scholarly journals Effects of nitrogen addition on plant community composition and microbial biomass ecological stoichiometry in a desert steppe in China

2019 ◽  
Vol 43 (5) ◽  
pp. 427-436
Author(s):  
Pan WANG ◽  
Wan-Wan ZHU ◽  
Yu-Bin NIU ◽  
Jin FAN ◽  
Hai-Long YU ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Community Composition ◽  
Plant Community ◽  
Ecological Stoichiometry ◽  
Nitrogen Addition ◽  
Desert Steppe ◽  
Plant Community Composition

Drought effects on microbial biomass and enzyme activities in the rhizosphere of grasses depend on plant community composition

2011 ◽  
Vol 48 (1) ◽  
pp. 38-44 ◽  
Author(s):  
Muhammad Sanaullah ◽  
Evgenia Blagodatskaya ◽  
Abad Chabbi ◽  
Cornelia Rumpel ◽  
Yakov Kuzyakov
Keyword(s):  
Microbial Biomass ◽  
Community Composition ◽  
Plant Community ◽  
Enzyme Activities ◽  
Plant Community Composition ◽  
Drought Effects

scholarly journals Shifts in plant community composition weaken the negative effect of nitrogen addition on community-level arbuscular mycorrhizal fungi colonization

2020 ◽  
Vol 287 (1927) ◽  
pp. 20200483
Author(s):  
Yawen Lu ◽  
Xiang Liu ◽  
Fei Chen ◽  
Shurong Zhou
Keyword(s):  
Community Composition ◽  
Plant Species ◽  
Plant Community ◽  
Direct Effect ◽  
Indirect Effect ◽  
Mycorrhizal Fungi ◽  
Nitrogen Addition ◽  
Community Level ◽  
Colonization Rate ◽  
Plant Community Composition

Nitrogen addition affects plant–arbuscular mycorrhizal fungi (AMF) association greatly. However, although the direct effect of nitrogen addition on AMF colonization has received investigation, its indirect effect through shifts in plant community composition has never been quantified. Based on a 7-year nitrogen addition experiment in an alpine meadow of Qinghai–Tibet Plateau, we investigated the effects of nitrogen addition on plant community, AMF diversity and colonization, and disentangled the direct and indirect effects of nitrogen addition on community AMF colonization. At plant species level, nitrogen addition significantly decreased root colonization rate and altered AMF community composition, but with no significant effect on AMF richness. At plant community level, plant species richness and AMF colonization rate decreased with nitrogen addition. Plant species increasing in abundance after nitrogen addition were those with higher AMF colonization rates in natural conditions, resulting in an increased indirect effect induced by alternation in plant community composition with nitrogen addition, whereas the direct effect was negative and decreased with nitrogen addition. Overall, we illustrate the effect of nitrogen addition and plant species in influencing the AMF diversity, demonstrate how shifts in plant community composition (indirect effect) weaken the negative direct effect of nitrogen addition on community-level AMF colonization rate, and emphasize the importance of plant community-mediated mechanisms in regulating ecosystem functions.

scholarly journals Incorporation of mineral nitrogen into the soil food web as affected by plant community composition

2021 ◽  
Author(s):  
Tanja Strecker ◽  
Annette Jesch ◽  
Dörte Bachmann ◽  
Melissa Jüds ◽  
Kevin Karbstein ◽  
...  
Keyword(s):  
Food Web ◽  
Community Composition ◽  
Plant Community ◽  
Mineral Nitrogen ◽  
Plant Community Composition ◽  
Soil Food Web
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