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	Provedor de dados ArchiMer (18) Colegio de Postgraduados (3) OceanDocs (2) Acta biol.Colomb. (2) Anais da ABC (AABC) (2) Infoteca-e (1) Naturalis (1) Anais da SEB (1) Biota Neotropica (1) Boletín de Investigaciones (1) BABT (1) Ciência Rural (1) Neotropical Entomology (1) Neotropical Ichthyology (1) Rev. Bras. Ciênc. Solo (1) Rev. Bras. entomol. (1) Mais... Autor Dumas, Franck (5) Bailly Du Bois, Pascal (4) Grima, Nicolas (2) Thouvenin, Benedicte (2) ARI NORIEGA,JORGE (1) AZAMBUJA,ROSALIA (1) Agostinho,Angelo Antonio (1) Aquacop, (1) Auger, Pierre-amael (1) Bailly Du Bois, P. (1) Barreto,Cristine Costa (1) Barrigossi,José Alexandre Freitas (1) Bejaoui, B. (1) Beringen, R. (1) Bermúdez Acosta, Jelvys (1) Boer, E. (1) Botta,Robson Antonio (1) Boutier, Laurent (1) Bulla,Cíntia Karen (1) CAMPOS, Z. M. da S. (1) Mais... Palavra-chave Dispersion (38) Dispersión (3) English Channel (3) Hydrodynamic model (3) Maestría (3) Modèle (3) Data collection (2) Dispersal (2) Dissolved substances (2) GIS (2) Invasive species (2) Manche (2) Modeling (2) North Sea (2) Pollination (2) Radionuclide (2) Radionuclides (2) Tritium (2) 42.44 (1) 42.54 (1) Mais... Tipo do documento Text (18) Info:eu-repo/semantics/article (11) Journal Contribution (2) Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) (1) Info:eu-repo/semantics/other (1) Info:eu-repo/semantics/report (1) Report (1) Mais... Ano 2021 (2) 2020 (1) 2018 (3) 2017 (1) 2016 (1) 2015 (3) 2014 (2) 2013 (4) 2012 (3) 2011 (2) 2009 (1) 2008 (1) 2005 (3) 2004 (4) 1998 (2) 1997 (1) 1992 (1) 1991 (1) 1989 (1) 1985 (1) Mais... País France (18) Brazil (11) Colombia (3) Mexico (3) Belgium (2) Netherlands (1) Mais... Idioma Inglês (20) Francês (10) Espanhol (5) Português (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 38 Primeira ... 1 2 ... Última Identificación, dispersión, histopatología e impacto económico de Armillaria en aguacate en Charapan, Michoacán. Colegio de Postgraduados Michua Cedillo, Jeny. La identificación, dispersión e impacto económico de Armillaria sp. en aguacate Hass se estudió en el municipio de Charapan, Michoacán. Armillaria se aisló de raíces de árboles sintomáticos y muertos y se cultivó en BDS. La identificación de la especie se realizó por compatibilidad somática y amplificación de la región IGS-I del ADN ribosomal de 19 aislamientos. Los apareamientos dieron como resultado un solo grupo de compatibilidad; los confrontamientos se realizaron con A. mellea, A. gallica y A. mexicana, donde se observó la separación de las colonias. Las pruebas de patogenicidad se realizaron inoculando 35 plántulas de aguacate en condiciones de invernadero. Las raíces de las plántulas infectadas y de los árboles infectados naturalmente en campo se... Palavras-chave: Compatibilidad somática; Dispersión; Fenoles; IGS; Incidencia; Inoculación; Rizomorfos; Somatic compatibility; Dispersion; Phenols; Incidence; Inoculation; Rhizomorphs; Fitopatología; Maestría. Ano: 2014 URL: http://hdl.handle.net/10521/2218 Identificación de corredores biológicos potenciales para el jaguar (Panthera Onca) en Sierra Abra Tanchipa, San Luis Potosí y sus límites estatales. Colegio de Postgraduados Dueñas López, Gmelina. Los jaguares (Panthera onca) debido a sus amplios ámbitos hogareños son susceptibles a los efectos de la fragmentación. Para disminuir tales efectos, los corredores biológicos han sido propuestos como una herramienta para conectar poblaciones aisladas. La Sierra Madre Oriental (SMO) es una unidad de conservación para los jaguares que se considera con baja probabilidad de sostener poblaciones. Se identificaron corredores biológicos potenciales para el jaguar dentro de la SMO, por medio de técnicas de reconocimiento espacial. Mediante el algoritmo Maxent se identificaron parches de hábitat potencial, y a partir del Proceso Jerárquico Analítico y la Combinación Lineal Ponderada se generó una matriz de resistencia. El modelo con los corredores potencialmente... Palavras-chave: Dispersión; SIG; Rutas de menor costo; Stepping-stone; Dispersion; GIS; Least