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Registros recuperados: 22
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Dinâmica do carbono na conversão de floresta para pastagens em argissolos da formação geológica Solimões, no sudoeste da Amazônia. Repositório Alice
SALIMON, C. I.; WADT, P. G. S.; MELO, A. W. F. de..
O objetivo deste trabalho foi avaliar a dinâmica, o estoque e a razão isotópica do carbono nos três tipos de uso da terra do sudoeste da Amazônia, onde predominam Argissolos com argilas de alta atividade. Foram selecionados dois locais da região leste do Estado do Acre e, em cada local, abriram-se trincheiras nas quais foram coletadas amostras indeformadas nas profundidades de 0 a 5, 5 a 10, 20 a 25 e 50 a 55cm, sob cobertura de floresta primária, floresta secundária e pastagens. Nas amostras, determinou-se a densidade aparente, teor de carbono e a razão isotópica do carbono, além de características físicas (granulometria) e químicas (pH, teores de cátions trocáveis, acidez potencial). Os resultados mostraram que o uso do solo com pastagens foi responsável...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Pasture-forest conversion; Conversión pasto-bosque; Argissolo; Dinâmica do carbono; Ultisoils; Razão isotópica; Mudança climática global; Formação Solimões; Sudoeste da Amazônia; Uso da terra; Pastagem; Floresta; Solo argiloso; Propriedade físico-química; Carbono; Estoque; Isótopo; Land use; Pastures; Clay soils; Soil chemical properties; Soil physical properties; Isotopes; Carbon sinks; Climate change; Southwestern Amazon; Uso de la tierra; Pastizales; Suelos arcillosos; Propiedades químicas del suelo; Propiedades fìsicas del suelo; Isótopo; Reservorios de carbono; Cambio climático; Amazon sudoriental.
Ano: 2007 URL: http://www.alice.cnptia.embrapa.br/handle/doc/497730
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Efeito da fitase na biodisponibilidade do fósforo do farelo de arroz em frangos de corte. Repositório Alice
CONTE, A. J.; TEIXEIRA, A. S.; FIGUEIRÊDO, A. V. DE; VITTI, D. M. S. S.; SILVA FILHO, J. C. da.
O trabalho objetivou determinar a ação da enzima fitase sobre a biodisponibilidade do fósforo do farelo de arroz em dietas de frangos de corte, pela técnica de diluição isotópica. Os tratamentos consistiram de uma dieta sem farelo de arroz integral e sem suplementação de fósforo inorgânico (0,388% de P total), e quatro dietas com 15% de farelo de arroz integral, sem suplementação de fósforo inorgânico (0,56% de P total) e com quatro níveis de fitase (0, 400, 800 e 1,200 FTU/kg). No quinto dia do experimento, cada ave recebeu, via peritonial, 3,5 MBq de 32P. Nos quatro dias subseqüentes, coletaram-se amostras de sangue e excretas para as análises. As perdas endógenas fecais, a absorção aparente e verdadeira de fósforo e o fósforo no plasma aumentaram de...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Absorção; Excreção; Nutrientes; Isótopos; Técnicas de rastreio; Absorption; Excretion; Nutrients; Isotopes; Tracer techniques.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/107377
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Estudio de las tramas tróficas asociadas a diferentes densidades de vieira Patagónica Zygochlamys patagonica del Atlántico SO mediante el uso de isótopos estables OceanDocs
Schwartz, M..
Zygochlamys patagonica (King and Broderip, 1832) is an ecosystem engineer mollusk which forms aggregations or banks, of different densities, in the main frontal systems of the SW Atlantic Ocean. The objectives of this work were to analyze the composition, biomass, diversity and species richness of the benthic invertebrate assemblages at different scallop densities as well as the variability of their trophic webs at high and low scallop densities. For this, samples of the benthic invertebrate assemblages were taken at the Shelf Break Front with a non-selective epibenthic dredge. It was evaluated if the abundance (ind/m2) or biomass (colonial species, gr/m2) of the different taxa varied with scallop densities. The results showed that from 14 analyzed, the...
Tipo: Theses and Dissertations Palavras-chave: Benthos; Ecological associations; Trophic relationships; Food webs; Biomass; Isotopes; Shelf fronts; Zygochlamys patagonica; Marine environment.
