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Registros recuperados: 40
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Deutungsversuch der Entstehung der “Brisa”, eines föhnartigen Fallwindes der nordwestlichen Sierra Nevada de Santa Marrta, Kolumbien OceanDocs
Herrmann, R..
Al este de Santa Marta se extiende, entre la cadena montañosa costera de la Sierra Nevada y la Sierra propiamente tal, un valle orientado de este a oeste, el cual queda dividido, por una línea divisoria de las aguas, en el valle del río Manzanares al oeste y el Valle del río Piedras al este. Bajo condiciones del tiempo cuando se presenta claramente la inversión del Passat, a alturas de 1400 a 1800 metros, se origina en este valle un viento descendiente semejante al Föhn, llamado "la Brisa", de extraordinaria violencia. A menudo, junto a la "Brisa", hay procesos adiabáticos húmedos y secos, eventualmente acompañado de una "Föhnmauer". Para la formación de la "Brisa" se requiere de una corriente Passat fría establemente estratificada, bajo una clara...
Tipo: Journal Contribution Palavras-chave: Environmental conditions; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1970 URL: http://hdl.handle.net/1834/3380
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La caballa (Scomber japonicus) y las condiciones del ambiente en elárea "El Rincón" 39°40'-41°30'S del Mar Argentino. Septiembre 2000 OceanDocs
Perrotta, R.G.; Viñas, M.D.; Madirolas, A.; Reta, R.; Akselman, R.; Castro Machado, F.; Garciarena, A.D.; Macchi, G.J.; Moriondo Danovaro, P.; Llanos, V.; Urteaga, J.R..
Between September 1st and 6th a research cruise was carried out in the Buenos Aires shelf area of "El Rincon" 39°40'-41°30'S, Argentine Sea SW Atlantic. The total area studied was 2,527.8 nautical mile2. Knowledge of the commercial fleet location at the time of the survey allowed to intensify sampling in a 'miniarea' of 52,8 nautical mile2. The acoustic assessment of chub mackerel (Scomber japonicus) biomass was 49,511.9 t, 94 of which corresponded to this last area. Fish samples coming from fishing trawls included only adult individuals of 240-460 mm total length (TL) and ages ranging 2-11 years. The limit age was estimated at 13 years and natural and total mortality rates at 0.23 and 0.54, respectively. Oceanographic conditions were those typical of the...
Tipo: Journal Contribution Palavras-chave: Population characteristics; Echo surveys; Mackerel fisheries; Fishery oceanography; Biomass; Environmental conditions; Fishery oceanography; Biomass; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_2938; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2003 URL: http://hdl.handle.net/1834/2418
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Hidrología y condiciones ambientales que determinan la proliferación de dinoflagelados causantes de marea roja en la Bahía de Mazatlán, Sin., México OceanDocs
Alonso, R..
El presente estudio se llevó a cabo con el propósito de conocer algunas de las condiciones hidrológicas y ambientales presentes durante la formación, el desarrollo y la terminación de eventos de “marea roja” en la temporada invierno-primavera en la bahía de Mazatlán, ello con el interés de explicar su origen. Los cambios de temperatura y salinidad a mediados de marzo del 2000, provocaron el aumento de la densidad del agua (-t) de manera significativa, coincidiendo con el inicio de la temporada de “mareas rojas” en el período de estudio. Las condiciones hidrológicas, durante el desarrollo de estos eventos, estuvieron enmarcadas por condiciones de alta estratificación de la columna de agua, lo cual fue corroborado por la aplicación de varios índices que...
Tipo: Theses and Dissertations Palavras-chave: 972; Red tides; Environmental conditions; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2004 URL: http://hdl.handle.net/1834/3446
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Características ambientales, reproducción y alimentación de la merluza (Merluccius hubbsi)y la anchoíta (Engraulis anchoita)en su habitatreproductivo patagónico. Síntesis y perspectivas OceanDocs
Sabatini, M..
Fish recruitment seems to be influenced by environmental variability;the plankton would act as a link between both processes. While environmental variability can be explained in terms of physical forcing, recruitment variability is partly determined by the survival of early larvae. In this review, the available information on hydrography and plankton in relation to reproduction and feeding of hake (Merluccius hubbsi)and anchovy (Engraulis anchoita)in the Patagonian Argentine Sea, SW Atlantic spawning ground was summarized and integrated. The objective was to assess what is actually known about the environmental and planktonic features of the region that may have an effect on the recruitment of both species. In the Patagonian spawning ground, detection, in...
