Effect of sieving and storage on soil respiration and Q10

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Title:Main Title: Effect of sieving and storage on soil respiration and Q10
Description:Abstract: Knowledge about spatial patterns of soil respiration (SR) and its temperature sensitivity (Q10) is of emerging relevance for assessing carbon fluxes across the landscape. Related experiments are often conducted under controlled laboratory conditions and usually rely on soil samples, which are sieved and stored. Here, we investigated the effect of sieving and storage on SR and Q10. We took 14 samples from different land use types and soil textures. Samples were sieved to 2 mm at field moist conditions and split into four treatments: sieved/no-storage, sieved/freeze-storage (-18°C), sieved/cold-storage (+4°C), and sieved/dry-storage (+40°C). The storage time was 7 weeks. Intact soil cores were used as a control. The SR was not significantly affected by sieving/no-storage, sieving/freeze-storage, and sieving/cold-storage compared to the control. Yet, sieving/dry-storage significantly increased SR but all samples were similarly affected (r=0.81 for the correlation between SR after sieving/dry-storage and SR in the control). The Q10 of sieving/no-storage (1.94±0.28), sieving/freeze-storage (1.94±0.23), sieving/cold-storage (2.37±0.29), and sieving/dry-storage (2.29±1.35) did not differ significantly from the control (2.12±0.23). All samples responded similar to sieving and storage (r=0.68–0.73 for the correlation between Q10 in each respective treatment and Q10 in the control), with the exception of sieved/dry-storage (r=0.09). We conclude that sieving at field moist conditions and subsequent freeze- or cold-storage is acceptable to derive SR and Q10 for the here reported storage time. Although dry-storage may be acceptable for the comparison of SR between samples, it should be avoided for realistic estimates of SR and for the determination of Q10.
Responsible Party
Creator:Nele Meyer (Author)
Publisher:CRC/TR32 Database (TR32DB)
Publication Year:2018
Topic
TR32 Topic:Soil
Related Subproject:B3
Subject:Keyword: Soil Respiration
File Details
Filename:Table_Database.xlsx
Data Type:Dataset - Dataset
File Size:38 KB
Date:Available: 19.09.2018
Mime Type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Data Format:MS Excel
Language:English
Status:Completed
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Download Permission:Free
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Licence:[TR32DB] Data policy agreement
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Specific Information - Data
Temporal Extent:23.01.2017, 15:18:00 - 23.06.2017, 15:20:00
Subtype:Natural Science Data
Metadata Details
Metadata Creator:Nele Meyer
Metadata Created:19.09.2018
Metadata Last Updated:19.09.2018
Subproject:B3
Funding Phase:3
Metadata Language:English
Metadata Version:V50
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