Ano: 2011 URL: http://hdl.handle.net/1834/4521
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Free gas and gas hydrates from the Sea of Marmara, Turkey Chemical and structural characterization ArchiMer
Bourry, Christophe; Chazallon, Bertrand; Charlou, Jean-luc; Donval, Jean-pierre; Ruffine, Livio; Henry, Pierre; Geli, Louis; Cagatay, M. Namik; Inan, Sedat; Moreau, Myriam.
Gas hydrates and gas bubbles were collected during the MARNAUT cruise (May-June 2007) in the Sea of Marmara along the North Anatolian Fault system, Turkey. Gas hydrates were sampled in the western part of the Sea of Marmara (on the Western High), and three gas-bubble samples were recovered on the Western High, the Central High (center part of the Sea of Marmara) and in the Cinarcik Basin (eastern part of the Sea of Marmara). Methane is the major component of hydrates (66.1%), but heavier gases such as C-2, C-3, and i-C-4 are also present in relatively high concentration. The methane contained within gas hydrate is clearly thermogenic as evidenced by a low C-1/C-2 + C-3 ratio of 3.3, and carbon and hydrogen isotopic data (delta C-13(CH4) of -44.1 parts per...
Tipo: Text Palavras-chave: Isotopes; Thermogenic gas; Gas bubbles; Gas hydrate; Sea of Marmara.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6844.pdf
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Ge and Si isotope signatures in rivers: A quantitative multi-proxy approach ArchiMer
Baronas, J. Jotautas; Torres, Mark A.; West, A. Joshua; Rouxel, Olivier; Georg, Bastian; Bouchez, Julien; Gaillardet, Jerome; Hammond, Douglas E..
Solutes derived from the dissolution of silicate minerals play a key role in Earth’s climate via the carbon and other biogeochemical cycles. Silicon (Si) is a unique constituent of silicate minerals and a biologically important nutrient, so tracing its behavior in near-surface environments may provide important insights into weathering processes. However, Si released by weathering is variably incorporated into secondary mineral phases and biota, obscuring signals derived from primary weathering processes. Due to chemical similarities, Germanium (Ge) may help better understand the Si cycle and its relationship to chemical weathering. With this aim, we report new measurements of the concentration and isotopic composition of Ge for both the dissolved and...
Tipo: Text Palavras-chave: Germanium; Silicon; Isotopes; Rivers; Weathering; Fractionation.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00460/57196/59370.pdf
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Helium isotopes at the Rainbow hydrothermal site (Mid-Atlantic Ridge, 36 degrees 14 ' N) ArchiMer
Jean Baptiste, Philippe; Fourre, Elise; Charlou, Jean-luc; German, Christopher; Radford Knoery, Joel.
The He-3/He-4 ratio and helium concentration have been measured in the vent fluids and the dispersing plume of the Rainbow hydrothermal site, on the Mid-Atlantic Ridge (MAR). The He-3/He-4 ratio (7.51 R-a) and He-3 end-member concentration (25 pmol/kg) are in the range of observed values elsewhere on mid-ocean ridges, pointing to the relative homogeneity of the upper mantle with respect to helium isotope geochemistry. He-3 is linearly correlated with methane and manganese throughout the plume, with CH4/He-3 and Mn/He-3 ratios identical to those measured in the hot fluids. The bulk residence time of the plume in the rift valley estimated from the plume He-3 budget is similar to20 days. The He-3 flux transported by the plume, calculated from current-meter...
Tipo: Text Palavras-chave: Mid Atlantic Ridge; Heat flux; Isotopes; Hydrothermal vents; Helium.
Ano: 2004 URL: https://archimer.ifremer.fr/doc/2004/publication-772.pdf
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Iron absorption from biofortified beans evalueted by stable isotopes. Repositório Alice
JUNQUEIRA-FRANCO, M. V. M.; NUTTI, M. R.; CARVALHO, J. L. V. de; ABRAMS, S.; MARCHINI, J. S.; OLIVEIRA, J. E. D. de.
