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Registros recuperados: 29
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Aspectos generales sobre la estructura térmica superficial del mar, de la zona comprendida entre el golfo de Penas y la boca occidental del estrecho de Magallanes OceanDocs
Boré, D.; Barbieri, M.A.; Catasti, V..
This study was carried out within the Project Cimar-Fiordo 2. The general objective was to describe the sea surface temperature in the zone between 46º LS and 52º LS, and from the 73º 52’ LW to the 76º 30’ LW, considering the channel and fjord zone. The analysis was based on satellite images of sea surface temperature. The images used came from the AVHRR radiometer of the NOAA satellite, from the year 1995 to 1998. The cartographic representation and the analysis of the seasonal variability of the sea surface temperature was made using the software of the Geographical Information System (GIS), named IDRISI. The zone was with clouds during all the period of study, mainly in autumn. With the available images it was possible to observe a big difference...
Tipo: Journal Contribution Palavras-chave: Water temperature; Fjords; GIS; Satellite sensing; Radiometers; Surface temperature; Sea water; Thermal structure; Water temperature; Fjords; Radiometers; Sea water.
Ano: 2001 URL: http://hdl.handle.net/1834/1578
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Changes of Water Temperature and Harmful Algal Bloom in the Daya Bay in the Northern South China Sea. OceanDocs
Yu, Jing; Tang, Danling; Wang, Sufen; Lian, Jiansheng; Wang, Youshao.
Economic development around the Daya Bay, China has profoundly affected the marine environment in the bay area in recent years, particularly since the operation of Daya Bay Nuclear Power Station (DNPS) in 1994. This study analyzed the changes of water temperature and harmful algal blooms (HABs) for two periods: 1983-1993 and 1994-2004, using in situ and satellite data. Results showed that yearly mean surface water temperature (SWT) and Chl-a concentration (Chl-a) increased by 1.1 ℃ and 1.9 mg/m3, respectively, after 1994. The monthly occurrence of HAB was found to have increased also. HABs appeared only in spring and autumn before 1994, but occurred all the year round after 1994. SWT, Chl-a and HABs all increased significantly in May. Those changes were...
Tipo: Journal Contribution Palavras-chave: Water temperature; Chlorophylls; Nuclear power plants.
Ano: 2007 URL: http://hdl.handle.net/1834/5860
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Conditionnement artificiel de l'huître Crassostrea gigas ArchiMer
Jorge Eduardo, Chávez Villalba.
In France, 90% of the annual cup oyster (Crassostrea gigas) production comes from larvae caught in the Arcachon and Marennes-Oléron basins. However, the spat catch shows many interannual irregularities and oyster farmers increasingly say they need spat outside of the reproductive period. Thus, the role of hatcheries in Japanese oyster spat production in France is becoming increasingly evident. However, the current state of knowledge about cup oyster reproduction in controlled conditions is limited, and hatchery professionals must confront various problems to optimise treatment of genitors so as to obtain larval breeds in good health and a lengthening of the reproductive season. To respond to this, we have carried out a study on three aspects that seem...
Tipo: Text Palavras-chave: Water temperature; Biochemical studies; Gametogenesis; Breeder conditioning; Larval rearing.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/these-1456.pdf
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Distribución de la densidad fitoplanctónica en una estación fija costera. La Libertad (Ecuador), durante 1989-1993 OceanDocs
Torres, G..
El presente trabajo pretende dar a conocer los resultados de la distribución estacional cuantitativa del fitoplancton (diatomeas y dinoflagelados), y su relación con masas de agua, dadas por temperatura y salinidad, desde 1989 hasta 1993 en una estación fija costera La Libertad, período en el cual se presentó un evento "El Niño" 1991-1992.
Tipo: Journal Contribution Palavras-chave: Phytoplankton; Seasonal distribution; Water temperature; Oceanographic stations; Fixed stations; Biomass; Population density; Biomass; Phytoplankton; Water temperature; Population density; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_16063; Http://aims.fao.org/aos/agrovoc/c_6112.
