25 results on '"Matabos, M"'
Search Results
2. Contrasting reproductive biology of two hydrothermal gastropods from the Mid-Atlantic Ridge: implications for resilience of vent communities
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Marticorena, J., Matabos, M., Sarrazin, J., and Ramirez-Llodra, E.
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- 2020
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3. Behavioural study of two hydrothermal crustacean decapods: Mirocaris fortunata and Segonzacia mesatlantica, from the Lucky Strike vent field (Mid-Atlantic Ridge)
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Matabos, M., Cuvelier, D., Brouard, J., Shillito, B., Ravaux, J., Zbinden, M., Barthelemy, D., Sarradin, P.M., and Sarrazin, J.
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- 2015
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4. Diel behavioral rhythms in sablefish (Anoplopoma fimbria) and other benthic species, as recorded by the Deep-sea cabled observatories in Barkley canyon (NEPTUNE-Canada)
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Doya, C., Aguzzi, J., Pardo, M., Matabos, M., Company, J.B., Costa, C., Mihaly, S., and Canals, M.
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- 2014
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5. Faunal changes and geographic crypticism indicate the occurrence of a biogeographic transition zone along the southern East Pacific Rise
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Matabos, M., Plouviez, S., Hourdez, S., Desbruyères, D., Legendre, P., Warén, A., Jollivet, D., and Thiébaut, E.
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- 2011
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6. Multi-parametric study of behavioural modulation in demersal decapods at the VENUS cabled observatory in Saanich Inlet, British Columbia, Canada
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Matabos, M., Aguzzi, J., Robert, K., Costa, C., Menesatti, P., Company, J.B., and Juniper, S.K.
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- 2011
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7. Geographic clines and stepping-stone patterns detected along the East Pacific Rise in the vetigastropod Lepetodrilus elevatus reflect species crypticism
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Matabos, M., Thiébaut, E., Le Guen, D., Sadosky, F., Jollivet, D., and Bonhomme, F.
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- 2008
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8. Reproductive biology of three hydrothermal vent peltospirid gastropods (Nodopelta heminoda, N. subnoda and Peltospira operculata) associated with Pompeii worms on the East Pacific Rise
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Matabos, M. and Thiebaut, E.
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- 2010
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9. Cryptic frenulates are the dominant chemosymbiotrophic fauna at Arctic and high latitude Atlantic cold seeps
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Svenning, Mette Marianne, Marticorena, J, Matabos, M, Ramirez-Llodra, E, Cathalot, C, Laes-Huon, A, Leroux, R, Donval, J-P, Sarrazin, J, Sen, Arunima, Duperron, Sébastien, Hourdez, Stéphane, Piquet, Bérénice, Léger, Nelly, Gebruk, Andrey, Le Port, Anne-Sophie, Svenning, Mette, Andersen, Ann, IFREMER- Département Etude des Ecosystèmes Profonds (DEEP/LEP), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Systématique, adaptation, évolution (SAE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Adaptation et Biologie des Invertébrés en Conditions Extrêmes (ABICE), Adaptation et diversité en milieu marin (AD2M), Station biologique de Roscoff [Roscoff] (SBR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Station biologique de Roscoff [Roscoff] (SBR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Adaptation aux milieux extrêmes, Station biologique de Roscoff (SBR), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Station biologique de Roscoff (SBR), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Station biologique de Roscoff (SBR), and Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
