Consulta: creatorFacets:"Menot, Lenaick"
Registros recuperados: 39
Data/hora: 06/06/2024 03:44:37

Two deep-living rhodaliids (Cnidaria, Siphonophora) from the Mid-Atlantic Ridge
Provedor de dados: 5
Autores: Mapstone, Gillian M.; Corbari, Laure; Menot, Lenaick.
Rhodaliids are a semi-benthic family of 14 physonect siphonophore species found in all oceans, except the Mediterranean and Arctic. They inhabit species-specific depth ranges in isolated locations and records are mostly sparse. Here, the first ever observations of rhodaliids from the Mid-Atlantic Ridge are given, from three images of two putative species. They come from depths of 3482 and 3667–3670 metres, on the Mid-Atlantic Ridge (MAR) at 23°N and 26°N, near two hydrothermal vents. Rhodaliids are very delicate animals and extremely hard to sample, particularly from such great depths, and the only comparable deep-living species so far described is the Galapagos Dandelion (Thermopalia taraxaca) from 2480–2938 metres on the Galapagos Rift and East Pacific...
Tipo: Text
Palavras-chave: Deep-sea; Mid-Atlantic Ridge; Rhodaliid; Siphonophore.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00361/47207/51395.pdf

The vesicomyid bivalve habitat at cold seeps supports heterogeneous and dynamic macrofaunal assemblages
Provedor de dados: 5
Autores: Guillon, Erwan; Menot, Lenaick; Decker, Carole; Krylova, Elena; Olu, Karine.
The high biodiversity found at cold seeps, despite elevated concentrations of methane and hydrogen sulfide, is attributed to multiple sources of habitat heterogeneity. In addition to geological and geochemical processes, biogenic habitats formed by large symbiont-bearing taxa, such as bivalves and siboglinid tubeworms, or by microbial mats drive the biodiversity of small-sized fauna. However, because these habitat-forming species also depend on geochemical gradients, the respective influence of abiotic and biotic factors in structuring associated macrofaunal communities is often unresolved. The giant pockmark Regab located at 3200 m depth on the Congo margin is characterized by different fluid-flow regimes, providing a mosaic of the most common biogenic...
Tipo: Text
Palavras-chave: Cold-seep; Macrofauna; Diversity; Dynamics; Vesicomyid clams; Gulf of Guinea.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00361/47210/47165.pdf

Compléments à la réponse à la saisine 2008-1014 sur les pressions potentielles des engins de pêche sur les habitats et espèces listés dans les Directives Habitats (92/43/EEC) et Oiseaux (2009/147/CE), pour les sennes danoises et écossaises ainsi qu’envers les récifs côtiers et les récifs circalittoraux.
Provedor de dados: 5
Autores: Biseau, Alain; Le Mao, Patrick; Sartoretto, Stephane; Tourolle, Julie; Menot, Lenaick; Fabri, Marie-claire; Larnaud, Pascal; Drogou, Mickael; Morandeau, Fabien; Vacherot, Jean-philippe; Vermard, Youen.
Tipo: Text
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00300/41147/41077.pdf

Spatial heterogeneity of macrofaunal communities in and near a giant pockmark area in the deep Gulf of Guinea
Provedor de dados: 5
Autores: Menot, Lenaick; Galeron, Joelle; Olu, Karine; Caprais, Jean-claude; Crassous, Philippe; Khripounoff, Alexis; Sibuet, Myriam.
The structure and familial-level composition of macrofaunal communities were examined within and at distance from the giant pockmark Regab in the Southern Gulf of Guinea, at 3200 m depth. The two main questions addressed in this study were (i) does habitat partitioning by large symbiont-bearing taxa. influence macrofaunal assemblages and their environment? and (ii) to what extent does the chemosynthesis-based ecosystem influence the structure and the composition of nearby macrobenthic communities? Along two radials, at sites from 250 to 1000 m away from the active centre of the cold seep, the abundance and composition of the macrofauna were typical of a deep-sea community at that depth. Except for a few cores sampled in or near dead vesicomyid fields at...
Tipo: Text
Palavras-chave: Cold seep; Diversity; Gulf of Guinea; Habitat heterogeneity; Macrofauna; Open slope; Siboglinid tubeworms; Vesicomyid clams.
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00002/11282/8099.pdf

New genera and species from the Equatorial Pacific provide phylogenetic insights into deep-sea Polynoidae (Annelida)
Provedor de dados: 5
Autores: Bonifacio, Paulo; Menot, Lenaick.
Polynoidae contains ~900 species within 18 subfamilies, some of them restricted to the deep sea. Macellicephalinae is the most diverse among these deep-sea subfamilies. In the abyssal Equatorial Pacific Ocean, the biodiversity of benthic communities is at stake in the Clarion-Clipperton Fracture Zone (CCFZ) owing to increased industrial interest in polymetallic nodules. The records of polychaetes in this region are scarce. Data gathered during the JPI Oceans cruise SO239 made a significant contribution to fill this gap, with five different localities sampled between 4000 and 5000 m depth. Benthic samples collected using an epibenthic sledge or a remotely operated vehicle resulted in a large collection of polynoids. The aims of this study are as follows:...
Tipo: Text
Palavras-chave: Deep sea; Identification key; Molecular systematics; Morphology; New genera; New species; Phylogeny; Polychaeta.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00467/57902/60217.pdf

Les écosystèmes marins des domaines bathyal et abyssal de nos côtes.
Provedor de dados: 5
Autores: Fabri, Marie-claire; Baudrier, Jerome; Menot, Lenaick; Van Den Beld, Inge.
Tipo: Text
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00404/51521/52115.pdf

