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| Registros recuperados: 22 | |
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| Nezlin, Nikolay P.; Dever, Mathieu; Halverson, Mark; Leconte, Jean-michel; Maze, Guillaume; Richards, Clark; Shkvorets, Igor; Zhang, Rui; Johnson, Greg. |
| This study demonstrates the long-term stability of salinity measurements from Argo floats equipped with inductive conductivity cells, which have extended float lifetimes as compared to electrode-type cells. New Argo float sensor payloads must meet the demands of the Argo governance committees before they are implemented globally. Currently, the use of CTDs with inductive cells designed and manufactured by RBR Ltd., has been approved as a Global Argo Pilot. One requirement for new sensors is to demonstrate stable measurements over the lifetime of a float. To demonstrate this, data from four Argo floats in the western Pacific Ocean equipped with the RBRargo CTD sensor package are analyzed using the same Owens-Wong-Cabanes (OWC) method and reference datasets... |
| Tipo: Text |
Palavras-chave: Pacific Ocean; Salinity; Instrumentation/sensors; Profilers; Oceanic; Quality assurance/control. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00654/76568/77698.pdf |
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| Letourneur, Y; Labrosse, Pierre; Kulbicki, M. |
| A comparative study was conducted in two zones of the Northern Province of New Caledonia, one located windward (east coast) and the other located leeward (west coast). In each zone, three major sectors were investigated: fringing reefs close to areas of important mining activities, fringing reefs close to areas of moderate mining activities, and fringing reefs close to areas free of mining activities. In addition, on the west coast, fringing reefs close to areas of high natural ground erosion were also studied. Only commercial fish species sensus late were censused on a total of 163 stations, concerning 165 fish species. Substrate characteristics were not different between zones and sectors. However, significant differences were observed for living... |
| Tipo: Text |
Palavras-chave: Ichtyofaune; Récif corallien; Activité minière; Apport terrigène; Océan Pacifique; Ichthyofauna; Fringing reefs; Mining activities; Terrigeneous runoff; Pacific Ocean. |
| Ano: 1999 |
URL: https://archimer.ifremer.fr/doc/00325/43586/44026.pdf |
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| Goulletquer, Philippe; Wolowicz, Maciej; Latala, Adam; Geairon, Philippe; Huvet, Arnaud; Boudry, Pierre. |
| Respiration rates of various geographical strains of Crassostrea gigas were compared to assess the respiratory expenditure as a physiological indicator of catabolism (cost of maintenance). Parental oysters, sampled in France (Marennes-Oleron), Japan (Hiroshima), Taiwan (Tunkang) and Spain (Cadix), were differentiated by both their geographic origin and by mitochondrial DNA markers, allowing the distinction between the two closely related taxa Crassostrea gigas and Crassostrea angulata. After reproduction of these parental oysters, respiration rates of spat of each strain, reared under common controlled conditions, were individually estimated at 20 degrees C by using a volumetric microrespirometer. Our results demonstrated that physiological variability... |
| Tipo: Text |
Palavras-chave: Pacific Ocean; NE Atlantic; Oyster strains; Hybrids; Crassostrea angulata; Crassostrea gigas; Metabolism; Respiration rates; Océan Pacifique; Atlantique NE; Souches génétiques; Hybrides; Crassostrea angulata; Crassostrea gigas; Métabolisme; Taux de respiration. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/publication-859.pdf |
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| Gueguen, Bleuenn; Rouxel, Olivier; Rouget, Marie-laure; Bollinger, Claire; Ponzevera, Emmanuel; Germain, Yoan; Fouquet, Yves. |
| Ferromanganese (Fe-Mn) crusts are potential archive of the Ni isotope composition of seawater through time. In this study we aim at (1) understanding Ni isotope fractionation mechanisms and metal enrichment processes in Fe-Mn deposits, (2) addressing global vs. local control of Ni isotope composition of these deposits. Two Fe-Mn crusts from the North Pacific Ocean (Apuupuu Seamount, Hawaii) and two Fe-Mn crusts from the South Pacific Ocean (near Rurutu Island, Austral archipelago of French Polynesia) were characterized for their elemental geochemistry and Ni isotope composition. Geochemical analyses were performed at millimeter intervals in order to provide time-resolved record of Ni isotopes. Chronology and growth rates were determined using cosmogenic... |
| Tipo: Text |
Palavras-chave: Ferromanganese crusts; Nickel isotopes; Paleoceanography; Pacific Ocean; Biogeochemical cycling. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00341/45255/44696.pdf |
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| Ahyong, Shane T.. |