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0106 biological sciences ,European People ,Fauna ,Speciation ,Trophosome ,Morphology (biology) ,[SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy ,01 natural sciences ,RNA, Ribosomal, 16S ,Ethnicities ,VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 ,Electron Microscopy ,Phylogeny ,Data Management ,Sedimentary Geology ,Microscopy ,Multidisciplinary ,Latitude ,biology ,Fluorescent in Situ Hybridization ,Geography ,Arctic Regions ,Norway ,Phylogenetic Analysis ,Geology ,Cold Temperature ,Phylogenetics ,RNA, Bacterial ,Chemistry ,Physical Sciences ,Medicine ,Scanning Electron Microscopy ,Energy source ,Research Article ,Cartography ,Computer and Information Sciences ,Evolutionary Processes ,Norwegian People ,Science ,Oceans and Seas ,Zoology ,Molecular Probe Techniques ,Sulfides ,Research and Analysis Methods ,010603 evolutionary biology ,DNA, Mitochondrial ,Cryptic Speciation ,Animals ,Evolutionary Systematics ,14. Life underwater ,Symbiosis ,Molecular Biology Techniques ,Molecular Biology ,Taxonomy ,Petrology ,Evolutionary Biology ,Bacteria ,Host (biology) ,010604 marine biology & hydrobiology ,Chemical Compounds ,Biology and Life Sciences ,Polychaeta ,VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 ,biology.organism_classification ,Cold seep ,Probe Hybridization ,[SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology ,Arctic ,People and Places ,Earth Sciences ,Population Groupings ,Sediment ,Cytogenetic Techniques - Abstract
Source at https://doi.org/10.1371/journal.pone.0209273. We provide the first detailed identification of Barents Sea cold seep frenulate hosts and their symbionts. Mitochondrial COI sequence analysis, in combination with detailed morphological investigations through both light and electron microscopy was used for identifying frenulate hosts, and comparing them to Oligobrachia haakonmosbiensis and Oligobrachia webbi, two morphologically similar species known from the Norwegian Sea. Specimens from sites previously assumed to host O. haakonmosbiensis were included in our molecular analysis, which allowed us to provide new insight on the debate regarding species identity of these Oligobrachia worms. Our results indicate that high Arctic seeps are inhabited by a species that though closely related to Oligobrachia haakonmosbiensis, is nonetheless distinct. We refer to this group as the Oligobrachia sp. CPL-clade, based on the colloquial names of the sites they are currently known to inhabit. Since members of the Oligobrachia sp. CPL-clade cannot be distinguished from O. haakonmosbiensis or O. webbi based on morphology, we suggest that a complex of cryptic Oligobrachia species inhabit seeps in the Norwegian Sea and the Arctic. The symbionts of the Oligobrachia sp. CPL-clade were also found to be closely related to O. haakonmosbiensis symbionts, but genetically distinct. Fluorescent in situ hybridization and transmission electron micrographs revealed extremely dense populations of bacteria within the trophosome of members of the Oligobrachia sp. CPL-clade, which is unusual for frenulates. Bacterial genes for sulfur oxidation were detected and small rod shaped bacteria (round in cross section), typical of siboglinid-associated sulfur-oxidizing bacteria, were seen on electron micrographs of trophosome bacteriocytes, suggesting that sulfide constitutes the main energy source. We hypothesize that specific, local geochemical conditions, in particular, high sulfide fluxes and concentrations could account for the unusually high symbiont densities in members of the Oligrobrachia sp. CPL-clade.
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- 2018
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10. sFDvent: A global trait database for deep‐sea hydrothermal‐vent fauna
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Chapman, Abbie, Beaulieu, SE, Colaço, A, Gebruk, AV, Hilario, A, KIHARA, TC, Ramirez‐Llodra, E, Sarrazin, J, Tunnicliffe, V, Amon, Diva, Baker, MC, Boschen‐Rose, RE, Chen, Chong, Cooper, IJ, Copley, JT, CORBARI, L, Cordes, EE, Cuvelier, D, Duperron, S, Du Preez, C, Gollner, S, Horton, T, Hourdez, S, Krylova, EM, Linse, K, LokaBharathi, PA, Marsh, L, Matabos, M, Mills, SW, Mullineaux, LS, Rapp, HT, Reid, William, Rybakova (Goroslavskaya), E, A. Thomas, TR, Southgate, SJ, Stöhr, S, Turner, PJ, Watanabe, HK, Yasuhara, M, Bates, Amanda, Chapman, Abbie, Beaulieu, SE, Colaço, A, Gebruk, AV, Hilario, A, KIHARA, TC, Ramirez‐Llodra, E, Sarrazin, J, Tunnicliffe, V, Amon, Diva, Baker, MC, Boschen‐Rose, RE, Chen, Chong, Cooper, IJ, Copley, JT, CORBARI, L, Cordes, EE, Cuvelier, D, Duperron, S, Du Preez, C, Gollner, S, Horton, T, Hourdez, S, Krylova, EM, Linse, K, LokaBharathi, PA, Marsh, L, Matabos, M, Mills, SW, Mullineaux, LS, Rapp, HT, Reid, William, Rybakova (Goroslavskaya), E, A. Thomas, TR, Southgate, SJ, Stöhr, S, Turner, PJ, Watanabe, HK, Yasuhara, M, and Bates, Amanda
