Sjamsul; Quinlan, Jessica; Ruiz-abierno, Alexei; Sala, Enric; Samoilys, Melita; Scharer-umpierre, Michelle; Schlaff, Audrey; Simpson, Nikola; Smith, Adam N. H.; Sparks, Lauren; Tanna, Akshay; Torres, Ruben; Travers, Marie-agnes; Van Zinnicq Bergmann, Maurits; Vigliola, Laurent; Ward, Juney; Watts, Alexandra M.; Wen, Colin; Whitman, Elizabeth; Wirsing, Aaron J.; Wothke, Aljoscha; Zarza-gonzalez, Esteban; Cinner, Joshua E.. |
| Decades of overexploitation have devastated shark populations, leaving considerable doubt as to their ecological status1,2. Yet much of what is known about sharks has been inferred from catch records in industrial fisheries, whereas far less information is available about sharks that live in coastal habitats3. Here we address this knowledge gap using data from more than 15,000 standardized baited remote underwater video stations that were deployed on 371 reefs in 58 nations to estimate the conservation status of reef sharks globally. Our results reveal the profound impact that fishing has had on reef shark populations: we observed no sharks on almost 20% of the surveyed reefs. Reef sharks were almost completely absent from reefs in several nations, and... |
| Tipo: Text |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00644/75627/83233.pdf |
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| Villon, Sébastien; Mouillot, David; Chaumont, Marc; Subsol, Gérard; Claverie, Thomas; Villéger, Sébastien. |
| Processing data from surveys using photos or videos remains a major bottleneck in ecology. Deep Learning Algorithms (DLAs) have been increasingly used to automatically identify organisms on images. However, despite recent advances, it remains difficult to control the error rate of such methods. Here, we proposed a new framework to control the error rate of DLAs. More precisely, for each species, a confidence threshold was automatically computed using a training dataset independent from the one used to train the DLAs. These species-specific thresholds were then used to post-process the outputs of the DLAs, assigning classification scores to each class for a given image including a new class called “unsure”. We applied this framework to a study case... |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00640/75244/75406.pdf |
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| Chiarello, Marlene; Auguet, Jean-christophe; Bettarel, Yvan; Bouvier, Corinne; Claverie, Thomas; Graham, Nicholas A. J.; Rieuvilleneuve, Fabien; Sucre, Elliot; Bouvier, Thierry; Villeger, Sebastien. |
| Background: The surface of marine animals is covered by abundant and diversified microbial communities, which have major roles for the health of their host While such microbiomes have been deeply examined in marine invertebrates such as corals and sponges, the microbiomes living on marine vertebrates have received less attention. Specifically, the diversity of these microbiomes, their variability among species, and their drivers are still mostly unknown, especially among the fish species living on coral reefs that contribute to key ecosystem services while they are increasingly affected by human activities. Here, we investigated these knowledge gaps analyzing the skin microbiome of 138 fish individuals belonging to 44 coral reef fish species living in the... |
| Tipo: Text |
Palavras-chave: Tropical; Teleost; Microbiota; Phylogenetic diversity; Phylosymbiosis; Phylogenetic signal. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00454/56565/74934.pdf |
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| Chiarello, Marlène; Auguet, Jean-christophe; Graham, Nicholas A. J.; Claverie, Thomas; Sucré, Elliott; Bouvier, Corinne; Rieuvilleneuve, Fabien; Restrepo-ortiz, Claudia Ximena; Bettarel, Yvan; Villéger, Sébastien; Bouvier, Thierry. |
| Coral reefs host hundreds of thousands of animal species that are increasingly threatened by anthropogenic disturbances. These animals host microbial communities at their surface, playing crucial roles for their fitness. However, the diversity of such microbiomes is mostly described in a few coral species and still poorly defined in other invertebrates and vertebrates. Given the diversity of animal microbiomes, and the diversity of host species inhabiting coral reefs, the contribution of such microbiomes to the total microbial diversity of coral reefs could be important, yet potentially vulnerable to the loss of animal species. Analysis of the surface microbiome from 74 taxa, including teleost fishes, hard and soft corals, crustaceans, echinoderms,... |
| Tipo: Text |
Palavras-chave: Skin microbiota; Phylogenetic diversity; Conservation; Marine biodiversity; Octocorallia; Scleratinia. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00629/74121/73596.pdf |
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| Boudin, Elyse; Carcaillet, Frédérique; Tribot, Anne-sophie; Carabeux, Quentin; Deter, Julie; Claverie, Thomas; Villéger, Sébastien; Mouquet, Nicolas. |
| Coral reefs are vulnerable ecosystems where a great number of fish species live. Some fish are beautiful, and some are not. This study compared the human perception of fish beauty with the ecological roles and characteristics of these fishes. It appears that ugly fish have a wider variety of roles in the coral reef ecosystem than beautiful fish do. This means that the ugly fish seem to be more important for ecosystems. The results of this study warn us about the need to preserve not just cute fishes, but the entire ecosystem, which means protecting the ugly fish as well as the beautiful ones. |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00630/74183/73786.pdf |
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| Roos, David; Dupont, Priscilla; Gaboriau, Matthias; Bigot, Lionel; Durville, Patrick; Mulochau, Thierry; Pinault, Mathieu; Wickel, Julien; Urbina-barreto, Isabel; Mouquet, Pascal; Maurel, Laurence; Cantou, Michel; Fallourd, Sophie; Guilbert, Antonin; Hoarau, Jean-marc; Aumond, Yoann; Huet, Jerome; Evano, Hugues; Sabathe, Yoann; Giannasi, Paul; Adami, Paul; Mercky, Yann; Jac, Cyrielle; Sucre, Elliott; Pelletier, Dominique; Claverie, Thomas. |
| For the first time ever at such a spatial scale, the EPICURE project is using the complementary exosystemic, functional and fisheries approaches to analyze and compare the partially exploited fish‐populating structure of the Geyser, Zélée, and Iris banks. This project focuses on three main points, which are 1) a habitat map of the three banks and an assessment of the live coral coverage as a proxy of the Geyser bank’s health, 2) a description of fish assemblages and a functional analysis relative to habitat type and time and 3) an estimate of the abundance index in structure size of the main exploited stocks. Overall, 42 habitats over 268 km² were mapped on the Geyser bank with 534 field verifications. On the Zélée bank, 24 habitats were mapped over 183... |
| Tipo: Text |
Palavras-chave: Peuplements ichtyologiques; Communautés récifales; Indicateurs populationnels; Approche fonctionnelle; Stocks halieutiques; Cartographie; Habitats; Bancs récifaux; Geyser; Iris; Zélée; Canal du Mozambique; Fish populating; Reef community; Population index; Functional approach; Fisheries stocks; Habitat map; Reef bank; Geyser; Zélée; Iris; Mozambican channel. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00434/54549/55924.pdf |
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| Tribot, Anne-sophie; Carabeux, Quentin; Deter, Julie; Claverie, Thomas; Villeger, Sebastien; Mouquet, Nicolas. |
| The biodiversity crisis has spurred scientists to assess all facets of biodiversity so that stakeholders can establish protection programs. However, species that are perceived as beautiful receive more attention than less attractive species. This dynamic could have tremendous consequences on people's willingness to preserve biodiversity. Coral reefs might be particularly affected by this issue as they are key ecosystems that provide many services, such as aesthetic and cultural benefits attracting millions of tourists each year. Here we show the results of an online photographic questionnaire completed by 8,000 participants whereby preferences were assessed for a set of 116 reef fishes. Based on these preferences, we compared the functional richness, i.e.... |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00454/56573/75113.pdf |
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