Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Volltext Shareable Link
Titel (primär) Fire affects the taxonomic and functional composition of soil microbial communities, with cascading effects on grassland ecosystem functioning
Autor Yang, S.; Zheng, Q.; Yang, Y.; Yuan, M.; Ma, X.; Chiariello, N.R.; Docherty, K.M.; Field, C.B.; Gutknecht, J.L.M.; Hungate, B.A.; Niboyet, A.; Le Roux, X.; Zhou, J.;
Journal / Serie Global Change Biology
Erscheinungsjahr 2020
Department BOOEK;
Band/Volume 26
Heft 2
Sprache englisch;
POF III (gesamt) T12;
Supplements https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1111%2Fgcb.14852&file=gcb14852-sup-0001-Suppinfo.doc
Keywords Californian grasslands; climate change; fire; GeoChip; high‐throughput sequencing; microbial communities
Abstract Fire is a crucial event regulating the structure and functioning of many ecosystems. Yet few studies have focused on how fire affects taxonomic and functional diversities of soil microbial communities, along with changes in plant communities and soil carbon (C) and nitrogen (N) dynamics. Here, we analyze these effects in a grassland ecosystem 9 months after an experimental fire at the Jasper Ridge Global Change Experiment site in California, USA. Fire altered soil microbial communities considerably, with community assembly process analysis showing that environmental selection pressure was higher in burned sites. However, a small subset of highly connected taxa was able to withstand the disturbance. In addition, fire decreased the relative abundances of most functional genes associated with C degradation and N cycling, implicating a slowdown of microbial processes linked to soil C and N dynamics. In contrast, fire stimulated above‐ and belowground plant growth, likely enhancing plant–microbe competition for soil inorganic N, which was reduced by a factor of about 2. To synthesize those findings, we performed structural equation modeling, which showed that plants but not microbial communities were responsible for significantly higher soil respiration rates in burned sites. Together, our results demonstrate that fire ‘reboots’ the grassland ecosystem by differentially regulating plant and soil microbial communities, leading to significant changes in soil C and N dynamics.
ID 22890
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=22890
Yang, S., Zheng, Q., Yang, Y., Yuan, M., Ma, X., Chiariello, N.R., Docherty, K.M., Field, C.B., Gutknecht, J.L.M., Hungate, B.A., Niboyet, A., Le Roux, X., Zhou, J. (2020):
Fire affects the taxonomic and functional composition of soil microbial communities, with cascading effects on grassland ecosystem functioning
Glob. Change Biol. 26 (2), 431 - 442