NDLI: Decomposição e dinâmica de liberação de nitrogênio e fósforo de frações vegetais de Salvinia auriculata Aubl. em um reservatório da Amazônia legal

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Decomposição e dinâmica de liberação de nitrogênio e fósforo de frações vegetais de Salvinia auriculata Aubl. em um reservatório da Amazônia legal

Content Provider	Semantic Scholar
Author	Silva, Deivid Sousa Cunha-Santino, Marcela Bianchessi Da Marques, Elineide Eugênio
Copyright Year	2011
Abstract	This study aimed to determine the decomposition coefficients of the submerged (SP) and aerial part (AP) of S. auriculata at two different depths within water column (surface and sediment). It also quantified the decomposition yield of S. auriculata and the temporal changes of nitrogen and phosphorous content of the remaining biomass. The macrophytes were fractionated in parts and were dried in sequence until attaining constant weight. The litterbags with plant material were incubated in the reservoir of UHE Lajeado. The results of mass loss showed that there were no significant differences among the AP-sed and AP-sur (p > 0.05). However, the AP-sed was significantly different from SP-sed (p -1 and AP-sur a k of 0.0067 day -1 . The SP-sed presented a k of 0.0027 day -1 and the SP-sur 0.0040 day -1 . It was also noticed that during the first days of decomposition great amounts of nitrogen and phosphorous were solubilized. This event was related to the leachate process; from the 14th day of decomposition, an increasing trend was observed in nitrogen concentrations. This fact was probably related to detritus enrichment by microbial colonization.
Starting Page	21
Ending Page	29
Page Count	9
File Format	PDF HTM / HTML
DOI	10.4025/actascibiolsci.v33i1.5630
Volume Number	33
Alternate Webpage(s)	http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/download/5630/5630
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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