ABSTRACT - The introduction of biofortified crops like beans with higher iron content is a useful tool in preventing diseases such as anemia. The biofortification aims to reach the root of the problem of malnutrition, targets the neediest population, uses embedded distribution mechanisms, is scientifically feasible and effective in terms of cost, and complements other ongoing interventions to control micronutrient deficiency. Thus the measurement of mineral absorption is essential to enable the use of biofortified crops. This study evaluated the iron bioavailability of common bean varieties BRS Estilo and iron biofortified BRS Pontal in man through reliable techniques and have not yet used in Brazil. The beans used was produced by EMBRAPA / Agro Food....
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Isótopos; Isotopes; Biodisponibilidade; Bioavailability; Ferro; Iron; Feijão; Beans.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1027871
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Origine, devenir et contrôle de la matière particulaire dans les élevages de poissons marins en système recyclé ArchiMer
Franco, Miguel.
The particulate matter plays an essential role in the functioning of recirculating aquaculture systems (RAS). Rich in organic substances, it provides ideal conditions for the bacterial development, which contribute to its mineralization. The understanding of interactions between the bio-geochemical cycles of carbon and nitrogen in these processes is necessary to define an effective and adapted management of aquaculture facilities. A methodology using natural stable isotopes (13C and 15N) and elemental carbon and nitrogen analysis on particulate matter, allows to identify its sources and to quantify its fluxes. Applying this methodology, we found an enrichment of 13C in dorsal muscle of reared fish and non differences of 13C in fish liver compared to the...
Tipo: Text Palavras-chave: Nitrogen; Carbon; Isotopes; Organic matter; Particulate matter; Dicentrarchus labrax; Seabass; Recirculating systems; Aquaculture; Azote; Carbone; Isotopes; Matière organique; Matière particulaire; Dicentrarchus labrax; Bar; Système de recirculation; Aquaculture.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/these-322.pdf
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Palisadegrass effects on N fertilizer dynamic in intercropping systems with corn. Repositório Alice
ALMEIDA, R. E. M. de; OLIVEIRA, S. M. de; LAGO, B. C.; P. JUNIOR, C.; TRIVELIN, P. C. O.; FAVARIN, J. L..
Corn grain yield, nitrogen (N) fertilizer efficiency and distribution to corn alone and three forms of corn and palisadegrass (Urochloa spp.) intercropping implantation was investigated. A field experiment with 15N labeling fertilizer was performed in randomized block design. No form of palisadegrass intercropping implantation affected corn grain yield, total N accumulation and N use efficiency (NUE), which were 8.7 t ha-1, 205 kg ha-1 and 37% respectively. The palisadegrass produced on average 1.9 t of dry mass, absorbing a maximum of 6 kg ha-1 or 5.5% of N fertilizer during corn growing. Furthermore, the palisadegrass did not affect N fertilizer distribution in soil-plant system, in which 28.2% was recovered in the soil and 40.4% in the plants (corn +...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Urochloa spp; Plantio direto; Fertilizante nitrogenado; Milho; Isotopes; No-tillage; Urochloa; Corn; Nutrient use efficiency.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078379
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Primary carbon sources for juvenile penaeid shrimps in a mangrove-fringed Bay of Inhaca Island, Mozambique: a dual carbon and nitrogen isotope analysis OceanDocs
Macia, A..
A study to estimate the relative importance of mangrove primary carbon and nitrogen sources to five commercial penaeid shrimps species was done at Saco da Inhaca, a non-estuarine mangrove-fringed bay on Inhaca Island, southern Mozambique. Carbon and nitrogen stable isotope ratios were determined in a variety of primary producers (mangroves, epiphytes, phytoplankton and seagrasses), sediments and in five penaeid shrimp species (Penaeus (Fenneropenaeus) indicus, P. japonicus, P. semisulcatus, Metapenaeus monoceros and M. stebbingi), collected within the bay in different habitats and during two different periods. The penaeid shrimps showed 13C values ranging from â 13 to â 19 â °, (average of â 15.6 ± 0.4 â °, n=19) which is highly enriched compared to...
Tipo: Journal Contribution Palavras-chave: PENAEUS INDICUS; METAPENAEUS MONOCEROS; METAPENAEUS STEBBINGI; PENAEUS SEMISULCATUS; MARSUPENAEUS JAPONICUS; Shrimp culture; Nitrogen; Mangrove swamps; Carbon; Isotopes; Penaeid shrimp fisheries.
Ano: 2004 URL: http://hdl.handle.net/1834/1120
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Relationships between transpiration efficiency and carbon isotope discrimination in chickpea (C. arietinum L) Open Agri
Kashiwagi, J..