cost path; Ganadería; Maestría. Ano: 2013 URL: http://hdl.handle.net/10521/2030 Lluvia de semillas y emergencia de plántulas de Pinus patula Schl. et Cham. en Zacualtipán, Hidalgo. Colegio de Postgraduados Castillo Aguilar, Ofelia. La presente investigación es un aporte para entender el comportamiento de la repoblación de Pinus patula Schl. et Cham. en el ejido La Mojonera, Zacualtipán, Hidalgo. Se eligieron dos sitios de una hectárea cada uno. En el primero se aplicó el método de árboles padres (SCM), mientras que el segundo se mantuvo en condición natural (SSM). Para estimar la lluvia de semillas, emergencia y supervivencia de plántulas, así como el número de semillas viables almacenadas en el reservorio del suelo, cada sitio se dividió en 100 cuadros de 10 x 10 m. De manera aleatoria se instalaron 40 trampas circulares de 0.5 m2 cada una, rectángulos de 2m2 y se extrajeron muestras de 3 cm de profundidad en 40 cuadros de 0.5 m2 cada uno para ambos sitios. Estas muestras se... Palavras-chave: Dispersión; Repoblación; Arboles padres; Supervivencia; Causas de mortalidad; Semilla viable; Porcentaje de germinación; Sitios con y sin manejo; Dispersion; Regeneration; Parent trees; Survival; Mortality causes; Viable seed; Germination percentage; Sites with and without management; Forestal; Maestría. Ano: 2013 URL: http://hdl.handle.net/10521/1951 Movimento e área de uso do jacaré-do-pantanal. Infoteca-e CAMPOS, Z. M. da S.; MOURÃO, G. de M.; COUTINHO, M. E.; MAGNUSSON, W.. O estudo dos padrões de movimento dos jacarés do Pantanal ocorreu em uma área de lagos isolados e em uma área cortada por rios intermitentes no Pantanal. Foram marcados jacarés em 100 lagos, na área de lagos (1986-2001), e em 2 rios, na área de rios (1987-1999), recapturados 163 machos adultos, 132 fêmeas adultas e 237 jovens e monitorados 67 jacarés adultos por radiotelemetria nas duas áreas. No intervalo de 2 anos, a maioria dos jovens moveram-se apenas dentro da área de lagos ou da de rios, numa distância máxima de 6,0 km (x = 0,5; DP = 1,0 km), na área de lagos, e de 1,25 km (x= 0,6; DP = 0,3 km), na área de rios. Somente cinco jovens marcados nos lagos foram recapturados depois de um intervalo de 5 a 10 anos. Um jovem permaneceu na área de lago e... Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Yacare; Movement ecology; Dispersion; Caimans; Management.; Dispersão; Ecologia; Manejo; Jacaré; Movimento.; Pantanal.. Ano: 2004 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/811107 Modele tridimensionnel de circulation et de dispersion ArchiMer Thouvenin, Benedicte; Salomon, J. Bottom topography, coastal morphology and density variations are the three factors influencing marine current flow in Seine Bay. Numerical modeling allows the study of this tridimensional structure. Tipo: Text Palavras-chave: Hodographs; Salinity gradients; Coastal zone; Bottom topography; Mathematical models; Tidal currents; Dispersion; Water circulation. Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1260.pdf In-situ database toolbox for short-term dispersion model validation in macro-tidal seas, application for 2D-model ArchiMer Bailly Du Bois, P.; Dumas, Franck; Solier, L.; Voiseux, C.. Appropriate field data are required to check the reliability of hydrodynamic models simulating the dispersion of soluble substances in the marine environment. This study deals with the collection of physical measurements and soluble tracer data intended specifically for this kind of validation. The intensity of currents as well as the complexity of topography and tides around the Cap de La Hague in the centre of the English Channel make it one of the most difficult areas to represent in terms of hydrodynamics and dispersion. Controlled releases of tritium-in the form of HTO-are carried out in this area by the AREVA-NC plant, providing an excellent soluble tracer. A total of 14,493 measurements were acquired to track dispersion in the hours and days... Tipo: Text Palavras-chave: Modelling; Data collection; Tritium; Dispersion; Tidal dynamics; English Channel. Ano: 2012 