- Abstract
Motivation: Traits are increasingly being used to quantify global biodiversity patterns, with trait databases growing in size and number, across diverse taxa. Despite grow‐ ing interest in a trait‐based approach to the biodiversity of the deep sea, where the impacts of human activities (including seabed mining) accelerate, there is no single re‐ pository for species traits for deep‐sea chemosynthesis‐based ecosystems, including hydrothermal vents. Using an international, collaborative approach, we have compiled the first global‐scale trait database for deep‐sea hydrothermal‐vent fauna – sFD‐ vent (sDiv‐funded trait database for the Functional Diversity of vents). We formed a funded working group to select traits appropriate to: (a) capture the performance of vent species and their influence on ecosystem processes, and (b) compare trait‐based diversity in different ecosystems. Forty contributors, representing expertise across most known hydrothermal‐vent systems and taxa, scored species traits using online collaborative tools and shared workspaces. Here, we characterise the sFDvent da‐ tabase, describe our approach, and evaluate its scope. Finally, we compare the sFD‐ vent database to similar databases from shallow‐marine and terrestrial ecosystems to highlight how the sFDvent database can inform cross‐ecosystem comparisons. We also make the sFDvent database publicly available online by assigning a persistent, unique DOI. Main types of variable contained: Six hundred and forty‐six vent species names, associated location information (33 regions), and scores for 13 traits (in categories: community structure, generalist/specialist, geographic distribution, habitat use, life history, mobility, species associations, symbiont, and trophic structure). Contributor IDs, certainty scores, and references are also provided. Spatial location and grain: Global coverage (grain size: ocean basin), spanning eight ocean basins, including vents on 12 mid‐ocean ridges and 6 back‐arc spr
- Published
- 2019
11. Deep sea spy: a collaborative annotation tool
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Matabos, M., Borremans, C., Bossard, P., Tourolle, J., and Sarrazin, J.
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Database ,Underwater imagery ,Image annotation ,Enginyeria civil::Geologia::Oceanografia [Àrees temàtiques de la UPC] ,Comunicacions subacuàtiques ,Underwater imaging systems ,Citizen science ,Fons marins -- Investigació ,Deep-sea observatories - Abstract
Since 2010, remote hydrothermal ecosystems are continuously being monitored using video cameras deployed on instrumented platforms. The acquisition of high-frequency video data from deep-sea observatories like EMSOAzores or Ocean Networks Canada provide information on species behaviour, feeding habits, growth, reproduction and organisms’ response to changes in environmental conditions. Video cameras acquire hourly data representing thousands of hours and Tera Bytes of footage but their manual processing is time-consuming and highly labour-intensive, and cannot be comprehensively undertaken by individual researchers. In order to help preliminary manual assessment of this huge imagery archive, a free online annotation tool was developed to gather contributions from a wider community. The Deep Sea Spy system offers a fun and engaging web interface to members of the public to help perform initial footage annotations. The platform now hosts 623 active annotators who contributed 179,663 annotations to 19,541 images. Preliminary analyses highlight a high variability among participants but show promising results to detect trends in species abundance variation over time. Ultimately, the information gathered via this approach can help improving the algorithms necessary to produce accurate automated detection in imagery using a machine learning approach.
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- 2018
12. Seafloor observatories
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Clark, M., Consalvey, M., Rowden, A.A., Matabos, M., Best, M., Blandin, J., Hoeberechts, M., Juniper, S.K., Pirenne, B., Robert, K., Ruhl, H., Sarrazin, J., Vardaro, M., Clark, M., Consalvey, M., Rowden, A.A., Matabos, M., Best, M., Blandin, J., Hoeberechts, M., Juniper, S.K., Pirenne, B., Robert, K., Ruhl, H., Sarrazin, J., and Vardaro, M.