Palavras-chave: Transpiration (animals); Genotypes; Chickpeas; Herbicides; Isotopes; Drought stress; Harvest index; Vegetative stage; Carbonation; Weeds.
Ano: 2006 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3184
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Respostas bioquímicas e fisiológicas em híbridos de milho em função da aplicação de doses de nitrogênio em cobertura. Repositório Alice
MELO, M. D.; PRIMO, A. A.; RODRIGUES, H. C. de A.; SOUZA, H. A. de.
Resumo: Objetivou?se avaliar a adubação nitrogenada em cobertura em variáveis bioquímicas-fisiológicas de diferentes híbridos de milho. Onde inicialmente foi realizada uma coleta de solo na camada de 0-20 cm para verificar a fertilidade do mesmo, posteriormente à área foi preparada com adubação de semeadura. Os tratamentos corresponderam a dois genótipos submetidos a quatro níveis de N. O delineamento foi feito em blocos ao acaso, com três repetições. Foram realizadas coletas e analises dos dados, quando significativos foi executado teste de comparação de médias para o fator qualitativo e análise de regressão linear e polinomial para o fator quantitativo. As análises foram procedidas com auxílio do software SISVAR. Houve diferença de respostas...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Zea mays; Milho; Adubação; Grão; Produção; Isótopo; Fertilization; Isotopes; Grains; Maize.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/975440
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Seasonal changes in the use of marine food resources by Cinclodes nigrofumosus (furnariidae, aves): carbon isotopes and osmoregulatory physiology RChHN
SABAT,PABLO; MARTÍNEZ DEL RÍO,CARLOS.
Passerines lack functional salt glands and to a large extent avoid feeding on marine invertebrates. An exception is Cinclodes nigrofumosus. Previous studies reported that the contents of its gastrointestinal tract had a lower osmolality than seawater suggesting that birds were supplementing their marine invertebrate diet with terrestrial invertebrates and fresh water at certain periods of the year. We report seasonal changes in the diet of C. nigrofumosus at two contrasting coastal localities in Central Chile and document the potential correlation between weather and feeding habits with osmoregulatory features in this species. We expected that C. nigrofumosus would increase its use of osmotically challenging marine dietary sources when fresh water is...
Tipo: Journal article Palavras-chave: Cinclodes; Isotopes; Renal function; Osmoregulation; Seasonal changes.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200009
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Stable oxygen and hydrogen isotopic tracers in Amazon shelf waters during Amasseds ArchiMer
Karr, Jd; Showers, Wj.
A detailed hydrographic survey of the water column of the Amazon shelf was performed using stable oxygen and hydrogen isotopes to determine the source and fate of waters on the shelf. delta(18)O-H2O and deltaD measurements were made on water column samples from approximately 60 stations (three depths per station) which were each collected during four Amasseds (A Multidisciplinary Amazon Shelf SEDiment Study) cruises: I8909-August 1989, falling river discharge; I9002-March 1990, rising river discharge; I9004-May 1990, peak discharge: I9113-November 1991, minimum discharge. Isotopes were compared with salinity and temperature measurements in order to identify water masses and mixing. The characteristics (salinity, temperature, delta(18)O, deltaD and d) are...
Tipo: Text Palavras-chave: Amazone; Isotopes; 18O; Deutérium; Hydrologie; Amazon; Isotope; O-18; Deuterium; Hydrography.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00322/43321/42933.pdf
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Temporal magma source changes at Gaua volcano, Vanuatu island arc ArchiMer
Beaumais, Aurelien; Bertrand, Herve; Chazot, Gilles; Dosso, Laure; Robin, Claude.
Gaua Island (also called Santa Maria), from the central part of the Vanuatu arc, consists of a large volcano marked by a caldera that hosts the active Mount Garet summit cone. In this paper, a geochemical study including Sr, Nd, Pb and Hf isotopic compositions of 25 lavas emitted since 1.8 Ma is presented, with a focus on the volcanic products that preceded (old volcanics, main cone and pyroclastic series) and followed (Mount Garet) the caldera forming event. All lavas show an island arc signature with enrichment in LILE and depletion in HFSE. Post-caldera lavas define a medium-K calc-alkaline trend, whereas lavas from the former main cone have high-K calc-alkaline compositions. Compared to the pre-caldera volcanic suite, the Mount Garet lavas have...
