Soil enzymatic activity in Brazilian biomes under native vegetation and contrasting cropping and management

Barbosa, Julierme Zimmer; Pôggere, Giovana Clarice; Corrêa, Rodrigo Studart; Hungría, Mariangela; Mendes, I. C.

doi:10.1016/j.apsoil.2023.105014

Cited by 8 publications

(8 citation statements)

References 89 publications

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“…In the dry season, soils were sampled in October following the peak of leaf fall and after several months of accumulation of plant litter and root exudates had accumulated for several months (Anaya et al, 2007), which increase the OM content of the soil and in the process mitigate the conditions to which soil microbes are exposed, particularly soil moisture. Both urease and β-glucosidase are extracellular enzymes, meaning they can continue to function as long as some moisture remains, even after the cells that synthesized them are gone (Barbosa et al, 2023). Strong correlations between most soil properties and all three enzymes indicated the importance of these parameters for enzyme function in the dry season.…”

Section: Enzymatic Activity Declines With Ecosystem Degradationmentioning

confidence: 99%

“…Soil enzyme activity is related to SOM fluxes and can provide a useful indicator of soil function in response to disturbance (Barbosa et al, 2023). Among the myriad biotic (e.g., microbial community structure and abundance, plant inputs) and abiotic (e.g., organomineral interactions, soil and climatic conditions, chemical quality of C inputs) factors influencing SOM dynamics, soil enzyme activity plays a prominent role (Panettieri et al, 2022).…”

mentioning

confidence: 99%

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Ecosystem function associated with soil organic carbon declines with tropical dry forest degradation

de Sosa,

Carmona,

Panettieri

et al. 2024

Land Degrad Dev

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Forest degradation is increasingly recognized as a major threat to global biodiversity and the multiple ecosystem services forests provide. This study examined the impacts of forest degradation on soil quality and function in a seasonally dry tropical forest (SDTF) of Ecuador. Previous studies of SDTFs have focused on the impacts of land‐use conversion on soils, while this study assessed the less visible but pervasive effects of degradation. We compared soil physical–chemical properties, enzymatic activity, particulate organic carbon (POC) and mineral‐associated organic carbon (MAOC) along a gradient of SDTF degradation in both the dry and rainy season. Our findings showed a consistent and steady reduction in soil quality (total C and N) and function (dehydrogenase and β‐glucosidase activity) that paralleled the loss of vegetative structure and diversity along the degradation gradient. Soil physical–chemical properties were less variable and enzymatic activity was generally higher in the dry season compared to the rainy season. We also showed for the first time a significant and uniform decrease in POC and MAOC with degradation in SDTF. The relative proportion of these two components was constant along the gradient except in the most degraded state (arid land), where POC was higher in proportion to MAOC, suggesting that extreme forest degradation may cause this ecosystem to cross a functional tipping point. These findings address an important knowledge gap for SDTFs by showing a consistent loss of soil quality and functionality with degradation, and suggest that extreme degradation can result in an alternate state with compromised resilience.

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Section: Enzymatic Activity Declines With Ecosystem Degradationmentioning

confidence: 99%

mentioning

confidence: 99%

Ecosystem function associated with soil organic carbon declines with tropical dry forest degradation

de Sosa,

Carmona,

Panettieri

et al. 2024

Land Degrad Dev

View full text Add to dashboard Cite

show abstract

“…For the dry season, soils were sampled in October following the peak of leaf fall and after several months of accumulation of plant litter and exudates (Anaya et al, 2007), which increase the OM content of the soil and in the process mitigate the conditions to which soil microbes are exposed, particularly soil moisture. Both urease and β-glucosidase are extracellular enzymes, meaning they can continue to function as long as some moisture remains, even after the cells that synthesized them are gone (Barbosa et al 2023). Strong correlations between most soil properties and the three enzymes indicated the importance of these parameters for enzyme function in the dry season, whereas total N and WSC were highly correlated with enzyme function in the rainy season, which were likely related to OM flush events caused by rainfall (Murphy and Lugo, 1986;Oliveria Silva et al, 2019).…”

