Sammanfattning

Mechanisms controlling carbon stabilisation in soil and its feedback to climate change are of considerable importance. Microbial substrate-use ef organic matter. It determines the allocation of substrate towards biosynthetic stabilisation of carbon and for respiratory losses into the atmosphere. Previously, it was observed that substrate-use ef declines with an increase in temperature and that it varies across organic substrates. Yet, our mechanistic understanding of processes causing the temperature sensitivity of substrate-use ef Changes in substrate-use ef communities, (ii) changes in microbial physiology within the same community, or (iii) a combination of both. In the present study, we evaluated the link between microbial community composition and substrate-use ef We found only minor shifts in microbial community composition, despite large differences in substrateuse ef changes in substrate-use ef emphasize that future studies should focus on resolving long-term trade-offs between physiological and community inficiency is an important property during decomposition of soilficiencyficiency is limited.ficiency could be triggered by (i) shifts in the active components of microbialficiency, combining measurements of carbon mineralisation and microbial energetics.ficiencies across incubation temperatures and substrate additions. We conclude that short-termficiency were mainly caused by changes in microbial physiology, butfluences on substrate-use efficiency.

Nyckelord

Carbon-use efficiency; Thermodynamic efficiency; Microbial community composition; Temperature sensitivity; Substrate quality; Carbon-use efficiency Thermodynamic efficiency Microbial community composition Temperature sensitivity Substrate quality Isothermal calorimetry

Publicerad i

Soil Biology and Biochemistry
2017, Volym: 109, sidor: 59-69
Utgivare: Elsevier

SLU författare

• Bölscher, Tobias

  • Institutionen för kemi och bioteknologi, Sveriges lantbruksuniversitet
    

• Herrmann, Anke

  • Institutionen för mark och miljö, Sveriges lantbruksuniversitet
    

Globala målen

SDG15 Skydda, återställa och främja ett hållbart nyttjande av landbaserade ekosystem, hållbart bruka skogar, bekämpa ökenspridning, hejda och vrida tillbaka markförstöringen samt hejda förlusten av biologisk mångfald


UKÄ forskningsämne

Klimatforskning
Mikrobiologi
Markvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1016/j.soilbio.2017.02.005

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/80781