Leaf litter manipulations alter soil physicochemical properties and tree growth in a Neotropical savanna
Aim: This study was aimed to assess the role that leaf litter play in nutrient cycling, nutrient soil availability and ecosystem processes in an oligotrophic tropical savanna. Methods: A four year experiment was performed in a Neotropical savanna from the Brazilian plateau (cerrado), in which litter...
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2011
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0032079X_v346_n1_p385_VillalobosVega http://hdl.handle.net/20.500.12110/paper_0032079X_v346_n1_p385_VillalobosVega |
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paper:paper_0032079X_v346_n1_p385_VillalobosVega2023-06-08T14:59:56Z Leaf litter manipulations alter soil physicochemical properties and tree growth in a Neotropical savanna Goldstein, Guillermo Hernan Scholz, Fabián Gustavo Bucci, Sandra Janet Litter decomposition rates Nutrient cycling Soil fertility Soil respiration Tree growth Tropical savannas biophysics cerrado decomposition experimental study growth rate leaf litter Neotropical Region nutrient availability nutrient cycling oligotrophic environment physicochemical property root system savanna soil fertility soil nutrient soil organic matter soil respiration soil temperature stem Brazil Sclerolobium paniculatum Aim: This study was aimed to assess the role that leaf litter play in nutrient cycling, nutrient soil availability and ecosystem processes in an oligotrophic tropical savanna. Methods: A four year experiment was performed in a Neotropical savanna from the Brazilian plateau (cerrado), in which litter levels were modified, and the resulting changes in biophysical and chemical soil properties were studied. Changes in organic matter decomposition, soil respiration and stem growth of the six most common tree species were also monitored. Results: Compared to litter removal plots, double litter plots had lower maximum soil temperature and higher soil water content, and litter decomposition rates in one of three species studied, consistent with higher soil respiration rates observed in this treatment. With the exception of Ca, there were no significant differences in nutrients between the removal, natural and double litter plots, even though most nutrients tended to increase in the double litter plots by the end of the experimental period, while in the control plots nutrient levels remained relatively constant. Of the six tree species used for growth analysis, only one, Sclerolobium paniculatum, a fast growing species with shallow roots, had a significant increase in stem growth due to litter addition. Conclusion: Preliminary results over four years indicate that litter removal and addition resulted in some significant changes and tendencies that indicate that litter is effectively altering ecosystem processes. The information obtained also suggest that nutrient cycling in plots with natural litter levels (control plots) was in a closed loop; most nutrients released by litter decomposition and mineralization were absorbed and reutilized immediately by the plants, thus minimizing nutrient leakage outside the system. © 2011 Springer Science+Business Media B.V. Fil:Goldstein, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Scholz, F.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bucci, S.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0032079X_v346_n1_p385_VillalobosVega http://hdl.handle.net/20.500.12110/paper_0032079X_v346_n1_p385_VillalobosVega |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Litter decomposition rates Nutrient cycling Soil fertility Soil respiration Tree growth Tropical savannas biophysics cerrado decomposition experimental study growth rate leaf litter Neotropical Region nutrient availability nutrient cycling oligotrophic environment physicochemical property root system savanna soil fertility soil nutrient soil organic matter soil respiration soil temperature stem Brazil Sclerolobium paniculatum |
| spellingShingle |
Litter decomposition rates Nutrient cycling Soil fertility Soil respiration Tree growth Tropical savannas biophysics cerrado decomposition experimental study growth rate leaf litter Neotropical Region nutrient availability nutrient cycling oligotrophic environment physicochemical property root system savanna soil fertility soil nutrient soil organic matter soil respiration soil temperature stem Brazil Sclerolobium paniculatum Goldstein, Guillermo Hernan Scholz, Fabián Gustavo Bucci, Sandra Janet Leaf litter manipulations alter soil physicochemical properties and tree growth in a Neotropical savanna |
| topic_facet |
Litter decomposition rates Nutrient cycling Soil fertility Soil respiration Tree growth Tropical savannas biophysics cerrado decomposition experimental study growth rate leaf litter Neotropical Region nutrient availability nutrient cycling oligotrophic environment physicochemical property root system savanna soil fertility soil nutrient soil organic matter soil respiration soil temperature stem Brazil Sclerolobium paniculatum |
| description |
Aim: This study was aimed to assess the role that leaf litter play in nutrient cycling, nutrient soil availability and ecosystem processes in an oligotrophic tropical savanna. Methods: A four year experiment was performed in a Neotropical savanna from the Brazilian plateau (cerrado), in which litter levels were modified, and the resulting changes in biophysical and chemical soil properties were studied. Changes in organic matter decomposition, soil respiration and stem growth of the six most common tree species were also monitored. Results: Compared to litter removal plots, double litter plots had lower maximum soil temperature and higher soil water content, and litter decomposition rates in one of three species studied, consistent with higher soil respiration rates observed in this treatment. With the exception of Ca, there were no significant differences in nutrients between the removal, natural and double litter plots, even though most nutrients tended to increase in the double litter plots by the end of the experimental period, while in the control plots nutrient levels remained relatively constant. Of the six tree species used for growth analysis, only one, Sclerolobium paniculatum, a fast growing species with shallow roots, had a significant increase in stem growth due to litter addition. Conclusion: Preliminary results over four years indicate that litter removal and addition resulted in some significant changes and tendencies that indicate that litter is effectively altering ecosystem processes. The information obtained also suggest that nutrient cycling in plots with natural litter levels (control plots) was in a closed loop; most nutrients released by litter decomposition and mineralization were absorbed and reutilized immediately by the plants, thus minimizing nutrient leakage outside the system. © 2011 Springer Science+Business Media B.V. |
| author |
Goldstein, Guillermo Hernan Scholz, Fabián Gustavo Bucci, Sandra Janet |
| author_facet |
Goldstein, Guillermo Hernan Scholz, Fabián Gustavo Bucci, Sandra Janet |
| author_sort |
Goldstein, Guillermo Hernan |
| title |
Leaf litter manipulations alter soil physicochemical properties and tree growth in a Neotropical savanna |
| title_short |
Leaf litter manipulations alter soil physicochemical properties and tree growth in a Neotropical savanna |
| title_full |
Leaf litter manipulations alter soil physicochemical properties and tree growth in a Neotropical savanna |
| title_fullStr |
Leaf litter manipulations alter soil physicochemical properties and tree growth in a Neotropical savanna |
| title_full_unstemmed |
Leaf litter manipulations alter soil physicochemical properties and tree growth in a Neotropical savanna |
| title_sort |
leaf litter manipulations alter soil physicochemical properties and tree growth in a neotropical savanna |
| publishDate |
2011 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0032079X_v346_n1_p385_VillalobosVega http://hdl.handle.net/20.500.12110/paper_0032079X_v346_n1_p385_VillalobosVega |
| work_keys_str_mv |
AT goldsteinguillermohernan leaflittermanipulationsaltersoilphysicochemicalpropertiesandtreegrowthinaneotropicalsavanna AT scholzfabiangustavo leaflittermanipulationsaltersoilphysicochemicalpropertiesandtreegrowthinaneotropicalsavanna AT buccisandrajanet leaflittermanipulationsaltersoilphysicochemicalpropertiesandtreegrowthinaneotropicalsavanna |
| _version_ |
1768545178584350720 |