Soil Microbial Activity and Functional Diversity in Primeval Beech Forests

Symochko, Lyudmila; Patyka, V.P.; Symochko, Vitaly; Калініченко, Антоніна

doi:10.17265/2159-581x/2015.06.004

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…This is associated with issues of soil acidity, chemical amelioration, as well as the adverse effects of acidic precipitation on the soil and ecosystems. The parameters characterizing acid-base buffering capacity can be utilized to address overall ecological problems, diagnose soil formation processes, contribute to agricultural soil chemistry, and assess the agroecological state of the soil [Bascompte 2010;Symochko et al, 2015].…”

Section: Introductionmentioning

confidence: 99%

Study of the Impact of Changes in the Acid-Base Buffering Capacity of Surface Sod-Podzolic Soils

Hryhoriv,

Butenko,

Solovei

et al. 2024

J. Ecol. Eng.

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The results of scientific research aimed at studying the impact of land use on the acid-base buffering capacity of gleyed sod-podzolic soils in the Carpathian region were analyzed. The transformation of these indicators was investigated using a comprehensive approach that encompasses the influence of various factors, such as agrotechnological methods and atmospheric precipitation, on the acidity and alkalinity parameters of soil solution.The research results confirm a significant influence of these factors on the acid-base characteristics, emphasizing the need for the development of a scientifically grounded approach to managing fertility and stability of the soil environment in agricultural ecosystems of the Carpathians. The study opens the perspectives for optimizing agrotechnologies and developing effective measures for the rational use of soil resources in this region.

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Section: Introductionmentioning

confidence: 99%

Study of the Impact of Changes in the Acid-Base Buffering Capacity of Surface Sod-Podzolic Soils

Hryhoriv,

Butenko,

Solovei

et al. 2024

J. Ecol. Eng.

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Spatial and temporal variability of soil microbial community in the Carpathian biosphere reserve

SYMOCHKO,

KILIÇ,

DOĞAN

et al. 2023

Preprint

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In this study, the effect of endogenous and exogenous factors on the soil microbiome in the primitive forest ecosystems of the Carpathian Biosphere Reserve (Shyrokoluzhansky massif) in Ukraine was been investigated as temporal variation. These unique ecosystems have a model value for investigating the distinctive soil microbiota, such as the structure of their microbial communities, the number of major ecological groups, and their spatial variability. For this aim, microbial communities in the soil were been researched in the years 2008 and 2018 by field sampling, and georeferenced field data has been collected for mapping process in geographic information systems (GIS). Microbiological studies on soils in the research area were been carried out according to the general methods used in soil microbiology. Spatial distribution of microbial communities was been transformed to interpolated raster maps for the years 2008 and 2018 by utilizing Kriging interpolation method in GIS. The relationships of soil microbial communities with elevation, climate, and soil variables were also investigated by utilizing available climate (annual mean temperature and annual precipitation amount), elevation, and soil (sand-silt-clay, organic matter, pH, and cation exchange capacity) raster maps. Statistical analyses were been conducted by utilizing test of normality (Shapiro–Wilks), descriptive statistics, t-test, correlation, and linear regression analyses. Significant increases in the number of microorganism communities were been detected from 2008 to 2018, with the most significant increases seen in oligotrophs and pedotrophs, followed by ammonifiers and bacteria. While ammonifiers and bacteria constituted the first group similar to each other in terms of the number of microorganisms, the second group was been formed by pedotrophs and oligotrophs. The differences between these two groups of microorganisms also reflected in their relationships with the independent variables. The strongest associations with microorganism communities were been found between elevation, Cation Exchange Capacity (CEC), precipitation and temperature variables. While ammonifiers and bacteria showed a negative relationship with elevation, CEC and precipitation, and a positive relationship with temperature, pedotrophs and oligotrophs showed a positive relationship with altitude, CEC and precipitation and a negative relationship with temperature. Strong relationships were been modeled. Temperature and precipitation values also increased significantly between 2008 and 2018, giving some clues about how global warming affects the geographical distribution of microorganism communities. *Corresponding author. E-mail Addres: kenankilic@ohu.edu.tr

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Impact of Seasonal Variations on the Colonial Populations of Bacteria and Fungi in Soil and on Buried Plant Stems

Nwokoro

Ekwem

2021

Nig. J. Env. Sci. & Tech.

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Forest soils and stems buried in them usually have varying degrees of colonization and abundance of bacteria and fungi. This study was undertaken to determine the effects of seasonal variations on the population of bacteria and fungi isolated from forest soil and on plant stems buried in the soil. Soil sampling and stem burial studies were conducted over a 12-month period in 2019. Serially diluted soil samples were plated on suitable media for bacterial and fungal growth and thereafter counted after incubation. Buried stems were removed from the soil, rinsed and placed in flasks containing suitable media for fungal and bacterial cultivation. Colonial growth was counted after incubation. Soil moisture was highest during the wet season months of July (27.7%), August (23.5 %), September 26.1 %) and October (29 %) whereas the average soil moisture content was lowest in the dry season. Seasonal pH did not significantly affect microbial population levels in the various months. Colony counts for Pseudomonas spp. during the dry season months (January, February, March and April) were very low. Growth of the bacterium showed peaks in the May through October during which counts reached 109 cells per gram of soil except in August with counts of 108 cells per gram of soil. Micrococcus spp. and Bacillus spp. also showed similar trends in colony counts with little variations. Fungi were generally fewer in number than bacteria and only one peak which reached 107 cells/g soil was obtained for Fusarium spp. and Rhizopus spp. in September and October respectively. The density of Trichoderma spp. per gram of soil peaked at 106 cells in June, July, September and October. Counts for Aspergillus spp. was negligible in January, February, March and April but reached 106 cells per gram of soil in June, July and August. The colonization of Pseudomonas spp. on buried plant stem varied between 62% in June to 76% in October while Micrococcus spp. had levels which varied from 65% in May to 84% in June and 72% in October. Fusarium species were found most frequently on the stem every month except in February, March and April. Low colonization of Aspergillus spp. on stems occurred in January, February, March, November and December. Highest numbers of this organism was found in August, September and October. Rhizopus spp. was observed in 85 and 80% of the stem in September and October respectively but lower percentages of colonization occurred in January, February, March and April. In all the dry season months (January-April), all bacterial and fungal populations had low densities but their counts increased in the rainy season. Fungi were generally fewer in number than bacteria in both soil and stem burial experiments.

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Soil Microbial Activity and Functional Diversity in Primeval Beech Forests

Cited by 3 publications

References 20 publications

Study of the Impact of Changes in the Acid-Base Buffering Capacity of Surface Sod-Podzolic Soils

Study of the Impact of Changes in the Acid-Base Buffering Capacity of Surface Sod-Podzolic Soils

Spatial and temporal variability of soil microbial community in the Carpathian biosphere reserve

Impact of Seasonal Variations on the Colonial Populations of Bacteria and Fungi in Soil and on Buried Plant Stems

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