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	Provedor de dados ArchiMer (2) Autor Cai, Wenju (2) Speich, Sabrina (2) Achutarao, Krishna (1) Beal, Lisa (1) Bindoff, Nathaniel L. (1) Blanke, Bruno (1) Bracco, Annalisa (1) Braconnot, Pascale (1) Chen, Dake (1) Collins, Matthew (1) Danabasoglu, Gokhan (1) Dewitte, Boris (1) Farneti, Riccardo (1) Fox-kemper, Baylor (1) Fyfe, John (1) Griffies, Stephen M. (1) Jayne, Steven R. (1) Lazar, Alban (1) Lengaigne, Matthieu (1) Lin, Xiaopei (1) Mais... Palavra-chave Antarctic circumpolar current (1) Climate information (1) Conveyor belt (1) Earth observations (1) In situ measurements (1) Indian ocean (1) Intermediate water (1) Model (1) Ocean climate (1) Ocean modeling (1) Ocean observing system (1) Pacific oceans (1) Satellite observations (1) Thermohaline circulation (1) Tracers (1) Transport (1) Mais... Tipo do documento Text (2) Ano 2019 (1) 2007 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 87 Primeira ... 1 2 3 4 5 ... Última Seasonal variation of microbial population from sediments of Vellar Estuary, South India. ArchiMer Lakshmanaperumalsamy, P; Chandramohan, D; Natarajan, R. A seasonal study on the occurrence and distribution of total aerobic microbial population (TMP), total aerobic heterotrophic bacteria (THB), actinomycetes and fungi in the sediments of Vellar Estuary, South India (11 degree 29'N 79 degree 46'E) was carried out during Jan. to Dec. 1975. Sediment samples were collected at monthly intervals, from 4 stations and analysed microbiologically. In general, bacterial population was found to be dominant followed by actinomycetes and fungi. The max peak for TMP, THB and fungi were recorded in Nov. in all stations. Monsoon season supported TMP, THB and fungi to a high level and it was summer for actinomycetes. Statistical analysis (Kendall's tau) showed a significantly positive correlation among TMP, THB, actinomycetes... Tipo: Text Palavras-chave: Actinomycetes; Population number; Statistical analysis; Seasonal variations; Fungi; Bacteria; Sediment analysis; Microbiological analysis. Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-943.pdf Seasonal variations in photosynthetic irradiance response curves of macrophytes from a Mediterranean coastal lagoon ArchiMer Plus, Martin; Auby, Isabelle; Verlaque, Marc; Levavasseur, Guy. The main photosynthesis and respiration parameters (dark respiration rate, light saturated production rate, saturation irradiance, photosynthetic efficiency) were measured on a total of 23 macrophytes of the Than lagoon (2 Phanerogams, 5 Chlorophyceae, 10 Rhodophyceae and 6 Phaeophyceae). Those measurements were performed in vitro under controlled conditions, close to the natural ones, and at several seasons. Concomitantly, measurements of pigment concentrations, carbon, phosphorous and nitrogen contents in tissues were performed. Seasonal intra-specific variability of photosynthetic parameters was found very high, enlightening an important acclimatation capacity. The highest photosynthetic capacities were found for Chlorophyceae (e.g. Monostroma obscurum... Tipo: Text Palavras-chave: Thau lagoon; Phaeophyceae; Rhodophyceae; Chlorophyceae; Seagrasses; Seasonal variations; Oxygen method; Macrophytes; Light response curve; Photosynthesis. Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-465.pdf Seasonal variations in some physiochemical parameters of the Bonny estuary, Niger delta. OceanDocs Dublin-Green, C.O.. This study is based on eight research cruises carried out on the bonny river system from December 1986-september 1988. Variations in some physico-chemical parameters of water [Transparency, temperature, pH, DO, salinity, conductivity, PO4, NH4 SiO2 and alkalinity] observed at 10 stations located in the main channel of the river are presented. Results showed that salinity, conductivity, pH, DO, and alkalinity exhibited spatial and temporal variations. In general, the upper estuary was slightly acidic while the middle and lower estuary were alkaline .A slight decrease in water temperature with depth was observed in most of the stations. The amplitude of variation in surface and bottom water temperature was generally between 0.5-2oC. Significant salinity... Tipo: Report Palavras-chave: Physicochemical properties; Seasonal variations; Physicochemical properties. Ano: 1990 URL: http://hdl.handle.net/1834/2408 Seasonal variations in some physiochemical parameters of the Bonny