Marine litter in submarine canyons of the Bay of Biscay
Provedor de dados: 5
Autores: Van Den Beld, Inge; Guillaumont, Brigitte; Menot, Lenaick; Bayle, Christophe; Arnaud-haond, Sophie; Bourillet, Jean-francois.
Marine litter is a matter of increasing concern worldwide, from shallow seas to the open ocean and from beaches to the deep-seafloor. Indeed, the deep sea may be the ultimate repository of a large proportion of litter in the ocean.  We used footage acquired with a Remotely Operated Vehicle (ROV) and a towed camera to investigate the distribution and composition of litter in the submarine canyons of the Bay of Biscay. This bay contains many submarine canyons housing Vulnerable Marine Ecosystems (VMEs) such as scleractinian coral habitats. VMEs are considered to be important for fish and they increase the local biodiversity. The objectives of the study were to investigate and discuss: i) litter density, ii) the principal sources of litter, iii) the influence...
Tipo: Text
Palavras-chave: Litter; Anthropogenic impact; Canyons; Deep Sea; Bay of Biscay; ROV; Towed camera.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00332/44363/43968.pdf

Food-Web Complexity in Guaymas Basin Hydrothermal Vents and Cold Seeps
Provedor de dados: 5
Autores: Portail, Marie; Olu, Karine; Dubois, Stanislas; Escobar-briones, Elva; Gelinas, Yves; Menot, Lenaick; Sarrazin, Jozee.
In the Guaymas Basin, the presence of cold seeps and hydrothermal vents in close proximity, similar sedimentary settings and comparable depths offers a unique opportunity to assess and compare the functioning of these deep-sea chemosynthetic ecosystems. The food webs of five seep and four vent assemblages were studied using stable carbon and nitrogen isotope analyses. Although the two ecosystems shared similar potential basal sources, their food webs differed: seeps relied predominantly on methanotrophy and thiotrophy via the Calvin-Benson-Bassham (CBB) cycle and vents on petroleum-derived organic matter and thiotrophy via the CBB and reductive tricarboxylic acid (rTCA) cycles. In contrast to symbiotic species, the heterotrophic fauna exhibited high...
Tipo: Text
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00353/46390/46018.pdf

Biological responses to disturbance from simulated deep-sea polymetallic nodule mining
Provedor de dados: 5
Autores: Jones, Daniel O. B.; Kaiser, Stefanie; Sweetman, Andrew K.; Smith, Craig R.; Menot, Lenaick; Vink, Annemiek; Trueblood, Dwight; Greinert, Jens; Billett, David S. M.; Arbizu, Pedro Martinez; Radziejewska, Teresa; Singh, Ravail; Ingole, Baban; Stratmann, Tanja; Simon-lledo, Erik; Durden, Jennifer M.; Clark, Malcolm R.
Commercial-scale mining for polymetallic nodules could have a major impact on the deep-sea environment, but the effects of these mining activities on deep-sea ecosystems are very poorly known. The first commercial test mining for polymetallic nodules was carried out in 1970. Since then a number of small-scale commercial test mining or scientific disturbance studies have been carried out. Here we evaluate changes in faunal densities and diversity of benthic communities measured in response to these 11 simulated or test nodule mining disturbances using meta-analysis techniques. We find that impacts are often severe immediately after mining, with major negative changes in density and diversity of most groups occurring. However, in some cases, the mobile fauna...
Tipo: Text
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00371/48212/48330.pdf

Meiofauna Community in Soft Sediments at TAG and Snake Pit Hydrothermal Vent Fields
Provedor de dados: 5
Autores: Spedicato, Adriana; Sánchez, Nuria; Pastor, Lucie; Menot, Lenaick; Zeppilli, Daniela.
The risk assessment of seafloor massive sulfide (SMS) mining on meiobenthic organisms, specifically on soft-sediment meiofauna, is impeded by a lack of knowledge on the biology and ecology of these communities. In this study, we investigated sediment samples taken in proximity of active vents at Trans-Atlantic Geotraverse (TAG) and Snake Pit, two hydrothermal vent fields of the Mid-Atlantic Ridge, in order to explore metazoan meiofauna, particularly nematode community, and its relation to organic carbon, total nitrogen, total sulfur, and dissolved oxygen. Organic carbon and nitrogen contents were low at both sites. High concentrations of total sulfur and low oxygen penetration were found at Snake Pit compared to TAG. Snake Pit showed approximately four...
Tipo: Text
Palavras-chave: Meiobenthos; Nematoda; Mid-Atlantic Ridge; Seafloor massive sulfides; Biodiversity.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00629/74061/73507.pdf

Resilience of benthic deep-sea fauna to mining activities
Provedor de dados: 5
Autores: Gollner, Sabine; Kaiser, Stefanie; Menzel, Lena; Jones, Daniel O. B.; Brown, Alastair; Mestre, Nelia C.; Van Oevelen, Dick; Menot, Lenaick; Colaco, Ana; Canals, Miguel; Cuvelier, Daphne; Durden, Jennifer M.; Gebruk, Andrey; Egho, Great A.; Haeckel, Matthias; Marcon, Yann; Mevenkamp, Lisa; Morato, Telmo; Pham, Christopher K.; Purser, Autun; Sanchez-vidal, Anna; Vanreusel, Ann; Vink, Annemiek; Arbizu, Pedro Martinez.
With increasing demand for mineral resources, extraction of polymetallic sulphides at hydrothermal vents, cobalt-rich ferromanganese crusts at seamounts, and polymetallic nodules on abyssal plains may be imminent. Here, we shortly introduce ecosystem characteristics of mining areas, report on recent mining developments, and identify potential stress and disturbances created by mining. We analyze species’ potential resistance to future mining and perform meta-analyses on population density and diversity recovery after disturbances most similar to mining: volcanic eruptions at vents, fisheries on seamounts, and experiments that mimic nodule mining on abyssal plains. We report wide variation in recovery rates among taxa, size, and mobility of fauna. While...
Tipo: Text
Palavras-chave: Deep ocean; Disturbance; Minerals; Mining; Abyssal plains; Hydrothermal vents; Seamounts; Resilience; Recovery; Benthos.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00382/49291/49690.pdf

