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A new species of hesionid worm, Hesiocaeca methanicola sp nov (Polychaeta : Hesionidae), living in ice-like methane hydrates in the deep Gulf of Mexico ArchiMer
Desbruyeres, Daniel; Toulmond, André.
On July 14, 1997, in the Gulf of Mexico, a dense population of polychaete worms dwelling in methane hydrates associated with cold seeps was discovered and sampled at 538 meters depth. The worms belong to the family Hesionidae and represent a new species of the genus Hesiocaeca. They differ from the two previously described species by the shape of the prostomium, the shape of the setae and the presence of anal cirri.
Tipo: Text Palavras-chave: Annelida; Polychaeta; Hesionidae; Deep-sea; Methane hydrates; Gulf of Mexico.
Ano: 1998 URL: https://archimer.ifremer.fr/doc/00447/55811/62261.pdf
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A new species of scale-worm (Polychaeta : Polynoidae), Lepidonotopodium atalantae sp nov., from the East Pacific Rise at 13 degrees N and 9 degrees 50'N ArchiMer
Desbruyeres, Daniel; Hourdez, Stéphane.
A new species of scale-worm, Lepidonotopodium atalantae, belonging to the sub-family Lepidonotopodinae (Polychaeta: Polynoidae) has been found in samples collected on the deep-sea hydrothermal vent sites of 9 degrees N and 13 degrees N on the East Pacific Rise. It is mainly characterized by elytra, regularly ornamented on their posterior border, and very long anal cirri. This is the fifth species of Lepidonotopodium, all belonging to the deep-sea hydrothermal vent fauna.
Tipo: Text Palavras-chave: East Pacific Rise; Hydrothermal vent; Deep sea; Polynoidae; Polychaeta; Annelida.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/publication-891.pdf
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A new species of scale-worm (Polychaeta : Polynoidae), Lepidonotopodium jouinae sp nov., from the Azores Triple Junction on the Mid-Atlantic Ridge ArchiMer
Desbruyeres, Daniel; Hourdez, Stéphane.
A new species of scale-worm, Lepidonotopodium jouinae, belonging to the sub-family Lepidonotopodinae (Polychaeta: Polynoidae) has been found in samples collected on deep-sea hydrothermal vent fields at the Azores Triple Junction on the Mid-Atlantic Ridge. It is the first species of Polynoidae described from the Mid-Atlantic Ridge hydrothermal vents. Other species of the same genus have been described from hydrothermal vents of the Pacific Ocean.
Tipo: Text Palavras-chave: Mid Atlantic Ridge; Hydrothermal vent; Deep sea; Polynoidae; Polychaeta; Annelida.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/publication-892.pdf
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A new species of scale-worm (Polychaeta : Polynoidae), Levensteiniella iris sp nov., from the Rainbow and Lucky Strike vent fields (Mid-Atlantic Ridge) ArchiMer
Hourdez, Stéphane; Desbruyeres, Daniel.
A new species of scale-worm belonging to the sub-family Macellicephalinae, Levensteiniella iris sp. nov., is described. It was collected on the Mid-Atlantic Ridge, on the Lucky Strike and Rainbow vent sites, associated to the mussel Bathymodiolus azoricus on very low flow hydrothermal vents.
Tipo: Text Palavras-chave: New species; Macellicephalinae; Polychaeta; Mid Atlantic ridge; Hydrothermal vents.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/publication-890.pdf
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Alvinella pompejana gen. sp. nov., Ampharetidae aberrant des sources hydrothermales de la ride Est-Pacifique ArchiMer
Desbruyeres, Daniel; Laubier, Lucien.
Several unknown animal forms have recently been collected in the immediate vicinity of hot hydrothermal vents in the Eastern Pacific Ocean, forming a flourishing community of organisms. A tubicolous polychaete builds parchment like tubes around some of the hydrothermal vents. The tubes are covered with particles of metallic sulfur. This annelid is a new species, and is called Alvinella pompejana, new genus and species. The new sub-family Alvinellinae, erected to contain this new species, can be included in the family Ampharetidae (order Terebellida), in spite of several aberrant features. In addition to its morphological and taxonomic peculiarities. Alvinella pompejana also exhibits some remarkable biological features, in particular the existence of two...
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Ano: 1980 URL: http://archimer.ifremer.fr/doc/00324/43525/43064.pdf
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Alvinella pompejana gen. sp. nov., Ampharetidae aberrant des sources hydrothermales de la ride Est-Pacifique ArchiMer
Desbruyeres, Daniel; Laubier, Lucien.