Tipo: Text Palavras-chave: Gaua; Vanuatu; Geochemistry; Isotopes; Subduction; Mantle source.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00319/43052/42557.pdf
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Temporal source evolution and crustal contamination at Lopevi Volcano, Vanuatu Island Arc ArchiMer
Beaumais, Aurelien; Chazot, Gilles; Dosso, Laure; Bertrand, Herve.
Here we present a new geochemical study of Lopevi volcano, one the most active volcanoes in the Vanuatu island arc. We focus on the temporally well-defined sequence of lava flows emitted since 1960, and for the first time, on pre-1960 volcanic products, including high-MgO basalts and felsic andesites, the most evolved lavas sampled so far on this island. This work reports the first Pb and Hf isotopic study of lavas from Lopevi island. These lavas display correlations between differentiation indexes such as SiO2 content and isotopic ratios. The felsic andesites extend the known correlations with both the least (Sr-Pb) and the most (Nd-Hf) radiogenic isotopic compositions on the island. Our results confirm that the rising magma interacted with the sub-arc...
Tipo: Text Palavras-chave: Lopevi; Vanuatu; Geochemistry; Isotopes; Subduction; Mantle source.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00167/27801/26223.pdf
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The GEOTRACES Intermediate Data Product 2014 ArchiMer
Mawji, Edward; Schlitzer, Reiner; Dodas, Elena Masferrer; Abadie, Cyril; Abouchami, Wafa; Anderson, Robert F.; Baars, Oliver; Bakker, Karel; Baskaran, Mark; Bates, Nicholas R.; Bluhm, Katrin; Bowie, Andrew; Bown, Johann; Boye, Marie; Boyle, Edward A.; Branellec, Pierre; Bruland, Kenneth W.; Brzezinski, Mark A.; Bucciarelli, Eva; Buesseler, Ken; Butler, Edward; Cai, Pinghe; Cardinal, Damien; Casciotti, Karen; Chaves, Joaquin; Cheng, Hai; Chever, Fanny; Church, Thomas M.; Colman, Albert S.; Conway, Tim M.; Croot, Peter L.; Cutter, Gregory A.; De Baar, Hein J. W.; De Souza, Gregory F.; Dehairs, Frank; Deng, Feifei; Huong Thi Dieu,; Dulaquais, Gabriel; Echegoyen-sanz, Yolanda; Edwards, R. Lawrence; Fahrbach, Eberhard; Fitzsimmons, Jessica; Fleisher, Martin; Frank, Martin; Friedrich, Jana; Fripiat, Francois; Galer, Stephen J. G.; Gamo, Toshitaka; Solsona, Ester Garcia; Gerringa, Loes J. A.; Godoy, Jose Marcus; Gonzalez, Santiago; Grossteffan, Emilie; Hatta, Mariko; Hayes, Christopher T.; Heller, Maija Iris; Henderson, Gideon; Huang, Kuo-fang; Jeandel, Catherine; Jenkins, William J.; John, Seth; Kenna, Timothy C.; Klunder, Maarten; Kretschmer, Sven; Kumamoto, Yuichiro; Laan, Patrick; Labatut, Marie; Lacan, Francois; Lam, Phoebe J.; Lannuzel, Delphine; Le Moigne, Frederique; Lechtenfeld, Oliver J.; Lohan, Maeve C.; Lu, Yanbin; Masque, Pere; Mcclain, Charles R.; Measures, Christopher; Middag, Rob; Moffett, James; Navidad, Alicia; Nishioka, Jun; Noble, Abigail; Obata, Hajime; Ohnemus, Daniel C.; Owens, Stephanie; Planchon, Frederic; Pradoux, Catherine; Puigcorbe, Viena; Quay, Paul; Radic, Amandine; Rehkaemper, Mark; Remenyi, Tomas; Rijkenberg, Micha J. A.; Rintoul, Stephen; Robinson, Laura F.; Roeske, Tobias; Rosenberg, Mark; Van Der Loeff, Michiel Rutgers; Ryabenko, Evgenia; Saito, Mak A.; Roshan, Saeed; Salt, Lesley; Sarthou, Geraldine; Schauer, Ursula; Scott, Peter; Sedwick, Peter N.; Sha, Lijuan; Shiller, Alan M.; Sigman, Daniel M.; Smethie, William; Smith, Geoffrey J.; Sohrin, Yoshiki; Speich, Sabrina; Stichel, Torben; Stutsman, Johnny; Swift, James H.; Tagliabue, Alessandro; Thomas, Alexander; Tsunogai, Urumu; Twining, Benjamin S.; Van Aken, Hendrik M.; Van Heuven, Steven; Van Ooijen, Jan; Van Weerlee, Evaline; Venchiarutti, Celia; Voelker, Antje H. L.; Wake, Bronwyn; Warner, Mark J.; Woodward, E. Malcolm S.; Wu, Jingfeng; Wyatt, Neil; Yoshikawa, Hisayuki; Zheng, Xin-yuan; Xue, Zichen; Zieringer, Moritz; Zimmer, Louise A..