Man and the Last Great Wilderness: Human Impact on the Deep Sea
Provedor de dados: 5
Autores: Ramirez-llodra, Eva; Tyler, Paul A.; Baker, Maria C.; Bergstad, Odd Aksel; Clark, Malcolm R.; Escobar, Elva; Levin, Lisa A.; Menot, Lenaick; Rowden, Ashley A.; Smith, Craig R.; Van Dover, Cindy L.
The deep sea, the largest ecosystem on Earth and one of the least studied, harbours high biodiversity and provides a wealth of resources. Although humans have used the oceans for millennia, technological developments now allow exploitation of fisheries resources, hydrocarbons and minerals below 2000 m depth. The remoteness of the deep seafloor has promoted the disposal of residues and litter. Ocean acidification and climate change now bring a new dimension of global effects. Thus the challenges facing the deep sea are large and accelerating, providing a new imperative for the science community, industry and national and international organizations to work together to develop successful exploitation management and conservation of the deep-sea ecosystem....
Tipo: Text
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00044/15485/12876.pdf

Patterns of Macrofaunal Biodiversity Across the Clarion-Clipperton Zone: An Area Targeted for Seabed Mining
Provedor de dados: 5
Autores: Washburn, Travis W.; Menot, Lenaick; Bonifácio, Paulo; Pape, Ellen; Błażewicz, Magdalena; Bribiesca-contreras, Guadalupe; Dahlgren, Thomas G.; Fukushima, Tomohiko; Glover, Adrian G.; Ju, Se Jong; Kaiser, Stefanie; Yu, Ok Hwan; Smith, Craig R.
Macrofauna are an abundant and diverse component of abyssal benthic communities and are likely to be heavily impacted by polymetallic nodule mining in the Clarion-Clipperton Zone (CCZ). In 2012, the International Seabed Authority (ISA) used available benthic biodiversity data and environmental proxies to establish nine no-mining areas, called Areas of Particular Environmental Interest (APEIs) in the CCZ. The APEIs were intended as a representative system of protected areas to safeguard biodiversity and ecosystem function across the region from mining impacts. Since 2012, a number of research programs have collected additional ecological baseline data from the CCZ. We assemble and analyze macrofaunal biodiversity data sets from eight studies, focusing on...
Tipo: Text
Palavras-chave: Macrofauna; Deep-sea mining; Biodiversity; Polychaeta; Manganese nodules; POC flux; Species ranges; Areas of particular environmental interest.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00687/79937/82834.pdf

Mesure de l’état écologique des habitats benthiques du domaine bathyal à partir de l’imagerie optique. (Sélection de métriques et proposition d’une stratégie de surveillance)
Provedor de dados: 5
Autores: Pedel, Laura; Fabri, Marie-claire; Menot, Lenaick; Van Den Beld, Inge.
Cette réflexion a été réalisée dans le cadre du Bon Etat Ecologique pour la DCSMM (Directive Cadre pour la Stratégie sur le Milieu Marin). Elle est préalable à la construction d'un indicateur de l'Etat Ecologique des communautés benthiques du domaine profond, pour lesquelles il n'existe rien actuellement. Cette réflexion fait suite à une étude bibliographique des indices existants. Voir rapport ci-après: Pedel, L., Fabri, M.C., 2012. Etat de l'art sur les indices existant concernant l'Etat Ecologique des habitats benthiques du domaine profond. DCSMM Bon Etat Ecologique (Ministère de l'Écologie, du Développement Durable, des Transports et du Logement), Ifremer, 1-71.
Tipo: Text
Palavras-chave: DCSMM; Méditerranée; BEE; Bathyal; Vidéos; Photos; Indices.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00171/28271/26523.pdf

Deep, diverse and definitely different: unique attributes of the world's largest ecosystem
Provedor de dados: 5
Autores: Ramirez-llodra, E.; Brandt, A.; Danovaro, R.; De Mol, B.; Escobar, E.; German, C. R.; Levin, L. A.; Arbizu, P. Martinez; Menot, Lenaick; Buhl-mortensen, P.; Narayanaswamy, B. E.; Smith, C. R.; Tittensor, D. P.; Tyler, P. A.; Vanreusel, A.; Vecchione, M.
The deep sea, the largest biome on Earth, has a series of characteristics that make this environment both distinct from other marine and land ecosystems and unique for the entire planet. This review describes these patterns and processes, from geological settings to biological processes, biodiversity and biogeographical patterns. It concludes with a brief discussion of current threats from anthropogenic activities to deep-sea habitats and their fauna. Investigations of deep-sea habitats and their fauna began in the late 19th century. In the intervening years, technological developments and stimulating discoveries have promoted deep-sea research and changed our way of understanding life on the planet. Nevertheless, the deep sea is still mostly unknown and...
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00017/12816/9753.pdf

