Changes in soil microbial community structure and function after afforestation depend on species and age: Case study in a subtropical alluvial island

2018 ◽  
Vol 625 ◽  
pp. 1423-1432 ◽  
Author(s):  
Hongzhang Kang ◽  
Huanhuan Gao ◽  
Wenjuan Yu ◽  
Yang Yi ◽  
Yun Wang ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Microbial Community Structure ◽  
Soil Microbial Community ◽  
Structure And Function ◽  
Soil Microbial Community Structure ◽  
Soil Microbial ◽  
And Function

Soil microbial community structure and function relationships: A heat stress experiment

2015 ◽  
Vol 86 ◽  
pp. 121-130 ◽  
Author(s):  
Wassila Riah-Anglet ◽  
Isabelle Trinsoutrot-Gattin ◽  
Fabrice Martin-Laurent ◽  
Emilie Laroche-Ajzenberg ◽  
Marie-Paule Norini ◽  
...  
Keyword(s):  
Heat Stress ◽  
Community Structure ◽  
Microbial Community ◽  
Microbial Community Structure ◽  
Soil Microbial Community ◽  
Structure And Function ◽  
Soil Microbial Community Structure ◽  
Soil Microbial ◽  
And Function ◽  
Stress Experiment

scholarly journals Structural and Functional Dynamics of Soil Microbes following Spruce Beetle Infestation

2019 ◽  
Vol 86 (3) ◽  
Author(s):  
Gordon F. Custer ◽  
Linda T. A. van Diepen ◽  
William L. Stump
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Bark Beetle ◽  
Microbial Community Structure ◽  
Soil Microbial Community ◽  
Tree Mortality ◽  
Structure And Function ◽  
Soil Microbial Community Structure ◽  
Soil Microbial ◽  
And Function

ABSTRACT As the range of bark beetles expands into new forests and woodlands, the need to understand their effects on multiple trophic levels becomes increasingly important. To date, much attention has been paid to the aboveground processes affected by bark beetle infestation, with a focus on photoautotrophs and ecosystem level processes. However, indirect effects of bark beetle on belowground processes, especially the structure and function of soil microbiota remains largely a black box. Our study examined the impacts of bark beetle-induced tree mortality on soil microbial community structure and function using high-throughput sequencing of the soil bacterial and fungal communities and measurements of extracellular enzyme activities. The results suggest bark beetle infestation affected edaphic conditions through increased soil water content, pH, electrical conductivity, and carbon/nitrogen ratio and altered bulk and rhizosphere soil microbial community structure and function. Finally, increased enzymatic activity suggests heightened microbial decomposition following bark beetle infestation. With this increase in enzymatic activity, nutrients trapped in organic substrates may become accessible to seedlings and potentially alter the trajectory of forest regeneration. Our results indicate the need for incorporation of microbial processes into ecosystem level models. IMPORTANCE Belowground impacts of bark beetle infestation have not been explored as thoroughly as their aboveground counterparts. In order to accurately model impacts of bark beetle-induced tree mortality on carbon and nutrient cycling and forest regeneration, the intricacies of soil microbial communities must be examined. In this study, we investigated the structure and function of soil bacterial and fungal communities following bark beetle infestation. Our results show bark beetle infestation to impact soil conditions, as well as soil microbial community structure and function.

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