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| Registros recuperados: 2.625 | |
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| Little, Crispin T. S.; Johannessen, Karen C; Bengtson, Stefan; Chan, Clara S; Ivarsson, Magnus; Slack, John F; Broman, Curt; Thorseth, Ingunn H.; Grenne, Tor; Rouxel, Olivier; Bekker, Andrey. |
| Modern marine hydrothermal vents occur in a wide variety of tectonic settings and are characterized by seafloor emission of fluids rich in dissolved chemicals and rapid mineral precipitation. Some hydrothermal systems vent only low‐temperature Fe‐rich fluids, which precipitate deposits dominated by iron oxyhydroxides, in places together with Mn‐oxyhydroxides and amorphous silica. While a proportion of this mineralization is abiogenic, most is the result of the metabolic activities of benthic, Fe‐oxidizing bacteria (FeOB), principally belonging to the Zetaproteobacteria. These micro‐organisms secrete micrometer‐scale stalks, sheaths, and tubes with a variety of morphologies, composed largely of ferrihydrite that act as sacrificial structures, preventing... |
| Tipo: Text |
Palavras-chave: Arizona; Fe-oxidizing bacteria; Hydrothermal vents; Jasper; Late Paleoproterozoic; Verde mining district. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00680/79162/81674.pdf |
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| Chai, Fei; Wang, Yuntao; Xing, Xiaogang; Yan, Yunwei; Xue, Huijie; Wells, Mark; Boss, Emmanuel. |
| Typhoons are assumed to stimulate ocean primary production through the upward mixing of nutrients into the surface ocean, based largely on observations of increased surface chlorophyll concentrations following the passage of typhoons. This surface chlorophyll enhancement, seen on occasion by satellites, more often is undetected due to intense cloud coverage. Daily data from a BGC-Argo profiling float revealed the upper-ocean response to Typhoon Trami in the Northwest Pacific Ocean. Temperature and chlorophyll changed rapidly, with a significant drop in sea surface temperature and surge in surface chlorophyll associated with strong vertical mixing, which was only partially captured by satellite observations. However, no net increase in vertically integrated... |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00645/75667/76533.pdf |
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| Moussa, M.; Cauvin, E.; Le Piouffle, A.; Lucas, O.; Bidault, Adeline; Paillard, Christine; Benoit, F.; Thuillier, B.; Treilles, M.; Travers, Marie-agnes; Garcia, Celine. |
| In mollusk aquaculture, a large number of Vibrio species are considered major pathogens. Conventional methods based on DNA amplification and sequencing used to accurately identify Vibrio species are unsuitable for monitoring programs because they are time-consuming and expensive. The aim of this study was, therefore, to develop the MALDI-TOF MS method in order to establish a rapid identification technique for a large panel of Vibrio species. We created the EnviBase containing 120 main spectra projections (MSP) of the Vibrio species that are potentially responsible for mollusk diseases, comprising 25 species: V. aestuarianus, V. cortegadensis, V. tapetis and species belonging to the Coralliilyticus, Harveyi, Mediterranei, and Orientalis clades. Each MSP was... |
| Tipo: Text |
Palavras-chave: Vibrio; MALDI-TOF MS; Database; Marine mollusk pathogens. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00680/79224/81732.pdf |
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| Chambault, Philippine; Hattab, Tarek; Mouquet, Pascal; Bajjouk, Touria; Jean, Claire; Ballorain, Katia; Ciccione, Stéphane; Dalleau, Mayeul; Bourjea, Jerome. |
| Despite the large number of species distribution modelling (SDM) applications driven by tracking data, individual information is most of the time neglected and traditional SDM approaches commonly focus on predicting the potential distribution at the species or population‐level. By running classical SDMs (population approach) with mixed models including a random factor to account for the variability attributable to individual (individual approach), we propose an innovative five‐steps framework to predict the potential and individual‐level distributions of mobile species using GPS data collected from green turtles. Pseudo‐absences were randomly generated following an environmentally‐stratified procedure. A negative exponential dispersal kernel was... |
