Indirect effect of nitrogen enrichment modified invertebrate herbivory through altering plant community composition in an alpine meadow

2019 ◽  
Vol 12 (4) ◽  
pp. 693-702
Author(s):  
Fei Chen ◽  
Xiang Liu ◽  
Shurong Zhou
Oikos ◽  
2021 ◽  
Author(s):  
Emily Warner ◽  
Bryndís Marteinsdóttir ◽  
Vigdís F. Helmutsdóttir ◽  
Johan Ehrlén ◽  
Sinikka I. Robinson ◽  
...  

2020 ◽  
Vol 287 (1927) ◽  
pp. 20200483
Author(s):  
Yawen Lu ◽  
Xiang Liu ◽  
Fei Chen ◽  
Shurong Zhou

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.


2021 ◽  
Author(s):  
Tanja Strecker ◽  
Annette Jesch ◽  
Dörte Bachmann ◽  
Melissa Jüds ◽  
Kevin Karbstein ◽  
...  

2017 ◽  
Vol 7 (23) ◽  
pp. 10233-10242 ◽  
Author(s):  
Jacob Nabe-Nielsen ◽  
Signe Normand ◽  
Francis K. C. Hui ◽  
Laerke Stewart ◽  
Christian Bay ◽  
...  

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