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Registros recuperados: 19
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Briozoos cheilostomados del Caribe colombiano OceanDocs
Florez-Romero, P.; Montoya-Cadavid, E.; Reyes-Forero, J.; Santodomingo, N..
El orden Cheilostomatida es el grupo de briozoos marinos vivientes más diverso de la actualidad, siendo común encontrar sus especies en todos los ecosistemas marinos del mundo. Sin embargo, la información del grupo en Colombia es escasa y se restringe a pocas localidades. Con la iniciativa de explorar la biodiversidad de los fondos blandos y complementar los inventarios de fauna marina en Colombia, se llevó a cabo la campaña INVEMAR-Macrofauna II, realizada en marzo de 2001, en la cual se recolectaron muestras a lo largo del Caribe colombiano sobre la plataforma continental y el talud superior entre 20 y 500 m de profundidad. Durante la expedición se encontraron 62 especies de cheilostomados pertenecientes a 39 familias, de las cuales 36 fueron primeros...
Tipo: Journal Contribution Palavras-chave: Biodiversity; Continental shelves; Biodiversity; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_33949; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2007 URL: http://hdl.handle.net/1834/3478
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Ciclo anual y variabilidad de baja frecuencia de la temperatura superficial del Mar en el Océano Atlántico Sudoccidental OceanDocs
Martínez Avellaneda, N..
Se estudia el ciclo estacional y la variabilidad de baja frecuencia en el Oceano Atlantico SO, analizando 15 anos (ene.1985-dic. 1999)de observaciones satelitales de temperatura superficial del mar (TSM). Los campos de la TSM tienen una resolucion temporal de 2 dias y espacial de 18km y fueron derivados de observaciones del sensor Advanced Very High Resolution Radiometer de la National Oceanic and Atmospheric Administration (NOAA, EEUU). Se realizo un ajuste con una regresion de cuadrados minimos para los armonicos anual y semianual. Los ajustes para todos los puntos de grilla del area de estudio contabilizaron entre el 70. Y el 95 de la variabilidad de la TSM, dependiendo de la region. La amplitud estimada del ciclo estacional varia entre 5 degree C y...
Tipo: Theses and Dissertations Palavras-chave: Annual variations; Continental shelves; Seasonal variations; Surface temperature; Satellite sensing; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2005 URL: http://hdl.handle.net/1834/2828
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Coral bank obstructions to trawling in the middle to outer continental shelf east and west of Lagos. OceanDocs
Awosika, L.F..
The continental shelf east and west of Lagos [long.2o.04.00E to long.4o 00’.00”E] is narrow shelf ranging in width between 25 to 30 kilometers. Echograms from several NIOMR’s cruises reveal the presence of some isolated and in some cases continuous bands of dead Holocene coral banks, within the middle to outer continental shelf [40-120m depth]. The most prominent of these structures are ones occurring between 75-100m of water and running almost parallel to the coastline. The dead coral structures are non-reef forms. They are found either as continuous Bands of rough bottom with width ranging between, 100 to 3,500m or in isolated pinnacled shapes. The pinnacled forms reach heights of over 7 meters in some cases. These coral structures pose obstructions to...
Tipo: Report Palavras-chave: Coral reefs; Continental shelves; Coral reefs; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_1880; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1990 URL: http://hdl.handle.net/1834/2381
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Corrientes en la plataforma continental OceanDocs
Piola, A.R.; Rivas, A..
In this chapter the main features of the currents on the Argentine continental shelf are described. Due to the scarcity of direct current observations, adequate to resolve the mean flow, the circulation of the continental shelf is studied based on property distributions and models. These analyses indicate that the mean flowover the continental shelf varies between 1 and 2 Sverdrups (1Sverdrup = 1x106 m3 s-1)towards the NNE. A synthesis of results of studies of higher frequency motions is also presented. The most relevant results derived from long term direct current observations on the continental shelf near 43°S are discussed. The mean current velocities in the inner and mid-shelf regions vary between 0,05 and 0,10 m/s towards the NNE, in agreement with...
Tipo: Book Section Palavras-chave: Continental shelves; Ocean currents; Ocean circulation; Physical oceanography; Ocean currents; Physical oceanography; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_12883; Http://aims.fao.org/aos/agrovoc/c_5830; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1997 URL: http://hdl.handle.net/1834/1704
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Distribución de esponjas sobre la plataforma continental de la Guajira, Caribe colombiano. OceanDocs
Díaz, M.; Zea, S..
