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| Registros recuperados: 15 | |
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| Pérez Seijas, G.M.; Ramirez, F.C.; Viñas, M.D.. |
| A study was made on numercial and biomass variations of the zooplankton of the San Jorge Gulf (Argentina), based on samples from five cruises performed during 1985. The sampling was included within a proagramme for the biology and fishery evaluation of the shrimp Pleoticus muelleri. San Jorge, a large gulf of the northern patagonian shelf, comprises major fishery activities. Some fish species of economical importance depend on copepods for their feeding, like anchovy (Engraulis anchoita)or partially on middle-size plankters, like mackerel (Scomber japonicus). As a way for determining the trophic disponibility at the gulf, a study was made in order to express the numerical abundance of copepods, euphausiids and amphipods and other items of lesser... |
| Tipo: Journal Contribution |
Palavras-chave: Zooplankton; Biomass; Size distribution; Population density; Zooplankton; Biomass; Population density; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6112. |
| Ano: 1987 |
URL: http://hdl.handle.net/1834/2006 |
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| González, J.; Daza, E.; Vargas, C.; Cortes, C.; Miranda, H.. |
| El presente informe da cuenta de los resultados de las actividades realizadas para evaluar el estado actual del recurso caracol trophon (Trophon geversianus), en Bahía Gente Grande, en la XII Región. Se presenta la ubicación geográfica y superficie de los bancos identificados de Trophon y Chorito (Mytilus chilensis), las estimaciones de densidad y abundancia, su estructura de tamaños, y se incorporan los resultados del estado del recurso en el área de estudio, y se realizan consideraciones para una propuesta de administración de las poblaciones de caracol trophon. |
| Tipo: Report |
Palavras-chave: Marine molluscs; Abundance; Population density; Geographical distribution; Resource management; Geographical distribution; Population density; Resource management; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6112; Http://aims.fao.org/aos/agrovoc/c_6524. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/1852 |
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| Cornejo, S.; Daza, E.; Guzmán, L.. |
| El presente informe da cuenta de los resultados de las actividades realizadas para evaluar el estado de los bancos de ostión del sur (Chlamys vitrea), en sectores selectos de la región de Magallanes y Antártica Chilena (XII Región). Se incorporan también propuestas de administración y medidas para la recuperación de las poblaciones del recurso. Se presenta la ubicación geográfica de los bancos identificados en cada fiordo y la superficie ocupada por ellos, además de las estructuras de tamaño, tallas medias, fracción de ejemplares sobre la talla mínima legal, relación longitud peso, pesos medios, estimaciones de densidad y abundancia, además de las estimaciones de las capturas totales permisibles (CTPs). |
| Tipo: Report |
Palavras-chave: Marine molluscs; Resource management; Population characteristics; Population density; Abundance; Population structure; Population structure; Resource management; Population density; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_6112. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1755 |
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| Cassia, M.C.; Hansen, J.E.. |
| The Patagonian cod (Salilota australis) inhabits the SW Atlantic from 38°S up to 55°S, as well as the Pacific Ocean from 40°S up to 57°S. The annual catches of this species by both the Argentine fleet and those operating around the Malvinas Islands have significantly increased during the decade 1990-2000, peaking to 16,556 t in 1996. After this, a marked decrease in landings was noticed, and during 2003 the catch was 7,924 t. Seasonal distribution, concentration grounds, and population structure of the Patagonian cod from the Argentine Sea are described, and the mean densities of the species are seasonally related to latitude, temperature and depth, on the basis of data from surveys carried out by the INIDEP research vessels in 1992 and 1993. Highest mean... |
| Tipo: Journal Contribution |
Palavras-chave: Gadoid fisheries; Seasonal distribution; Population density; Population structure; Biomass; Population structure; Biomass; Population density; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6112. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1561 |
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| Revelo, W.. |
| The demersal phase (from june 24th to 09th, 1995) of cruise T95/06/02 DO, covered an area of 23833,6 km2 between 01° 04'1”N - 79° 59'6”O and 03° 22'7”S - 80° 48'0”O, of the Ecuadorian Continental Plataform, the deph range from 13 to 111 meters. 161 species were recorded, divided into 106 oseum fish species, five sharks, nine ray, 37 crustaceans, three molluscan and one holothurid (sea cucumber). Total biomass was estimated as 91685, 5 t, with 68,72% of this biomass distributed between 02° 15'1”S - 03°22'7”S, opposite to Guayaquil Gulf. The most abundant species were: Gallineta (Prionotus stephanophrys) (37283,7 t), Barriga juma (Larimus spp) (16146,2 t), Perela (Paralabrax spp) (14053,4 t), Palometa (Peprilus medius)(9865,3 t) and Cabezudo (Caulolatilus... |
| Tipo: Journal Contribution |
Palavras-chave: Demersal fisheries; Biomass; Geographical distribution; Population density; Demersal fisheries; Biomass; Geographical distribution; Population density; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6112. |
| Ano: 1995 |
URL: http://hdl.handle.net/1834/3029 |
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| Registros recuperados: 15 | |
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