The GEOTRACES Intermediate Data Product 2014 (IDP2014) is the first publicly available data product of the international GEOTRACES programme, and contains data measured and quality controlled before the end of 2013. It consists of two parts: (1) a compilation of digital data for more than 200 trace elements and isotopes (TEls) as well as classical hydrographic parameters, and (2) the eGEOTRACES Electronic Atlas providing a strongly inter-linked on-line atlas including more than 300 section plots and 90 animated 3D scenes. The IDP2014 covers the Atlantic, Arctic, and Indian oceans, exhibiting highest data density in the Atlantic. The TEI data in the IDP2014 are quality controlled by careful assessment of intercalibration results and multi-laboratory data...
Tipo: Text Palavras-chave: GEOTRACES; Trace elements; Isotopes; Electronic atlas.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00308/41910/41190.pdf
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The GEOTRACES Intermediate Data Product 2017 ArchiMer
Schlitzer, Reiner; Anderson, Robert F.; Dodas, Elena Masferrer; Lohan, Maeve; Geibere, Walter; Tagliabue, Alessandro; Bowie, Andrew; Jeandel, Catherine; Maldonado, Maria T.; Landing, William M.; Cockwell, Donna; Abadie, Cyril; Abouchami, Wafa; Achterberg, Eric P.; Agather, Alison; Aguliar-islas, Ana; Van Aken, Hendrik M.; Andersen, Morten; Archer, Corey; Auro, Maureen; De Baar, Hein J.; Baars, Oliver; Baker, Alex R.; Bakker, Karel; Basak, Chandranath; Baskaran, Mark; Bates, Nicholas R.; Bauch, Dorothea; Van Beek, Pieter; Behrens, Melanie K.; Black, Erin; Bluhm, Katrin; Bopp, Laurent; Bouman, Heather; Bowman, Katlin; Bown, Johann; Boyd, Philip; Boye, Marie; Boyle, Edward A.; Branellec, Pierre; Bridgestock, Luke; Brissebrat, Guillaume; Browning, Thomas; Bruland, Kenneth W.; Brumsack, Hans-juergen; Brzezinski, Mark; Buck, Clifton S.; Buck, Kristen N.; Buesseler, Ken; Bull, Abby; Butler, Edward; Cai, Pinghe; Camara Mor, Patricia; Cardinal, Damien; Carlson, Craig; Carrasco, Gonzalo; Casacuberta, Nuria; Casciotti, Karen L.; Castrillejo, Maxi; Chamizo, Elena; Chance, Rosie; Charette, Matthew A.; Chaves, Joaquin E.; Cheng, Hai; Chever, Fanny; Christl, Marcus; Church, Thomas M.; Closset, Ivia; Colman, Albert; Conway, Tim M.; Cossa, Daniel; Croot, Peter; Cullen, Jay T.; Cutter, Gregory A.; Daniels, Chris; Dehairs, Frank; Deng, Feifei; Dieu, Huong Thi; Duggan, Brian; Dulaquais, Gabriel; Dumousseaud, Cynthia; Echegoyen-sanz, Yolanda; Edwards, R. Lawrence; Ellwood, Michael; Fahrbach, Eberhard; Fitzsimmons, Jessica N.; Flegal, A. Russell; Fleisher, Martin Q.; Van De Flierdt, Tina; Frank, Martin; Friedrich, Jana; Fripiat, Francois; Froellje, Henning; Galer, Stephen J. G.; Gamo, Toshitaka; Ganeshram, Raja S.; Garcia-orellana, Jordi; Garcia-solsona, Ester; Gault-ringold, Melanie; George, Ejin; Gerringa, Loes J. A.; Gilbert, Melissa; Godoy, Jose M.; Goldstein, Steven L.; Gonzalez, Santiago R.; Grissom, Karen; Hammerschmidt, Chad; Hartman, Alison; Hassler, Christel S.; Hathorne, Ed C.; Hatta, Mariko; Hawco, Nicholas; Hayes, Christopher