Pyric herbivory increases soil microbial diversity but has a site-dependent effect on soil mesofauna in the mid-term DOI Creative Commons
Leticia San Emeterio, Enrique Baquero, Rodrigo Antón

et al.

Agriculture Ecosystems & Environment, Journal Year: 2023, Volume and Issue: 356, P. 108632 - 108632

Published: June 16, 2023

Woody plant encroachment threatens grassland biomes at a global scale. Pyric herbivory combines prescribed burnings and targeted grazing to restore open habitats has proved be successful in promoting landscape community diversity. However, less is known on the effects of pyric practices belowground biodiversity. We evaluated midterm effect mesofauna, bacteria fungi burns horse regimes implemented encroached by gorse (Ulex gallii Planch.). hypothesized that 1) low-intensity shrub-to shrub had no or transient low magnitude soil microbial diversity, 2) after burning increased mesofauna diversity midterm. established an experiment two shrub-encroached grasslands western Pyrenees with three treatments (no as control, but grazing, grazing). measured properties (DNA-metabarcoding) just fire, vegetation structure, fungi, periods (a year half burning). The response differed among organisms. Fungi were more sensitive than bacteria, both recovered –fungi only presence grazing–. Grazing indexes (∼20 % ∼5 increase, respectively) sites. A burning, burned ungrazed areas 30 control whereas decreased one sites compared control. Since responses vary organisms, wide range management intensities across space time are recommended for maximizing

Language: Английский

The diversity and co-occurrence network of soil bacterial and fungal communities and their implications for a new indicator of grassland degradation DOI Creative Commons
Xuefeng Wu, Jingjing Yang, Hang Ruan

et al.

Ecological Indicators, Journal Year: 2021, Volume and Issue: 129, P. 107989 - 107989

Published: July 20, 2021

Grassland degradation is a retrogressive succession of grassland vegetation, which leads to the loss biodiversity and ecosystem functions. Soil microbiomes play critical roles in functioning services ecosystems, yet little known about how their diversity, structure co-occurrence network characteristics respond degradation. Here, we used lllumina Miseq technique evaluate soil bacterial fungal communities meadow steppe with different degrees Northeastern China. Our results showed that Actinobacteria, Proteobacteria, Chloroflexi Acidobacteria were dominant phyla, while Ascomycota, Basidiomycota, Zygomycota predominant phyla. The relative abundance taxa assigned Gemmatimonadetes, Firmicutes, Deinococcus-Thermus increased increasing degrees, whereas those affiliated Nitrospirae decreasing pattern. Compared bacteria, most phyla decreased gradually along gradient. Bacterial Shannon diversity index possessed similar hump pattern, degree have responses degradation, indicating fungi are more sensitive than bacteria. Both community structures significantly among three sites. Changes best explained by salinity pH. Plant nitrogen concentration aboveground plant tissues also important factors for regulating communities. Co-occurrence analysis revealed microbial positive interactions average strengthen adaptability microorganisms These findings could enhance our understanding formation maintenance degraded grasslands development new indicator management.

Language: Английский

Citations

115
Grassland degradation-induced declines in soil fungal complexity reduce fungal community stability and ecosystem multifunctionality DOI Creative Commons
Shan Luo, G. Kenny Png, Nick Ostle

et al.

Soil Biology and Biochemistry, Journal Year: 2022, Volume and Issue: 176, P. 108865 - 108865

Published: Oct. 29, 2022

Soil microorganisms are major regulators of ecosystem functioning and under threat from human-induced disturbances. Among these threats is grassland degradation, which estimated to affect 49% the area worldwide, threatening biodiversity functioning. Yet, we currently lack an understanding how degradation influences belowground microbial communities, their stability, functioning, effective restoration efforts for recovery important properties. Here, assessed soil fungal network complexity a suite functions along well-characterised gradient on Qinghai-Tibetan Plateau, conducted accompanying microcosm experiment designed test effects stability in communities. We found that with increasing levels communities became less complex were compositionally stable when confronted drought laboratory conditions. Moreover, this degradation-induced reduction community was associated lower multifunctionality. However, multifunctionality failed recover even after ten years restoration. Our results indicate simplification can potentially impair multifunctionality, thereby highlighting need protect restore healthy grasslands • Grassland resulted drought. Degradation-induced Fungal

Language: Английский

Citations

85
Root Exudates Mediate the Processes of Soil Organic Carbon Input and Efflux DOI Creative Commons
Lei Xue,

Yuting Shen,

Jianing Zhao

et al.