Several unknown animal forms have recently been collected in the immediate vicinity of hot hydrothermal vents in the Eastern Pacific Ocean, forming a flourishing community of organisms. A tubicolous polychaete builds parchment like tubes around some of the hydrothermal vents. The tubes are covered with particles of metallic sulfur. This annelid is a new species, and is called Alvinella pompejana, new genus and species. The new sub-family Alvinellinae, erected to contain this new species, can be included in the family Ampharetidae (order Terebellida), in spite of several aberrant features. In addition to its morphological and taxonomic peculiarities. Alvinella pompejana also exhibits some remarkable biological features, in particular the existence of two...
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Ano: 1980 URL: http://archimer.ifremer.fr/doc/1980/publication-5411.pdf
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Are spatial variations in the diets of hydrothermal fauna linked to local environmental conditions? ArchiMer
De Busserolles, F.; Sarrazin, Jozee; Gauthier, Olivier; Gelinas, Y.; Fabri, Marie-claire; Sarradin, Pierre-marie; Desbruyeres, Daniel.
Trophic relationships in Bathymodiolus azoricus mussel bed communities on the Tour Eiffel hydrothermal edifice (Lucky Strike) were assessed using delta C-13 and delta N-15 signatures from 14 hydrothermal species. The nutritional basis of B. azoricus was also investigated with delta S-34. Faunal samples and environmental data (temperature, pH, total dissolved sulfide, iron and copper concentrations) were collected from 12 different locations on the edifice. Chemical conditions varied between microhabitats, and were all correlated to temperature. Carbon and nitrogen isotopic results revealed the presence of two, apparently independent, trophic groups. The first was composed of symbiont-bearing fauna (B. azoricus and their associated polychaetes...
Tipo: Text Palavras-chave: Lucky Strike (37 degrees 17.29 ' N 32 degrees 16.45 ' W); Mid Atlantic Ridge; Food webs; Hydrothermal springs; Environmental conditions; Stable isotopes.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-7312.pdf
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Bacterial communities associated with "Pompei worms" from the East Pacific rise hydrothermal vents: SEM, TEM observations ArchiMer
Gaill, F; Desbruyeres, Daniel; Prieur, D.
A morphological study of bacteria associated with the “Pompei worm,”Alvinella pompejana, collected from East Pacific rise hydrothermal vents, revealed four types of epidermal associations on the dorsal part of the animals: various single cells distributed on the animal tegument; clump-like associations located in the intertegumentary spaces; and filamentous bacteria associated with epidermal expansions, or inserted on the posterior parapodia. The bacterial morphologies were illustrated by SEM and TEM pictures and compared to bacteria previously described. The functional significance of these associations is discussed.
Tipo: Text
Ano: 1987 URL: http://archimer.ifremer.fr/doc/00155/26658/24855.pdf
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Biogeographic relationships among deep-sea hydrothermal vent faunas at global scale ArchiMer
Bachraty, Charleyne; Legendre, P.; Desbruyeres, Daniel.
The discovery of deep-sea hydrothermal vent fauna, kilometres deep in the oceans, is a great achievement of 20th-century marine biology. The deep-sea hydrothermal food web does not directly depend on the sun's energy. Vent communities rely primarily on trophic associations between chemoautotrophic bacteria and consumers A small. number of endemic taxa are adapted to the inhospitable vent environments that are distributed along ridge crests. Where these vent communities originated and how they dispersed are among the important questions ecologists must answer. Here, by statistical analysis of the most comprehensive database ever assembled about deep-sea hydrothermal fauna, we delineate six major hydrothermal provinces in the world ocean and identify seven...
Tipo: Text Palavras-chave: Multivariate regression tree; Minimum spanning tree; Deep sea hydrothermal vent communities; Coefficients of dispersal direction; Centre of dispersal; Biogeographic provinces.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6936.pdf
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Biogeography and Potential Exchanges Among the Atlantic Equatorial Belt Cold-Seep Faunas ArchiMer
Olu, Karine; Cordes, Erik E.; Fisher, Charles R.; Brooks, James M.; Sibuet, Myriam; Desbruyeres, Daniel.
Like hydrothermal vents along oceanic ridges, cold seeps are patchy and isolated ecosystems along continental margins, extending from bathyal to abyssal depths. The Atlantic Equatorial Belt (AEB), from the Gulf of Mexico to the Gulf of Guinea, was one focus of the Census of Marine Life ChEss (Chemosynthetic Ecosystems) program to study biogeography of seep and vent fauna. We present a review and analysis of collections from five seep regions along the AEB: the Gulf of Mexico where extensive faunal sampling has been conducted from 400 to 3300m, the Barbados accretionary prism, the Blake ridge diapir, and in the Eastern Atlantic from the Congo and Gabon margins and the recently explored Nigeria margin. Of the 72 taxa identified at the species level, a total...
