An inter-laboratory comparison of gaseous and liquid fumigation based methods for measuring microbial phosphorus (P_mic) in forest soils with differing P stocks

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• 作者：Fabian Bergkemper^a ; Else K. Bü ; nemann^b ; ^c ; Simon Hauenstein^d ; Christine Heuck^e ; Ellen Kandeler^f ; Jaane Krü ; ger^g ; Sven Marhan^f ; É ; va Mé ; szá ; ros^b ; Dinah Nassal^f ; Pascal Nassal^f ; Yvonne Oelmann^d ; Chiara Pistocchi^b ; Michael Schloter^a ; ^{schloter@helmholtz-muenchen.de" class="auth_mail" title="E-mail the corresponding author} ; Marie Spohn^e ; Ulrike Talkner^h ; Dan P. Zederer^h ; Stefanie Schulz^a
• 关键词：Microbial phosphorus ; Microbial biomass ; Gaseous fumigation ; Liquid fumigation ; Forest soils
• 刊名：Journal of Microbiological Methods
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：128
• 期：Complete
• 页码：66-68
• 全文大小：239 K

文摘

In an inter-laboratory trial, gaseous (“CFE”) and liquid fumigation (“Resin”) based methods for measuring microbial phosphorus (P_mic) were compared, based on the analysis of soil samples from five forests, which differ in their P stocks. Both methods reliably detected the same P_mic gradient in the different soils. However, when the individual recovery rates of spiked P were taken into account, the “CFE” based methods consistently generated higher P_mic values (factor 2) compared to the “Resin” based approaches.