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Campo DC | Valor | Idioma |
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dc.contributor.author | Quesada, Carlos Alberto Nobre | - |
dc.contributor.author | Lugli, Laynara F. | - |
dc.contributor.author | Hartley, Iain P. | - |
dc.contributor.author | Barrantes, Oscar J. Valverde | - |
dc.contributor.author | Martins, Nathielly Pires | - |
dc.contributor.author | Hofhansl, Florian | - |
dc.contributor.author | Hoosbeek, Marcel R. | - |
dc.contributor.author | Fuchslueger, Lucia | - |
dc.contributor.author | Schaap, Karst J. | - |
dc.date.accessioned | 2021-11-09T12:12:59Z | - |
dc.date.available | 2021-11-09T12:12:59Z | - |
dc.date.issued | 2021 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/38224 | - |
dc.description.abstract | Purpose: The tropical phosphorus cycle and its relation to soil phosphorus (P) availability are a major uncertainty in projections of forest productivity. In highly weathered soils with low P concentrations, plant and microbial communities depend on abiotic and biotic processes to acquire P. We explored the seasonality and relative importance of drivers controlling the fluctuation of common P pools via processes such as litter production and decomposition, and soil phosphatase activity. Methods: We analyzed intra-annual variation of tropical soil phosphorus pools using a modified Hedley sequential fractionation scheme. In addition, we measured litterfall, the mobilization of P from litter and soil extracellular phosphatase enzyme activity and tested their relation to fluctuations in P- fractions. Results: Our results showed clear patterns of seasonal variability of soil P fractions during the year. We found that modeled P released during litter decomposition was positively related to change in organic P fractions, while net change in organic P fractions was negatively related to phosphatase activities in the top 5 cm. Conclusion: We conclude that input of P by litter decomposition and potential soil extracellular phosphatase activity are the two main factors related to seasonal soil P fluctuations, and therefore the P economy in P impoverished soils. Organic soil P followed a clear seasonal pattern, indicating tight cycling of the nutrient, while reinforcing the importance of studying soil P as an integrated dynamic system in a tropical forest context. © 2021, The Author(s). | pt_BR |
dc.language.iso | en | pt_BR |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Brazil | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/br/ | * |
dc.subject | Hedley fractionation | pt_BR |
dc.subject | Leaf litter | pt_BR |
dc.title | Litter inputs and phosphatase activity affect the temporal variability of organic phosphorus in a tropical forest soil in the Central Amazon | pt_BR |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.1007/s11104-021-05146-x | - |
dc.publisher.journal | Plant and Soil | pt_BR |
Aparece nas coleções: | Artigos IPUB |
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Litter.pdf | 60,46 kB | Adobe PDF | Visualizar/Abrir |
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