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- 2016
13. What do with biowastes: energy production or compost production? What is known about techniques for treatments and optimal valorisation of biowastes
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Bletzacker, L., Chiapello, Hélène, Delorme, Morgane, Ferrand, P., Henaut, A., Matabos, M., Necir, A., Nehme, J., Microbiologie : Risques Infectieux, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-CHU Pontchaillou [Rennes]-Faculté de Chirurgie Dentaire de Rennes-Faculté d'Odontologie-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Rennes (UR)-CHU Pontchaillou [Rennes]-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Université de Rennes - UFR d'Odontologie (UR Odontologie), and Université de Rennes (UR)-Université de Rennes (UR)
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[SDE]Environmental Sciences - Abstract
National audience; Biowastes are organic wastes that are putrescible, liable to decay or spoil, and compose the domestic wastes. Bio-Wastes are an embarrassment when they are mixed in the domestic wastes bound to incineration or the dumps. Yet processed separately, they are able to produce biogas or compost. This use is interesting for the sustainable development. However, biowastes have to be sorted to separate the dry and wet components; and inceneration and the dumps stay the main destination of these wastes.; Les biodéchets sont les matières fermentescibles riches en eau qui sont présents dans les ordures ménagères. Ils constituent une gêne pour le traitement classique des déchets par incinération ou mise en décharge, alors que, traités à part, les biodéchets permettent de produire du compost et du biogaz. Ce type de valorisation est intéressant du point de vue du développement durable. Cependant, il ne supprime que partiellement le recours aux incinérateurs ou aux décharges. De plus, la valorisation nécessite au préalable un tri efficace pour séparer biodéchets et déchets secs (notamment les débris de verre et de plastique).
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- 2009
14. Role of physico-chemical environment on gastropod assemblages at hydrothermal vents on the East Pacific Rise (13 degrees N/EPR)
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Matabos, M, Le Bris, Nadine, Pendlebury, S, Thiebaut, E, Matabos, M, Le Bris, Nadine, Pendlebury, S, and Thiebaut, E
- Abstract
Deep-sea hydrothermal vents display extreme and highly variable environmental conditions that are expected to be among the most important factors structuring associated benthic populations and communities. We tested this assumption,focusing Oil the distribution of gastropods, as well as on the demographic population structure and reproductive biology of one dominant gastropod species ill zones characterized by alvinellid polychaetes and vcstimentiferan tubeworms. A total Of 14 biological samples from both types of habitats were collected at three sites oil the East Pacific Rise 13 degrees N vent field in May 2002. At all vents except one, the physico-chemical environment was described in two steps: (1) pH, total sulphide and reduced iron concentrations have been measured in situ in Alvinella habitats and correlations to temperature were assessed at the scale of each sampled vent, and (2) assuming the consistency of these relationships within a single edifice, ranges of physicochemical factors were estimated for each biological sample from the corresponding fine scale temperature measurements. A total Of 11 gastropod species were identified from all samples and 2 main faunal assemblages were distinguished: one dominated by Lepetodrilus elevatus in the alvinellid zone as well as in the vestimentiferan zone, and one dominated by the peltospirids Nodopelta heminoda, N. subnoda and Peltospira operculata confined to the alvinellid zone. Peltospirid gastropods were dominant over lepetodrilid gastropods in the more acidic, sulphide-richer, and hotter environments. Although this pattern could be related to specific physiological tolerances to temperature and sulphide toxicity, the weak correlation between community structure and physico-chemical variables suggests that additional factors are also involved. Particularly, the lost, species richness and the overwhelming dominance of L. elevatus in one faunal assemblage suggest that this species may outcompete peltospirids and g
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- 2008
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15. The new synthesis of cabled observatory science: Technology meets deep-sea ecology