Durante la exploración de los fondos blandos calcáreos de la plataforma continental del departamento de La Guajira se identificaron 47 especies de esponjas de las clases Demospongiae y Calcarea. A partir de arrastres de fondo a lo largo de la plataforma continental sobre las franjas batimétricas de 10 y 50 m, se encontró que el número de especies es mayor a 50 m de profundidad, principalmente en áreas al norte y sur del departamento donde resaltan sedimentos tipo arena-lodo. Sin embargo, estos esquemas no son consistentes en todos los casos de acuerdo con las bajas similitudes basadas en la presencia-ausencia de esponjas, indicando una composición faunística muy heterogénea. Los fondos blandos permiten el crecimiento de esponjas sésiles y no sésiles,...
Tipo: Journal Contribution Palavras-chave: Sponges; Continental shelves; Distribution; Distribution; Sponges; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_7321; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2008 URL: http://hdl.handle.net/1834/3488
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Distribución del fitoplancton frente a la costa del Ecuador durante noviembre 1995 OceanDocs
Coello, D..
During the oceanographic cruises (T95/10/04 DO, B/I Tohalli) which were carried out during the period between the 2nd-6nd of november 1995, along the from the coast at 81~'20'W and between 01~'10' to 03~'20'S, 17 differents phytoplankton station, were surveyed for each station vertical drags were done in a water colum of 50 m depth by using of 47,5 cm diameter, 130 cm long and 55~km of light ned. The cualitative and quantitative plankton analysis shown that the studied area correspond to biological fertility region with Rhizosolenia styliformis, Coscinodiscus marginatus an Ceratium tripos as the dominant spacies. An area of phytoplankton activity is identifie as of having an outcrop origine (station 7, 8 and 9). The station that presented the major...
Tipo: Journal Contribution Palavras-chave: Phytoplankton; Geographical distribution; Continental shelves; Phytoplankton; Geographical distribution; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1996 URL: http://hdl.handle.net/1834/2968
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Distribución y abundancia de los recursos demersales en la plataforma continental del Ecuador durante octubre de 1995 OceanDocs
Revelo, W..
The demersal phase (from 18th to November 01th, 1995) of cruise T95/10/04 DO, covered an area of 15632,6 km2 between 00º36'0”N-80º34'3”O and 03º22'8”S-80º49'5”O, of the Ecuadorian Continental Plataform, the depth range from 14 to 115 meters. 120 species were recorded, divided into 85 osseous fish species, three sharks, 11 ray, 18 crustaceans, two molluscan and one holothurid (sea cucumber). Total biomass was estimated as 95297,5 t; with 97,3% of this biomass distributed between 01º00'0”S and 03º23'S. The most abundant species were: barriga juma (Larimus spp) (11153 t), corvina (Cynoscion spp) (4523 t), gallineta (Prionotus spp) (55651 t), perela (Palabrax callaensis) (3774 t) and ravi junco (Centrithmus signifer) (2407 t).
Tipo: Journal Contribution Palavras-chave: Fishery resources; Demersal fisheries; Continental shelves; Abundance; Geographical distribution; Demersal fisheries; Geographical distribution; Fishery resources; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1996 URL: http://hdl.handle.net/1834/2970
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El ecosistema de la plataforma patagónica austral, marzo-abril 2000. Composición, abundancia y distribución del zooplancton. OceanDocs
Sabatini, M..
The abundance, distribution and structure of the zooplankton community in southern Patagonia (SW Atlantic Ocean) were studied during late summer (March-April 2000) from samples obtained with Nackthai (390 ~km) and Multinet (150 ~km) samplers. Total concentrations of zooplankton biomass, integrated in the water column, ranged between 1.0 and 14.5 g m-2 (dry weight) and reached the highest values in the mid and outer shelf off Bahía Grande (Santa Cruz Prov., Argentina) (51~'S). The < 5 mm size fraction, composed mainly of copepods represented, on average, 45% of the total; amphipods and euphausiids accounted for 20% and 31%, respectively. Amphipods were, almost exclusively, Themisto gaudichaudii and euphausiids most abundant species Euphausia lucens and...
Tipo: Journal Contribution Palavras-chave: Zooplankton; Biomass; Population structure; Geographical distribution; Continental shelves; Zooplankton; Biomass; Population structure; Geographical distribution; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2008 URL: http://hdl.handle.net/1834/3142
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El Ecuador y la Convención de las Naciones Unidas sobre el Derecho del Mar OceanDocs
De la Torre, G..
La Convención de las Naciones Unidas sobre el Derecho del Mar (CONVEMAR) ha sido catalogada como uno de los logros más significativo en materia de derecho internacional, constituyéndose en la actualidad en una verdadera "constitución para los océanos" que norma con carácter positivo todos los aspectos relacionados con el mar. La CONVEMAR establece y define por primera vez espacios marítimos perfectamente delimitados como: Aguas Interiores, el Mar Territorial, la Zona Contigua, la Zona Económica Exclusiva (ZEE), y la Alta Mar, normando los aspectos relacionados con su jurisdicción y soberanía, así como la exploración y explotación de sus recursos naturales. De igual manera, esta Convención abarca aspectos trascendentales relacionados con la protección y...