Ecological Role of Submarine Canyons and Need for Canyon Conservation: A Review
Provedor de dados: 5
Autores: Fernandez-arcaya, Ulla; Ramirez-llodra, Eva; Aguzzi, Jacopo; Allcock, A. Louise; Davies, Jaime S.; Dissanayake, Awantha; Harris, Peter; Howell, Kerry; Huvenne, Veerle A.i.; Macmillan-lawler, Miles; Martín, Jacobo; Menot, Lenaick; Nizinski, Martha; Puig, Pere; Rowden, Ashley A.; Sanchez, Florence; Van Den Beld, Inge.
Submarine canyons are major geomorphic features of continental margins around the world. Several recent multidisciplinary projects focused on the study of canyons have considerably increased our understanding of their ecological role, the goods, and services they provide to human populations, and the impacts that human activities have on their overall ecological condition. Pressures from human activities include fishing, dumping of land-based mine tailings, and oil and gas extraction. Moreover, hydrodynamic processes of canyons enhance the down-canyon transport of litter. The effects of climate change may modify the intensity of currents. This potential hydrographic change is predicted to impact the structure and functioning of canyon communities as well...
Tipo: Text
Palavras-chave: Submarine canyons; Ecosystem service; Anthropogenic impacts; Conservation; Management.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00369/48059/48147.pdf

Beyond the hydrothermal vents: Megafauna of the Mid-Atlantic Ridge
Provedor de dados: 5
Autores: Menot, Lenaick; Planchette, Fanny.
In the French exploration area for Seafloor Massive Sulfides, two cruises with the HOV Nautile and one cruise with the ROV Victor 6000 have been carried out in 2014, 2017 and 2018. The BICOSE1 cruise (2014) and Bicose2 cruise (2018) focused on the two vent fields TAG and Snake Pit while during the HERMINE cruise (2017), the exploration contract was explored from south (21°N) to North (26°N). The megafauna and geomorphological have been annotated from HOV- and ROV-videos. The seafloor is dominated by hard substrates, mainly basalts, locally interspaced by patches of soft-sediments. Most the dives were carried out at depth deeper than 3000 m. At those depths, and beyond the influence of hydrothermal vents, which gradually decreases within a hundred meter of...
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00469/58078/60486.pdf

Occurrences connues des espèces indicatrices d’Ecosystèmes Marins Vulnérables de Méditerranée
Provedor de dados: 5
Autores: Menot, Lenaick; Fabri, Marie-claire; Vaz, Sandrine.
Dans le cadre de la mise en œuvre de la Directive Cadre sur le Milieu Marin (DCSMM), l’un des objectifs environnementaux est d’éviter l’abrasion et l’étouffement des zones les plus représentatives des habitats profonds (Ecosystèmes Marins Vulnérables, EMV). Pour la façade méditerranéenne, la fiche d’opérationnalisation de cet objectif (D01-HB-OE10) définie les EMV comme incluant le Corail Bambou (Isidella elongata), les coraux froids, les fonds à crinoïdes (Leptometra phalangium) et les fonds à pennatulaires (Funiculina quadrangularis) au-delà de 200 m de profondeur ou au-delà de 60m de profondeur dans le cas particulier du plateau oriental corse. L’Ifremer en tant que contributeur technique est chargé d’agréger les données existantes sur les occurrences...
Tipo: Text
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00676/78812/81056.pdf

High species richness and unique composition of the tanaidacean communities associated with five areas in the Pacific polymetallic nodule fields
Provedor de dados: 5
Autores: Błażewicz, Magdalena; Jóźwiak, Piotr; Menot, Lenaick; Pabis, Krzysztof.
The benthic fauna associated with polymetallic nodule fields is scarcely studied. Studies on species richness and distribution patterns are indispensable for the conservation of the abyssal ecosystem and for the development of management strategies for sustained commercial activities in the future. Here, we analysed the distribution patterns and diversity of tanaidacean communities associated with four International Seabed Authority licenced areas (BGR, IOM, GSR, Ifremer) located in the Clarion-Clipperton Fracture Zone (North-East equatorial Pacific) and the one Area of Particular Environmental Interests (APEI3). The study was based on 34 box core samples collected at depths ranging from 4,200 to 5,000 m. Altogether, 98 species (446 individuals) were...
Tipo: Text
Palavras-chave: Peracarida; Biodiversity; Productivity; Deep-sea mining; Conservation.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00508/61956/66046.pdf

Guide MIOP - Méthode pour l'acquisition d'Imagerie OPtique (MIOP) pour le suivi de l'Etat Ecologique des écosystèmes marins profonds benthiques
Provedor de dados: 5
Autores: Fabri, Marie-claire; Pedel, Laura; Menot, Lenaick; Van Den Beld, Inge.
Ce guide reprend l'ensemble des métriques proposées dans le cadre de la stratégie de surveillance nationale des écosystèmes benthiques profonds évoquées dans le rapport "mesure de l'état écologique des habitats benthiques du domaine bathyal à partir de l'imagerie optique (Sélection de métrique et proposition d'une stratégie de surveillance = stratégie d'échantillonnage)" (Pedel et al. 2013). Il décrit les différentes méthodes d'acquisition vidéo selon les métriques à mesurer: 1.4 Répartition des écosystèmes 1.5 Etendue d'un habitat 1.6 Etat des communautés benthiques (Densité, Taux de couverture, Richesse et composition spécifique, Etat des colonies) 1.3 Structure de taille d'une population Une validation des standards reste à faire avec les pays européens...
Tipo: Text
Palavras-chave: DCSMM; Méditerranée; Etat écologique; Bathyal; Vidéos; Photos; Mesure de métriques.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00172/28305/26581.pdf

Semi-automatic classification of benthic habitats based on seafloor geomorphology in the French Exploration Contract for Polymetallic Nodules (CCFZ)
Provedor de dados: 5
Autores: Besson, Florian; Bermell, Sylvain; Menot, Lenaick.
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00635/74698/74636.pdf