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Aguzzi, J., primary, Costa, C., additional, Company, J. B., additional, Fujiwhara, Y., additional, Favali, P., additional, Tunnicliffe, V., additional, Matabos, M., additional, Canals, M., additional, and Menesatti, P., additional
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- 2013
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16. Faunal changes and geographic crypticism indicate the occurrence of a biogeographic transition zone along the southern East Pacific Rise
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Matabos, M., primary, Plouviez, S., additional, Hourdez, S., additional, Desbruyères, D., additional, Legendre, P., additional, Warén, A., additional, Jollivet, D., additional, and Thiébaut, E., additional
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- 2010
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17. Geographic clines and stepping-stone patterns detected along the East Pacific Rise in the vetigastropod Lepetodrilus elevatus reflect species crypticism
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Matabos, M., primary, Thiébaut, E., additional, Le Guen, D., additional, Sadosky, F., additional, Jollivet, D., additional, and Bonhomme, F., additional
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- 2007
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18. Challenges to the assessment of benthic populations and biodiversity as a result of rhythmic behaviour: Video solutions from cabled observatories
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Aguzzi, J., Company, J. B., Costa, C., Matabos, M., Azzurro, E., Mánuel, A., Menesatti, P., Sardá, F., Canals, M., Delory, E., Cline, D., Favali, P., Juniper, S. K., Furushima, Y., Fujiwara, Y., Chiesa, J. J., Leonardo Marotta, Bahamon, N., Priede, I. G., Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya. Centre de Desenvolupament Tecnològic de Sistemes d'Adquisició Remota i Tractament de la Informació (SARTI), and Universitat Politècnica de Catalunya. SARTI - Centre de Desenvolupament Tecnològic de Sistemes d'Adquisició Remota i Tractament de la Informació
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Observatoris ,Enginyeria agroalimentària::Ciències de la terra i de la vida::Biologia [Àrees temàtiques de la UPC] ,Ocean bottom--Research ,Sèries temporals -- Anàlisi -- Processament de dades ,Comunicacions subacuàtiques ,Oceanographic instruments ,Enginyeria de la telecomunicació::Processament del senyal::Processament de la imatge i del senyal vídeo [Àrees temàtiques de la UPC] ,Oceanografia ,Fons marins -- Investigació ,Ecosistemes marins -- Anàlisi ,Marine species diversity ,Bioritmes ,Benthic plants ,Time-series analysis--Data processing ,Biodiversity--Research ,Cronobiologia ,Benthic animals ,Underwater imaging systems ,Biological rhythms ,Large marine ecosystems - Abstract
All marine species studied thus far show rhythmic temporal patterns in their behavioural, physiological, and molecular functions, which are collectively known as biological rhythms. Biological rhythms are generated by biological clocks that time biological functions and are synchronized by geophysical cycles, such as the solar light-dark cycle and tidal cycle. On continental margins, behavioural rhythms can be detected by diel (i.e., 24-hour based) or seasonal periodical trawling as a consequence of massive inward and outward displacements of populations to and from the sample areas. As a result, significant errors in population/stock and biodiversity assessments performed by trawling may occur if timing of sampling is not taken into account. The increasing number of cabled and permanent multiparametric seafloor observatories now allows direct, continuous, and long-lasting monitoring of benthic ecosystems and analysis in relation to several habitat cycles. This review describes the adaptation of this technology to investigations of rhythmic behaviour by focusing on automated video imaging. Diel fluctuations in the number of video-observed individuals can be used as a measure of average population rhythmic behaviour. The potential implementation of automated video image analysis in relation to animal tracking and classification procedures based on the combined use of morphometric tools and multivariate statistics is detailed in relation to populational and community studies. Based on video cameras mounted at multiparametric cabled observatories, an integrated time-series analysis protocol using chronobiomedical procedures is proposed to place video-recorded bioinformation in an oceanographic context.