Tipo: Journal Contribution Palavras-chave: Environmental conditions; Nursery grounds; Spawning grounds; Feeding behaviour; Shelf fronts; Feeding behaviour; Environmental conditions; Nursery grounds; Spawning grounds; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_25438; Http://aims.fao.org/aos/agrovoc/c_7277.
Ano: 2004 URL: http://hdl.handle.net/1834/1440
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Evaluación hidroacústica de jurel en la región oceánica, de la I y II Regiones OceanDocs
Córdova, J.; Correa, V.; Hernández, C.; Letelier, J.; Reyes, H.; Ramirez, N.; Catasti, V.; Valenzuela, V.; Bocic, V..
El presente informe contiene los resultados de la cuantificación de la biomasa por hidroacústica del jurel en la zona norte, la distribución e indicadores biológicos del jurel, las condiciones ambientales y las relaciones entre éstas y la distribución del recurso. El crucero de investigación se realizó entre el 2 de noviembre y el 5 de diciembre del año 2006. La prospección abarcó el área desde Arica (18º 20’ S) a Antofagasta (23º 50’ S), desde las 5 a 200 mn. Este estudio se llevó a cabo con el B/C Abate Molina operado por el Instituto de Fomento Pesquero (IFOP) y de propiedad de Subsecretaría de Pesca.
Tipo: Report Palavras-chave: Stock assessment; Biomass; Echo surveys; Environmental conditions; Geographical distribution; Stock assessment; Biomass; Geographical distribution; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2007 URL: http://hdl.handle.net/1834/1851
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Variación espacial de la biodiversidad mesozooplantónica en un sector de la plataforma costera bonaerense (34°-41° S) OceanDocs
Cepeda, G..
En las últimas décadas ha crecido la conciencia a nivel mundial de que la biodiversidad en el océano está sufriendo importantes alteraciones debido a la actividad humana y al cambio climático global, y de que estas alteraciones en muchos casos son irreversibles. Por tal motivo diversos autores señalan la necesidad de enfatizar los estudios de biodiversidad en todos los ambientes marinos (Angel, 1991; Lasserre, 1991; Gray, 2001). Actualmente se están realizando grandes esfuerzos a nivel internacional para incrementar el conocimiento de la diversidad, distribución y abundancia de la vida marina en general (Proyecto Census of Marine Life; www.coml.org) y del zooplancton en particular (Proyecto Census of Marine Zooplankton; www.cmarz.org). La biodiversidad de...
Tipo: Theses and Dissertations Palavras-chave: Zooplankton; Environmental conditions; Hydrography; Abundance; Assemblages; Identification keys; Geographical distribution; Geographical distribution; Zooplankton; Environmental conditions; Hydrography; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_3727.
Ano: 2006 URL: http://hdl.handle.net/1834/2951
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Evaluación del stock desovante de anchoveta en la I y II Regiones, año 2004, (Fase 1) OceanDocs
Braun, M.; Reyes, H.; Pizarro, M.; Saavedra, J.; Catasti, V.; Claramunt, G.; Díaz, E..
El informe contiene los resultados correspondientes al desarrollo del crucero Módulo Huevos y Módulo Adultos del proyecto FIP 200-04-1. De conformidad con la metodología planteada en la propuesta técnica y con el fin de estimar en esta primera fase algunos de los parámetros biológicos aplicables para el Método de Producción de Huevos, a saber: proporción sexual y peso promedio estimado de hembras maduras, además de la determinación de las zonas de distribución y abundancia de huevos y su asociación con las condiciones oceanográficas, se realizaron los respectivos muestreos para el recurso anchoveta, durante el período de máxima actividad reproductiva del año 2004.
Tipo: Report Palavras-chave: Fish eggs; Abundance; Geographical distribution; Sex ratio; Environmental conditions; Geographical distribution; Sex ratio; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2005 URL: http://hdl.handle.net/1834/1813
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Biologia reproductiva de la saraquita Ramnogaster arcuata (Jenyns, 1842) del estuario del Rio de la Plata. OceanDocs
Rodrigues, K.A..
The reproductive biology of Ramnogaster arcuata inhabiting waters of the Rio de la Plata estuary (Argentina - Uruguay) was studied by using macroscopic and histological analysis of ovaries. R. Arcuata specimens were collected from two research cruises of the National Institute of Fisheries Research and Development (INIDEP) carried out in June 1998 and June 1999. During these surveys, bottom salinity and temperature data were also registered. In addition, information about annual catches of this species in the Rio de la Plata, obtained from different INIDEP cruises performed during the last ten years, was analyzed. During winter, a prevalence of R. arcuata individuals was observed in the Rio de la Plata estuary. In summer, this species apparently moves...
