Diurnal and seasonal variations of pCO2 and fluorescent dissolved organic matter (FDOM) in different polluted lakes

Miah, O F; Roy, Abhinaba; Sakib, Abid Azad; Niloy, Nahin Mostofa; Haque, Md. Morshedul; Shammi, Mashura; Tareq, Shafi M.

doi:10.1007/s11356-023-28878-y

Cited by 1 publication

(1 citation statement)

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“…The lower microbial carbon biomass and microbial respiration at deforested sites reduce oxygen supply and carbon substrate diffusion in the soil solution [ 1 , 35 ]. The impact of deforestation on soil physicochemical properties can also be influenced by changes in the chemodiversity of soil DOM compounds [ 36 ]. Microbial biomass and soil organic carbon tend to be concentrated in the primary Amazon rainforest.…”

Section: Discussionmentioning

confidence: 99%

Chemodiversity of Dissolved Soil Organic Matter from Amazon Rainforest as Influenced by Deforestation

Souza,

Araujo,

Cassimiro

et al. 2024

Metabolites

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Many biogeochemical processes are modulated by dissolved organic matter (DOM), but the drivers influencing the chemodiversity of DOM compounds in Amazonian soils are poorly understood. It has also been theorized whether deforestation controls the decline of DOM. In this study, we collected soil samples from thirty sites across different regions of Brazil’s Legal Amazon, and we investigated the trade-offs among soil physical–chemical properties and DOM chemodiversity. We employed optical spectroscopy, Fourier transform ion cyclotron resonance, and multivariate analysis. Our results indicated that, despite variations in land use and soil physical–chemical properties, factors such as the deforested site, geometric mean diameter, weighted average diameter, and soil organic carbon were the main influencers of DOM chemodiversity variation. These findings highlight the importance of considering DOM chemodiversity as closely related to land use and its potential use in developing deforestation models for predicting soil quality decline in Brazil’s Legal Amazon.

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Section: Discussionmentioning

confidence: 99%