19. Challenges to the assessment of benthic populations and biodiversity as a result of rhythmic behaviour: Video solutions from cabled observatories
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Aguzzi, J., Company, J. B., Costa, C., Matabos, M., Azzurro, E., Mánuel, A., Menesatti, P., Sardá, F., Canals, M., Delory, E., Cline, D., Favali, P., Juniper, S. K., Furushima, Y., Fujiwara, Y., Chiesa, J. J., Marotta, L., Bahamon, N., and Imants Priede
20. Polymer material biodegradation in the deep sea. A review.
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Chamley A, Baley C, Matabos M, Vannier P, Sarradin PM, Freyermouth F, and Davies P
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- Plastics metabolism, Oceans and Seas, Environmental Monitoring, Biodegradation, Environmental, Polymers metabolism, Water Pollutants, Chemical metabolism, Water Pollutants, Chemical analysis, Seawater chemistry, Seawater microbiology
- Abstract
The phenomenon of marine plastic pollution is now well-established, with documented impacts on marine biodiversity and biogeochemical cycles. In order to mitigate this environmental impact, a significant amount of research has been conducted in recent years with the objective of developing biodegradable alternatives to conventional polymers and their composites in marine environments. The findings of this research significantly enhanced our understanding of biodegradation mechanisms and identified promising candidates. However, the majority of these studies have been conducted in coastal marine environments, which represent a minor component of the marine ecosystem. Recent models on the transport of plastic debris in the oceans indicate that deep-sea environments are likely to be the ultimate sink for a significant proportion of plastics entering the oceans. The aim of this review is to provide an overview of the processes of biodegradation of polymers in these deep-sea environments. The diversity and specific characteristics of these environments with respect to degradation mechanisms are discussed. While the majority of deep-sea conditions are not conducive to biodegradation, studies on organic falls (wood and whale carcasses) and a few investigations into materials previously shown to be biodegradable in coastal marine environments demonstrate mechanisms that are similar to those observed in shallow waters. Nevertheless, further research is necessary to reach definitive conclusions. It is essential to extend these studies to a broader range of deep-sea environments. Additionally, new methodologies that integrate microbiology and polymer science are required to accurately assess the process of assimilation of these materials in these environments., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Alexandre Chamley reports financial support was provided by Direction Générale de l'Armement. Other authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
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- 2024
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21. Contrasted phylogeographic patterns of hydrothermal vent gastropods along South West Pacific: Woodlark Basin, a possible contact zone and/or stepping-stone.
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Poitrimol C, Thiébaut É, Daguin-Thiébaut C, Le Port AS, Ballenghien M, Tran Lu Y A, Jollivet D, Hourdez S, and Matabos M
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- Animals, Biodiversity, Ecosystem, Humans, Pacific Ocean, Phylogeny, Phylogeography, Gastropoda genetics, Hydrothermal Vents
- Abstract
Understanding drivers of biodiversity patterns is essential to evaluate the potential impact of deep-sea mining on ecosystems resilience. While the South West Pacific forms an independent biogeographic province for hydrothermal vent fauna, different degrees of connectivity among basins were previously reported for a variety of species depending on their ability to disperse. In this study, we compared phylogeographic patterns of several vent gastropods across South West Pacific back-arc basins and the newly-discovered La Scala site on the Woodlark Ridge by analysing their genetic divergence using a barcoding approach. We focused on six genera of vent gastropods widely distributed in the region: Lepetodrilus, Symmetromphalus, Lamellomphalus, Shinkailepas, Desbruyeresia and Provanna. A wide-range sampling was conducted at different vent fields across the Futuna Volcanic Arc, the Manus, Woodlark, North Fiji, and Lau Basins, during the CHUBACARC cruise in 2019. The Cox1-based genetic structure of geographic populations was examined for each taxon to delineate putative cryptic species and assess potential barriers or contact zones between basins. Results showed contrasted phylogeographic patterns among species, even between closely related species. While some species are widely distributed across basins (i.e. Shinkailepas tollmanni, Desbruyeresia melanioides and Lamellomphalus) without evidence of strong barriers to gene flow, others are restricted to one (i.e. Shinkailepas tufari complex of cryptic species, Desbruyeresia cancellata and D. costata). Other species showed intermediate patterns of isolation with different lineages separating the Manus Basin from the Lau/North Fiji Basins (i.e. Lepetodrilus schrolli, Provanna and Symmetromphalus spp.). Individuals from the Woodlark Basin were either endemic to this area (though possibly representing intermediate OTUs between the Manus Basin and the other eastern basins populations) or, coming into contact from these basins, highlighting the stepping-stone role of the Woodlark Basin in the dispersal of the South West Pacific vent fauna. Results are discussed according to the dispersal ability of species and the geological history of the South West Pacific., Competing Interests: The authors have declared that no competing interests exist.