Climate‐induced changes in the suitable habitat of cold‐water corals and commercially important deep‐sea fishes in the North Atlantic
Provedor de dados: 5
Autores: Morato, Telmo; González‐irusta, José‐manuel; Dominguez‐carrió, Carlos; Wei, Chih‐lin; Davies, Andrew; Sweetman, Andrew K.; Taranto, Gerald H.; Beazley, Lindsay; García‐alegre, Ana; Grehan, Anthony; Laffargue, Pascal; Murillo, Francisco Javier; Sacau, Mar; Vaz, Sandrine; Kenchington, Ellen; Arnaud-haond, Sophie; Callery, Oisín; Chimienti, Giovanni; Cordes, Erik; Egilsdottir, Hronn; Freiwald, André; Gasbarro, Ryan; Gutiérrez‐zárate, Cristina; Gianni, Matthew; Gilkinson, Kent; Wareham Hayes, Vonda E.; Hebbeln, Dierk; Hedges, Kevin; Henry, Lea‐anne; Johnson, David; Koen‐alonso, Mariano; Lirette, Cam; Mastrototaro, Francesco; Menot, Lenaick; Molodtsova, Tina; Durán Muñoz, Pablo; Orejas, Covadonga; Pennino, Maria Grazia; Puerta, Patricia; Ragnarsson, Stefán Á.; Ramiro‐sánchez, Berta; Rice, Jake; Rivera, Jesús; Roberts, J. Murray; Ross, Steve W.; Rueda, José L.; Sampaio, Íris; Snelgrove, Paul; Stirling, David; Treble, Margaret A.; Urra, Javier; Vad, Johanne; Oevelen, Dick; Watling, Les; Walkusz, Wojciech; Wienberg, Claudia; Woillez, Mathieu; Levin, Lisa A.; Carreiro‐silva, Marina.
The deep sea plays a critical role in global climate regulation through uptake and storage of heat and carbon dioxide. However, this regulating service causes warming, acidification and deoxygenation of deep waters, leading to decreased food availability at the seafloor. These changes and their projections are likely to affect productivity, biodiversity and distributions of deep‐sea fauna, thereby compromising key ecosystem services. Understanding how climate change can lead to shifts in deep‐sea species distributions is critically important in developing management measures. We used environmental niche modelling along with the best available species occurrence data and environmental parameters to model habitat suitability for key cold‐water coral and...
Tipo: Text
Palavras-chave: Climate change; Cold-water corals; Deep-sea; Fisheries; Fishes; Habitat suitability modelling; Octocorals; Scleractinians; Species distribution models; Vulnerable marine ecosystems.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00610/72211/71007.pdf

Comparative study of vent and seep macrofaunal communities in the Guaymas Basin
Provedor de dados: 5
Autores: Portail, Marie; Olu, Karine; Escobar-briones, E.; Caprais, Jean-claude; Menot, Lenaick; Waeles, Mathieu; Cruaud, Perrine; Sarradin, Pierre-marie; Godfroy, Anne; Sarrazin, Jozee.
Understanding the ecological processes and connectivity of chemosynthetic deep-sea ecosystems requires comparative studies. In the Guaymas Basin (Gulf of California, Mexico), the presence of seeps and vents in the absence of a biogeographic barrier, and comparable sedimentary settings and depths offers a unique opportunity to assess the role of ecosystem-specific environmental conditions on macrofaunal communities. Six seep and four vent assemblages were studied, three of which were characterised by common major foundation taxa: vesicomyid bivalves, siboglinid tubeworms and microbial mats. Macrofaunal community structure at the family level showed that density, diversity and composition patterns were primarily shaped by seep- and vent-common abiotic...
Tipo: Text
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00280/39076/37642.pdf

Cold-seep-like macrofaunal communities in organic- and sulfide-rich sediments of the Congo deep-sea fan
Provedor de dados: 5
Autores: Olu, Karine; Decker, Carole; Pastor, Lucie; Caprais, Jean-claude; Khripounoff, Alexis; Morineaux, Marie; Ain Baziz, M.; Menot, Lenaick; Rabouille, C.
Methane-rich fluids arising from organic matter diagenesis in deep sediment layers sustain chemosynthesis-based ecosystems along continental margins. This type of cold seep develops on pockmarks along the Congo margin, where fluids migrate from deep-buried paleo-channels of the Congo River, acting as reservoirs. Similar ecosystems based on shallow methane production occur in the terminal lobes of the present-day Congo deep-sea fan, which is supplied by huge quantities of primarily terrestrial material carried by turbiditic currents along the 800 km channel, and deposited at depths of up to nearly 5000 m. In this paper, we explore the effect of this carbon enrichment of deep-sea sediments on benthic macrofauna, along the prograding lobes fed by the current...
Tipo: Text
Palavras-chave: Chemosynthesis-based ecosystems; Cold seeps; Organic rich sediments; Macrofaunal communities.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00384/49561/50053.pdf

Spatial organization of a sedimentary macrobenthic community located on the West African Equatorial margin
Provedor de dados: 5
Autores: Brind'Amour, Anik; Menot, Lenaick; Galeron, Joelle; Crassous, Philippe.
Multiscale variability of a macrobenthic community inhabiting fine sediments on the West African Equatorial margin was assessed during three cruises as part of the BIOZAIRE research program. Spatial scales ranged from 15 to 550 m (within station) and from 1000 to 7000 m (between stations). Principal Coordinates of Neighbour Matrices (PCNM) allowed the detection of multiscale patterns of variability within a location, while a binary coding of the sampling stations was used at broad spatial scales. Significant patterns were observed at 170 and &gt;4000 m. The two spatial scales displayed similar biotic responses, with the Scaphopoda and Bivalvia having patterns that were opposite to the Pholoidae. A spatio-temporal patchwork of environmental variables might...
Tipo: Text
Palavras-chave: Spatial distribution; PCNM; Multiscale analyses; Macrobenthic communities; Habitat patches; BIOZAIRE.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6508.pdf