estuary, Niger delta. OceanDocs Dublin-Green, C.O.. This study is based on eight research cruises carried out on the bonny river system from December 1986-september 1988. Variations in some physico-chemical parameters of water [Transparency, temperature, pH, DO, salinity, conductivity, PO4, NH4 SiO2 and alkalinity] observed at 10 stations located in the main channel of the river are presented. Results showed that salinity, conductivity, pH, DO, and alkalinity exhibited spatial and temporal variations. In general, the upper estuary was slightly acidic while the middle and lower estuary were alkaline .A slight decrease in water temperature with depth was observed in most of the stations. The amplitude of variation in surface and bottom water temperature was generally between 0.5-2oC. Significant salinity... Tipo: Report Palavras-chave: Physicochemical properties; Seasonal variations; Physicochemical properties; Http://aims.fao.org/aos/agrovoc/c_13330. Ano: 1990 URL: http://hdl.handle.net/1834/2408 Seasonal variations in the heterologous binding of viscacha spermatozoa: A scanning electron microscope study Biocell Aguilera Merlo,Claudia; Muñoz,Estela; Dominguez,Susana; Fóscolo,Mabel; Scardapane,Luis; de Rosas,Juan Carlos. Seasonal changes in the reproductive activity of the adult male viscacha (Lagostomus maximus maximus) were investigated during the annual reproductive cycle. Assays of heterologous in vitro binding between compatible gametes were used to evaluate the ability of viscacha spermatozoa to achieve primary binding during its annual reproductive cycle. Sperm were collected by mincing cauda epididymis in HECM-3 medium and the sperm concentration and motility were evaluated. Cumulus-free and zona-free oocytes obtained from superovulated hamsters were inseminated in vitro with capacitated sperm suspensions, incubated at 37ºC, 5% CO2 for 3 h, and then processed for studies by scanning electronic microscopy. Statistical analysis was used to compare the quantitative... Tipo: Info:eu-repo/semantics/article Palavras-chave: Viscacha (Lagostomus maximus maximus); Spermatozoa; Heterologous binding; Seasonal variations. Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452005000300001 Short term changes in zooplankton community during the summer-autumn transition in the open NW Mediterranean Sea: species composition, abundance and diversity ArchiMer Raybaud, V.; Nival, P.; Mousseau, L.; Gubanova, A.; Altukhov, D.; Khvorov, S.; Ibanez, F.; Andersen, V.. Short term changes in zooplankton community were investigated at a fixed station in offshore waters of the Ligurian Sea (DYNAPROC 2 cruise, September-October 2004). Mesozooplankton were sampled with vertical WPII hauls (200 mu m mesh-size) and large mesozooplankton, macrozooplankton and micronekton with a BIONESS multinet sampler (500 mu m mesh-size). Temporal variations of total biomass, species composition and abundance of major taxa were studied. Intrusions of low salinity water masses were observed two times during the cruise. The first one, which was the most intense, was associated with changes in zooplankton community composition. Among copepods, the abundance of Calocalanus, Euchaeta, Heterorhabdus, Mesocalanus, Nannocalanus, Neocalanus,... Tipo: Text Palavras-chave: Ligurian sea; Wind events; Phytoplankton community; Vertical distributions; Seasonal variations; English channel; Spring bloom; Oregon coast; Variability; Copepods. Ano: 2008 URL: https://archimer.ifremer.fr/doc/00208/31975/30410.pdf Spatial variations at different observational scales and the seasonal distributions of stream macroalgae in a Brazilian subtropical region Rev. Bras. Bot. Krupek,Rogério Antonio; Branco,Ciro Cesar Zanini; Peres,Cleto Kaveski. We examined the relationships between environmental variations in lotic ecosystems with the seasonal dynamics of macroalgae communities at different spatial scales: drainage basin of two rivers (Rio das Pedras and Rio Marrecas), shading (open and shaded stream segments), mesohabitat (riffles and pools), and microhabitats. Data collections were made on a monthly basis between January and December/2007. A total of 16 taxa were encountered (13 species and 3 vegetative groups). All of the biotic parameters (richness, abundance, diversity, equitability, and dominance) were found to be highly variable at all of the spatial scales evaluated. On the other hand, abiotic variables demonstrated differences only at mesohabitat (in terms of current velocity) and shaded... Tipo: Info:eu-repo/semantics/article Palavras-chave: Heterogeneity; Macroalgae; Seasonal variations; Stream. