|
|
|
| Registros recuperados: 39 | |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
| Registros recuperados: 39 | |
|
|
|