Tipo: Theses and Dissertations Palavras-chave: Sexual reproduction; Ovaries; Fecundity; Spawning seasons; Histology; Fish eggs; Oocytes; Environmental conditions; Ovaries; Sexual reproduction; Fecundity; Oocytes; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_26876; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_29343; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2005 URL: http://hdl.handle.net/1834/1485
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Edad, crecimiento e influencia del ambiente en la distribución de Paralichthys patagonicus en el Sistema Costero del Atlántico Sudoccidental ( 34º-41ºS) OceanDocs
Riestra, C.M..
La edad, el crecimiento y la influencia del ambiente en la distribución estacional (invierno y primavera) de las clases de edad de Paralichthys patagonicus fueron estudiadas en el Sistema Costero del Atlántico Sudoccidental (SCAS) (34º-41ºS). Para determinar la edad se analizaron los otolitos sagittae provenientes de 1402 ejemplares colectados en otoño-invierno (n = 695) y en primavera-verano (n = 707) en campañas de investigación y desembarque comercial realizados entre el 2005 y 2009. En cada ejemplar se determinó largo total, peso, sexo. La validación de la formación de los anillos de crecimiento se realizó mediante el análisis mensual del borde del otolito. La precisión de las lecturas se evaluó a través del índice de precisión, coeficiente de...
Tipo: Theses and Dissertations Palavras-chave: Age determination; Growth; Environmental conditions; Geographical distribution; Coastal waters; Geographical distribution; Age determination; Growth; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_24110; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2010 URL: http://hdl.handle.net/1834/4065
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Vulnerability of Water Resources to Environmental Change in Southern Africa. A report for the Pan African START Secretariat and UNEP. OceanDocs
Beekman, H.E.; Saayman, I.; Hughes, S..
The availability and access to water strongly influences patterns of economic growth and social development (Alan, 2002). In this regard, the Southern African region faces considerable challenges in meeting the social and economic needs of its populations (Hirji et al., 2002). It has become increasingly important that water resource development takes place in the context of integrated water resource management (IWRM) with its main principles of equity (regarding access), efficiency (economic) and sustainability (environment).
Tipo: Report Palavras-chave: Water resources; Environmental conditions; Climatic change; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_1666.
Ano: 2003 URL: http://hdl.handle.net/1834/352
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Biología reproductiva comparada de especies de la familia Sciaenidae en aguas del Río de la Plata y Costa Bonaerense OceanDocs
Militelli, M.I..
In the Argentine Sea (SW Atlantic), particularly in the Bonaerense Coastal Zone there are two frontal zones, the waterfront area of the Rio de la Plata and the southern area of the province called El Rincón. The fauna of the Bonaerense Coastal Area has its own characteristics and in the case of fish is defined by dominant species, as is the whole of Sciaenidae family composed of seven species: white mouth croaker (Micropogonias furnieri), striped weakfish (Cynoscion guatucupa), king weakfish (Macrodon ancylodon), black drum (Pogonias cromis), Argentine croaker (Umbrina canosai), drum (Paralonchurus brasiliensis) and southern kingfish (Menticirrhus americanus). In the present work is discussed in a comparative way various aspects of the reproductive cycle...
Tipo: Theses and Dissertations Palavras-chave: Brackishwater fish; Reproduction; Spawning grounds; Coastal waters; Fronts; Environmental conditions; Histology; Reproduction; Spawning grounds; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2007 URL: http://hdl.handle.net/1834/3549
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Influencia del aporte fluvial en la zona marino costera suroccidental del Golfo de Batabanó, Cuba. OceanDocs
Piñeiro, Roberto.
An assessment of the environmental quality in western Gulf of Batabanó, southern coast of Pinar del Río province, Cuba and its relationship with the reduction of freshwater supply by rivers is presented. Main characteristics of natural factors are analyzed, such as river supply to the coast, water temperature, salinity, dissolved oxygen, turbidity, pH, nutrients and organic nitrogen coal in sediments. Besides, submarine vegetation and general conditions are also analyzed. River supply of water was estimated in 1860412,24 m3/day, value which is only 20 % of what it used to be, therefore salinity has increased (> 35 ‰).and dissolved oxygen concentrations are lower (2.8-5.5 mg/l). Ammonia concentration are very high (> 50.0 μg/l) as well as higher...