Tipo: Text Palavras-chave: Gulf of mexico; Barbados accretionary prism; Mussel bathymodiolus childressi; Hydrothermal vent communities; Deep sea vent; Spatial distribution; Family veiscomyidae; Dispersal barriers; Hydrocarbon seeps; Species diversity.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00011/12207/8975.pdf
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Biogeography Revisited with Network Theory: Retracing the History of Hydrothermal Vent Communities ArchiMer
Moalic, Yann; Desbruyeres, Daniel; Duarte, Carlos M.; Rozenfeld, Alejandro F.; Bachraty, Charleyne; Arnaud-haond, Sophie.
Defining biogeographic provinces to understand the history and evolution of communities associated with a given kind of ecosystem is challenging and usually requires a priori assumptions to be made. We applied network theory, a holistic and exploratory method, to the most complete database of faunal distribution available on oceanic hydrothermal vents, environments which support fragmented and unstable ecosystems, to infer the processes driving their worldwide biogeography. Besides the identification of robust provinces, the network topology allowed us to identify preferential pathways that had hitherto been overlooked. These pathways are consistent with the previously proposed hypothesis of a role of plate tectonics in the biogeographical history of...
Tipo: Text Palavras-chave: Biogeography; Deep sea ecology; Hydrothermal vents; Network analysis; Systems biology.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00063/17400/15164.pdf
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Chemical and thermal description of the environment of the Genesis hydrothermal vent community (13 degrees N, EPR) ArchiMer
Sarradin, Pierre-marie; Caprais, Jean-claude; Briand, Patrick; Gaill, Françoise; Shillito, Bruce; Desbruyeres, Daniel.
The objective of this study is to describe the chemical and physical environment surrounding the vent organisms at the Genesis site (EPR, 2640 m). The main chimney is colonized by Riftia pachyptila, fishes Zoarcidae and crabs Bythograeidae. The top of the smoker is covered with tubes of polychaetes Alvinellidae, the frontier zone by limpet gastropods. Temperature measurements and water sampling were made on an axis along the chimney. The environment was characterized using relationships between chemical concentrations and temperature to provide a chemo-thermal model of the site. Discrete temperature ranges were 1-1.6 degrees C in sea water, 1.6-10 degrees C among Riftia plumes (up to 25 degrees C at the tube base), 7-91 degrees C close to the alvinellid...
Tipo: Text Palavras-chave: Hydrothermal ecosystem; Hydrogen sulphide; Carbon dioxide; Temperature.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00186/29764/28200.pdf
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Colonization patterns along the equatorial West African margin: Implications for functioning and diversity maintenance of bathyal and abyssal communities ArchiMer
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
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Community dynamics over a decadal scale at Logatchev, 14 degrees 45 ' N, Mid-Atlantic Ridge ArchiMer
Gebruk, Andrey; Fabri, Marie-claire; Briand, Patrick; Desbruyeres, Daniel.
Hydrothermal vent community dynamics over a ten year span was studied in the Logatchev area, 14 degrees 45'N on the Mid-Atlantic Ridge. On the SERPENTINE cruise in March 2007 with the RN Pourquoi pas? and the ROV Victor 6000 (IFREMER), composition, abundance and distribution of dominant megafauna at Logatchev were examined and compared to published data from 1997. Our results revealed notable changes in several community characteristics. The most significant changes evident in March 2007 compared to July 1997 were the increase up to by order of magnitude in the population density of predatory gastropods Phymorchynchus spp. at the site Irina-2 and disappearance of a live population of vesicomyids at the site Anya's Garden. Other notable differences between...
Tipo: Text Palavras-chave: Hydrothermal vent; Community dynamics; Succession; Phymorchynchus; Bathymodiolus puteoserpentis; Vesicomyids; Logatchev; Mid-Atlantic Ridge.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00019/13044/10156.pdf
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Community structure and temperature dynamics within a mussel assemblage on the Southern East Pacific Rise ArchiMer
Sarrazin, Jozee; Walter, Cecile; Sarradin, Pierre-marie; Brind'Amour, Anik; Desbruyeres, Daniel; Briand, Patrick; Fabri, Marie-claire; Van Gaever, S; Vanreusel, A; Bachraty, Charleyne; Thiebaut, E.
The composition, biomass and diversity of the fauna in a Bathymodiolus thermophilus mussel assemblage colonizing diffuse flow areas on the SEPR is described and compared with biological characteristics of other hydrothermal assemblages. The spatio-temporal dynamics of temperatures over fine scales within the mussel habitat are characterized using newly-developed statistical approaches. Temperature data obtained from two adjacent habitats (a cirriped assemblage and a bare substratum) are compared. The results of the temperature data show that the mean temperature and the temperature variations were significantly higher in the mussel assemblage (mean temperature: 4.12 +/- 1.85 degrees C) in comparison with 2.40 +/- 0.14 degrees C in the cirriped assemblage...
