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| Registros recuperados: 11 | |
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| 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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| Félix, F.; Haase, B.. |
| Entre los meses de julio y septiembre de 1995 se realizaron 15 viajes a bordo de embarcaciones comerciales turísticas que hacen viajes entre Puerto López y la isla de La Plata para estudiar las ballenas jorobada. Un total de 102 ballenas en 45 grupos fueron observados en este período. Los grupos estuvieron formados por 1 a 5 individuos (X=2.26, DS=0.95). En 16 grupos se pudo establecer su composición por clases: 8 estuvieron compuestos solo por adultos (X=2.25, DS=0.82), 4 por adultos y subadultos (X=2.75, DS=0.82), 3 grupos por adultos y crías (2.33, DS= 0.47) y 1 por un subadulto solo. La tasa cruda de nacimientos fue de 0.029. Treinta y un individuos fueron identificados por el patrón de coloración en la parte ventral de la cola, aumentando así a 72 el... |
| Tipo: Journal Contribution |
Palavras-chave: Marine mammals; Population number; Stranding; Age groups; Age groups; Http://aims.fao.org/aos/agrovoc/c_28628. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/2287 |
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| His, Edouard; Maurer, Daniele; Robert, Rene. |
| The spat production in the Bay of Arcachon has been recently disturbed. Bioassays using algae used as food for oyster larvae have shown that the organotin paints affect or inhibit growth of Isochrysis galbana and Chaetoceros calcitrans . Fresh waters coming into the bay and shore sediment did not affect the growth of these algae. Bioassays proposed by Woelke (1967) using embryos and larvae of Crassostrea gigas have shown that the quality of the sea water from Arcachon harbour has been improved a few months after the use of organotin paints has been prohibited. Likewise fresh waters are free from any micropollutants that could drastically disturb the reproduction of C. gigas in the bay. |
| Tipo: Text |
Palavras-chave: Marine mollusks; Pollution effects; Recruitment; Population number; Oyster culture. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/publication-1788.pdf |
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| 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 |
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| Registros recuperados: 11 | |
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