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000300004 The reproductive cycle of the European clam Ruditapes decussatus (L., 1758) in two Portuguese populations: Implications for management and aquaculture programs ArchiMer Matias, Domitilia; Joaquim, Sandra; Matias, Ana Margarete; Moura, Paula; Sousa, Joana; Sobral, Paula; Leitao, Alexandra. The reproductive cycle, as well as its nutrient storage and utilization, of two populations of Ruditapes decussatus from the main production areas of this species: Ria de Aveiro and Ria Formosa Lagoon (Portugal) were studied here over a 24 month period (May 2010-April 2012). The reproductive cycle of both populations of R. decussatus followed an annual cyclicality that comprised a ripe stage in spring followed by a spawning period that began in late spring and extended throughout summer until early autumn. This extended and continuous spawning period may be an advantageous strategy for this species by ensuring a continuous supply of gametes. Moreover, R. decussatus can adopt different reproductive strategies depending on the geographical origin. The... Tipo: Text Palavras-chave: European clam; Ruditapes decussatus; Reproductive cycle; Portuguese populations; Biochemical composition; Seasonal variations. Ano: 2013 URL: http://archimer.ifremer.fr/doc/00152/26292/25461.pdf Time series of ocean measurements. Volume 2 - 1984 OceanDocs Tipo: Book Palavras-chave: Oceanography; Oceanographic data; Oceanography; Oceanographic surveys; Time series analysis; Sea level measurement; Sea level changes; Seasonal variations; Time series analysis; Oceanography; Http://aims.fao.org/aos/agrovoc/c_28778; Http://aims.fao.org/aos/agrovoc/c_12889. Ano: 1985 URL: http://hdl.handle.net/1834/2737 Towards the development of environmental indices for the Namibian shelf, with particular reference to fisheries management. OceanDocs Bartholomae, Ch.; Van der Plas, A.. The Namibian Ministry of Fisheries and Marine Resources has the task of collecting and providing relevant oceanographic information for management of their fisheries. However, quality information is difficult to provide because of the complexity of the processes involved in the Namibian marine ecosystem. Nonetheless, there are oceanographic data available that can contribute to fisheries management by improving the general understanding of important oceanographic processes related to fisheries. The focus of this paper is on the development of simple environmental indices that can serve as a measurement or proxy of the state or intensity of certain important oceanographic processes or variables for temporal comparison. These indices relate to oceanographic... Tipo: Journal Contribution Palavras-chave: Fisheries management; Marine resources; Oceanographic data; Chlorophylls; Upwelling; Spatial variations; Sardine fisheries; Water temperature; El Nino phenomena; Ecosystems; Fish stocks; Surface temperature; Oxygen; Phytoplankton; Biomass; Seasonal variations; Fronts; Perturbations; Commercial fisheries; Catchability; Remote sensing; Chlorophylls; Dissolved oxygen; Environmental impact. Ano: 2007 URL: http://hdl.handle.net/1834/4971 Trophic relationships between benthic or planktonic microphytes and infaunal bivalve molluscs ArchiMer Plantecuny, M; Bodoy, Alain. In order to estimate energetic relationship, microphytic and benthic bivalve levels of a shallow (1.5 m), sandy ecosystem near Marseille (Gulf of Fos, Southern France) were sampled monthly during 1.5 year, in two sites differing by their wave exposure. In the sheltered area, the bivalve Ruditapes decussatus was the dominant species, while another bivalve, Donax trunculus , was found in the open, wave exposed site. Chlorophyll a and primary production of the phytoplankton and the microphytobenthos, as well as population dynamic, growth and biochemical composition of bivalves (lipids, proteins and carbohydrates) were monitored. Tipo: Text Palavras-chave: Ruditapes decussatus; Bivalvia; Periphyton; Phytoplankton; Biochemical composition; Growth; Marine molluscs; Hydrodynamics; Seasonal variations; Primary production; Trophic relationships. Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1528.pdf Variabilidad estacional e inter-anual en estaciones a 10 millas de la costa en el periodo 2004-2008 OceanDocs Cuadra, T. de la. Se presenta un análisis de los datos oceanográficos (físicos y químicos) y meteorológicos, registrados en tres estaciones localizadas a 10 millas fuera de la costa del Ecuador: estación Esmeraldas ubicada en 104.8 N y 7944.3 W, estación Punta Galera ubicada en 052.5 N y 8012.2 W, y la estación Puerto López ubicada en 135.4 S y 8059.4 W. Los resultados del análisis indican en términos generales, una mayor variabilidad en los 30-50 m de profundidad durante el período 2004-2008. Sugiere además que los años 2007 y 2004 habrían sido fríos; y que el 2006 y 2008 habrían sido cálidos. El análisis de varianzas (ANOVA) mostró una significativa variabilidad interanual en la estación de Pta. Galera (F(2,24)=17.705 p<0.05), y (F(4,40)=3.63 p<0.05) en la... Tipo: Journal Contribution Palavras-chave: Seasonal variations; Ocean surface temperature; Oceanographic data; El Nino phenomena; Anomalies. Ano: 2009 URL: http://hdl.handle.net/1834/4785 Variabilité saisonnière des flux biogéochimiques dans l'écosystème d'upwelling du Benguela sud OceanDocs Koné, Vamara; Koné, Yéfanlan José-Mathieu. Les écosystèmes planctoniques marins sont soumis à des contraintes internes et externes qui influent sur leur dynamique. Celles-ci vont agir au niveau des processus éco physiologiques, biogéochimiques et comportementaux des organismes en présence. L'intégration de ces processus sous forme de système d'équations différentielles aboutit à des modèles permettant la stimulation de la dynamique et du comportement global de l'écosystème considéré. Les écosystèmes sont également contrôlés par les contraintes hydrodynamiques.Leur approche se fera grâce à des modèles couplés physique/biogéochimique. L'utilisation d'un modèle couplé qui prend en compte à la fois les processus dynamiques de la circulation océanique et les bases de l'activité biologique, permet une... Tipo: Journal Contribution Palavras-chave: Seasonal variations; Upwelling. Ano: 2010 URL: http://hdl.handle.net/1834/5772 Variability in diel and seasonal in situ metabolism of the tropical gastropod Tectus niloticus ArchiMer Lorrain, A.; Clavier, J.; Thebault, J.; Tremblay-boyer, L.; Houlbreque, F.; Amice, E.; Le Goff, M.; Chauvaud, L.. Researchers often use metabolic measurements in the field over narrow time periods to estimate an organism's metabolism over large time scales. Here, we measured in situ respiration, calcification and excretion rates of the tropical gastropod Tectus niloticus L. through benthic chamber experiments. Our samples spanned a 21 h time frame and were taken during both the warm and cool seasons. We assessed diel and seasonal variability in metabolic rates, as well as the effect of individual size and the contribution of shell epi-and endobionts. Our results show that metabolic rates vary through time at both diel and seasonal scales, as measured fluxes for respiration and calcification were significantly higher at night during the warm season. This nocturnal... Tipo: Text Palavras-chave: Gastropod; Seasonal variations; Diel variations; Size; Carbon fluxes; CO2; CaCO3; New Caledonia. Ano: 2015 URL: https://archimer.ifremer.fr/doc/00256/36675/39633.pdf Variación estacional de la posición del frente ecuatorial y su efecto sobre la fertilidad de las aguas superficiales ecuatorianas OceanDocs Trejos de Suescum, R.; Okuda, T.; Valencia T., M.; Rodríguez, A.. En este trabajo se analiza una posible correlación entre las condiciones meteorológicas y los patrones oceanográficos en las aguas costeras ecuatorianas, especialmente en relación con la ubicación del Frente Ecuatorial. Tipo: Journal Contribution Palavras-chave: Water surface temperature; Seasonal variations; Oceanic fronts. Ano: 1983 URL: http://hdl.handle.net/1834/2094 Variación estacional de las características químicas de las aguas ecuatoriales subsuperficiales al oeste de las Islas Galápagos en el área de ocurrencia de la corriente de Cromwell (1988-2002) OceanDocs Burgos, L.; Palacios, C.. Este estudio se lo realizó al oeste de las Islas Galápagos de los diferentes cruceros oceanográficos realizados desde 1988 hasta el 2002, con el propósitoo de conocer las características hidroquímicas de las Aguas Ecuatoriales Subsuperficiales (AESS), las cuales se estima mantienen relación con el flujo y aporte de la Corriente de Cromwell que tiene su mayor incidencia en esta área y su comportamiento estacional frente a los cambios climáticos en época