Ano: 1996 URL: http://hdl.handle.net/1834/2198
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Données écologiques sur quelques groupes planctoniques indicateurs dans le Golfe de Gascogne ArchiMer
Beaudouin, Jacqueline.
Tipo: Text Palavras-chave: Biscay bay; Species seasonal variations; Water temperature; Planktonic indicators.
Ano: 1971 URL: http://archimer.ifremer.fr/doc/1971/publication-2237.pdf
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Estudio de la calidad de las aguas costeras insulares en la Provincia de Galápagos OceanDocs
Rodríguez de Morán, A.; Valencia, M..
El presente trabajo se orienta para conocer la calidad actual de las aguas costeras insulares de cinco Bahías del Archipiélago: Naufragio, Academia, Darwin, Puerto Velasco Ibarra y Puerto Villamil.
Tipo: Journal Contribution Palavras-chave: Water quality; Chemical composition; Salinity; Water temperature; Coastal waters; Oceanic islands; Water quality; Chemical composition; Water temperature; Salinity; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_1794; Http://aims.fao.org/aos/agrovoc/c_16063; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 2000 URL: http://hdl.handle.net/1834/2241
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Estudio de las características físicas y químicas de las aguas de Bahía Chile para el verano austral período 1995-1998 OceanDocs
Valencia T., M..
Se presenta un estudio de las características hidroquímicas de las aguas de Bahía Chile, para los veranos de 1995 y 1998, basado en la distribución horizontal de la concentración de parámetros físicos y químicos determinada en muestras de agua obtenidas en nueve estaciones localizadas en tres perfiles perpendiculares a las costas de la bahía, considerando tanto las aguas de la desembocadura, cuanto la parte central e interior de la misma. Las muestras fueron obtenidas a dos niveles, desde la superficie hasta treinta metros donde la profundidad lo permitió. El análisis efectuado indica la presencia de aguas con temperaturas congruentes con el área y la estación (verano); muy bién oxigenadas, con salinidad un tanto baja como producto del aporte del deshielo...
Tipo: Journal Contribution Palavras-chave: Chemical composition; Chemical analysis; Water temperature; Phosphates; Polar waters; Chemical composition; Water temperature; Phosphates; Http://aims.fao.org/aos/agrovoc/c_1794; Http://aims.fao.org/aos/agrovoc/c_16063; Http://aims.fao.org/aos/agrovoc/c_35986.
Ano: 1998 URL: http://hdl.handle.net/1834/3847
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Estudio químico de las masas de aguas del Pacífico Sudeste (Ruta Guayaquil-Valparaíso), durante un período del evento "El Niño" 1997-1998 OceanDocs
Burgos, L..
Durante la séptima expedición Ecuatoriana a la Antártida (diciembre, 1997 y Marzo, 1998), a bordo del B/I ORION, se realizó investigación oceanográfica en el trayecto Guayaquil-Valparaíso, los días 11 al 19 de diciembre, se colectaron muestras de agua en 14 estaciones para el análisis de nutrientes, oxígeno, temperatura, salinidad, y parámetros biológicos además se recolectó información meteorológica. La información química obtenida de nutriente (Nitrato, silicato y fosfato) y oxígeno disuelto fue relacionada con la temperatura y correlacionada con los diagramas T/S en el ámbito de estudio. Se elaboraron gráficos de nutriente y oxígeno con las masas de agua, estableciendo rangos asociados a cada masa de agua previamente identificada en los diagramas T/S....
Tipo: Journal Contribution Palavras-chave: Chemical oceanography; Water masses; El Nino phenomena; Nutrients (mineral); T/S diagrams; Water temperature; Salinity; Meteorological data; Dissolved oxygen; Cruises; Water temperature; Dissolved oxygen; Chemical oceanography; Salinity; Meteorological data; Http://aims.fao.org/aos/agrovoc/c_16063; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_1516; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_34149.
Ano: 1998 URL: http://hdl.handle.net/1834/2196
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Evaluation and identification of cold-tolerant rice genotypes by cold-water irrigation stress International Rice Research Institute
Jena, K. K.; Jeung, J. U.; Yea, J. D.; Choi, Y. H.; Hwang, H. G; Moon, H. P.; Virk, P. S.; Yanagihara, S.; Mackill, D..
p.54-56
Palavras-chave: Genotypes; Cold tolerance; Cold stress; Water temperature; Irrigation; Agronomic characteristics.