T.; Heimburger, Lars-eric; Helgoe, Josh; Heller, Maija Iris; Henderson, Gideon M.; Henderson, Paul B.; Van Heuven, Steven; Ho, Peng; Horner, Tristan J.; Hsieh, Yu-te; Huang, Kuo-fang; Humphreys, Matthew P.; Isshiki, Kenji; Jacquot, Jeremy E.; Janssen, David J.; Jenkins, William J.; John, Seth; Jones, Elizabeth M.; Jones, Janice L.; Kadko, David C.; Kayser, Rick; Kenna, Timothy C.; Khondoker, Roulin; Kim, Taejin; Kipp, Lauren; Klar, Jessica K.; Klunder, Maarten; Kretschmer, Sven; Kumamoto, Yuichiro; Laan, Patrick; Labatut, Marie; Lacan, Francois; Lam, Phoebe J.; Lambelet, Myriam; Lamborg, Carl H.; Le Moigne, Frederic A. C.; Le Roy, Emilie; Lechtenfeld, Oliver J.; Lee, Jong-mi; Lherminier, Pascale; Little, Susan; Lopez-lora, Mercedes; Lu, Yanbin; Masque, Pere; Mawji, Edward; Mcclain, Charles R.; Measures, Christopher; Mehic, Sanjin; Barraqueta, Jan-lukas Menzel; Van Der Merwe, Pier; Middag, Rob; Mieruch, Sebastian; Milne, Angela; Minami, Tomoharu; Moffett, James W.; Moncoiffe, Gwenaelle; Moore, Willard S.; Morris, Paul J.; Morton, Peter L.; Nakaguchi, Yuzuru; Nakayama, Noriko; Niedermiller, John; Nishioka, Jun; Nishiuchi, Akira; Noble, Abigail; Obata, Hajime; Ober, Sven; Ohnemus, Daniel C.; Van Ooijen, Jan; O'Sullivan, Jeanette; Owens, Stephanie; Pahnke, Katharina; Paul, Maxence; Pavia, Frank; Pena, Leopoldo D.; Petersh, Brian; Planchon, Frederic; Planquette, Helene; Pradoux, Catherine; Puigcorbe, Viena; Quay, Paul; Queroue, Fabien; Radic, Amandine; Rauschenberg, S.; Rehkamper, Mark; Rember, Robert; Remenyi, Tomas; Resing, Joseph A.; Rickli, Joerg; Rigaud, Sylvain; Rijkenberg, Micha J. A.; Rintoul, Stephen; Robinson, Laura F.; Roca-marti, Montserrat; Rodellas, Valenti; Roeske, Tobias; Rolison, John M.; Rosenberg, Mark; Roshan, Saeed; Van Der Loaff, Michiel M. Rutgers; Ryabenko, Evgenia; Saito, Mak A.; Salt, Lesley A.; Sanial, Virginie; Sarthou, Geraldine; Schallenberg, Christina; Schauer, Ursula; Scher, Howie; Schlosser, Christian; Schnetger, Bernhard; Scott, Peter; Sedwick, Peter N.; Semiletov, Igor; Shelley, Rachel; Sherrell, Robert M.; Shiller, Alan M.; Sigman, Daniel M.; Singh, Sunil Kumar; Slagter, Hans A.; Slater, Emma; Smethie, William M.; Snaith, Helen; Sohrin, Yoshiki; Sohst, Bettina; Sonke, Jeroen E.; Speich, Sabrina; Steinfeldt, Reiner; Stewart, Gillian; Stichel, Torben; Stirling, Claudine H.; Stutsman, Johnny; Swarr, Gretchen J.; Swift, James H.; Thomas, Alexander; Thorne, Kay; Till, Claire P.; Till, Ralph; Townsend, Ashley T.; Townsend, Emily; Tuerena, Robyn; Twining, Benjamin S.; Vance, Derek; Velazquez, Sue; Venchiarutti, Celia; Villa-alfageme, Maria; Vivancos, Sebastian M.; Voelker, Antje H. L.; Wake, Bronwyn; Warner, Mark J.; Watson, Ros; Van Weerlee, Evaline; Weigand, M. Alexandra; Weinstein, Yishai; Weiss, Dominik; Wisotzki, Andreas; Woodward, E. Malcolm S.; Wu, Jingfeng; Wu, Yingzhe; Wuttig, Kathrin; Wyatt, Neil; Xiang, Yang; Xie, Ruifang C.; Xue, Zichen; Yoshikawa, Hisayuki; Zhang, Jing; Zhang, Pu; Zhao, Ye; Zheng, Linjie; Zheng, Xin-yuan; Zieringer, Moritz; Zimmer, Louise A.; Ziveri, Patrizia; Zunino, Patricia; Zurbrick, Cheryl.
