Aphids decelerate litter nitrogen mineralisation through changes in litter quality

2013 ◽  
Vol 38 (6) ◽  
pp. 627-630 ◽  
Author(s):  
NOBORU KATAYAMA ◽  
ALESSANDRO OLIVERIA SILVA ◽  
OSAMU KISHIDA ◽  
TAKAYUKI OHGUSHI
2007 ◽  
Vol 13 ◽  
pp. 103-105
Author(s):  
T. Osono

Fungal endophytes of grasses affect ecosystem processes through mutualistic interactions with host plants, but how grass endophytes affect litter decomposition remains unclear. In this study, previously published data on litter quality and decomposition of grasses are summarised and effects of fungal endophytes of grasses on litter quality and decomposition are reviewed to discuss possible roles of endophytes in decomposition. Aboveground litters of grasses have relatively low nitrogen (N) and lignin contents and show slow increase of N and lignin contents during decomposition. Endophyte-infected litter have slightly lower N contents than non-infected litter, but the differences so far reported were not statistically significant. A negative effect of grass endophytes on litter decomposition rates was demonstrated, but the effect of endophyte infection on decomposition was not as strong as the effects of other biological and environmental factors. This suggests that grass endophytes have a relatively minor effect of on litter quality and decomposition, but more studies are necessary to verify this tentative conclusion. Keywords: decomposition, lignin, litter, nitrogen


2008 ◽  
Vol 44 (4) ◽  
pp. 392-399 ◽  
Author(s):  
Peng Zhang ◽  
Xingjun Tian ◽  
Xingbing He ◽  
Fuqiang Song ◽  
Lili Ren ◽  
...  

2016 ◽  
Vol 135 (5) ◽  
pp. 849-856 ◽  
Author(s):  
Michiru Kasahara ◽  
Saori Fujii ◽  
Toko Tanikawa ◽  
Akira S. Mori

2013 ◽  
Vol 10 (7) ◽  
pp. 5115-5124 ◽  
Author(s):  
J. Esperschütz ◽  
C. Zimmermann ◽  
A. Dümig ◽  
G. Welzl ◽  
F. Buegger ◽  
...  

Abstract. In initial ecosystems, concentrations of all macro- and micronutrients can be considered as extremely low. Plant litter therefore strongly influences the development of a degrader's food web and is an important source for C and N input into soil in such ecosystems. In the present study, a 13C litter decomposition field experiment was performed for 30 weeks in initial soils from a post-mining area near the city of Cottbus (Germany). Two of this region's dominant but contrasting pioneering plant species (Lotus corniculatus L. and Calamagrostis epigejos L.) were chosen to investigate the effects of litter quality on the litter decomposing microbial food web in initially nutrient-poor substrates. The results clearly indicate the importance of litter quality, as indicated by its N content, its bioavailability for the degradation process and the development of microbial communities in the detritusphere and soil. The degradation of the L. corniculatus litter, which had a low C / N ratio, was fast and showed pronounced changes in the microbial community structure 1–4 weeks after litter addition. The degradation of the C. epigejos litter material was slow and microbial community changes mainly occurred between 4 and 30 weeks after litter addition to the soil. However, for both litter materials a clear indication of the importance of fungi for the degradation process was observed both in terms of fungal abundance and activity (13C incorporation activity)


2007 ◽  
Vol 37 (1-2) ◽  
pp. 72-80 ◽  
Author(s):  
Jan Frouz ◽  
Dana Elhottová ◽  
Václav Pižl ◽  
Karel Tajovský ◽  
Monika Šourková ◽  
...  

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