URL: http://archimer.ifremer.fr/doc/00077/18775/16484.pdf Modélisation hydro-sédimentaire de la rade de Toulon : application à l’étude de la dispersion de radionucléides ArchiMer Dufresne, Christiane; Duffa, Céline; Rey, Vincent; Verney, Romaric. L’objectif de ce travail est mettre en place un modèle hydro-sédimentaire de dispersion des radionucléides, comme outil d’aide à la décision suite à une hypothétique contamination marine accidentelle. Appliqué à la Rade de Toulon, il utilise le modèle MARS-3D pour l’étude hydrodynamique et le module MIXSED pour la dynamique des différentes classes de sédiments. Les cas d’application présentés concernent le césium et le plutonium, qui ont des affinités très différentes avec les sédiments fins. Les simulations de rejet, effectuées en fond de baie, montrent une variabilité saisonnière marquée, due aux conditions météorologiques typiques, mais aussi aux conditions de débit et de charge sédimentaire associée du fleuve Las, qui se jette dans la Rade. Ainsi, les... Tipo: Text Palavras-chave: Modélisation hydro-sédimentaire; Dispersion; Radionucléides; Toulon. Ano: 2016 URL: http://archimer.ifremer.fr/doc/00348/45926/45619.pdf STAMM : un modèle individu-centré de la dispersion active des tortues marines juvéniles. Applications aux cas des tortues luths du Pacifique Ouest et de l’Atlantique Nord-Ouest et aux tortues caouannes de l’ouest de l’océan Indien. ArchiMer Lalire, Maxime. Sea turtles are increasingly threatened by the direct and indirect effects of human activities. Their life cycle is complex, shared between various, and often very distant, habitats. Their conservation therefore requires identifying the habitats occupied at each stage of life and the migration routes between these different habitats. While the spatial ecology of adult turtles is relatively well known, particularly through satellite monitoring, the situation is not the same for juveniles which pelagic development phase remains largely unobserved. In that context, numerical simulation constitutes an appropriate tool to explore the dispersal of juvenile sea turtles from their natal beaches. Until now, simulations were mostly performed under the assumption... Tipo: Text Palavras-chave: Courants marins; Dispersion; Ecologie spatiale; Modélisation lagrangienne; Modèles de mouvement; Modèles d'habitat; Simulations numériques; Tortues marines juvéniles; Tortue luth; Tortue caouanne; Oceanic currents; Dispersal; Spatial ecology; Lagrangian modelling; Movement modelling; Habitat modelling; Numerical simulations; Juvenile sea turtles; Leatherback turtle; Loggerhead turtle.. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00497/60912/64263.pdf Infection characteristics of Himasthla elongata cercariae in cockles as a function of water current ArchiMer De Montaudouin, X; Wegeberg, Am; Jensen, Kt; Sauriau, Pg. Digenean trematodes are widespread parasites of marine fauna. The first intermediate host of Himasthla elongata (Echinostomatidae) is the periwinkle Littorina littorea. The second host is less specific, as it includes Various bivalve species. The definitive host is a waterbird. The free-living cercaria acts to ensure transmission from the first and second intermediate hosts. We examined the impact of water flow (still and running water) and host size (6-8, 8-10, 10-12 mm shell length classes) on the settling success of H. elongata cercariae in the second intermediate host by utilizing the common cockle Cerastoderma edule. Under 2 scenarios (free-stream velocity of 0 and 6 cm s(-1)) more than 90% of the experimental population of cockles (90 individuals per... Tipo: Text Palavras-chave: Cerastoderma edule; Cercariae; Dispersion; Flume; Himasthla elongata; Metacercariae; Transmission efficiency; Trematode. Ano: 1998 URL: https://archimer.ifremer.fr/doc/00446/55807/62267.pdf A Software Package and Hardware Tools for in situ Experiments in a Lagrangian Reference Frame ArchiMer Doglioli, Andrea; Nencioli, Francesco; Petrenko, Anne; Rougier, Gilles; Fuda, Jean-luc; Grima, Nicolas. The Lagrangian Transport Experiment (LATEX) was