Section: Enzymatic Activity Declines With Ecosystem Degradationmentioning

confidence: 99%

“…Soil enzyme activity is related to SOM fluxes and can provide a useful indicator of soil function in response to disturbance (Barbosa et al, 2023). Among the myriad biotic (e.g., microbial community structure and abundance, plant inputs) and abiotic (e.g., organo-mineral interactions, soil and climatic conditions, chemical quality of C inputs) factors influencing SOM dynamics, soil enzyme activity plays a prominent role (Panettieri et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Ecosystem function associated with soil organic carbon declines with tropical dry forest degradation

Sosa,

Carmona,

Panettieri

et al. 2023

Preprint

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Forest degradation is increasingly recognized as a major threat to global biodiversity and ecosystems’ capacity to provide ecosystem services. This study examined the impacts of forest degradation on soil quality and function in a seasonally dry tropical forest (SDTF) of Ecuador. We compared soil physical-chemical properties, enzymatic activity, particulate organic carbon (POC) and mineral-associated organic carbon (MAOC) along a gradient of SDTF degradation in the dry and rainy season. Our findings showed a consistent and steady reduction in soil quality (total C and N) and function (dehydrogenase and β-glucosidase activity) that paralleled the loss of vegetative structure and diversity along the degradation gradient. Soil physical-chemical properties were less variable and enzymatic activity was generally higher in the dry season compared to the rainy season. We also showed for the first time a significant and uniform decrease in POC and MAOC with ecosystem degradation in a SDTF. The relative proportion of these two components was constant along the gradient except for the most degraded state (arid land), where POC was higher in proportion to MAOC, suggesting that a functional tipping point may be crossed with extreme forest degradation. These findings address an important knowledge gap for SDTFs by showing a consistent loss of soil quality and functionality with degradation and suggest that extreme degradation can result in an alternate state with compromised resilience.

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“…Usualmente a maior atividade enzimática é vinculada a maiores valores de CBM devido à capacidade conjunta em controlar a taxa de decomposição do carbono orgânico do solo (Ferreira et al, 2011;Zuber & Villamil, 2016;Ren et al, 2017;Barbosa et al, 2023), porém, essa relação nem sempre é óbvia, uma vez que os microrganismos e processos de degradação dos componentes orgânicos do solo são altamente diversos (Salazar et al, 2011). Além disso, nem toda enzima do solo é constitutiva da estrutura celular dos microrganismos, sendo a maioria aqui avaliadas encontradas extracelularmente e, por isso, a maior atividade enzimática não necessariamente está sempre vinculada à maior quantidade de CBM, conforme visto também em outros estudos (Moorhead et al, 2013;de Melo et al, 2020).…”

Section: Atividade Enzimática E Carbono Da Biomassa Microbiana Do Solounclassified

Efeitos da compostagem termofílica industrial na qualidade do lodo de esgoto e na dissipação de resistência antimicrobiana em solos

Mendonça

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Efeitos da compostagem termofílica industrial na qualidade do lodo de esgoto e na dissipação de resistência antimicrobiana em solos / Rafael Santana Mendonça. --versão revisada de acordo com a Resolução CoPGr 6018 de 2011. Piracicaba, 2024. 93 p. Dissertação (Mestrado) --USP / Escola Superior de Agricultura "Luiz de Queiroz". 1. Biossólidos 2. Microbioma 3. Resistoma 4. Poluição do solo 5. Agricultura sustentável I. Título

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Soil enzymatic activity in Brazilian biomes under native vegetation and contrasting cropping and management

Cited by 8 publications

References 89 publications

Ecosystem function associated with soil organic carbon declines with tropical dry forest degradation

Ecosystem function associated with soil organic carbon declines with tropical dry forest degradation

Ecosystem function associated with soil organic carbon declines with tropical dry forest degradation

Efeitos da compostagem termofílica industrial na qualidade do lodo de esgoto e na dissipação de resistência antimicrobiana em solos

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