The new IDP2017 is a significant improvement over the earlier IDP2014 and roughly doubles the number of included cruises, stations, samples and parameters. The IDP2017 is a truly international product containing data from 326 researchers from 25 countries. The IDP2017 provides data for the Pacific Ocean, and the Mediterranean and Black seas, in addition to Atlantic, Arctic and Indian Oceans that were already represented in the previous data product. For the first time, the IDP2017 contains significant amounts of biogeochemistry data as well as TEI data for aerosols and rain. As before, users can obtain complete IDP2017 data sets as bulk downloads. Alternatively, there is now a customisable online data extraction service that allows data selections by...
Tipo: Text Palavras-chave: GEOTRACES; Trace elements; Isotopes; Electronic atlas; IDP2017.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00442/55362/56877.pdf
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The hydrothermal vent community of a new deep-sea field, Ashadze-1, 12°58'N on the Mid-Atlantic Ridge ArchiMer
Fabri, Marie-claire; Bargain, Annaelle; Briand, Patrick; Gebruk, A.; Fouquet, Yves; Morineaux, Marie; Desbruyeres, Daniel.
Ashadze-1 (128 580N 448 510W, 4080 m) on the Mid-Atlantic Ridge (MAR) is the deepest known ctive hydrothermal vent ield. The first observations on this site were numerous clear and black smokers and surprisingly few nown symbiotic species ominant in other vent areas on the MAR. The species most abundant at Ashadze-1 are those usually ound at the periphery f hydrothermal communities: sea-anemones Maractis rimicarivora and chaetopterid polychaetes hyllochaetopterus sp. ov. This study comprised site mapping and faunal sampling and Ashadze-1 was completely mapped y using the Remote perated Vehicle ‘Victor 6000’ and a new high resolution tool available for deep-sea research. A photo-mapping survey was carried out with a long range optical black and white...
Tipo: Text Palavras-chave: Hydrothermal vent; Mid-Atlantic Ridge; Maractis rimicarivora; Isotopes.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00004/11565/11356.pdf
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Timing of Svalbard/Barents Sea Ice Sheet Decay during the Last Glacial Termination ArchiMer
Snow, Tasha.
The Arctic and North Atlantic underwent significant climactic changes since the Last Glacial Maximum (25,000 years before present (1950 AD); ka BP), but offsets in the timing of events between the two regions are poorly constrained due to age model uncertainties that arise from changing radiocarbon reservoir ages. Here, we use a relatively high-resolution, multi-proxy stable isotope and sedimentologic dataset from Eastern Fram Strait (ODP Leg 162 Site 986) marine sediments to constrain the timing of Svalbard/Barents Sea Ice Sheet decay and infer deglacial reservoir ages over the last 30 ka. We use magnetic susceptibility, inorganic and organic carbon, foraminiferal assemblage counts, planktonic foraminiferal isotopes, and iceberg-rafted debris proxies to...
Tipo: Text Palavras-chave: Paleoceanography; Meltwater; Isotopes; Foraminifera; Fram Strait; Reservoir age.
Ano: 2014 URL: https://archimer.ifremer.fr/doc/00499/61045/64452.pdf
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