developed to study the influence of coupled physical and biogeochemical dynamics at the meso- and submesoscales on the transfers of matter and heat between the coastal zone and the open ocean. One of the goals of the Latex10 field experiment, conducted during September 2010 in the Gulf of Lion (northwest Mediterranean), was to mark a dynamical mesoscale feature by releasing a passive tracer [sulfur hexafluoride (SF6)] together with an array of Lagrangian buoys. The goal was to release the tracer in an initial patch as homogeneous as possible in the horizontal, and to study its turbulent mixing and dispersion while minimizing the contribution due to advection. For that, it was necessary to continuously adjust... Tipo: Text Palavras-chave: Dispersion; Lagrangian circulation; Transport; Ship observations; Tracers; Experimental design; Software. Ano: 2013 URL: http://archimer.ifremer.fr/doc/00155/26590/24719.pdf Essai d'une technique de tri sur post-larves de crevettes en sortie de nurserie et effets sur un grossissement intensif (Penaeus vannamei) ArchiMer Aquacop,; Boutier, Laurent. La technique de tri pratiquée avec une maille carrée de 2 mm est bonne et performante par son efficacité et son rendement. Elle est facilement mise en oeuvre sans main-d'oeuvre supplémentaire. Le grossissement des animaux triés montre un effet très positif pour les grandes post- larves avec une réduction de la dispersion et un gain en indice de conversion. Pour les petites post-larves c'est l'inverse avec une augmentation de dispersion et de mortalité dû à une forte présence de queues de lôt. Tipo: Text Palavras-chave: Crevette pénéide; Post-larve; Nurserie; Tri; Grossissement; Dispersion. Ano: 1991 URL: http://archimer.ifremer.fr/doc/00446/55751/57412.pdf Transport et mélange d'un rejet urbain dans le milieu marin - Mer Méditerranée ArchiMer Thouvenin, Benedicte. Dans le cadre du programme national "REJETS URBAINS EN MER", développé par l'IFREMER, en collaboration avec l'Agence de Bassin Rhône Méditerranée Corse, des études sur le comportement d'un effluent émis par un émissaire en profondeur ont été réalisées. Complétant des mesures courantométriques et hydrologiques de longue durée, en un point à la sortie de l'émissaire de TOULON EST, deux modèles mathématiques ont été appliqués pour reproduire et étudier le rejet pendant les deux étapes de dilution. · Le modèle JET, développé par la SOGREAH, a été testé et comparé avec des mesures in situ. Les variations des résultats en fonction des conditions du milieu rencontrées pendant un cycle annuel ont été étudiées. Un modèle de transport et mélange multicouches a été... Tipo: Text Palavras-chave: Rejet urbain; Modèle mathématique; Rade de Toulon; Dispersion; Contamination. Ano: 1992 URL: http://archimer.ifremer.fr/doc/00132/24287/22285.pdf TRANSMER, hydrodynamic model for medium- and long-term simulation of radionuclides transfers in the English Channel and southern North Sea ArchiMer Bailly Du Bois, Pascal; Dumas, Franck. TRANSMER hydrodynamic model simulates dispersion of dissolved substances in seawater at the scale of the English Channel and the south of the North Sea with a mesh size of one kilometre and a time step of 30 minutes. This model evaluates the medium- and long-term consequences of releases of soluble pollutants in the marine ecosystem under normal or accidental conditions, at a very low computation cost (it takes less than one hour to simulate one year). It has been qualitatively and quantitatively validated by 1400 measurements of 125Sb in seawater in the English Channel and the North Sea. Budgets of measured and simulated radionuclide quantities are balanced for theses seas. The correlation factor between individual measurements in seawater and calculation... Tipo: Text Palavras-chave: Pollutant; Ecosystem; Radionuclides; Dispersion; Dissolved substances; Hydrodynamic model. Ano: 2005 URL: https://archimer.ifremer.fr/doc/2005/publication-552.pdf Modélisation hydrodynamique de la dispersion à court terme dans une mer macrotidale: validation par des mesures à haute résolution