Microbial activity and biomass in four Finnish coniferous forest soils

Spatial variability and effect of heavy metals

Pekka Vanhala, Anu Kapanen, Hannu Fritze, Maarit Niemi

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

In the long-term monitoring of forested areas, there is a need for reference values for soil microbiological variables in different types of forest ecosystem under different pollution loads. Owing to the high spatial variation in microbial flora in the soil and to the uncertainty in the measurements, several replicate samples are needed to give a representative estimate of a study site. Four different soil microbiological variables, soil respiration rate, ATP content, ergosterol content and acid phosphatase activity, were measured in four monitoring areas belonging to the Finnish Integrated Monitoring programme.
The inhibitory effect of Cd, Cu, and Ni on the soil respiration rate was investigated in a laboratory experiment. The biomass-dependent variables correlated very well with each other, but differed from the variables representing microbial activities.
The number of replicate humus samples needed to accurately describe the microbiological status of a study area is clearly site dependent. In general, less than 15 replicates were sufficient to give results with 20% precision at the 5% significance level.
The soil respiration rate clearly decreased in response to the experimental heavy metal addition at all four sites. The EC20 values of soil respiration for Cd, Cu, and Ni were 100–1070, 100–700 and 20–510 mg kg–1 , respectively.
Original languageEnglish
Pages (from-to)287-295
JournalBoreal Environment Research
Volume3
Issue number3
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

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soil respiration
coniferous forest
Heavy Metals
microbial activity
Biomass
forest soils
forest soil
Heavy metals
microbial biomass
coniferous forests
heavy metals
Soil
heavy metal
Soils
biomass
monitoring
Respiratory Rate
ergosterol
soil
pollution load

Cite this

Vanhala, Pekka ; Kapanen, Anu ; Fritze, Hannu ; Niemi, Maarit. / Microbial activity and biomass in four Finnish coniferous forest soils : Spatial variability and effect of heavy metals. In: Boreal Environment Research. 1998 ; Vol. 3, No. 3. pp. 287-295.
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title = "Microbial activity and biomass in four Finnish coniferous forest soils: Spatial variability and effect of heavy metals",
abstract = "In the long-term monitoring of forested areas, there is a need for reference values for soil microbiological variables in different types of forest ecosystem under different pollution loads. Owing to the high spatial variation in microbial flora in the soil and to the uncertainty in the measurements, several replicate samples are needed to give a representative estimate of a study site. Four different soil microbiological variables, soil respiration rate, ATP content, ergosterol content and acid phosphatase activity, were measured in four monitoring areas belonging to the Finnish Integrated Monitoring programme. The inhibitory effect of Cd, Cu, and Ni on the soil respiration rate was investigated in a laboratory experiment. The biomass-dependent variables correlated very well with each other, but differed from the variables representing microbial activities. The number of replicate humus samples needed to accurately describe the microbiological status of a study area is clearly site dependent. In general, less than 15 replicates were sufficient to give results with 20{\%} precision at the 5{\%} significance level. The soil respiration rate clearly decreased in response to the experimental heavy metal addition at all four sites. The EC20 values of soil respiration for Cd, Cu, and Ni were 100–1070, 100–700 and 20–510 mg kg–1 , respectively.",
author = "Pekka Vanhala and Anu Kapanen and Hannu Fritze and Maarit Niemi",
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language = "English",
volume = "3",
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journal = "Boreal Environment Research",
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Microbial activity and biomass in four Finnish coniferous forest soils : Spatial variability and effect of heavy metals. / Vanhala, Pekka; Kapanen, Anu; Fritze, Hannu; Niemi, Maarit.

In: Boreal Environment Research, Vol. 3, No. 3, 1998, p. 287-295.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Microbial activity and biomass in four Finnish coniferous forest soils

T2 - Spatial variability and effect of heavy metals

AU - Vanhala, Pekka

AU - Kapanen, Anu

AU - Fritze, Hannu

AU - Niemi, Maarit

PY - 1998

Y1 - 1998

N2 - In the long-term monitoring of forested areas, there is a need for reference values for soil microbiological variables in different types of forest ecosystem under different pollution loads. Owing to the high spatial variation in microbial flora in the soil and to the uncertainty in the measurements, several replicate samples are needed to give a representative estimate of a study site. Four different soil microbiological variables, soil respiration rate, ATP content, ergosterol content and acid phosphatase activity, were measured in four monitoring areas belonging to the Finnish Integrated Monitoring programme. The inhibitory effect of Cd, Cu, and Ni on the soil respiration rate was investigated in a laboratory experiment. The biomass-dependent variables correlated very well with each other, but differed from the variables representing microbial activities. The number of replicate humus samples needed to accurately describe the microbiological status of a study area is clearly site dependent. In general, less than 15 replicates were sufficient to give results with 20% precision at the 5% significance level. The soil respiration rate clearly decreased in response to the experimental heavy metal addition at all four sites. The EC20 values of soil respiration for Cd, Cu, and Ni were 100–1070, 100–700 and 20–510 mg kg–1 , respectively.

AB - In the long-term monitoring of forested areas, there is a need for reference values for soil microbiological variables in different types of forest ecosystem under different pollution loads. Owing to the high spatial variation in microbial flora in the soil and to the uncertainty in the measurements, several replicate samples are needed to give a representative estimate of a study site. Four different soil microbiological variables, soil respiration rate, ATP content, ergosterol content and acid phosphatase activity, were measured in four monitoring areas belonging to the Finnish Integrated Monitoring programme. The inhibitory effect of Cd, Cu, and Ni on the soil respiration rate was investigated in a laboratory experiment. The biomass-dependent variables correlated very well with each other, but differed from the variables representing microbial activities. The number of replicate humus samples needed to accurately describe the microbiological status of a study area is clearly site dependent. In general, less than 15 replicates were sufficient to give results with 20% precision at the 5% significance level. The soil respiration rate clearly decreased in response to the experimental heavy metal addition at all four sites. The EC20 values of soil respiration for Cd, Cu, and Ni were 100–1070, 100–700 and 20–510 mg kg–1 , respectively.

M3 - Article

VL - 3

SP - 287

EP - 295

JO - Boreal Environment Research

JF - Boreal Environment Research

SN - 1239-6095

IS - 3

ER -