Assessment of soil microbial functional diversity in a coppiced forest system

2012 ◽  
Vol 62 ◽  
pp. 115-123 ◽  
Author(s):  
Armando Pignataro ◽  
M. Cristina Moscatelli ◽  
Stefano Mocali ◽  
Stefano Grego ◽  
Anna Benedetti
Keyword(s):  
Functional Diversity ◽  
Microbial Functional Diversity ◽  
Soil Microbial

scholarly journals Functional Diversity of the Soil Culturable Microbial Community in Eucalyptus Plantations of Different Ages in Guangxi, South China

Forests ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 1083
Author(s):  
Xiu Lan ◽  
Hu Du ◽  
Wanxia Peng ◽  
Yongxian Liu ◽  
Zhilian Fang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Carbon Source ◽  
Functional Diversity ◽  
Soil Microbes ◽  
Total Carbon ◽  
Soil Microbial Community Structure ◽  
Microbial Functional Diversity ◽  
Soil Microbial ◽  
Eucalyptus Plantations ◽  
Different Ages

We selected five different ages of eucalyptus plantation sites to understand the culturable microbial functional diversity and the ecological functions of the soil from the eucalyptus plantations in Guangxi. We investigated the carbon source metabolic activity and diversity features of surface soil microbes using the Biolog EcoPlate method (Biolog Inc., Hayward, CA, USA), along with the microbial functional diversity and physicochemical properties of the soil. The results suggest that the carbon source utilization capacity of the soil microbes at various forest ages manifested as 3-year-old > 5-year-old > 2-year-old > 1-year-old > 8-year-old. The abundance, Shannon–Weiner, Pielou, Simpson, and McIntosh diversity indices of the soil microbes initially increased and then decreased with further increase in forest age, with the highest levels in 3- and 5-year-old forests. As per the heatmap analysis, the 3-year-old forest could metabolize the most carbon source species, while the 1- and 8-year-old forests could metabolize the least. Carbohydrates were the most frequently metabolized carbon source. The principal component analysis (PCA) shows that PC1 and PC2 extracted from the 31 factors have 52.42% and 13.39% of the variable variance, respectively. Carbohydrates contributed most to PCA, followed by amino acids and carboxylic acids, and phenolic acids and amines, the least. Canonical correspondence analysis shows that total carbon, alkali-hydrolyzable nitrogen, total nitrogen, total potassium, and pH negatively correlate with soil microbial functional diversity, whereas total and available phosphorus positively correlate with it. To sum up, the soil microbial community structure of eucalyptus plantations at various ages reflects the soil environmental conditions and nutrient availability, which is of great significance in the efficient management and high-quality operation of their plantations in Guangxi.

Soil microbial functional diversity patterns and drivers along an elevation gradient on Qinghai-Tibet, China

2018 ◽  
Vol 38 (16) ◽  
Author(s):  
王颖 WANG Ying ◽  
宗宁 ZONG Ning ◽  
何念鹏 HE Nianpeng ◽  
张晋京 ZHANG Jinjing ◽  
田静 TIAN Jing ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Elevation Gradient ◽  
Microbial Functional Diversity ◽  
Diversity Patterns ◽  
Soil Microbial

Degradation of chlorpyrifos in laboratory soil and its impact on soil microbial functional diversity

2009 ◽  
Vol 21 (3) ◽  
pp. 380-386 ◽  
Author(s):  
Hua FANG ◽  
Yunlong YU ◽  
Xiaoqiang CHU ◽  
Xiuguo WANG ◽  
Xiaoe YANG ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Microbial Functional Diversity ◽  
Soil Microbial

scholarly journals Soil Microbial Functional Diversity Responses to Different Revegetation Types in Baishilazi Nature Reserve

2019 ◽  
Vol 28 (5) ◽  
pp. 3675-3686 ◽  
Author(s):  
Jiaojiao Deng ◽  
Yongbin Zhou ◽  
Xuejiao Bai ◽  
Jiyao Luo ◽  
You Yin ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Nature Reserve ◽  
Microbial Functional Diversity ◽  
Soil Microbial

Soil microbial functional diversity along an elevation gradient in Northwestern Caucasus

2020 ◽  
Author(s):  
Kristina Ivashchenko ◽  
Alexandra Seleznyova ◽  
Sofia Sushko ◽  
Anna Zhuravleva ◽  
Alexander Tronin ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Plant Diversity ◽  
Altitudinal Gradient ◽  
Diversity Index ◽  
Elevation Gradient ◽  
Distribution Patterns ◽  
Microbial Functional Diversity ◽  
Soil Microbial ◽  
Northwestern Caucasus ◽  
Edaphic Properties