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- 2022
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22. Biological rhythms in the deep-sea hydrothermal mussel Bathymodiolus azoricus.
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Mat AM, Sarrazin J, Markov GV, Apremont V, Dubreuil C, Eché C, Fabioux C, Klopp C, Sarradin PM, Tanguy A, Huvet A, and Matabos M
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- Animals, Ecosystem, Hydrothermal Vents, Marine Biology, Periodicity, Mytilidae physiology
- Abstract
Biological rhythms are a fundamental property of life. The deep ocean covers 66% of our planet surface and is one of the largest biomes. The deep sea has long been considered as an arrhythmic environment because sunlight is totally absent below 1,000 m depth. In the present study, we have sequenced the temporal transcriptomes of a deep-sea species, the ecosystem-structuring vent mussel Bathymodiolus azoricus. We reveal that tidal cycles predominate in the transcriptome and physiology of mussels fixed directly at hydrothermal vents at 1,688 m depth at the Mid-Atlantic Ridge, whereas daily cycles prevail in mussels sampled after laboratory acclimation. We identify B. azoricus canonical circadian clock genes, and show that oscillations observed in deep-sea mussels could be either a direct response to environmental stimulus, or be driven endogenously by one or more biological clocks. This work generates in situ insights into temporal organisation in a deep-sea organism.
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- 2020
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23. Astronomical and atmospheric impacts on deep-sea hydrothermal vent invertebrates.
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Lelièvre Y, Legendre P, Matabos M, Mihály S, Lee RW, Sarradin PM, Arango CP, and Sarrazin J
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- Animals, Ecosystem, Seawater, Tidal Waves, Atmosphere, Hydrothermal Vents, Invertebrates
- Abstract
Ocean tides and winter surface storms are among the main factors driving the dynamics and spatial structure of marine coastal species, but the understanding of their impact on deep-sea and hydrothermal vent communities is still limited. Multidisciplinary deep-sea observatories offer an essential tool to study behavioural rhythms and interactions between hydrothermal community dynamics and environmental fluctuations. Here, we investigated whether species associated with a Ridgeia piscesae tubeworm vent assemblage respond to local ocean dynamics. By tracking variations in vent macrofaunal abundance at different temporal scales, we provide the first evidence that tides and winter surface storms influence the distribution patterns of mobile and non-symbiotic hydrothermal species (i.e. pycnogonids Sericosura sp. and Polynoidae polychaetes) at more than 2 km depth. Local ocean dynamics affected the mixing between hydrothermal fluid inputs and surrounding seawater, modifying the environmental conditions in vent habitats. We suggest that hydrothermal species respond to these habitat modifications by adjusting their behaviour to ensure optimal living conditions. This behaviour may reflect a specific adaptation of vent species to their highly variable habitat., (© 2017 The Author(s).)
- Published
- 2017
- Full Text
- View/download PDF
24. A year in hypoxia: epibenthic community responses to severe oxygen deficit at a subsea observatory in a coastal inlet.
- Author
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Matabos M, Tunnicliffe V, Juniper SK, and Dean C
- Subjects
- Water Microbiology, Hypoxia, Marine Biology, Oxygen analysis, Seawater chemistry
- Abstract
Changes in ocean ventilation driven by climate change result in loss of oxygen in the open ocean that, in turn, affects coastal areas in upwelling zones such as the northeast Pacific. Saanich Inlet, on the west coast of Canada, is a natural seasonally hypoxic fjord where certain continental shelf species occur in extreme hypoxia. One study site on the VENUS cabled subsea network is located in the hypoxic zone at 104 m depth. Photographs of the same 5 m(2) area were taken with a remotely-controlled still camera every 2/3 days between October 6(th) 2009 and October 18(th) 2010 and examined for community composition, species behaviour and microbial mat features. Instruments located on a near-by platform provided high-resolution measurements of environmental variables. We applied multivariate ordination methods and a principal coordinate analysis of neighbour matrices to determine temporal structures in our dataset. Responses to seasonal hypoxia (0.1-1.27 ml/l) and its high variability on short time-scale (hours) varied among species, and their life stages. During extreme hypoxia, microbial mats developed then disappeared as a hippolytid shrimp, Spirontocaris sica, appeared in high densities (200 m(-2)) despite oxygen below 0.2 ml/l. The slender sole Lyopsetta exilis was abundant in severe hypoxia and diminished as oxygen increased in the summer. This planktivore may be responding to changes in the depth of the diurnal migration of zooplankton. While the squat lobster Munida quadrispina was common at all times, juveniles disappeared in fluctuating conditions. Despite low oxygen conditions, animal densities were high indicating that the risk from hypoxia is balanced by factors such as food availability and escape from less tolerant predators. As hypoxia increases on the continental shelf, we expect benthic communities to become dominated by low diversity, hypoxia-tolerant species of low commercial significance.
