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The effect of the size of particles on mineralization of Oxycaryum cubense (Poepp. & Kunth) Lye

التفاصيل البيبلوغرافية
العنوان: The effect of the size of particles on mineralization of Oxycaryum cubense (Poepp. & Kunth) Lye
المؤلفون: Bianchini Jr., I., Cunha-Santino, M. B.
المصدر: Brazilian Journal of Biology. May 2006 66(2b)
بيانات النشر: Instituto Internacional de Ecologia, 2006.
سنة النشر: 2006
مصطلحات موضوعية: mineralization, Oxycaryum cubense, aquatic macrophytes, detritus size
الوصف: Assays were carried out to evaluate effects of detritus size on the mineralization of an aquatic macrophyte, the Oxycaryum cubense. Samples of plant and water were collected from an oxbow lake, the Infernão lagoon (21° 35' S and 47° 51' W) located at Mogi Guaçu river floodplain. The plants were taken to the laboratory, washed under tap water, dried (50 °C) and fractioned into six groups according to their size, viz. 100, 10, 1.13, 0.78, 0.61 and 0.25 mm. Decomposition chambers were prepared by adding 1.0 g of plant fragments to 4.1 L of water lagoon. In sequence, the incubations were aerated and the concentrations of dissolved oxygen, the pH, the electric conductivity and the temperature were monitored for 120 days. The occurrence of anaerobic processes was avoided by reoxygenating the solutions. The experimental results were fitted to a first order kinetic model and the consumption of dissolved oxygen from mineralization processes was obtained. The physical process of fragmentation of O. cubense detritus is unlikely to promote the consumption of higher quantities of dissolved oxygen in mineralization processes meaning that fragmentation should not interfere in the balance of DO in this aquatic system, however fragmentation processes favored the acidification and increased the liberation of dissolved ions from the Infernão lagoon.
نوع الوثيقة: article
وصف الملف: text/html
اللغة: English
تدمد: 1519-6984
DOI: 10.1590/S1519-69842006000400008
URL الوصول: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842006000400008
Rights: info:eu-repo/semantics/openAccess
رقم الانضمام: edssci.S1519.69842006000400008
قاعدة البيانات: SciELO
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