Ano: 2004 URL: http://hdl.handle.net/123456789/774
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Freshwater temperature in the state of Rio Grande do Sul, Southern Brazil, and its implication for fish culture Neotropical Ichthyology
Garcia,Luciano de Oliveira; Copatti,Carlos Eduardo; Wachholz,Flávio; Pereira Filho,Waterloo; Baldisserotto,Bernardo.
In this study we verified data of water temperatures collected by CORSAN-RS from 1996 to 2004 in several cities of the state of Rio Grande do Sul, southern Brazil, and analyzed the possibility of raising the most cultivated fish species in Brazil. The water temperature from 1996 to 2004 was 16 to 28ºC in summer, 17 to 23ºC in fall, 14 to 17ºC (down to 9ºC in the coldest months) in winter and 14 to 21ºC in spring. Native species of this state, such as silver catfish (Rhamdia quelen), traíra (Hoplias malabaricus), dorado (Salminus brasiliensis), pintado (Pimelodus maculatus), as well as carps (family Cyprinidae), are resistant to the low winter temperatures. These species have a lower growth rate in coldest months (winter/spring) but a good development in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish growth; Mortality; Growth; Freshwater fish; Water temperature.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000200016
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Les caractéristiques comparatives des conditions thermiques de l'eau dans la baie du lévrier en 1981 OceanDocs
Bernikov, R G..
Tipo: Journal Contribution Palavras-chave: Water temperature; Hydrobiology; Coastal upwelling.
Ano: 1982 URL: http://hdl.handle.net/1834/4986
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Método para expansão de uma série temporal de temperatura da água a partir de dados do sistema automático de monitoramento de variáveis ambientais (SIMA): aplicação em aquicultura no reservatório de Furnas. Repositório Alice
CARA, B. E. D. de; LUIZ, A. J. B.; NEVES, M. C..
Abstract: This paper describes a method to expand an annual series of water daily temperature to a larger period of time. Data collected for nearly a year by an automatic environmental system (SIMA) at high frequency in time were used to study the relationships of maximum and minimum temperatures of the air with the daily average, as well as the relationship between them and the temperature of water two meters deep. We also found a weather station near and alike and which had a long-term data of air temperature. By means of statistical calculations, we first expanded air temperatures series and subsequently water temperatures for the same period were obtained. Temperature intervals were established respecting the comfort level for the production of fish in...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Dados de alta frequência; Aquicultura; Tilápia nilótica; Água; Temperatura; Análise estatística; Aquaculture; Oreochromis niloticus; Water temperature; Statistical analysis.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/963340
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Monitoreo de las condiciones bio-oceanográficas en la I y II Regiones, año 2002 OceanDocs
Braun, M.; Reyes, H.; Valenzuela, V.; Castillo, J.; Osses, J.; Catasti, V..
El presente documento corresponde al pre-informe final del Proyecto FIP 2002-01 Monitoreo de las condiciones bio-oceanográficas fisico-químicas; la distribución geográfica y abundancia de huevos y larvas de los recursos anchoveta, sardina, jurel y caballa y su variabilidad estacional; y la distribución de los recursos detectados por medio de técnicas hidroacústicas en la I y II Regiones, registradas durante los cruceros estacionales de monitoreo MOBIO 0205, MOBIO 0209, MOBIO 0212 y MOBIO 301, realizados en otoño, invierno y primavera de 2002 y verano de 2003 respectivamente. Entrega además la serie de tiempo mensual generada producto de la ocupación de las estaciones costeras de vigilancia localizadas frente a los puertos de Mejillones, Iquique y Arica...
Tipo: Report Palavras-chave: Physical oceanography; Water temperature; Salinity; Dissolved oxygen; Marine ecology; Seasonal variations; Echo surveys; Geographical distribution; Zooplankton; Physical oceanography; Water temperature; Dissolved oxygen; Geographical distribution; Zooplankton; Salinity; Marine ecology; Http://aims.fao.org/aos/agrovoc/c_5830; Http://aims.fao.org/aos/agrovoc/c_16063; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_4609.