- Published
- 2012
- Full Text
- View/download PDF
25. Automated image analysis for the detection of benthic crustaceans and bacterial mat coverage using the VENUS undersea cabled network.
- Author
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Aguzzi J, Costa C, Robert K, Matabos M, Antonucci F, Juniper SK, and Menesatti P
- Subjects
- Algorithms, Animals, Anomura anatomy & histology, Bays microbiology, Canada, Discriminant Analysis, Fourier Analysis, Fractals, Least-Squares Analysis, Pacific Ocean, Population Density, Remote Sensing Technology instrumentation, Videodisc Recording instrumentation, Anomura classification, Beggiatoa growth & development, Biofilms growth & development, Ecosystem, Image Processing, Computer-Assisted methods, Remote Sensing Technology methods, Videodisc Recording methods
- Abstract
The development and deployment of sensors for undersea cabled observatories is presently biased toward the measurement of habitat variables, while sensor technologies for biological community characterization through species identification and individual counting are less common. The VENUS cabled multisensory network (Vancouver Island, Canada) deploys seafloor camera systems at several sites. Our objective in this study was to implement new automated image analysis protocols for the recognition and counting of benthic decapods (i.e., the galatheid squat lobster, Munida quadrispina), as well as for the evaluation of changes in bacterial mat coverage (i.e., Beggiatoa spp.), using a camera deployed in Saanich Inlet (103 m depth). For the counting of Munida we remotely acquired 100 digital photos at hourly intervals from 2 to 6 December 2009. In the case of bacterial mat coverage estimation, images were taken from 2 to 8 December 2009 at the same time frequency. The automated image analysis protocols for both study cases were created in MatLab 7.1. Automation for Munida counting incorporated the combination of both filtering and background correction (Median- and Top-Hat Filters) with Euclidean Distances (ED) on Red-Green-Blue (RGB) channels. The Scale-Invariant Feature Transform (SIFT) features and Fourier Descriptors (FD) of tracked objects were then extracted. Animal classifications were carried out with the tools of morphometric multivariate statistic (i.e., Partial Least Square Discriminant Analysis; PLSDA) on Mean RGB (RGBv) value for each object and Fourier Descriptors (RGBv+FD) matrices plus SIFT and ED. The SIFT approach returned the better results. Higher percentages of images were correctly classified and lower misclassification errors (an animal is present but not detected) occurred. In contrast, RGBv+FD and ED resulted in a high incidence of records being generated for non-present animals. Bacterial mat coverage was estimated in terms of Percent Coverage and Fractal Dimension. A constant Region of Interest (ROI) was defined and background extraction by a Gaussian Blurring Filter was performed. Image subtraction within ROI was followed by the sum of the RGB channels matrices. Percent Coverage was calculated on the resulting image. Fractal Dimension was estimated using the box-counting method. The images were then resized to a dimension in pixels equal to a power of 2, allowing subdivision into sub-multiple quadrants. In comparisons of manual and automated Percent Coverage and Fractal Dimension estimates, the former showed an overestimation tendency for both parameters. The primary limitations on the automatic analysis of benthic images were habitat variations in sediment texture and water column turbidity. The application of filters for background corrections is a required preliminary step for the efficient recognition of animals and bacterial mat patches.
- Published
- 2011
- Full Text
- View/download PDF
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