The Ecological Role of Patchy Cold-Water Coral Habitats: Does Coral Density Influence Local Biodiversity in Submarine Canyons of the Bay of Biscay?
Provedor de dados: 5
Autores: Menot, Lenaick; Van Den Beld, Inge; Arnaud-haond, Sophie; Bourillet, Jean-francois; Davies, J.s.; Guillaumont, Brigitte; Olu, Karine.
In the Bay of Biscay, Cold Water Coral (CWC) habitats have been mapped in 24 out of a hundred known submarine canyons. The footprint of ROV or towed-camera transects is small compared to the size of these canyons but still, known CWC habitats totalize a linear of 46 km. The distribution of these habitats, dominated by reef-building scleractinians, antipatharians, alcyonaceans and pennatulids, is however patchy and their median size is small, ranging from 6 to 65 m. While the preservation of these Vulnerable Marine Ecosystems has become essential, all CWC habitats will not be benefit from conservation strategies due to their widespread and patchy distribution. Priorities must thus be defined. Among the criteria for such prioritization, we explore here the...
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00469/58077/60484.pdf

Référentiel Habitats Benthiques. Contribution à la mise à jour d’EUNIS. Région Atlantique
Provedor de dados: 5
Autores: Bajjouk, Touria; Tourolle, Julie; Menot, Lenaick.
A l’échelle de l’Europe, la typologie EUNIS tend à s’étendre pour prendre en compte progressivement l’ensemble des habitats européens avec une grande finesse de définition. Conçue initialement à partir des données et de l’expérience britannique, cette typologie est parfois incomplète, notamment pour certaines zones biogéographiques comme la zone atlantique qui s’étend des côtes françaises jusqu’au Portugal. Le présent document est une synthèse de l’ensemble des fiches descriptives élaborées jusqu’à present, sur la base d’observations et des données collectées lors des campagnes Ifremer. L’objectif est  de favoriser, dans le processus de mise à jour d’EUNIS, la prise en compte des habitats manquants ou decrits de manière incomplète au regard des...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00605/71717/70180.pdf

Threatened by mining, polymetallic nodules are required to preserve abyssal epifauna
Provedor de dados: 5
Autores: Vanreusel, Ann; Hilario, Ana; Ribeiro, Pedro A.; Menot, Lenaick; Arbizu, Pedro Martinez.
Polymetallic nodule mining at abyssal depths in the Clarion Clipperton Fracture Zone (Eastern Central Pacific) will impact one of the most remote and least known environments on Earth. Since vast areas are being targeted by concession holders for future mining, large-scale effects of these activities are expected. Hence, insight into the fauna associated with nodules is crucial to support effective environmental management. In this study video surveys were used to compare the epifauna from sites with contrasting nodule coverage in four license areas. Results showed that epifaunal densities are more than two times higher at dense nodule coverage (&gt;25 versus ≤10 individuals per 100 m2), and that taxa such as alcyonacean and antipatharian corals are...
Tipo: Text
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00340/45166/44560.pdf

Alpha and beta diversity patterns of polychaete assemblages across the nodule province of the eastern Clarion-Clipperton Fracture Zone (equatorial Pacific)
Provedor de dados: 5
Autores: Bonifácio, Paulo; Martinez-arbizu, Pedro; Menot, Lenaick.
In the abyssal Equatorial Pacific Ocean, most of the seafloor of the Clarion-Clipperton Fracture Zone (CCFZ), a 6 million km2 polymetallic nodule province, has been preempted for future mining. In light of the large footprint that mining would leave, and given the diversity and the vulnerability of the abyssal fauna, the International Seabed Authority has implemented a regional management plan that includes the creation of nine areas of particular environmental interest (APEIs) located at the periphery of the CCFZ. The APEIs were defined based on the best – albeit very limited – scientific knowledge for the area. The fauna and habitats in the APEIs are unknown, as are species' ranges and the extent of biodiversity across the CCFZ. As part of the Joint...
Tipo: Text
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00509/62055/66217.pdf

Two “pillars” of cold-water coral reefs along Atlantic European margins: Prevalent association of Madrepora oculata with Lophelia pertusa, from reef to colony scale
Provedor de dados: 5
Autores: Arnaud-haond, Sophie; Van Den Beld, Inge; Becheler, Ronan; Orejas, C.; Menot, Lenaick; Frank, N.; Grehan, A.; Bourillet, Jean-francois.
The scleractinian coral Lophelia pertusa has been the focus of deep-sea research since the recognition of the vast extent of coral reefs in North Atlantic waters two decades ago, long after their existence was mentioned by fishermen. These reefs where shown to provide habitat, concentrate biomass and act as feeding or nursery grounds for many species, including those targeted by commercial fisheries. Thus, the attention given to this cold-water coral (CWC) species from researchers and the wider public has increased. Consequently, new research programs triggered research to determine the full extent of the corals geographic distribution and ecological dynamics of “Lophelia reefs”. The present study is based on a systematic standardised sampling design to...
Tipo: Text
Palavras-chave: Lophelia pertusa; Madrepora oculata; False-chimaera colonies; Cold water corals (CWC); Bay of Biscay; Ireland; Iceland.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00274/38530/37048.pdf