Tipo: Text Palavras-chave: East Pacific Rise; Temperature dynamics; Biomass; Diversity; Bathymodiolus thermophilus; Mussel assemblage; Hydrothermal vents.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-3570.pdf
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delta C-13 signature of hydrothermal mussels is related with the end-member fluid concentrations of H2S and CH4 at the Mid-Atlantic Ridge hydrothermal vent fields ArchiMer
Colaco, Ana; Dehairs, F; Desbruyeres, Daniel; Le Bris, Nadine; Sarradin, Pierre-marie.
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Ano: 2002 URL: http://archimer.ifremer.fr/doc/00000/10027/7494.pdf
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Distribution and spatial variation of hydrothermal faunal assemblages at Lucky Strike (Mid-Atlantic Ridge) revealed by high-resolution video image analysis ArchiMer
Cuvelier, Daphne; Sarrazin, Jozee; Colaco, Ana; Copley, Jon; Desbruyeres, Daniel; Glover, Adrian G.; Tyler, Paul; Santos, Ricardo Serrao.
Whilst the fauna inhabiting hydrothermal vent structures in the Atlantic Ocean is reasonably well known, less is understood about the spatial distributions of the fauna in relation to abiotic and biotic factors. In this study, a major active hydrothermal edifice (Eiffel Tower, at 1690 m depth) on the Lucky Strike vent field (Mid-Atlantic Ridge (MAR)) was investigated. Video transects were carried out by ROV Victor 6000 and complete image coverage was acquired. Four distinct assemblages, ranging from dense larger-sized Bathymodiolus mussel beds to smaller-sized mussel clumps and alvinocaridid shrimps, and two types of substrata were defined based on high definition photographs and video imagery. To evaluate spatial variation, faunal distribution was mapped...
Tipo: Text Palavras-chave: Vent ecology; Mid Atlantic Ridge; Hydrothermal vent; Lucky Strike; Video analysis; Faunal assemblages; Spatial distribution; Community structure.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-7328.pdf
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Ecology of the Menez Gwen hydrothermal vent field (Mid-Atlantic Ridge Azores Triple Junction) ArchiMer
Colaco, Ana; Desbruyeres, Daniel; Comtet, Thierry; Alayse, Anne-marie.
Tipo: Text
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00178/28967/27388.pdf
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Emergence of biodiversity research and main progress from Ifremer ArchiMer
Desbruyeres, Daniel; Goulletquer, Philippe.
Research needs and interests on biodiversity have drastically increased since the Rio Conference (1992). The main conclusions from the Millennium Ecosystem Assessment (MEA, 2001) carried out by the UN and the demonstration of the critical role of biodiversity in maintaining ecosystems services have strengthened research interests on biodiversity. Moreover, the systemic approach generalization, complex system modeling, confluence of thematic prompting new scientific concepts, and multi-scalar – multifunctional approach have induced significant changes to the scientific context. A review of major advances on biodiversity monitoring and research resulting from Ifremer programs will be presented considering deep sea as well as coastal ecosystems and associated...
Tipo: Text Palavras-chave: Modelisation; Operational monitoring; Benthic habitat mapping; Ecosystem; Research; Marine biodiversity; Modélisation; Surveillance opérationnelle; Cartographie; Ecosystèmes; Recherche; Biodiversité marine.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/acte-6829.pdf
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Estimation de la biomasse des peuplements associes aux sources hydrothermales profondes de la dorsale du Pacifique oriental a 13 degree N ArchiMer
Fustec, A; Desbruyeres, Daniel; Laubier, Lucien.
Authors used photogrammetric and videogrammetric data collected at 13 degree N/EPR by the French manned submersible Cyana during the Biocyatherm and Biocyarise cruises to estimate the biomass of vent fauna. Two distinct faunal assemblages are associated with low- and high-temperature vents, Vestimentifera. The former, characterized by giant tube worms and bivalves, the latter by the so-called "Pompeii worms" (Alvinellidae). The cold vent biomass may reach 8.5 kg m super(2), far in excess of the hot vent biomass which amounts to 2.4 kg. Such a difference is linked to higher integrated symbiosis between primary and secondary producers in cold vent assemblages, hot vent secondary production being dependent upon separate ingestion/digestion processes.
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Ano: 1988 URL: http://archimer.ifremer.fr/doc/00267/37823/35904.pdf
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