Tipo: Journal Contribution Palavras-chave: Freshwater ecology; Coastal zone; Environmental conditions; Freshwater ecology; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_3104; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2006 URL: http://hdl.handle.net/1834/2939
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Flota costera Argentina: antecedentes y situación actual OceanDocs
Lasta, C.A.; Ruarte, C.O.; Carozza, C.R..
Historic records of the Argentine coastal fleet (SW Atlantic), their evolution and present situation were analyzed. Coastal fishing was characterized and, according to ecologic and environmental parameters,divided into bonaerense and patagonic areas. Fleets participation in the coastal fisheries of the Province of Buenos Aires and characteristics of coastal fishing fleets of the different Argentinian harbours were analyzed.
Tipo: Book Section Palavras-chave: Fishing vessels; Coastal fisheries; Landing statistics; Environmental conditions; Historical account; Gadoid fisheries; Fishing vessels; Coastal fisheries; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2001 URL: http://hdl.handle.net/1834/2589
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Evaluación hidroacústica del reclutamiento de anchoveta y sardina común entre la V y X Regiones, año 2003 OceanDocs
Saavedra, A.; Gálvez, P.; Barria, P.; Espejo, M.; Barbieri, M.A.; Núñez, S.; Ortiz, J.; Torres, P.; Véjar, F.; Molina, E.; Cerna, F.; López, A.A.; Bustos, L..
Se presentan los resultados de la evaluación acústica de la biomasa, abundancia y distribución espacial; oferta ambiental de alimento, y las condiciones oceanográficas físicas asociadas a la anchoveta (Engraulis ringens) y sardina común (Strangomera bentincki) en el período de reclutamiento de enero del año 2004 entre Topocalma (33º 50' S) y Punta Galera (40º 00' S).
Tipo: Report Palavras-chave: Biomass; Abundance; Geographical distribution; Environmental conditions; Stock assessment; Echo surveys; Biomass; Geographical distribution; Stock assessment; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2004 URL: http://hdl.handle.net/1834/1738
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Patrones de distribución espacio-temporal de los estadíos embrionarios y larvales de la anchoíta (Engraulis anchoita Hubbs & Marini) a micro y macro-escala. Su relación con la supervivencia OceanDocs
Sánchez, R.P..
This dissertation is focused on the study of implications of spatial patterns on survival of eggs and larvae and subsequent recruitment of the SW Atlantic anchovy, Engraulis anchoita. The study of distribution patterns is encompassed within the conceptual framework of the analysis of reproductive strategies of marine bony fish, as adaptations that enable them to cope with and actively exploit environmental variability, regulating their abundance and avoiding extinction. The SW Atlantic anchovy, is ideally suitable for studies on reproductive biology and recruitment on a comparative basis. Its spawning and nursery grounds are located in very diverse ecosystems. This variety refers to their physico-chemical properties, carrying capacity, the influence of...
Tipo: Theses and Dissertations Palavras-chave: Fish eggs; Fish larvae; Recruitment; Ichthyoplankton; Biomass; Reproduction; Developmental stages; Mortality; Stock assessment; Environmental conditions; Biomass; Developmental stages; Stock assessment; Fish larvae; Reproduction; Mortality; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2230; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_4945; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1995 URL: http://hdl.handle.net/1834/1491
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Las condiciones oceanográficas en el área marplatense (37° 00' S-38° 24' S) y su relación con la distribución de la caballa (Scomber japonicus). Octubre-noviembre de 1999 OceanDocs
Reta, R.; Perrotta, R.G.; Garciarena, A.D..
Results obtained during a research cruise carried out along the coastal area of Mar del Plata (Buenos Aires, Argentina) in November 1999 are presented. The objective of the research cruise was to estimate chub mackerel (Scomber japonicus) abundance with acoustic methods and establish its relation to the hydrographic conditions. The information gathered was complemented with data of catches obtained by a commercial vessel that operated simultaneously in the study area. Environmental data from other research cruises and satellite information were also taken into account to obtain contemporary sea surface temperature and wind speed and direction data. The main species of catches of the research cruise and commercial vessel were horse mackerel (Trachurus...
Tipo: Journal Contribution Palavras-chave: Environmental conditions; Oceanic fronts; Wind fields; Coastal fisheries; Marine environment; Marine environment; Environmental conditions; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_1696.
Ano: 2009 URL: http://hdl.handle.net/1834/3460
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Producción estacional de Oithona nana (Copepoda: Cyclopoida) en aguas costeras de Argentina OceanDocs
Temperoni, B..