Ano: 2004 URL: http://hdl.handle.net/1834/1728
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Observations on the thermal selection of the pantanal caiman (Caiman crocodilus yacare) hatchlings (Crocodylia: Alligatoridae) BJB
PINHEIRO,M. S.; ANDREOTTI E SILVA,R.; SANTOS,S. A..
Three options of water temperatures in a thermal gradient that changed from 22 to 35°C were offered to Pantanal caiman (Caiman croocodilus yacare) hatchlings. Animals from two nests were submitted to temperatures during 19 days (Nest 1 - 20 caimans caught in the nature hours after hatching), corresponding to 1 to 7 observations periods, and 13 days (Nest 2 - 20 animals obtained by artificial incubation) relative to observation period 8. Caimans remain fasting during experimental period. Hatchlings were allocated in a enclosure containing three styrofoam boxes (120 L) disposed side by side enclosed by wire netting and filled with water to the top. Thus, the animals were free to access the boxes, which temperatures were changed at the end of each observation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caiman; Hatchlings; Pantanal; Thermal selection; Water temperature.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000200016
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Ontogeny and water temperature influences the antiviral response of the Pacific oyster, Crassostrea gigas ArchiMer
Green, Timothy; Montagnani, Caroline; Benkendorff, Kirsten; Robinson, Nick; Speck, Peter.
Disease is caused by a complex interaction between the pathogen, environment, and the physiological status of the host. Determining how host ontogeny interacts with water temperature to influence the antiviral response of the Pacific oysters, Crassostrea gigas, is a major goal in understanding why juvenile Pacific oysters are dying during summer as a result of the global emergence of a new genotype of the Ostreid herpesvirus, termed OsHV-1 μvar. We measured the effect of temperature (12 vs 22 °C) on the antiviral response of adult and juvenile C. gigas injected with poly I:C. Poly I:C up-regulated the expression of numerous immune genes, including TLR, MyD88, IκB-1, Rel, IRF, MDA5, STING, SOC, PKR, Viperin and Mpeg1. At 22 °C, these immune genes showed...
Tipo: Text Palavras-chave: Crassostrea; OsHV-1; Water temperature; Antiviral response; Herpesvirus.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00162/27318/25674.pdf
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Reproduction naturelle de Crassostrea gigas Thunberg dans le bassin de Marennes-Oleron en 1979 et 1981: Aspects biochimiques et energetiques. ArchiMer
Deslous-paoli, Jean-marc; Heral, Maurice; Berthome, Jean-paul; Razet, Daniel; Garnier, Jacqueline.
In summer 1979, the natural reproduction of oysters Crassostrea gigas Thunberg, in Marennes-Oleron basin, produced a large number of juveniles which was not the case in summer 1981. If one compares the evolution of the main constituents of the flesh, one can see that, at the beginning of August, before spawning the male oysters in 1981 contained 6,3% less proteins, 34,2% less lipids and 61,2% less glucids than those in 1979 and respectively 12,3%, 21,3% and 69,8% less as far as females are concerned. The energetic value of ash-free dry flesh of female oysters is nearly the same for the two years whereas for male oysters the value is slightly lower in 1981 than in 1979. The total energetic values of male and female oysters show a slight difference between...
Tipo: Text Palavras-chave: Crassostrea gigas; Seasonal variations; Food availability; Water temperature; Saccharides; Proteins; Lipids; Biochemical composition; Gametogenesis; Spawning; Sexual reproduction.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/1981/publication-1891.pdf
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Seasonal Variatrion of Cymodocea Nodeosa in the Ghar el Melh Lagoon (Tunisia) with reference to insolation, temperature and salinity effects OceanDocs
Sghaier, Y. R.; Zakhama-Sraieb, R.; Charfi-Cheikhrouha, F..