de radiotraceurs solubles ArchiMer Bailly Du Bois, Pascal; Dumas, Franck. DISPRO project aims to validate hydrodynamic models dispersion parameters by field data for the short-term (hours to week) and short distances (100 meters to 30 km). This project is based on a 2D instantaneous currents model with a mesh size of 110 m, coupled with high frequency field data collected in the release plume. At this step of the works, measurements confirm the reliability of the model during six hours following a release. This validation made possible developpement of models with known incertitude to simulate dispersion of dissolved substances in realistic conditions for normal or accidental situations in macrotidal seas. Tipo: Text Palavras-chave: Validation; Tritium; Dispersion; North sea; Hydrodynamic model; Validation; Tritium; Dispersion; Manche; Modèle. Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/acte-564.pdf Comparative study of potential transfer of natural and anthropogenic cadmium to plankton communities in the North-West African upwelling ArchiMer Auger, Pierre-amael; Machu, Eric; Gorgues, Thomas; Grima, Nicolas; Waeles, Mathieu. A Lagrangian approach based on a physical-biogeochemical modeling was used to compare the potential transfer of cadmium (Cd) from natural and anthropogenic sources to plankton communities (Cd-uptake) in the NorthWest African upwelling. In this region, coastal upwelling was estimated to be the main natural source of Cd while the most significant anthropogenic source for marine ecosystem is provided by phosphate industry. In our model experiment, Cd-uptake (natural or anthropogenic) in the North-West African upwelling is the result of an interplay between the Cd dispersion (by advection processes) and the simulated biological productivity. In the Moroccan waters, advection processes limit the residence time of water masses resulting in a low natural... Tipo: Text Palavras-chave: Cadmium; North-West African upwelling; Phosphate industry; Dispersion; Bioaccumulation; Plankton ecosystem. Ano: 2015 URL: https://archimer.ifremer.fr/doc/00252/36310/35200.pdf Dissolved Radiotracers and Numerical Modeling in North European Continental Shelf Dispersion Studies (1982–2016): Databases, Methods and Applications ArchiMer Bailly Du Bois, Pascal; Dumas, Franck; Voiseux, Claire; Morillon, Mehdi; Oms, Pierre-emmanuel; Solier, Luc. Significant amounts of anthropogenic radionuclides were introduced in ocean waters following nuclear atmospheric tests and development of the nuclear industry. Dispersion of artificial dissolved radionuclides has been extensively measured for decades over the North-European continental shelf. In this area, the radionuclide measurement and release fluxes databases provided here between 1982 and 2016 represent an exceptional opportunity to validate dispersion hydrodynamic models. This work gives accessibility to these data in a comprehensive database. The MARS hydrodynamic model has been applied at different scales to reproduce the measured dispersion in realistic conditions. Specific methods have been developed to obtain qualitative and quantitative results... Tipo: Text Palavras-chave: Radionuclide; Tracer; Data collection; Antimony 125 (Sb-125); Tritium (H-3); Dispersion; Modeling; English Channel; North Sea; Biscay Bay. Ano: 2020 URL: https://archimer.ifremer.fr/doc/00633/74521/74348.pdf An operational model to simulate post-accidental radionuclide transfers in Toulon marine area: preliminary development ArchiMer Duffa, Celine; Dufois, Francois; Coudray, Sylvain. As part of its development of post-accident management tools, the French Institute for Radiological Protection and Nuclear Safety is setting up a model to simulate radionuclide dispersion in the Toulon marine area (one of France's main military ports). The model is based on the MARS 3D code developed by IFREMER. It reproduces hydro-sedimentation phenomena in the Bay of Toulon with a horizontal spatial resolution of 100 m and 30 vertical sigma levels and also factors in radioactive decay and dissolved/particulate distribution