Oithona nana (Copepoda: Cyclopoida)is a widely-distributed neritic species, which often comprises up to 90 percentage of the zooplankton in many coastal areas. This small copepod plays an important role as a dominant prey in the diet of Engraulis anchoita larvae, which is a main component of major ecological relevance in the pelagic food webs of the Argentine Sea (SW Atlantic Ocean). The objective of this study was to estimate, for the first time, the seasonal variation of O. nana secondary production in a temperate region: coastal waters off Buenos Aires province, Argentina, at the EPEA Station (Estación Permanente de Estudios Ambientales, (38°28' S-57°41' W). Zooplankton samples (N=14)were taken by oblique tows of a Minibongo net (mouth diameter: 0.18 m;...
Tipo: Theses and Dissertations Palavras-chave: Secondary production; Coastal waters; Zooplankton; Seasonal variations; Abundance; Environmental conditions; Zooplankton; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2008 URL: http://hdl.handle.net/1834/3131
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Establishment, spread and impact of Neochetina spp. weevils (Coleoptera: Curculionidae) on Water Hyacinth in Lake Victoria, Kenya OceanDocs
Njoka, S.W.; Ochiel, G.S.; Mailu, A.M.; Gitonga, W..
The Kenya Agricultural Research Institute imported 12,300 curculionid weevils (Neochetina spp.) from diverse sources, for biological control of water hyacinth in Lake Victoria, as part of the World Bank-funded Lake Victoria Environmental Management Project in East Africa. In addition to the rearing and quarantine facility at Muguga, a second rearing facility was established in 1996 at Kibos, near Lake Victoria. The Kibos rearing facility and two community rearing facilities at the lakeshores, have produced approximately 100,000 adult weevils and 42,000 weevil eggs over a three-year period. Since January 1997, some 73,500 Neochetina weevils have been released at 29 sites and an additional 10,000 redistributed at several sites. Visual observations and...
Tipo: Proceedings Paper Palavras-chave: Environmental conditions; Environmental effects; Environmental protection; Inland waters; Biological control; Environmental conditions; Environmental protection; Inland waters; Water hyacinth; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_15898; Http://aims.fao.org/aos/agrovoc/c_3876; Http://aims.fao.org/aos/agrovoc/c_15267.
Ano: 2001 URL: http://hdl.handle.net/1834/1283
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Evaluación hidroacústica del recurso jurel entre la V y X Regiones, año 2003 OceanDocs
Córdova, J.; Barbieri, M.A.; Espejo, M.; Núñez, S.; Ortiz, J.; Torres, P.; Bustos, L.; Véjar, F.; Catasti, V.; Valenzuela, V..
El presente informe contiene los resultados de la cuantificación de la biomasa por hidroacústica del jurel (Trachurus murphyi) en la zona centro-sur, la distribución e indicadores biológicos del jurel, las condiciones ambientales y las relaciones entre éstas y la distribución del recurso.
Tipo: Report Palavras-chave: Biomass; Population number; Echo surveys; Environmental conditions; Vertical distribution; Geographical distribution; Biomass; Geographical distribution; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2004 URL: http://hdl.handle.net/1834/1731
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Etude des polluants chimiques (Cu, Fe, Zn, Cd et Hg) dans les moules (<Perna perna>) prélevées au niveau de la baie du Lévrier. OceanDocs
Dartige, A.Y..
Ce travail a pour objectif de déterminer le niveau de contamination des produits halieutiques mauritaniens. Pour cela, nous avons étudié les polluants chimiques (Cu, Fe, Zn, Cd et Hg) dans des moules (<Perna perna>) prélevées au niveau de la baie du Lévrier en Mauritanie sur une période de quatre mois (novembre 1998 à février 1999). Sur les 400 échantillons analysés les moyennes de concentrations trouvées restent faibles par rapports à celles trouvées dans d'autres zones peu polluées (Amiard et al. 1986b). Ce qui n'est pas le cas du cadmium qui présente des valeurs plus élevées, phénomène fréquemment rencontré le long de la côte ouest africaine (Sidoumou et al. 1992). Par ailleurs, dans cette présente étude il apparaît que les moules de petites...
Tipo: Other Palavras-chave: Chemical analysis; Copper; Environmental conditions; Iron; Mercury; Size; Zinc; Copper; Iron; Environmental conditions; Mercury; Size; Zinc; Http://aims.fao.org/aos/agrovoc/c_1868; Http://aims.fao.org/aos/agrovoc/c_3950; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_4751; Http://aims.fao.org/aos/agrovoc/c_7093; Http://aims.fao.org/aos/agrovoc/c_8517.
Ano: 1999 URL: http://hdl.handle.net/1834/1225
Registros recuperados: 40
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