Two sampling stations were selected in order to assess the response of the seagrass to lagoon conditions. Leaf growth was estimated using Zieman method and rhizome production was evaluated by marking rhizome terminals. The vegetative development of C. nodosa inside the lagoon at the limit of its distribution is different from that observed close to the communication channel with the sea. The growth of C. nodosa show a clear unimodal cycle in the two stations reaching maximum leaf development in summer. Shoot density decreased from 915 to 500 shoot m-2 from the communication channel toward the lagoon. The average total biomass varied between 241.6 ± 34 g DW m-2 and 413.8 ± 46 g DW m-2. Leaf plastochrone interval varied seasonally with an annual average of...
Tipo: Journal Contribution Palavras-chave: Salinity; Biomass; Seagrass; Lagoons; Water temperature; Lagoons; Salinity; Biomass.
Ano: 2012 URL: http://hdl.handle.net/1834/5305
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Shell of the Great Scallop Pecten maximus as a high-frequency archive of paleoenvironmental changes - art. no. Q08001 ArchiMer
Chauvaud, Laurent; Lorrain, Anne; Dunbar, Robert; Paulet, Yves; Thouzeau, Gérard; Jean, Frédéric; Guarini, Jean-marc; Mucciarone, David.
We investigate the environmental and biological controls on oxygen isotope ratios in the shells of modern Pecten maximus bivalves collected alive in the Bay of Brest (France). Seasonal delta(18)O profiles, obtained by drilling the daily calcite ridges deposited at the surface of the left valve, were compared with in situ measurements of temperature and salinity. We show that P. maximus delta(18)O values accurately track seasonal variations in bottom water temperature. Shell growth rate has no significant effect on shell delta(18)O values. Our study demonstrates that daily variations in water temperature can be reconstructed within about 0.5 degrees C. Temperatures estimated with the paleotemperature equation established in this study were compared with...
Tipo: Text Palavras-chave: Pecten Maximus; Brittany; Paleoenvironment; Estimation; Daily varition; Water temperature; Isotope; Calcite; Shell; Ëecten maximus; Paleotempérature; Variation saisonnière; Température eau; Strie croissance; Isotope; Coquille.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-643.pdf
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Spawning of migratory fish species between two reservoirs of the upper Uruguay River, Brazil Neotropical Ichthyology
Reynalte-Tataje,David A.; Nuñer,Alex P. O.; Nunes,Michele C.; Garcia,Valquíria; Lopes,Carolina A.; Zaniboni-Filho,Evoy.
This study investigated the migratory fish spawning within the reservoirs of the Machadinho and Itá dams (upper Uruguay River, Brazil) and its relationship to environmental variables. Sampling was conducted in the lotic region of the river in two sites between the dams' reservoirs: Uruguay (main river) and Ligeiro (tributary). Sampling included nine consecutive reproductive periods (RP) spanning the period from 2001 to 2010 and was conducted at night on the water surface using cylindrical-conical plankton nets (0.5 mm mesh); environmental variables were also recorded. The spawning of the migratory species Salminus brasiliensis, Prochilodus lineatus, and Steindachneridion scriptum was registered: S. brasiliensis and P. lineatus spawned in the tributary...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ichthyoplankton; Temporal distribution; Water flow; Water temperature.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400016
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Status and potential of Australian Lates calcarifer culture. ArchiMer
Mackinnon, M.
Lates calcarifer is distributed widely in northern Australia and is important to both commercial and recreational fisheries. There is the research on hatchery production of the species in 1984 and this work is continuing. Hatchery reared fish have been stocked to reservoirs in northern Queensland and have been used in experimental grow-out trials. Fish weaned onto formulated diets by the age of 25 days were reared to marketable size (> 500 g) in freshwater tanks. Despite suboptimal water temperatures the fish reached market size by the age of twelve months. Taste panel analysis showed that the pellet fed fish were of good quality. The sensitivity of growth rates to water temperature was demonstrated in both grow-out trials and reservoir stockings.
Tipo: Text Palavras-chave: Lates calcarifer; Pisces; Fresh water; Fingerlings; Hatcheries; Cage culture; Water temperature; Food conversion; Pellet feeds; Culture tanks; Diets; Growth.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1429.pdf
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