Effects of phosphorus and nitrogen enrichment on the phytoplankton in a tropical reservoir (Lobo Reservoir, Brazil)
| العنوان: | Effects of phosphorus and nitrogen enrichment on the phytoplankton in a tropical reservoir (Lobo Reservoir, Brazil) |
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| المؤلفون: | Raoul Henry, P. R. Curi, José Galizia Tundisi |
| المصدر: | Hydrobiologia. 118:177-185 |
| بيانات النشر: | Springer Science and Business Media LLC, 1984. |
| سنة النشر: | 1984 |
| مصطلحات موضوعية: | Chlorophyll a, Ecology, Phosphorus, chemistry.chemical_element, Aquatic Science, Phosphate, Nitrogen, chemistry.chemical_compound, Ammonia, chemistry, Nitrate, Environmental chemistry, Phytoplankton, Nitrite |
| الوصف: | The effects of enrichment with phosphate (0–500 µg. 1−1) and forms of nitrogen (nitrate, nitrite, ammonia an and urea) (0–3500 µgg. −1) on the phytoplankton growth of Lobo Reservoir (Brazil) were studied in July, 1979. Suspended matter, chlorophyll a, cell concentrations and the carotenoid:cchlorophyll ratio were estimated following 14 days of ‘in situ’ incubation. Phosphate alone caused no significant effects, but enrichment with nitrogen caused a substantial increase on the growth of phytoplankton. Comparison between the different forms of nitrogen showed insignificant effects after their additions with 350 µg. −1 and in combination with phosphate. However, when nitrogen was added in large quantities (3 500 µg. −1), significant differences between the nitrogeneous forms were found, with urea causing the strongest effect. In July, nitrogen is mhe main limiting nutrient to phytoplankton growth of Lobo Reservoir. |
| تدمد: | 1573-5117 0018-8158 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::b8ab1239e722272b670fd3dcce72f01aTest https://doi.org/10.1007/bf00021041Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........b8ab1239e722272b670fd3dcce72f01a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15735117 00188158 |
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