Plants, Journal Year: 2023, Volume and Issue: 12(3), P. 630 - 630

Published: Jan. 31, 2023

Root exudates, as an important form of material input from plants to the soil, regulate carbon and efflux plant rhizosphere soil play role in maintaining nutrient balance whole ecosystem. exudates are notoriously difficult collect due their underlying characteristics (e.g., low concentration fast turnover rate) associated methodological challenges accurately measuring root native soils. As a result, up until now, it has been quantify organic most studies. In recent years, contribution ecological effects have paid more attention. However, mechanism mediated by rarely analyzed comprehensively. this review, main processes influencing factors demonstrated. Soil minerals microbes key roles processes. The allocation is influenced relationship between functional traits. Compared with quantity response exudate quality environmental changes affects function more. future, different availability will be quantified, which helpful understand sequestration.

Language: Английский

Citations

54
Effects of alpine grassland degradation on soil microbial community structure and metabolic activity in the Qinghai-Tibet Plateau DOI
Haoran Sun, Jiayi Liu,

Jinghui Wu

et al.

Applied Soil Ecology, Journal Year: 2024, Volume and Issue: 200, P. 105458 - 105458

Published: May 31, 2024

Language: Английский

Citations

10
The loss of above- and belowground biodiversity in degraded grasslands drives the decline of ecosystem multifunctionality DOI

Hanwen Cui,

Cameron Wagg,

Xiangtai Wang

et al.

Applied Soil Ecology, Journal Year: 2021, Volume and Issue: 172, P. 104370 - 104370

Published: Dec. 28, 2021

Language: Английский

Citations

49
Soil Microbial Community Composition and Diversity Analysis under Different Land Use Patterns in Taojia River Basin DOI Open Access
Zhe He, Chenglin Yuan,

Peirou Chen

et al.

Forests, Journal Year: 2023, Volume and Issue: 14(5), P. 1004 - 1004

Published: May 12, 2023

Soil microorganisms are greatly affected by their microenvironment. To reveal the influence of different land use patterns on composition and diversity soil bacterial fungal communities, this study analyzed microbial (bacteria fungi) community under (vegetable land, wasteland, woodland, cultivated land) based 16S rRNA, 18S high-throughput sequencing method in Taojia River Basin. Spearman analysis redundancy (RDA) were used to explore correlation between physicochemical properties composition, a partial least squares path model (PLS-PM) was constructed express causal relationship diversity. The results showed that species richness highest vegetable lowest wasteland. Proteobacteria is dominant phylum (20.69%–32.70%), Actinobacteria class (7.99%–16.95%). fungi woodland highest, while land. Mucoromycota, 29.39%, 41.36%, 22.67%, respectively. Ascomycota (42.16%) Sordariomyetes wasteland Mortierellomycetes Glomeromycetes Mucoromycota woodland. revealed groups communities had significant correlations with pH, clay, sand (p < 0.01). RDA moisture key environmental factors affecting communities. Fungal more than bacteria. These provided theoretical basis for changes river basins.

Language: Английский

Citations

18
Effects of polypropylene microplastics on carbon dioxide dynamics in intertidal mangrove sediments DOI

Xubing Lin,

Lin Shu-ying,

Licheng Peng

et al.

Environmental Pollution, Journal Year: 2024, Volume and Issue: 346, P. 123682 - 123682

Published: Feb. 28, 2024

Language: Английский

Citations

7
Microbial control of soil DOM transformation during the vegetation restoration in the Loess Plateau DOI

Wenxin Chen,

Qianqian Gao, Huaying Hu

et al.

Plant and Soil, Journal Year: 2024, Volume and Issue: 504(1-2), P. 385 - 404

Published: March 20, 2024

Language: Английский

Citations

6
Overgrazing on unmanaged grassland interfered with the restoration of adjacent grazing-banned grassland by affecting soil properties and microbial community DOI Creative Commons

Mengchao Fang,

Guang Lu, Shuping Zhang

et al.

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 14

Published: Jan. 4, 2024

A "grazing ban" policy has been implemented in some pastoral areas China to fence degraded grasslands for restoration. However, fencing increased grazing pressures unmanaged grasslands. Based on the mechanism of negative edge effect, we investigated whether overgrazing grassland interfered with restoration adjacent grazing-banned by affecting soil properties and microbial community using a sample Hulun Buir Inner Mongolia, order optimize policy. Plant were sampled 30 m away from (UM) (adjacent UM) 30-60 (not (F-30 F-60 m). The species richness diversity plant communities ASV number fungal significantly decreased F-30 UM, Simpson index bacterial compared m. abundance fungi involved organic matter decomposition stress-resistant bacteria increased, while litter UM simplification water total carbon contents can explain variations both results PLS-PM show that changes function guilds may affect those changing contents. These indicate community. should be adjusted periodically avoid effects.

Language: Английский

Citations

5
Soil microbial diversity and composition response to degradation of the alpine meadow in the southeastern Qinghai-Tibet Plateau DOI

Mingfang Jiang,

Jiayi Liu, Haoran Sun

et al.

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(17), P. 26076 - 26088

Published: March 16, 2024

Language: Английский

Citations

5