Tipo: Journal Contribution Palavras-chave: Law of the sea; Territorial waters; Ocean space; Exclusive economic zone; Continental shelves; Territorial waters; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_7677; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2006 URL: http://hdl.handle.net/1834/2332
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El fondo marino OceanDocs
Parker, G.; Paterlini, M.C.; Violante, R..
A synthesis is given of the present knowledge of the topographic and sediment characters of the sea floor of the Argentine Sea. After considering some general characters of passive continental margins the Argentine characteristics are described. Various 'physiographic provinces' are differentiated. The corresponding to the continental shelf is the most extensive on its several 'terraces' associated with Plio-Pleistocene sea level changes. Soft sediments are dominant,mainly being composed of sand with minor but varied quantities of shells and mud. Harder bottoms, composed of loose gravel and rocky outcrops are also present. The information presented here is not sufficient for evaluating the natural resources of the Argentine Sea or for solving sovereignty...
Tipo: Book Section Palavras-chave: Continental shelves; Bottom topography; Sediment distribution; Topographic maps; Ocean floor; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1997 URL: http://hdl.handle.net/1834/1720
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Estimaciones satelitales de clorofila y los frentes oceánicos del Atlántico Sudoccidental OceanDocs
Romero, S.I..
Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales (Argentina)
Tipo: Theses and Dissertations Palavras-chave: Chlorophylls; Continental shelves; Shelf fronts; Estuarine front; Shelf edge fronts; Variability; Phytoplankton; Photosynthesis; Satellite sensing; Phytoplankton; Chlorophylls; Continental shelves; Photosynthesis; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_1577; Http://aims.fao.org/aos/agrovoc/c_32413; Http://aims.fao.org/aos/agrovoc/c_5812.
Ano: 2008 URL: http://hdl.handle.net/1834/2827
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Evaluación acústica de recursos pesqueros pelágicos frente a la costa sur ecuatoriana durante septiembre de 1995 OceanDocs
Chalen, X.; Vicuña, H..
Nineteen lightday rectangular transects were made 16 in the area of the Gulf of Guayaquil (Ecuador), and 3 in an oceanic area at the west of the Gulf of Guayaquil, this was the second part of research cruise, oriented to the evaluation of the small pelagic fish stocks, it was made between september 14th and 27th, 1995. The SIMRAD EK-500 acoustic system was used, installed on board of the National Research Institute (INP) R/V Tohallí. At the same time, people from the INP's Fisheries Observer Program were on four private enterprises vessels, while they were fishing in the same Gulf's area. They also made the biological sample of the commercial catch, for future relation with the results from the acoustic evaluation. The V/R Tohallí principal catch was jack...
Tipo: Journal Contribution Palavras-chave: Geographical distribution; Abundance; Demersal fisheries; Fishery resources; Continental shelves; Echo surveys; Geographical distribution; Demersal fisheries; Fishery resources; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1996 URL: http://hdl.handle.net/1834/2962
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Los recursos demersales de la Plataforma Continental del Ecuador. Parte dos. Producción potencial y recomendaciones para la utilización del recurso de pesca blanca en el Ecuador OceanDocs
Herdson, D.; Rodríguez, W.; Martínez, J..
The stock estimates obtained during the demersal fish resources survey in 1980-1985 were used to estimate the potential yields of demersal stocks of the Ecuadorian Continental Shelf. The difficulties of predicting yields for multispecies fisheries are discussed and modified version of the Gulland model was adopted. The potential realizable yields for multispecies fisheries are discussed and a modified version of the Gulland model was adopted. The potential realizable yield was calculated to be between 15,000 t and 20,000 t per year, of which 2,000 t is good quality fish, 5,000 t per year of small and medium fish and 8,000 t of gurnards. The majority of these resources are at present being fished at around their optimum levels and any further developments...
Tipo: Journal Contribution Palavras-chave: Demersal fisheries; Continental shelves; Yield predictions; Exploitation; Demersal fisheries; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1985 URL: http://hdl.handle.net/1834/3227
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Masas de agua en la plataforma continental OceanDocs
Guerrero, R.A.; Piola, A.R..
The current knowledge on the argentine continental shelf water masses is summarized in this paper. These water masses are characterized as a function of water types fed by the boundary currents and the modifications due to continental runoff, and water energy exchange with the atmosphere. Based on sea surface salinity distributions and the temperature-salinity characteristics, three masses are described: coastal waters, mid-shelf waters and slope waters. The main freshwater sources found along the coast are identified, as well as high salinity formation areas. The vertical stratification, mainly controlled by temperature, is analyzed along the annual cycle. The stratification cycle is mainly driven by the heat exchange between the atmosphere and the ocean....
