Microfungal biomass in some tropical forest soils of Orissa, India

Basu, Swapan; Pati, D. P.; Behera, Niranjan

doi:10.1016/0378-1127(92)90109-m

Cited by 8 publications

(7 citation statements)

References 11 publications

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“…In the present study, fungal population and biomass are directly proportional to organic matter (r = 0?73; 0?78, respectively po0?01). The positive relationship of fungal biomass and soil organic carbon in the present study agrees with the results of Basu et al (1993).…”

Section: Resultssupporting

confidence: 95%

Role of Prosopis cineraria on the ecology of soil fungi in Indian desert

Purohit¹,

Mehar²,

Sundaramoorthy³

2002

Journal of Arid Environments

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An investigation was carried out to assess the effect of Prosopis cineraria on some ecological parameters of soil microfungi in an arid region of western Rajasthan. Nine soil samplings were done from the undercanopy of the tree and from the open areas for 2 years. Undercanopy soil of the tree possessed higher population of fungi and fungal biomass as compared to open field. Fungal parameters varied among different sampling periods. Soil samples analysed during different seasons for soil mycoflora revealed maximum fungal populations in rainy months. Fungal biomass and fungal population are directly proportional to organic matter (r = 0?78;Á0?78, respectively). The population of fungi is linearly related to fungal biomass with higher (r = 0?92) correlation at undercanopy as compared to open area (r = 0?72). Soil and climatic factors are responsible for enormous variation in fungal biomass. Organic carbon in the undercanopy is the critical factor that explained 76% variation in fungal biomass. Climatic factors did not affect undercanopy fungal biomass to any measurable extent; however, fungal biomass in the open area varied significantly due to rainfall and the model explained 73% variations in fungal biomass.# 2002 Elsevier Science Ltd.

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Section: Resultssupporting

confidence: 95%

Role of Prosopis cineraria on the ecology of soil fungi in Indian desert

Purohit¹,

Mehar²,

Sundaramoorthy³

2002

Journal of Arid Environments

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“…The low level of microbial biomass indicated poor microbial growth in the deforested barren soil. Lack of a proper soil environment, the decline in the hydrological regime and the poor organic matter level are the factors for such a decline in biomass size in deforested barren site (Dash et al, 1985;Behera et al, 1990;Basu and Behera, 1993;Basu et al, 1992). Further, from the data of basal soil respiration, it could be ascertained that microbial activity was also adversely affected in the deforested barren site.…”

Section: Discussionmentioning

confidence: 99%

“…42). The ®ltrate was analysed for the estimation of microbial biomass C (MB-C) and N (MB-N) using the following formulae: et al, 1987) Microbial biomass N (E N of fumigated soil ± E N of unfumigated soil) Â 0 Á54 (Brookes et al, 1985) Microfungal Biomass Analysis Fresh soil samples collected from 10 cm depth of natural forest and deforested barren site were analysed for microfungal biomass at monthly intervals following Agar ®lm technique (Jones and Mollison, 1948) as mentioned by Basu et al (1992). Five agar ®lms were prepared from each soil sample and 10 observations per ®lm were made.…”

Section: Microbial Biomass Analysismentioning

confidence: 99%

Impact of deforestation on soil physicochemical characteristics, microbial biomass and microbial activity of tropical soil

Sahani

Behera

2001

Land Degrad Dev

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The study dealt with the assessment of the impact of deforestation on tropical soil through a comparative analysis of physicochemical and microbiological parameters of natural forest and a deforested barren site. With signi®cant decline in clay, texturally the soil of the deforested barren site was observed to be different from that of natural forest. Bulk density and porosity data revealed structural deterioration of deforested barren soil. The soil hydrological regime was also adversely affected by the deforestation. Levels of soil organic carbon, total nitrogen, microbial biomass C, N and microfungal biomass also exhibited signi®cant decline in deforested site. Analysis of microbial respiratory quotient (q CO 2 ) was also observed to be impaired in the deforested site.

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“…While the positive relationship between the MBC: MBN ratios and the fungi: bacteria ratios suggest that the former ratio might be used as a surrogate to indicate the relationship between fungi and bacteria or Actinomycetes (Campbell et al, 1991), some reports suggest the MBC: MBN ratio is not a sensitive indicator of shifts in microbial community structure (Joergensen & Scheu, 1999;Friedel et al, 2001). The ratios of soil MBC to SOC and MBN to TN indicate the proportion of C and N sequestered by microbial biomass (Basu et al, 1992). Although soil MBC and MBN were positively correlated with SOC and TN, respectively ( Figure 1A, 2A), the ratios were only parameters for monitoring the change of SOC and TN and cannot be regarded as sensitive indicators of change or damage that has occurred to the soil subsystem (Chander & Brooles, 1993;Garcia et al, 2002).…”

Section: Discussionmentioning

confidence: 97%

Soil organic carbon, nitrogen and microbial properties in contrasting forest ecosystems of north-east China under different regeneration scenarios

Shi

Wang

2008

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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We compared soil organic carbon (SOC), nitrogen (N), and microbial populations and biomass in a natural Pinus koraiensis forest, a secondary (regenerated) forest, and P. koraiensis and Larix gmelinii plantations in Liangshui Nature Reserve, northeast China. Surface SOC, total N and microbial populations and biomass from the P. koraiensis plantation were significantly lower compared to natural and regenerated forests. Although surface SOC from the L. gmelinii plantation was not significantly different from either the natural and secondary forests, surface soil microbial populations and biomass from the L. gmelinii plantation were significantly lower. Differences among sites became less pronounced in subsoils (10Á20 and 20Á30 cm). There were positive and significant correlations between SOC, total N and microbial populations and biomass.The study showed that the tested soil characteristics, both abiotic and biological, from a naturally regenerated forest were more similar to those of an intact, natural forest, than either of the plantations. The P. koraiensis plantation demonstrated more impacts (e.g., lower microbial densities and reduced SOC) than the L. gmelinii plantation. Soil microbial properties appeared to be more sensitive than SOC or total N as indicators of damage to the soil microcosm.Keywords: Natural Pinus koraiensis and natural regeneration forests, Pinus koraiensis and Larix gmelinii plantations, soil organic carbon and total nitrogen, microbial populations and biomass.

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Microfungal biomass in some tropical forest soils of Orissa, India

Cited by 8 publications

References 11 publications

Role of Prosopis cineraria on the ecology of soil fungi in Indian desert

Role of Prosopis cineraria on the ecology of soil fungi in Indian desert

Impact of deforestation on soil physicochemical characteristics, microbial biomass and microbial activity of tropical soil

Soil organic carbon, nitrogen and microbial properties in contrasting forest ecosystems of north-east China under different regeneration scenarios

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