<p>In contrast to taxonomic diversity of soil microbiome, the distribution patterns of functional diversity for various ecosystems, including along an altitudinal gradient, is poorly understood. Consequently, the study focuses on finding out the spatial distribution features of microbial functional diversity in mountainous soils along elevation through forests and meadows ecosystems. We hypothesized that soil microbial functional diversity is increasing along the altitudinal gradient in conjunction with plant diversity. In Northwestern Caucasus (Karachay-Cherkess Republic, Russia) the north-eastern mountain slope was studied across mixed, fir and deciduous forests, subalpine and alpine meadows located from 1260 to 2480 m above sea level. Twelve plots (0.25 m<sup>2</sup> each) were randomly chosen within each ecosystem (total 60). Plant species composition and Shannon plant diversity index (H) were assessed for the plots. Topsoil samples (0-10 cm) were taken from the plots in August for assessment microbial functional diversity through community level physiological profile (CLPP). It was determined by microbial respiration response on amino, carboxylic, phenolic acids and carbohydrates (MicroResp). Shannon's functional diversity index based on the CLPP (H<sub>CLPP</sub>) was calculated. Edaphic properties as moisture, temperature, pH, total carbon (C) and nitrogen (N) contents were determined as possible drivers of CLPP. As expected, plant diversity was increased along the elevation gradient with the lowest H value in the mixed forest (0.6) and the highest – in the alpine meadow (1.9). The H<sub>CLPP</sub> did not differ among studied ecosystems and reached on average 2.4 for each. Microbial respiration response on amino acids was mainly contributed to dissimilarities between studied ecosystems and increased on average by 1.3 times with elevation from mixed to fir and deciduous forests. Along this elevation row, the soil N content was the most significant driver compared to other edaphic properties. Among subalpine and alpine meadows the differences between microbial responses on studied carbon substrates were not found.</p><p>Considering that elevation didn’t contribute to distribution patterns of soil H<sub>CLPP</sub> at the inter-ecosystems level, consequently, the hypothesis of our study was rejected. Plant diversity was not related to H<sub>CLPP</sub> as expected. Meanwhile, the distribution patterns of soil microbial community, utilizing amino acids, along the altitudinal gradient was found.</p><p>The current research was financially supported by RFBR No 20-34-70121</p>

Soil microbiological properties during decomposition of crop residues under conventional and zero tillage

2004 ◽  
Vol 84 (4) ◽  
pp. 411-419 ◽  
Author(s):  
N. Z. Lupwayi ◽  
G. W. Clayton ◽  
J. T. O’Donovan ◽  
K. N. Harker ◽  
T. K. Turkington ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Microbial Diversity ◽  
Microbial Activity ◽  
Soil Quality ◽  
Functional Diversity ◽  
Crop Residue ◽  
Crop Residues ◽  
Zero Tillage ◽  
Microbial Functional Diversity ◽  
Soil Microbial

Field experiments were conducted to correlate decomposition of red clover (Trifolium pratense) green manure (GM), field pea (Pisum sativum), canola (Brassica rapa) and wheat (Triticum aestivum) residues, and soil organic C (SOC), under zero tillage and conventional tillage, with soil microbial biomass C (MBC), bacterial functional diversity and microbial activity (CO2 evolution). A greenhouse experiment was also conducted to relate crop residue quality to soil microbial characteristics. Zero tillage increas ed MBC only in the 0- to 5-cm soil layer. Soil MBC decreased more with soil depth than either microbial diversity or total SOC. Legume GM residues induced greater initial CO2 evolution than the other residues. This means that results that do not include the initial flush of microbial activity, e.g., by sampling only in the season(s) following residue placement, probably underestimate gas evolution from legume crop residues. Residue N, P and K contents were positively correlated with microbial functional diversity and activity, which were positively correlated with crop residue decomposition. Therefore, microbial functional diversity and activity were good indicators of microbial decomposition processes. Residue C/N and C/P ratios (i.e., high C content) were positively correlated with MBC, which was positively correlated with SOC. Therefore, soil MBC was a good indicator of soil quality (soil organic matter content). Key words: Biological soil quality, crop residues, crop rotation, microbial activity, microbial biomass, microbial diversity

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