Soil microbial abundance was more affected by soil depth than the altitude in peatlands

Zhao, Mingzhu; Wang, Ming; Zhao, Yantong; Hu, Nanlin; Qin, Lei; Ren, Zhibin; Wang, Guodong; Ming, Jiang

doi:10.3389/fmicb.2022.1068540

Cited by 14 publications

(6 citation statements)

References 48 publications

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“…Soil nutrients are one factor influencing the abundance of microorganisms in a field. According to prior research [31], dissolved organic carbon and total nitrogen were positively correlated with microbial abundance, whereas pH and soil moisture content were negatively correlated with microbial abundance. The higher the C: N ratio, the greater the total microbial count.…”

Section: Analysis Of Organic C and N In Three Different Land Use In N...mentioning

confidence: 88%

Bacterial abundance of cacao agroforestry, cacao monoculture and secondary forest land uses in north Luwu, South Sulawesi

Nurhikmayani,

Jayadi,

Juita

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Expanding the agricultural sector in North Luwu influences land use modification to enhance plantation output. Continuous land use and clearance can jeopardize the survival of native land vegetation, altering C and N cycles, community composition, population, and soil microbial activity. Microorganisms are essential for maintaining the health and quality of the soil. The abundance of soil microorganisms significantly impacts ecosystem function, so it can help boost agricultural output. This demonstrates that data on the abundance and diversity of soil microorganisms can be used to determine soil fertility. However, more information is needed about the diversity of soil microbes in North Luwu. This study seeks to determine the abundance of soil microorganisms, particularly for various land uses. Random soil samples were collected from cacao monoculture, cacao agroforestry, and secondary forest. The C: N ratio and the total number of microorganisms were then measured in the collected soil samples. Cacao agroforestry with the highest C: N ratio had 1.8 x 108 CFU/g of total soil bacterial, the highest bacterial abundance among the three land covers, followed by secondary forest and cacao monoculture with the lowest C: N ratio and lowest bacterial abundance 2 x 107 CFU/g. These results indicated that the soil C: N ratio influences the bacterial abundance of various land uses. The highest abundance of nitrate-fixing bacteria was found in secondary forests and the lowest in cacao agroforestry, even though the %N indicated by both was the same.

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Section: Analysis Of Organic C and N In Three Different Land Use In N...mentioning

confidence: 88%

Bacterial abundance of cacao agroforestry, cacao monoculture and secondary forest land uses in north Luwu, South Sulawesi

Nurhikmayani,

Jayadi,

Juita

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…The examination of microbial abundance in peatland in Changbai Mountain, China, specifically considering soil depths and physicochemical properties, revealed a notable impact of soil depth on total microbial abundance rather than altitude. These findings suggest that variations in the environment directly influence microbial abundance in peat soils at depths of 5–10 cm [ 11 ]. On the one hand, an increase in temperature has been observed to rise the emission of carbon dioxide, driven by respiratory activity and microbial abundance in peat samples collected in La Guette peatland, France [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Microbiome sequencing revealed the abundance of uncultured bacteria in the Phatthalung sago palm-growing soil

Nutaratat,

Arigul,

Srisuk

et al. 2024

PLoS ONE

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Environmental variations have been observed to influence bacterial community composition, thereby impacting biological activities in the soil. Together, the information on bacterial functional groups in Phatthalung sago palm-growing soils remains limited. In this work, the core soil bacterial community in the Phatthalung sago palm-growing areas during both the summer and rainy seasons was examined using V3-V4 amplicon sequencing. Our findings demonstrated that the seasons had no significant effects on the alpha diversity, but the beta diversity of the community was influenced by seasonal variations. The bacteria in the phyla Acidobacteriota, Actinobacteriota, Chloroflexi, Methylomirabilota, Planctomycetota, and Proteobacteria were predominantly identified across the soil samples. Among these, 26 genera were classified as a core microbiome, mostly belonging to uncultured bacteria. Gene functions related to photorespiration and methanogenesis were enriched in both seasons. Genes related to aerobic chemoheterotrophy metabolisms and nitrogen fixation were more abundant in the rainy season soils, while, human pathogen pneumonia-related genes were overrepresented in the summer season. The investigation not only provides into the bacterial composition inherent to the sago palm-cultivated soil but also the gene functions during the shift in seasons.

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“…Esto se debe a que la comprensión de estas relaciones es fundamental para predecir la respuesta de los ecosistemas del suelo a los cambios ambientales y para desarrollar prácticas de manejo sostenible (Gayan et al, 2023). A pesar de la creciente investigación en el campo, todavía hay brechas significativas en nuestro conocimiento sobre cómo los distintos parámetros fisicoquímicos del suelo influyen en los grupos microbianos funcionales en diferentes bosques tropicales (Zhao et al, 2022). En particular, en el caso de los bosques reservados, que son áreas protegidas de importancia ecológica y conservación, los estudios que abordan estas relaciones son escasos o limitados.…”

Section: Introductionunclassified

Análisis de microorganismos funcionales y su relación con parámetros fisicoquímicos del suelo en un bosque reservado

Sales-Ordoñez,

Aguirre-Escalante,

Cerna-Cueva

et al. 2024

Manglar

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This study addresses the need to understand the presence of functional microorganisms in tropical soils, providing valuable information for conservation and sustainable management. The main objective is to analyze the variability of functional microorganisms at different soil depths and their correlations with physicochemical parameters. To this end, soil samples were collected from 15 random points in a reserved forest and analyzed for physicochemical and microbiological properties at two depths (10 and 20 cm). The following functional microorganisms were quantified: viable aerobes, lactobacilli, actinomycetes, fungi, and nitrogen-fixing bacteria using specific protocols. The non-parametric Wilcoxon test was used to determine differences between depths, and the Pearson correlation coefficient (|ρ| ≥ 0.8) was used to analyze correlations between physicochemical parameters and microorganisms. The results suggest that the abundance of viable aerobic microorganisms, Lactobacillus, Actinomycetes, and Fungi decreases with soil depth, while nitrogen-fixing bacteria show no significant differences. The decrease in abundance is related to factors such as nutrient and oxygen availability and microenvironmental conditions. There is a strong positive correlation between the amount of viable aerobic microorganisms and Lactobacillus with phosphorus content, and a negative correlation between Actinomycetes and clay content. Actinomycetes prefer sandy soils, while Fungi thrive in soils rich in organic matter. The negative correlation between Fungi and Actinomycetes suggests competition for limited resources and possible chemical interactions, such as the production of antibiotic compounds by Actinomycetes. This study demonstrates that a detailed understanding of soil microbiota can offer new opportunities to improve agricultural practices, especially in terms of soil fertility management and environmental sustainability.

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Soil microbial abundance was more affected by soil depth than the altitude in peatlands

Cited by 14 publications

References 48 publications

Bacterial abundance of cacao agroforestry, cacao monoculture and secondary forest land uses in north Luwu, South Sulawesi

Bacterial abundance of cacao agroforestry, cacao monoculture and secondary forest land uses in north Luwu, South Sulawesi

Microbiome sequencing revealed the abundance of uncultured bacteria in the Phatthalung sago palm-growing soil

Análisis de microorganismos funcionales y su relación con parámetros fisicoquímicos del suelo en un bosque reservado

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