Soil bacterial biomass, activity, phospholipid fatty acid pattern, and pH tolerance in an area polluted with alkaline dust deposition
- Lund Univ. (Sweden)
- Finnish Forest Research Inst., Vantaa (Finland)
In a study of response of soil microbes to emissions from an iron and steel works, microbial biomass in the humus horizon of the forest was similar in polluted sites (soil pH of 6.6) and unpolluted areas (soil pH of 4.1). However, drastic changes in the microfungal species composition in polluted areas was also found in an earlier study. The extend of changes in the bacterial community is more difficult to study. Phospholipid fatty acid (PLFA) patterns of a soil can overcome this since different groups of bacteria are characterized by specific PFLA profiles. A changed tolerance pattern of the bacteria, examined through the thymidine incorporation technique, can also be used. This study investigates the effect of increased pH on the biomass, growth rate, PLFA pattern, and pH tolerance of the soil bacterial community. The effects of alkaline pollution are very similar to the effects found after liming a forest soil including the following: increased bacterial activity; decreased turnover time; increase in gram-negative bacterial fatty acids and decrease in gram-positive bacterial fatty acids; altered pH tolerance.
- OSTI ID:
- 6191359
- Journal Information:
- Applied and Environmental Microbiology; (United States), Vol. 58:12; ISSN 0099-2240
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
BACTERIA
GROWTH
DEPOSITION
BIOLOGICAL EFFECTS
METAL INDUSTRY
AIR POLLUTION
SOILS
BIOMASS
CARBOXYLIC ACIDS
ENVIRONMENTAL EFFECTS
FORESTS
HUMUS
IRON
LIMING
MICROORGANISMS
PH VALUE
TOLERANCE
ELEMENTS
ENERGY SOURCES
INDUSTRY
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
POLLUTION
RENEWABLE ENERGY SOURCES
TRANSITION ELEMENTS
560300* - Chemicals Metabolism & Toxicology
540220 - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)