| Tipo: Text |
Palavras-chave: GPS tracking; Green turtles; Indian Ocean; Pseudo-absences; Shannon index; Spatial modelling. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00682/79412/81963.pdf |
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| Won, Eun-ji; Kim, Seung Hee; Go, Young-shin; Kumar, K. Suresh; Kim, Min-seob; Yoon, Suk-hee; Bayon, Germain; Kim, Jung-hyun; Shin, Kyung-hoon. |
| The increasing global consumption of seafood has led to increased trade among nations, accompanied by mislabeling and fraudulent practices that have rendered authentication crucial. The multi-isotope ratio analysis is considered as applicable tool for evaluating geographical authentications but requires information and experience to select target elements such as isotopes, through a distinction method based on differences in habitat and physiology due to origin. The present study examined recombination conditions of multi-elements that facilitated geographically distinct classifications of the clams to sort out appropriate elements. Briefly, linear discriminant analysis (LDA) analysis was performed according to several combinations of five stable isotopes... |
| Tipo: Text |
Palavras-chave: Authentication; Manila clam; Stable isotope; Traceability; Linear discriminant analysis. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00685/79701/82488.pdf |
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| Faria,Tiago C.; Guimarães,Karen L. A.; Rodrigues,Luís R. R.; Oliveira,Claudio; Lima,Flávio C.T.. |
| ABSTRACT A new species of Hyphessobrycon belonging to the Hyphessobrycon heterorhabdus species-group from the lower rio Tapajós, state of Pará, Brazil, is described. The new species is allocated into the Hyphessobrycon heterorhabdus species-group due to its color pattern, composed by an anteriorly well-defined, horizontally elongated humeral blotch that becomes diffuse and blurred posteriorly, where it overlaps with a conspicuous midlateral dark stripe that becomes blurred towards the caudal peduncle and the presence, in living specimens, of a tricolored longitudinal pattern composed by a dorsal red or reddish longitudinal stripe, a middle iridescent, golden or silvery longitudinal stripe, and a more ventrally-lying longitudinal dark pattern composed by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Cryptic Species; DNA Barcoding; Rio Amazonas; Rio Tapajós.. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000100207 |
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| Soulié, Tanguy; Mas, Sébastien; Parin, David; Vidussi, Francesca; Mostajir, Behzad. |
| Understanding how aquatic ecosystems respond to perturbations has emerged as a crucial way to predict the future of these ecosystems and to assess their capacity to produce oxygen and store atmospheric carbon. In this context, in situ mesocosm experiments are a useful approach for simulating disturbances and observing changes in planktonic communities over time and under controlled conditions. Within mesocosm experiments, the estimation of fundamental parameters such as gross primary production (GPP), net community production (NCP), and respiration (R) allows the evaluation of planktonic metabolic responses to a perturbation. The continuous estimation of these metabolic parameters in real time and at high frequency is made possible by employing noninvasive... |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00686/79762/82562.pdf |
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| Melo,Marcelo Roberto Souto de; Ribeiro,Mauro César Lambert de Brito; Lima,Flávio César Thadeo de. |
| ABSTRACT A new species of Characidium is described from the Cerrado biome, in Brasília, Distrito Federal, Central Brazil. The new species can be readily diagnosed by the presence of two or three longitudinal rows of dots along the body sides, absence of bars, by the short pectoral fin, which does not reach the vertical through the dorsal fin origin. Additional useful diagnostic characters are the scaled isthmus, absence of the adipose fin, and the terminal mouth. The new species is only known from the córrego Taquara and its tributaries, a tributary of ribeirão do Gama, upstream from lago Paranoá, in the upper rio Paraná basin. In accordance to the IUCN Red List Categories and Criteria, the new species is categorized as Critically Endangered. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endangered species; IUCN; Lago Paranoá; Reserva Ecológica do Instituto Brasileiro de Geografia e Estatística; Rio Paraná basin. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252021000100201 |
