Cited by 15Soil Carbon and Nitrogen DynamicsMycorrhizal Fungi and Plant InteractionsEnvironmental and biological studies

Carbon dioxide production and oxygen consumption during the early decomposition of different litter types over a range of temperatures in soil‐inoculated quartz sand

Hoffmann, Bastian, Müller, Torsten, Joergensen, Rainer Georg·2010·Journal of Plant Nutrition and Soil Science

Abstract

Oat straw, hay, and alfalfa litter, differing in microbial colonization and recalcitrance, were added to organic matter–free quartz sand (5 mg C [g material]–1) and incubated in the laboratory at 5°C, 10°C, 15°C, 20°C, and 25°C. Different incubation periods were chosen so that theoretically the same amounts of CO 2 would be produced and the same amounts of O 2 would be consumed for each litter type. It was investigated whether Q 10 values (change in respiration rate between two temperatures) increase with decreasing temperature and how much these Q 10 values and also the respiratory quotient (RQ: mol CO 2/mol O 2) depend on the litter type. The sums of CO 2‐C evolved and O 2 consumed, but also the contents of microbial biomass C and microbial biomass N showed a nearly 7‐fold increase in the order oat straw < hay < alfalfa litter. In contrast, the ratio of the fungal cell‐membrane component ergosterol to microbial biomass C was highest in the oat straw (4.1‰) and lowest in the alfalfa litter (0.2‰). This ratio reached a similar level between 5°C and 15°C (1.9‰), significantly higher (p= 0.01) than the level at 20°C (0.9‰). Respiration was similar between 20°C and 25°C, with a mean Q 10 value of 1.9. The use of temperature rate‐modifying factors suggested by the carbon‐turnover model ROTHC revealed that the incubation period for similar respiration rates was underestimated at 5°C and overestimated at 25°C. The lignin‐poor and protein‐rich alfalfa litter showed the highest Q 10 values of the three litter types in the medium temperature range of 10°C to 20°C. In contrast, the lignin‐rich and protein‐poor oat straw showed significantly highest Q 10 values at 5°C and 25°C in comparison with the other two litter types. The RQ was significantly highest in the hay litter (1.05) and in comparison with alfalfa litter (0.97) and oat straw (0.92). Strong temperature‐dependent variations in Q 10 values and respiratory quotients suggest interactions between litter quality, microbial colonization of litter, and temperature, which warrants further investigation.

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Crossref · 10.1002/jpln.200800187

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  • Litter decay is proportional to its nutrient content and inversely proportional to lignin content, and is also controlled by nutrient availability, particularly nitrogen, in the soil.

    “In general terms, litter decay is proportional to its nutrient content and inversely proportional to lignin content [64]; it is also controlled by nutrient availability (particularly N) in the soil [112, 113].”
  • Litter mineralisation depends also on soil fauna, which may vary according to location.

    “Litter mineralisation depends also on the soil fauna [119, 120], which may vary according to location [113].”

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Authors
Hoffmann, B., Müller, T., & Joergensen, R. G.
Affiliations
  • University of Kassel (DE)
  • University of Hohenheim (DE)
Venue
Journal of Plant Nutrition and Soil Science
Publisher
Wiley
Published
2010-04
Volume
173
Issue
2
Pages
217-223
ISSN
  • 1436-8730 (ISSN-L)
  • 1522-2624
OpenAlex
W1986347661
Cited by
15
References
46
Citations by year
2023: 1 · 2020: 1 · 2019: 1 · 2016: 1 · 2015: 1 · 2013: 2 · 2012: 2
FWCI
4.47
Type
journal article
Language
en
Open access
closed
Locations
Journal of Plant Nutrition and Soil Science (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Mycorrhizal Fungi and Plant Interactions
  • Physical Sciences › Environmental Science › Ecology › Environmental and biological studies
Keywords
litter decomposition, soil respiration, CO2 emissions, oxygen consumption, Q10, respiratory quotient, temperature dependence, microbial biomass carbon, microbial biomass nitrogen, ergosterol, fungal membrane lipids, microbial colonization, litter quality, lignin, protein content, oat straw, hay, RothC model, carbon turnover, soil incubation, microbial biomass

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