| The deep-sea squat lobster, Munidopsis serricornis (Loven, 1852), originally described from the north-eastern Atlantic, has long been considered near cosmopolitan with numerous reports also from the western Pacific and northern Indian Ocean. These Indo-West Pacific records are reviewed along with new material from seamounts throughout the region. Munidopsis serricornis sensu stricto is restricted to the Atlantic Ocean. Six new species are described from the Indo-West Pacific: M alcocki sp. nov. from the central to western Indian Ocean; M atlantis sp. nov., from the Southwest Indian Ridge; M macphersoni sp. nov. from the Austral Islands, French Polynesia; M spiridonovi sp. nov. from the western Indian Ocean; M nias sp. nov. from southern Indonesia and the... |
| Tipo: Text |
Palavras-chave: Anomura; Taxonomy; Subantarctic; Pacific Ocean; Indian Ocean; Seamounts. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00495/60620/64102.pdf |
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| Moore, Bradley R.; Adams, Tim; Allain, Valerie; Bell, Johann D.; Bigler, Mark; Bromhead, Don; Clark, Sangaa; Davies, Campbell; Evans, Karen; Faasili, Ueta; Farley, Jessica; Fitchett, Mark; Grewe, Peter M.; Hampton, John; Hyde, John; Leroy, Bruno; Lewis, Antony; Lorrain, Anne; Macdonald, Jed I.; Marie, Amandine D.; Minte-vera, Carolina; Natasha, Janice; Nicol, Simon; Obregon, Pablo; Peatman, Thomas; Pecoraro, Carlo; Phillip, N. Bradley; Pilling, Graham M.; Rico, Ciro; Sanchez, Caroline; Scott, Robert; Scutt Phillips, Joe; Stockwell, Brian; Tremblay-boyer, Laura; Usu, Thomas; Williams, Ashley J.; Smith, Niamh. |
| Delineating the stock structure of highly-mobile, wide-ranging fishes subject to exploitation is a challenging task, yet one that is fundamental to optimal fisheries management. A case in point are stocks of skipjack tuna (Katsuwonus pelamis), yellowfin tuna (Thunnus albacares), bigeye tuna (Thunnus obesus) and albacore tuna (Thunnus alalunga) in the Pacific Ocean, which support important commercial, artisanal, subsistence, and recreational fisheries, and contribute roughly 70 % of global commercial tuna catches. Although some spatial and temporal structuring is recognised within these stocks, growing evidence from a range of approaches suggests that the stock structure of each tuna species is more complex than is currently assumed in both stock assessment... |
| Tipo: Text |
Palavras-chave: Tuna; Pacific Ocean; Movement; Spatial dynamics; Stock structure; Fisheries management. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00630/74168/73773.pdf |
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| Chu, N; Johnson, C; Beard, B; German, C; Nesbitt, R; Frank, M; Bohn, Marcel; Kubik, P; Usui, A; Graham, I. |
| Temporal variations in Fe isotope compositions at three locations in the Pacific Ocean over the last 10 Ma are inferred from high-resolution analyses of three hydrogenetic ferromanganese crusts. Iron pathways to the central deep Pacific Ocean appear to have remained constant over the past 10 Ma, reflected by a remarkably constant Fe isotope composition, despite large changes in the Fe delivery rates to the surface ocean via dust. These results suggest that the Fe cycle in the deep ocean is decoupled from that in surface waters. By contrast, one ferromanganese crust from the Izu-Bonin (IB) back-arc/marginal basin of the W. Pacific exhibits large delta Fe-56 variations. In that crust, decreases in delta Fe-56 values correlate with increases in Mn, Mg, Ni,... |
| Tipo: Text |
Palavras-chave: Pacific Ocean; Izu Bonin; Hydrothen nal; Ferromanganese crusts; Fe isotopes. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-3700.pdf |
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| Melguen, Marthe. |
| A time when France, as well as Great Britain, had a very ambitious maritime policy, the La Pérouse expedition was the only maritime expedition conceived, designed and followed at a national level by the King himself, Louis XVI. The excellence of the Expedition's preparation and of its importance in terms of scientific results, the exceptional concern of La Pérouse in the fields of data gathering and transmission, his very high quality as captain of a global expedition, made it a remarkable achievement, despite its disastrous end. |
| Tipo: Text |
Palavras-chave: D'Entrecasteaux; Cook; La Pérouse; Age of Enlightenment; Voyages of exploration; Voyages of discovery; North western America; North east Asia; Oceania; Tasmania; Pacific Ocean. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/acte-358.pdf |
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| Le Moullac, Gilles; Soyez, Claude; Vidal-dupiol, Jeremie; Belliard, Corinne; Fievet, Julie; Sham-koua, Manaarii; Lo-yat, Alain; Saulnier, Denis; Gaertner-mazouni, N.; Gueguen, Yannick. |
| The possible consequences of acidification on pearl farming are disruption of oyster metabolism and change in growth. In the laboratory, we studied the impact of pCO2 (3540, 1338 and 541μatm) on the physiology of pearl oysters exposed for 100 days. This experiment was repeated after an interval of one year. Several physiological compartments were examined in pearl oysters: the scope for growth by measuring ingestion, assimilation and oxygen consumption, gametogenesis by means of histological observations, shell growth by measurement and observation by optical and electronic microscopy, and at molecular level by measuring the expression of nine genes of mantle cells implied in the biomineralisation process. Results from both experiments showed that high... |
