Soil enzyme responses to land use change in the tropical rainforest of the Colombian Amazon region.

Soil enzymes mediate key processes and functions of the soils, such as organic matter decomposition and nutrient cycling in both natural and agricultural ecosystems. Here, we studied the activity of five extracellular soil enzymes involved in the C, N, and P-mineralizing process in both litter and s...

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Autores principales:	Adriana M Silva-Olaya, Dúber A Mora-Motta, Maurício R Cherubin, Daniel Grados, Anil Somenahally, Fausto A Ortiz-Morea
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4dc98f1325f7427f9a0898af7421678e
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spelling	oai:doaj.org-article:4dc98f1325f7427f9a0898af7421678e2021-12-02T20:14:59ZSoil enzyme responses to land use change in the tropical rainforest of the Colombian Amazon region.1932-620310.1371/journal.pone.0255669https://doaj.org/article/4dc98f1325f7427f9a0898af7421678e2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0255669https://doaj.org/toc/1932-6203Soil enzymes mediate key processes and functions of the soils, such as organic matter decomposition and nutrient cycling in both natural and agricultural ecosystems. Here, we studied the activity of five extracellular soil enzymes involved in the C, N, and P-mineralizing process in both litter and surface soil layer of rainforest in the northwest region of the Colombian Amazon and the response of those soil enzymes to land use change. The experimental study design included six study sites for comparing long-term pasture systems to native forest and regeneration practices after pasture, within the main landscapes of the region, mountain and hill landscapes separately. Results showed considerable enzymatic activity in the litter layer of the forest, highlighting the vital role of this compartment in the nutrient cycling of low fertility soils from tropical regions. With the land use transition to pastures, changes in soil enzymatic activities were driven by the management of pastures, with SOC and N losses and reduced absolute activity of soil enzymes in long-term pastures under continuous grazing (25 years). However, the enzyme activities expressed per unit of SOC did not show changes in C and N-acquiring enzymes, suggesting a higher mineralization potential in pastures. Enzymatic stoichiometry analysis indicated a microbial P limitation that could lead to a high catabolic activity with a potential increase in the use of SOC by microbial communities in the search for P, thus affecting soil C sequestration, soil quality and the provision of soil-related ecosystem services.Adriana M Silva-OlayaDúber A Mora-MottaMaurício R CherubinDaniel GradosAnil SomenahallyFausto A Ortiz-MoreaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0255669 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Adriana M Silva-Olaya Dúber A Mora-Motta Maurício R Cherubin Daniel Grados Anil Somenahally Fausto A Ortiz-Morea Soil enzyme responses to land use change in the tropical rainforest of the Colombian Amazon region.
description	Soil enzymes mediate key processes and functions of the soils, such as organic matter decomposition and nutrient cycling in both natural and agricultural ecosystems. Here, we studied the activity of five extracellular soil enzymes involved in the C, N, and P-mineralizing process in both litter and surface soil layer of rainforest in the northwest region of the Colombian Amazon and the response of those soil enzymes to land use change. The experimental study design included six study sites for comparing long-term pasture systems to native forest and regeneration practices after pasture, within the main landscapes of the region, mountain and hill landscapes separately. Results showed considerable enzymatic activity in the litter layer of the forest, highlighting the vital role of this compartment in the nutrient cycling of low fertility soils from tropical regions. With the land use transition to pastures, changes in soil enzymatic activities were driven by the management of pastures, with SOC and N losses and reduced absolute activity of soil enzymes in long-term pastures under continuous grazing (25 years). However, the enzyme activities expressed per unit of SOC did not show changes in C and N-acquiring enzymes, suggesting a higher mineralization potential in pastures. Enzymatic stoichiometry analysis indicated a microbial P limitation that could lead to a high catabolic activity with a potential increase in the use of SOC by microbial communities in the search for P, thus affecting soil C sequestration, soil quality and the provision of soil-related ecosystem services.
format	article
author	Adriana M Silva-Olaya Dúber A Mora-Motta Maurício R Cherubin Daniel Grados Anil Somenahally Fausto A Ortiz-Morea
author_facet	Adriana M Silva-Olaya Dúber A Mora-Motta Maurício R Cherubin Daniel Grados Anil Somenahally Fausto A Ortiz-Morea
author_sort	Adriana M Silva-Olaya
title	Soil enzyme responses to land use change in the tropical rainforest of the Colombian Amazon region.
title_short	Soil enzyme responses to land use change in the tropical rainforest of the Colombian Amazon region.
title_full	Soil enzyme responses to land use change in the tropical rainforest of the Colombian Amazon region.
title_fullStr	Soil enzyme responses to land use change in the tropical rainforest of the Colombian Amazon region.
title_full_unstemmed	Soil enzyme responses to land use change in the tropical rainforest of the Colombian Amazon region.
title_sort	soil enzyme responses to land use change in the tropical rainforest of the colombian amazon region.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/4dc98f1325f7427f9a0898af7421678e
work_keys_str_mv	AT adrianamsilvaolaya soilenzymeresponsestolandusechangeinthetropicalrainforestofthecolombianamazonregion AT duberamoramotta soilenzymeresponsestolandusechangeinthetropicalrainforestofthecolombianamazonregion AT mauriciorcherubin soilenzymeresponsestolandusechangeinthetropicalrainforestofthecolombianamazonregion AT danielgrados soilenzymeresponsestolandusechangeinthetropicalrainforestofthecolombianamazonregion AT anilsomenahally soilenzymeresponsestolandusechangeinthetropicalrainforestofthecolombianamazonregion AT faustoaortizmorea soilenzymeresponsestolandusechangeinthetropicalrainforestofthecolombianamazonregion
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Soil enzyme responses to land use change in the tropical rainforest of the Colombian Amazon region.

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