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| Stringari, Ce; Prevosto, Marc; Filipot, Jean-francois; Leckler, Fabien; Guimaraes, Pv. |
| This paper presents a novel method for obtaining the probability wave of breaking (Pb) of deep water, dominant wind‐sea waves (that is, waves made of the energy within ±30% of the peak wave frequency) derived from Gaussian wave field theory. For a given input wave spectrum we demonstrate how it is possible to derive a joint probability density function between wave phase speed (c) and horizontal orbital velocity at wave crest (u) from which a model for Pb can be obtained. A non‐linear kinematic wave breaking criterion consistent with the Gaussian framework is further proposed. Our model would allow, therefore, for application of the classical wave breaking criterion (that is, wave breaking occurs if u/c > 1) in spectral wave models which, to the... |
| Tipo: Text |
Palavras-chave: Wave Breaking; Gaussian Field Theory; Wave Modeling. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00677/78894/81199.pdf |
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| MEDEIROS, S. R. de. |
| Com o avanço da vacinação, a maior crise sanitária dos últimos 100 anos parece se encaminhar para virar história, mas seus efeitos ainda serão sentidos por um bom tempo. Para tentar entendê-la melhor, aqui revisitamos as perspectivas do início da pandemia, avaliamos o que, de fato, ocorreu para, assim, nos situarmos melhor onde estamos nesse momento, em especial com foco na pecuária. |
| Tipo: Artigo de periódico |
Palavras-chave: ILPF; Aumento das exportações; Apetite chinês; Agenda ESG. |
| Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1138694 |
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| CASTRO, A. P. de; BORBA, T. C. de O.; NOLDIN, J. A.; WICKERT, E.. |
| A história do arroz é significativa na dinâmica dos povos, da agricultura, do comércio de alimentos e da formação de hábitos e dietas alimentares. A dispersão desse alimento pelo mundo se deu por meio da diáspora africana. Ao chegar à América, o conhecimento dos escravos influenciou os sistemas de cultivos, inclusive de outros produtos. O arroz que, a princípio, alimentava as pessoas nos navios negreiros, passou a ser comercializado na Europa. Inicialmente, era consumido nos países católicos, servido acompanhado de peixes ou em refeições sem carne às sextas-feiras e durante a quaresma, e depois se expandiu por toda a Europa, não só como alimento, mas como matéria-prima da produção de cerveja e de papel. O arroz desempenha papel importante como componente... |
| Tipo: Capítulo em livro técnico (INFOTECA-E) |
Palavras-chave: Arroz; Oryza Sativa; Melhoramento Genético Vegetal; Características Agronômicas; Classificação de Produto; Genótipo; Beneficiamento. |
| Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1134412 |
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| CARBONELL, S. A. M.; CHIORATO, A. F.; BEZERRA, L. M. C.. |
| Neste capítulo serão discutidas: a origem do feijoeiro, a distribuição dos grupos gênicos e as principais características que determinaram, ao longo dos tempos, a domesticação e distribuição no continente americano. A morfologia da planta do feijoeiro e as características do grão, principalmente a cor do tegumento, são determinadas por essa distribuição geográfica, manejo e hábitos de consumo. Da mesma forma que a variabilidade fenotípica do feijoeiro é determinada pela combinação desses grupos gênicos, a variabilidade fenotípica do grão é determinada pela herdabilidade dos caracteres desejáveis ou superiores nas populações. Na indústria e no mercado varejista, a variabilidade de tipos de feijão ofertada ao consumidor é dependente da preferência dos... |
| Tipo: Capítulo em livro técnico (INFOTECA-E) |
Palavras-chave: Feijão; Phaseolus Vulgaris; Características Agronômicas; Morfologia Vegetal; Tegumento; Habito Alimentar. |
| Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1134410 |
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| Registros recuperados: 2.625 | |
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