| Tipo: Text |
Palavras-chave: Global change; Pearl oyster; Bioenergetic; Biomineralization; Pacific Ocean; French Polynesia. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00321/43189/42737.pdf |
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| Geistdoerfer, P. |
| Seven new fish species have been found so far on the Pacific and Atlantic hydrothermal vents: the synaphobranchid Thermobiotes mytilogeiton; the zoarcid Thermarces cerberus and Pachycara thermophilum; the bythitid Bythites hollisi; the cyclopterid Careproctus hyaleius; one zoarcid fish; and one ophidiid fish. The characteristics of the 70 specimens collected, and their location in French and American museums, are listed. The results and observations made on vent fishes and fishes living around the periphery of the vents observed during recent dives (especially along the East Pacific Rise between 17 and 19 degrees S, the North Fiji Basin Rise and the Mid Atlantic Rise) are summarized. Previous literature on vent fishes is reviewed. |
| Tipo: Text |
Palavras-chave: Hydrothermalism; Deepsea; Fishes; Atlantic Ocean; Pacific Ocean. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00096/20724/18361.pdf |
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| De Garidel-thoron, T; Beaufort, L; Linsley, Bk; Dannenmann, S. |
| The primary productivity dynamics of the last 200,000 years in the Sulu Sea was reconstructed using the abundance of the coccolithophore Florisphaera profunda in the IMAGES MD97-2141 core. We find that primary productivity was enhanced during glacial periods, which we suggest is due to a stronger East Asian winter monsoon. During the last 80 kyr, eight significant increases in primary productivity (PP) in the Sulu Sea are similar to East Asian winter monsoon changes recorded in Chinese loess. The PP maxima are not linked with Heinrich events (HE) in the North Atlantic, although four PP peaks are synchronous with HE. The PP oscillations have frequencies near those of the Dansgaard-Oeschger cycles in Northern Hemisphere ice records and indicate a... |
| Tipo: Text |
Palavras-chave: Micropaleontology; Pacific Ocean. |
| Ano: 2001 |
URL: https://archimer.ifremer.fr/doc/00221/33187/31809.pdf |
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| Delpech, Audrey; Cravatte, Sophie; Marin, Frederic; Morel, Yves; Gronchi, Enzo; Kestenare, Elodie. |
| The mid-depth ocean circulation in the tropical Pacific is dominated by sets of alternating eastward and westward jets. The origin and transport properties of these flow features remain in many ways an open question, all the more crucial since their usual underestimation in ocean global circulation model has been identified as a potential bias for the misrepresentation of the oxygen minimum zones. In this study, we analyze the water mass properties associated with these systems of jets using velocity and hydrographic sections. Data acquired during a dedicated cruise carried out in the western part of the basin and supplemented by cross-equatorial sections from historical cruises in the central and eastern parts are analyzed. While it is confirmed that the... |
| Tipo: Text |
Palavras-chave: Pacific Ocean; Tropics; Jets. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00593/70490/68635.pdf |
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| Barrientos-Muñoz,Karla G.; Heidemeyer,Maike; Ortega-Gordillo,Luis Fernando; Valencia-Díaz,Miller; Hinojosa-Romero,Carlos Andrés; Valencia-González,Santiago; Montaño,Héctor Javier; Diaz granados,Maria Claudia; Caldas,Juan Pablo; Sevilla-Dueñas,Edward Leonardo; Arauz,Randall; Ramírez-Gallego,Cristian. |
| ABSTRACT The species and sizes of sea turtles present in the Bahía Málaga Conservation Mosaic, Valle del Cauca, were characterized between 2016-2020 through aquatic monitoring and voluntary delivery by native fishermen. The registry of individuals was determined by aquatic monitoring, which was divided into three phases: exploratory sampling, continuous sampling, standardized sampling, plus voluntary deliveries by fishermen in their fishing tasks. A total of 107 hours of effort were used to detect 51 individuals of hawksbill (Eretmochelys imbricata) and black (Chelonia mydas) turtles. These results contribute as a baseline for the knowledge of sea turtles as an effective strategy for research and conservation in Bahía Málaga. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eretmochelys imbricata; Chelonia mydas; In-water monitoring; Pacific Ocean. |
| Ano: 2022 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612022000100117 |
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| Registros recuperados: 22 | |
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