Evaluation of soil respiration characteristics to assess heavy-metal effects on soil-microorganisms using glutamic-acid as a substrate
(1988) In Soil Biology & Biochemistry 20(6). p.949-954- Abstract
- Computerized continuous monitoring of soil respiration rates before and during glutamic acid decomposition in heavy metal polluted soils was used to determine four microbial parameters: basal respiration rate, substrate induced respiration rate, lag time before the exponential increase of the soil respiration rate and the specific respiration increment during the exponential phase. Both smelter- and laboratory-contaminated soils were studied.
Basal respiration rate was the parameter most inhibited (54–77%) by heavy metal contamination. Increased soil moisture resulted in increased basal respiration rate, irrespective of pollution level. The substrate-induced respiration rate after the addition of glutamic acid was... (More) - Computerized continuous monitoring of soil respiration rates before and during glutamic acid decomposition in heavy metal polluted soils was used to determine four microbial parameters: basal respiration rate, substrate induced respiration rate, lag time before the exponential increase of the soil respiration rate and the specific respiration increment during the exponential phase. Both smelter- and laboratory-contaminated soils were studied.
Basal respiration rate was the parameter most inhibited (54–77%) by heavy metal contamination. Increased soil moisture resulted in increased basal respiration rate, irrespective of pollution level. The substrate-induced respiration rate after the addition of glutamic acid was strongly correlated with the basal respiration rate (r = 0.85−0.95). The change in specific respiration increment was not related to metal contamination but increased with increasing soil moisture, with an optimum at about 250% H2O based on soil organic matter (oven-dried). Lag time was the parameter best correlated with smelter-induced metal contamination (r = 0.64 and 0.75). Unlike the three other parameters, the lag time was unaffected by soil moisture, irrespective of contamination level. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2226425
- author
- Nordgren, Anders ; Bååth, Erland LU and Söderström, Bengt LU
- organization
- publishing date
- 1988
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Soil Biology & Biochemistry
- volume
- 20
- issue
- 6
- pages
- 949 - 954
- publisher
- Elsevier
- external identifiers
-
- scopus:0024165042
- ISSN
- 0038-0717
- language
- English
- LU publication?
- yes
- id
- 26f89cf0-5327-4004-9433-a580d70d20b5 (old id 2226425)
- alternative location
- http://www.sciencedirect.com/science/article/pii/0038071788901095
- date added to LUP
- 2016-04-01 12:21:09
- date last changed
- 2024-01-08 17:33:11
@article{26f89cf0-5327-4004-9433-a580d70d20b5, abstract = {{Computerized continuous monitoring of soil respiration rates before and during glutamic acid decomposition in heavy metal polluted soils was used to determine four microbial parameters: basal respiration rate, substrate induced respiration rate, lag time before the exponential increase of the soil respiration rate and the specific respiration increment during the exponential phase. Both smelter- and laboratory-contaminated soils were studied.<br/><br> <br/><br> Basal respiration rate was the parameter most inhibited (54–77%) by heavy metal contamination. Increased soil moisture resulted in increased basal respiration rate, irrespective of pollution level. The substrate-induced respiration rate after the addition of glutamic acid was strongly correlated with the basal respiration rate (r = 0.85−0.95). The change in specific respiration increment was not related to metal contamination but increased with increasing soil moisture, with an optimum at about 250% H2O based on soil organic matter (oven-dried). Lag time was the parameter best correlated with smelter-induced metal contamination (r = 0.64 and 0.75). Unlike the three other parameters, the lag time was unaffected by soil moisture, irrespective of contamination level.}}, author = {{Nordgren, Anders and Bååth, Erland and Söderström, Bengt}}, issn = {{0038-0717}}, language = {{eng}}, number = {{6}}, pages = {{949--954}}, publisher = {{Elsevier}}, series = {{Soil Biology & Biochemistry}}, title = {{Evaluation of soil respiration characteristics to assess heavy-metal effects on soil-microorganisms using glutamic-acid as a substrate}}, url = {{http://www.sciencedirect.com/science/article/pii/0038071788901095}}, volume = {{20}}, year = {{1988}}, }