Etude de la fertilité des eaux marines au moyen de tests biologiques effectués avec des cultures d'algues. II. Limitation nutritionnelle et viabilité de l'inoculum
| العنوان: | Etude de la fertilité des eaux marines au moyen de tests biologiques effectués avec des cultures d'algues. II. Limitation nutritionnelle et viabilité de l'inoculum |
|---|---|
| المؤلفون: | B. R. Berland, D. J. Bonin, J. P. Pointier, S. Y. Maestrini |
| المصدر: | Internationale Revue der gesamten Hydrobiologie und Hydrographie. 58:203-220 |
| بيانات النشر: | Wiley, 1973. |
| سنة النشر: | 1973 |
| مصطلحات موضوعية: | Chlorophyll a, Limiting, Aquatic Science, Biology, Skeletonema costatum, Nutrient starvation, chemistry.chemical_compound, Nutrient, chemistry, Botany, Bioassay, General Agricultural and Biological Sciences, Chaetoceros lauderi, Ecology, Evolution, Behavior and Systematics |
| الوصف: | Ten cultures of phytoplankters, including four strains of Skeletonema costatum from different origins, were used to improve some aspects of the bioassay technology. Special attention was paid to the preliminary nutrient limitation of the inocula. When the cells are maintained in nutrient starvation, their carbon, nitrogen, carbohydrates, proteins and above all chlorophyll a contents decrease. The minimum appears after a range of 2–7 days, according to species. The survival of these limited cells and their capacity to give rise to active growing cultures when sub-cultured are different with species, but efficiency in the inocula they provide usually can occur only until the minimum content in cellular components appears. Starved cells and enriched cultures of Chaetoceros lauderi and Skeletonema costatum were used to inoculate several samples of sea water, in order to test the effect of the starvation on the experimental results. It appears that the starved cells increase the sensitivity of the method, but they are more susceptible to substances limiting their growth. In the opinion of the authors the best way would be to use both starved and enriched cells as inocula, but, when this is impossible, cautiously starved cells should be used with unpolluted sea waters. |
| تدمد: | 1522-2632 0020-9309 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::97b5bf55d86161cc2bc61b3b4aa60f86 https://doi.org/10.1002/iroh.19730580203 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........97b5bf55d86161cc2bc61b3b4aa60f86 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15222632 00209309 |
|---|