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| Registros recuperados: 919 | |
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| Antonius, A.. |
| Un reconocimiento en los alrededores de Santa Marta, Colombia, realizado en Enero y Febrero de 1971, resultó con 33 especies de corales Scleractinias. Se determinaron distribución y abundancia relativa de las especies a lo largo de transectos. En estos se recolectaron también los especímenes, en cada caso desde el límite inferior de la presencia de corales (Existencia más profunda en 30 ms) hasta el eulitoral. La ausencia de verdaderos arrecifes puede ser la consecuencia de afloramiento de aguas frías. |
| Tipo: Journal Contribution |
Palavras-chave: Aquatic reptiles; Growth; Coral; Growth; Http://aims.fao.org/aos/agrovoc/c_3394. |
| Ano: 1972 |
URL: http://hdl.handle.net/1834/3317 |
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| Aloncle, Henri; Delaporte, Francis. |
| As a result of 5 years of sampling the following results were reached: (1) so far as growth was concerned 3 size groups were recognised during June-July. The `classic' type measuring similar to 52-62 cm, a group ranging from 54-55 cm and a 3rd group measuring 64-65cm. By marking the fish and by studying the degree of distribution of the stomach parasite, H.fusca it was noted that the albacore entering the north east Atlantic during summer constitute a heterogenous population migrate along the same route upto the north west boundary of Cape Finisterre. Thereafter they diverge, one group forming a semi-circle along the Bay of Biscay, another moving northwards and on reaching the south of Ireland bends westward. |
| Tipo: Text |
Palavras-chave: North east Atlantic; Growth; Polution dynamique; Migration; Thunnus alalunga. |
| Ano: 1973 |
URL: http://archimer.ifremer.fr/doc/1973/publication-2227.pdf |
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| Mommaerts-Billiet, F.. |
| Phytoplankton response to environmental pollution by oil and emulsifiers has been studied. The nanoplanktonic flagellate <i>Platymonas tetrathele</i> has been assayed with increasing concentrations of crude oil, industrial non-ionic emulsifiers and mixtures of these products. Cultures poisoned with an emulsifier with an aromatic solvent exhibited a very long lag phase. Diminished growth rates were observed for all the products tested most of the time at concentrations above 50 ppm. The mixtures showed a toxicity close to that of the emulsifier component at its concentration in the mixture and lower than that of the crude oil alone. Fine structure modifications have been investigated and the possible ecological effects of such pollution have... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth; Marine pollution; Nannoplankton; Toxicity tests. |
| Ano: 1973 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3478 |
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| Registros recuperados: 919 | |
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