Tipo: Book Section Palavras-chave: Continental shelves; Water masses; Hydrography; Water circulation; Oceanic fronts; Stratification; Water circulation; Stratification; Hydrography; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_8314; Http://aims.fao.org/aos/agrovoc/c_7438; Http://aims.fao.org/aos/agrovoc/c_3727; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1997 URL: http://hdl.handle.net/1834/1703
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Moluscos y su taxocenosis en los fondos someros del sector sur de la plataforma continental del Caribe colombiano OceanDocs
García-Valencia, C.; Díaz, J.M..
During a baseline survey of the shallow bottoms (10-50 m) of the southern continental shelf of the Colombian Caribbean, a total of 35 molluscan species belonging to 24 families was collected. Three main molluscan bottom assemblages were recognized according to species composition and abundance, whose distribution seems likely to be controlled rather by depth than by sediment features. Twenty four of the species were not recorded before from this area of the Colombian Caribbean.
Tipo: Journal Contribution Palavras-chave: Marine molluscs; Continental shelves; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2000 URL: http://hdl.handle.net/1834/3294
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Plataforma continental del Ecuador: Artículo 76 de la Ley del Mar, consideraciones geológicas para la extensión de la plataforma en Galápagos más allá de las 200 millas OceanDocs
Pazmiño, N.; Santana, E..
En el presente documento se analizan algunas posibilidades de extensión de la plataforma más allá de las 200 millas conforme lo establece el artículo 76, tomando en cuenta las directrices de la Comisión de Límites de la Plataforma Continental CLCS. 11.
Tipo: Journal Contribution Palavras-chave: Continental shelves; Ocean space; Territorial waters; Law of the sea; Continental shelves; Territorial waters; Http://aims.fao.org/aos/agrovoc/c_32413; Http://aims.fao.org/aos/agrovoc/c_7677.
Ano: 2006 URL: http://hdl.handle.net/1834/2330
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Plataforma continental ecuatoriana de 350 millas: Una apreciación del nuevo derecho del mar. Implicaciones económicas de minerales existentes en el área. OceanDocs
Zurita, G..
El común orígen geológico de las Islas galápagos y las cordilleras Carnegie y Cocos permite la posibilidad de extender la plataforma ecuatorial hasta 350 millas desde las Islas, de acuerdo a consideraciones estipuladas en el Nuevo Derecho del Mar. Después de una serie de investigaciones realizadas por instituciones internacionales, los depósitos minerales existentes en este área han sido evaluados económicamente, los que pueden haber sido sub o sobreestimados. Se considera necesaria mayor investigación en los lugares de asentamiento de yacimiento minerales, de manera de conocer su real valía. Ante la situación expectante creada a raíz de la apertura para la firma del Nuevo Derecho, el Ecuador debe tomar en cuenta la posibilidad presentada en este trabajo...
Tipo: Journal Contribution Palavras-chave: Law of the sea; Mineral exploration; Continental shelves; Continental margins; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 1989 URL: http://hdl.handle.net/1834/2162
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Primer registro de Clypeaster ravenelli y Centrostephanus longispinus rubicingulus (Echinodermata: Echinoidea) para el Caribe colombiano OceanDocs
Borrero-Pérez, G.H.; Benavides-Serrato, M..
This paper reports the first record of Clypeaster ravenelii (Clypeasteridae) on the Southern Caribbean and Centrostephanus longispinus rubicingulus (Diadematidae) on Colombian Caribbean coast, based on specimens collected on the continental shelf off the Guajira Peninsula.
Tipo: Journal Contribution Palavras-chave: Taxonomy; New records; Continental shelves; Taxonomy; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2004 URL: http://hdl.handle.net/1834/3063
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Structure and Dynamics of demersal assemblages on the continental shelf and upper slope off Ghana, West Africa OceanDocs
Koranteng, K.A.
Using two-way indicator species and detrended correspondence analysis, species on the continental shelf and upper slope of Ghana were classified into 6assemblages. The structure of the assemblages is determined primarily by depth and type of sediment on the seabed. There are clear faunal discontinuities around 30-40, 100, and 200m depth. The dynamics of the assemblages are influenced by physico-chemical parameters of the water masses, mainly temperature, salinity and dissolved oxygen, which are periodically modified by the seasonal coastal upwelling that occurs in the area. The observed changes in the composition and relative importance of species in the assemblages can be related to increased fishing activity and environmental forcing.
Tipo: Journal Contribution Palavras-chave: Continental shelves; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_32413.
Ano: 2001 URL: http://hdl.handle.net/1834/3204
Registros recuperados: 19
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