LTER Data Catalog

Soil Microbial Biomass via Chloroform Fumigation

Soil microbial biomass carbon and nitrogen as determined by chloroform fumigation – incubation.

The standard data use policy applies to the this dataset

Context:

The purpose of these studies is to determine patterns of microbial biomass dynamics in crop, successional and forest communities.

This project consists of two studies involving microbial biomass determination in soil samples taken from the Main Cropping System Experiment (KBS004): Chloroform Fumigation-Incubation; Soil Microbial Biomass C and N, and Epifluorescence Microscopy and Image Analysis; Soil Microbial Biovolume and C. The data for both studies are generated from subsets of the same soil samples, collected from treatments 1 – 8, CF, DF, and SF. See the descriptor (KBS004) for treatment descriptions. Samples are collected approximately monthly (during ice-free conditions) or annually (varies by year) from 5 sampling stations in each of 6 replicate plots per treatment; exceptions are treatment 8 (four reps), and treatments CF, DF, and SF (three reps each). For experiment descriptions, protocols, and data, see individual datasets.

Samples were collected by K. Klingensmith in 1989 and by S. Halstead in other years. D. Harris performed lab analysis, data entry, data analysis, and data submission. Original data files not available; contact the LTER data manager with questions. The data currently available was derived from web-based files which were last reviewed by D. Harris on 10-01-1997 and may be available from archives.

Experiment: Main Cropping System Experiment (MCSE)
Temporal Coverage: 1989-04-24 to 1996-05-07
Dataset: KBS011
Datatable ID: KBS011-001.21
Related Tables:
Personnel:
Last Updated 2010-03-23
Metadata
Variate Description Units
date date of sampling
trt cropping system treatment
rep replicate block
stn replicate station within block
co2 c CO2 mineralized in 10 day incubation of unfumigated soil at 25 Celsius micrograms/gram
co2 f CO2 mineralized in 10 day incubation of chloroform fumigated soil at 25 Celsius micrograms/gram
nc N mineralized in 10 day incubation of unfumigated soil at 25 C micrograms/gram
nf N mineralized in 10 day incubation of chloroform fumigated soil at 25 C micrograms/gram
cfibio c microbial biomass C micrograms/gram
cfibio n microbial biomass N micrograms/gram
Year year in which date occurs

Data Excerpt

Date Trt Rep Stn Co2 C Co2 F Nc Nf Cfibio C Cfibio N Year
1989-04-24 T1 R1 C 146.7 147.1 -2.55 14.32 172 37.7 1989
1989-04-24 T1 R2 C 193 194 -1.4 16.26 228 44.8 1989
1989-04-24 T1 R3 C 163.4 206 13.33 12.02 265 30.7 1989
1989-04-24 T1 R4 C 192.6 181.2 -1.44 15.88 206 42.2 1989
1989-04-24 T1 R5 C 253.6 244.5 6.09 18.52 281 47.7 1989
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