A reverse taxonomic approach to assess macrofaunal distribution patterns in abyssal Pacific polymetallic nodule fields
Provedor de dados: 5
Autores: Janssen, Annika; Kaiser, Stefanie; Meissner, Karin; Brenke, Nils; Menot, Lenaick; Martinez Arbizu, Pedro.
Heightened interest in the exploitation of deep seafloor minerals is raising questions on the consequences for the resident fauna. Assessing species ranges and determination of processes underlying current species distributions are prerequisites to conservation planning and predicting faunal responses to changing environmental conditions. The abyssal central Pacific nodule belt, located between the Clarion and Clipperton Fracture Zones (CCZ), is an area prospected for mining of polymetallic nodules. We examined variations in genetic diversity and broad-scale connectivity of isopods and polychaetes across the CCZ. Faunal assemblages were studied from two mining claims (the eastern German and French license areas) located 1300 km apart and influenced by...
Tipo: Text
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00255/36595/35158.pdf

Cold-water coral habitats in submarine canyons of the Bay of Biscay
Provedor de dados: 5
Autores: Van Den Beld, Inge; Bourillet, Jean-francois; Arnaud-haond, Sophie; De Chambure, Laurent; Davies, Jaime S; Guillaumont, Brigitte; Olu, Karine; Menot, Lenaick.
The topographical and hydrological complexity of submarine canyons, coupled with high substratum heterogeneity, make them ideal environments for cold-water coral (CWC) habitats. These habitats, including reefs, are thought to provide important functions for many organisms. The canyons incising the continental slope of the Bay of Biscay have distinct morphological differences from the north to the south. CWCs have been reported from this basin in the late 19th century; however, little is known about their present-day distribution, diversity and environmental drivers in the canyons. In this study, the characteristics and distribution of CWC habitats in the submarine canyons of the Bay of Biscay are investigated. Twenty-four canyons and three locations...
Tipo: Text
Palavras-chave: Cold-water corals; Habitats; Submarine canyons; Bay of Biscay; NE Atlantic; ROV; Towed camera; Distribution.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00382/49343/49733.pdf

Assessing the environmental status of selected North Atlantic deep-sea ecosystems
Provedor de dados: 5
Autores: Kazanidis, Georgios; Orejas, Covadonga; Borja, Angel; Kenchington, Ellen; Henry, Lea-anne; Callery, Oisín; Carreiro-silva, Marina; Egilsdottir, Hronn; Giacomello, Eva; Grehan, Anthony; Menot, Lenaick; Morato, Telmo; Ragnarsson, Stefán Áki; Rueda, José Luis; Stirling, David; Stratmann, Tanja; Van Oevelen, Dick; Palialexis, Andreas; Johnson, David; Roberts, J Murray.
The deep sea is the largest biome on Earth but the least explored. Our knowledge of it comes from scattered sources spanning different spatial and temporal scales. Implementation of marine policies like the European Union’s Marine Strategy Framework Directive (MSFD) and support for Blue Growth in the deep sea are therefore hindered by lack of data. Integrated assessments of environmental status require tools to work with different and disaggregated datasets (e.g. density of deep-sea habitat-forming species, body-size distribution of commercial fishes, intensity of bottom trawling) across spatial and temporal scales. A feasibility study was conducted as part of the four-year ATLAS project to assess the effectiveness of the open-access Nested Environmental...
Tipo: Text
Palavras-chave: Deep-sea environmental status; Vulnerable Marine Ecosystems; Indicators; Baselines; Marine Strategy Framework Directive; NEAT.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00651/76276/77241.pdf

A Blueprint for an Inclusive, Global Deep-Sea Ocean Decade Field Program
Provedor de dados: 5
Autores: Howell, Kerry L.; Hilário, Ana; Allcock, A. Louise; Bailey, David M.; Baker, Maria; Clark, Malcolm R.; Colaço, Ana; Copley, Jon; Cordes, Erik E.; Danovaro, Roberto; Dissanayake, Awantha; Escobar, Elva; Esquete, Patricia; Gallagher, Austin J.; Gates, Andrew R.; Gaudron, Sylvie M.; German, Christopher R.; Gjerde, Kristina M.; Higgs, Nicholas D.; Le Bris, Nadine; Levin, Lisa A.; Manea, Elisabetta; Mcclain, Craig; Menot, Lenaick; Mestre, Nelia C.; Metaxas, Anna; Milligan, Rosanna J.; Muthumbi, Agnes W. N.; Narayanaswamy, Bhavani E.; Ramalho, Sofia P.; Ramirez-llodra, Eva; Robson, Laura M.; Rogers, Alex D.; Sellanes, Javier; Sigwart, Julia D.; Sink, Kerry; Snelgrove, Paul V. R.; Stefanoudis, Paris V.; Sumida, Paulo Y.; Taylor, Michelle L.; Thurber, Andrew R.; Vieira, Rui P.; Watanabe, Hiromi K.; Woodall, Lucy C.; Xavier, Joana R.
The ocean plays a crucial role in the functioning of the Earth System and in the provision of vital goods and services. The United Nations (UN) declared 2021–2030 as the UN Decade of Ocean Science for Sustainable Development. The Roadmap for the Ocean Decade aims to achieve six critical societal outcomes (SOs) by 2030, through the pursuit of four objectives (Os). It specifically recognizes the scarcity of biological data for deep-sea biomes, and challenges the global scientific community to conduct research to advance understanding of deep-sea ecosystems to inform sustainable management. In this paper, we map four key scientific questions identified by the academic community to the Ocean Decade SOs: (i) What is the diversity of life in the deep ocean? (ii)...
Tipo: Text
Palavras-chave: Deep sea; Blue economy; Ocean Decade; Biodivercity; Essential ocean variables.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00666/77768/79904.pdf