húmeda (Marzo-Mayo) y seca (Agosto-Septiembre). Tipo: Journal Contribution Palavras-chave: Seasonal variations; Chemical oceanography; Nutrients (mineral); Thermohaline circulation; Dissolved oxygen; Multiship expeditions; Dissolved oxygen; Chemical oceanography; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_1516. Ano: 2002 URL: http://hdl.handle.net/1834/2234 Variación estacional de las especies del microbentos de la Bahía Manta en la costa ecuatoriana, durante 2011 OceanDocs Gualancañay, E.. Durante la estación lluviosa (marzo 2011), las especies identificadas de la microfauna bentónica en el área de la bahía de Manta son: Bulimina pulchella, Buliminella elegantissima, Cibicides bertheloti, F. boueana, Nonion pizarrense, Quinqueloculina lamarckiana, Rotalia beccarii, Lagena striata y la única especie de la microflora béntica fue Coscinodiscus perforatus y corresponden a la provincia zoogeográfica panameña propuesta por Boltovskoy (1965) y confirmada por Boltosvskoy y Gualancañay (1975) y Gualancañay (1986). Durante la fase seca (septiembre 2011), la microflora béntica estuvo representada por dos especies de diatomeas bénticas: Cocinodiscus perforatus y Polymixus coronalis. En cambio la microfauna bentónica se la halló distribuida en el área de... Tipo: Journal Contribution Palavras-chave: Seasonal variations; Microorganisms; Benthos; Diatoms; Biogeography; Rainy season; Dry season. Ano: 2012 URL: http://hdl.handle.net/1834/4708 Variación estacional del fitoplancton en una estación fija en el estero del Muerto durante 1999-2000-2001 OceanDocs Tapia, M.E.. El objetivo del presente estudio es conocer la variación estacional de las especies del fitoplancton y su relación con las condiciones ambientales durante el período en estudio. Tipo: Journal Contribution Palavras-chave: Seasonal variations; Phytoplankton; Chlorophylls; Diatoms; Environmental conditions; Cell counters; Estuaries; Fixed stations; Marshes; Biomass; Phytoplankton; Estuaries; Biomass; Chlorophylls; Diatoms; Environmental conditions; Marshes; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_1577; Http://aims.fao.org/aos/agrovoc/c_32657; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_4631. Ano: 2006 URL: http://hdl.handle.net/1834/2310 Variación estacional del zooplancton en el sector estuarial de la laguna Mar Chiquita. Su relación con algunas variables ambientales. OceanDocs Firpo, C.. El zooplancton de lagunas costeras se caracteriza por su baja diversidad y la dominancia de algunas especies que toleran sus condiciones ambientales cambiantes. La laguna costera Mar Chiquita está ubicada a los 37º32'S - 37º45’S y 57º19’-57º26’ W, posee un cuerpo lagunar de escasa profundidad y un canal por el cual se conecta con el mar, que posee características estuariales. Dada la escasa información referida al zooplancton de esta laguna el presente trabajo tiene como objetivo describir la taxocenosis del zooplancton, las variaciones estacionales de la abundancia y diversidad y la relación de dichas variaciones con la salinidad y temperatura, para dos estaciones ubicadas en el sector estuarial. Los muestreos mensuales se realizaron en dos estaciones... Tipo: Theses and Dissertations Palavras-chave: Zooplankton; Seasonal variations; Environmental conditions; Abundance; Community composition; Brackishwater environment; Coastal lagoons; Zooplankton; Environmental conditions; Coastal lagoons. Ano: 2002 URL: http://hdl.handle.net/1834/3911 Variación hidroquímica de la zona de afloramiento alrededor de las Galápagos OceanDocs Trejos de Suescum, R.; Valencia, M.. El presente trabajo establece la variación estacional y geográfica del comportamiento de los diferentes estratos verticales en las zonas estudiadas, en septiembre de 1985 y febrero de 1986, mediante el análisis de los diferentes parámetros físicos y químicos. Se establece la presencia de aguas ecuatoriales sub-superficiales aflorando hacia la capa superficial, en mayor intensidad en septiembre de 1985 y en mínima actividad, en febrero de 1986; manifestándose así la variación estacional en la actividad de la surgencia de la zona. Tipo: Journal Contribution Palavras-chave: Chemical oceanography; Equatorial upwelling; Seasonal variations; Chemical oceanography; Http://aims.fao.org/aos/agrovoc/c_1516. Ano: 1986 URL: http://hdl.handle.net/1834/2153 Registros recuperados: 87 Primeira ... 1 2 3 4 5 ... Última

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