of the radionuclides studied. With no tide, the major currents in this area are generated by the wind. The model effectively reproduces the resulting hydrodynamic phenomena, which were measured throughout the summer of 2009 in the... Tipo: Text Palavras-chave: Bay of Toulon; Radionuclides; Dispersion; MARS. Ano: 2011 URL: http://archimer.ifremer.fr/doc/00053/16465/15998.pdf Intercomparison of Three Open-Source Numerical Flumes for the Surface Dynamics of Steep Focused Wave Groups ArchiMer Vyzikas, Thomas; Stagonas, Dimitris; Maisondieu, Christophe; Greaves, Deborah. NewWave-type focused wave groups are commonly used to simulate the design wave for a given sea state. These extreme wave events are challenging to reproduce numerically by the various Numerical Wave Tanks (NWTs), due to the high steepness of the wave group and the occurring wave-wave interactions. For such complex problems, the validation of NWTs against experimental results is vital for confirming the applicability of the models. Intercomparisons among different solvers are also important for selecting the most appropriate model in terms of balancing between accuracy and computational cost. The present study compares three open-source NWTs in OpenFOAM, SWASH and HOS-NWT, with experimental results for limiting breaking focused wave groups. The comparison... Tipo: Text Palavras-chave: Extreme waves; Focused waves; Dispersion; Harmonic analysis; CFD; OpenFOAM; SWASH; HOS. Ano: 2021 URL: https://archimer.ifremer.fr/doc/00665/77755/79880.pdf Ecologie larvaire de l'huître perlière (Pinctada margaritifera, L.), croissance et dispersion dans un lagon d'atoll polynésien ArchiMer Thomas, Yoann. Understanding key factors determining the bentho-pelagic species larval growth and dispersal remains one of the challenges of marine ecology, notably to understand the adult population structure and dynamics. In the present study, we explore this determinism on the development and dispersal of the black-lip pearl oyster (Pinctada margaritifera var. cumingii, Linné 1758) larvae in a French Polynesian atoll lagoon (Ahe, Tuamotu archipelago). Rearing of the pearl oyster for the production of black pearls takes on a major social and economic place in French Polynesia. However, the supply of pearl oyster seed to the farms depends entirely on the natural collection of wild spat of the only one specie P. margaritifera, and spatial and temporal variability of spat... Tipo: Text Palavras-chave: Ecologie larvaire; Hétérogénéité environnementale; Modélisation; Croissance; Dispersion; Huître perlière à lèvres noires; Pinctada margaritifera; Lagon d’atoll; Polynésie française; Larval ecology; Environmental heterogeneity; Modeling; Growth; Dispersal; Black-lip pearl oyster; Pinctada margaritifera; Atoll lagoon; French Polynesia. Ano: 2009 URL: http://archimer.ifremer.fr/doc/00003/11449/7999.pdf Fonctionnement hydrodynamique du bassin de Thau. Validation écologique d’un modèle numerique de circulation (programme Écothau) ArchiMer Millet, B. The wind-driven flow in the closed bassin de Thau is reproduced with a two-dimensional numerical model of horizontal ciruclation using an Alternate Direction Implicit scheme. A stochastic analysis of frequencies on a yearly time scale of the velocity fields computed in the model and a spatial and stochastic treatment of the term (H2 y2), similar to an effective coefficient of horizontal dispersion by shear effect are presented. This approach will allow the delineation, in a stochastic manner, of the main structures of the circulation in the lagoon and the spatial heterogeneity of its ecohydrodynamic features. Two attempts of analogical research are presented, with sorne examples of the spatial structure in the phytoplankton biomass and the map of the... Tipo: Text Palavras-chave: Lagune; Modèle; Circulation; Dispersion; Sédiment; Lagoon; Model; Circulation; Dispersion; Sediment. Ano: 1989 URL: http://archimer.ifremer.fr/doc/00323/43399/43093.pdf Registros recuperados: 38 Primeira ... 1 2 ... Última

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