Colonization patterns along the equatorial West African margin: Implications for functioning and diversity maintenance of bathyal and abyssal communities
Provedor de dados: 5
Autores: Menot, Lenaick; Crassous, Philippe; Desbruyeres, Daniel; Galeron, Joelle; Khripounoff, Alexis; Sibuet, M.
In the framework of the deep-sea environmental programme BIOZAIRE (Ifremer-Total), colonization trays were deployed for 283-433 days at three sites along the equatorial West African margin: ZA at 1300-m depth, ZC at 4000-m depth far from the Congo canyon and ZD at 4000-m depth close to the Congo canyon. The experiments aimed at determining the influence of depth and local environmental settings on macrofaunal colonization patterns and organic carbon degradation rates. The trays were filled with glass beads and this artificial substrate was enriched with ground particulate organic matter in a gradient of 0%, 0.34%, 1.02% and 3.43% organic carbon. The highest rates of organic carbon degradation ranged, according to the duration of the experiments, from 1.59...
Tipo: Text
Palavras-chave: Diversity; Organic enrichment; Macrofauna; Deep sea; Colonization; Biozaire.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-7323.pdf

A framework for the development of a global standardised marine taxon reference image database (SMarTaR-ID) to support image-based analyses
Provedor de dados: 5
Autores: Howell, Kerry L.; Davies, Jaime S.; Allcock, A. Louise; Braga-henriques, Andreia; Buhl-mortensen, Pål; Carreiro-silva, Marina; Dominguez-carrió, Carlos; Durden, Jennifer M.; Foster, Nicola L.; Game, Chloe A.; Hitchin, Becky; Horton, Tammy; Hosking, Brett; Jones, Daniel Ob; Mah, Christopher; Laguionie Marchais, Claire; Menot, Lenaick; Morato, Telmo; Pearman, Tabitha R. R.; Piechaud, Nils; Ross, Rebecca E.; Ruhl, Henry A.; Saeedi, Hanieh; Stefanoudis, Paris V.; Taranto, Gerald H.; Thompson, Michael B.; Taylor, James R.; Tyler, Paul; Vad, Johanne; Victorero, Lissette; Vieira, Rui P.; Woodall, Lucy C.; Xavier, Joana R.; Wagner, Daniel.
Video and image data are regularly used in the field of benthic ecology to document biodiversity. However, their use is subject to a number of challenges, principally the identification of taxa within the images without associated physical specimens. The challenge of applying traditional taxonomic keys to the identification of fauna from images has led to the development of personal, group, or institution level reference image catalogues of operational taxonomic units (OTUs) or morphospecies. Lack of standardisation among these reference catalogues has led to problems with observer bias and the inability to combine datasets across studies. In addition, lack of a common reference standard is stifling efforts in the application of artificial intelligence to...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00602/71408/69862.pdf

North Atlantic Basin-Scale Multi-Criteria Assessment Database to Inform Effective Management and Protection of Vulnerable Marine Ecosystems
Provedor de dados: 5
Autores: Morato, Telmo; Pham, Christopher K.; Fauconnet, Laurence; Taranto, Gerald H.; Chimienti, Giovanni; Cordes, Erik; Dominguez-carrio, Carlos; Munoz, Pablo Duran; Egilsdottir, Hronn; Gonzalez-irusta, Jose-manuel; Grehan, Anthony; Hebbeln, Dierk; Henry, Lea-anne; Kazanidis, Georgios; Kenchington, Ellen; Menot, Lenaick; Molodtsova, Tina N.; Orejas, Covadonga; Ramiro-sanchez, Berta; Ramos, Manuela; Roberts, J. Murray; Rodrigues, Luis; Ross, Steve W.; Rueda, Jose L.; Sacau, Mar; Stirling, David; Carreiro-silva, Marina.
Tipo: Text
Palavras-chave: Deep-sea; Deep-sea fisheries; Marine protected areas; Area-based management tools; Sponges; Cold-water corals; Vulnerable marine ecosystems; Ecologically or biologically significant marine areas.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00689/80109/83167.pdf

Spatial and temporal patterns of benthic macrofaunal communities on the deep continental margin in the Gulf of Guinea
Provedor de dados: 5
Autores: Galeron, Joelle; Menot, Lenaick; Renaud, Nolwenn; Crassous, Philippe; Khripounoff, Alexis; Treignier, C.; Sibuet, M.
Density, taxonomic composition at higher taxon level and vertical distribution of benthic macrofaunal communities and sediment characteristics (pore water, nitrogen, organic carbon, sulfur, C/N ratio, n-alcohol biomarkers) were examined at three deep sites on the Congo-Gabon continental margin. This study was part of the multidisciplinary BIOZAIRE project that aimed at studying the deep benthic ecosystems in the Gulf of Guinea. Sampling of macrofaunal communities and of sediment was conducted during three cruises (January 2001, December 2001 and December 2003) at two downslope sites (4000 m depth), one located near the Congo submarine channel (15 km in the south) and the other one far from the channel (150km in the South). The third area located 8 km north...
Tipo: Text
Palavras-chave: Deep sea; Distribution; Community structure; Macrofauna; Congo canyon; Congo Angola margin; Equatorial west Africa margin; Atlantic.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-7315.pdf

Apports de l’imagerie pour la cartographie et le suivi des habitats profonds
Provedor de dados: 5
Autores: Tourolle, Julie; Borremans, Catherine; Olu, Karine; Menot, Lenaick; Matabos, Marjolaine.
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00472/58324/60875.pdf