Surface and subsurface microbial biomass, community structure and metabolic activity as a function of soil depth and season

Blume, Elena; Bischoff, Marianne; Reichert, José Miguel; Moorman, Thomas B.; Konopka, Allan; Turco, Ronald F.

doi:10.1016/s0929-1393(02)00025-2

Cited by 320 publications

(234 citation statements)

References 41 publications

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“…These B horizons have a lower microbial activity (DHA) compared to those of the A horizon. This is in general agreement with earlier studies concerning soil depth and microbial activity (Blume et al, 2002;Fierer et al, 2003). In general, factors such as pH, nutrient status, soil organic matter (SOM) tend to change with depth (Aon and Colaneri, 2001;Taylor et al, 2002;Eilers et al, 2012;Rumple and Kögel-Knabner, 2011).…”

Section: Dehydrogenase Activities In Natural Soils and Tailings Matersupporting

confidence: 92%

“…In general, factors such as pH, nutrient status, soil organic matter (SOM) tend to change with depth (Aon and Colaneri, 2001;Taylor et al, 2002;Eilers et al, 2012;Rumple and Kögel-Knabner, 2011). Along this gradient microbial biomass also tend to decline (Blume et al, 2002;Fierer et al, 2003;Šantrůčková et al, 2010), in addition a shift in the microbial community composition occurs (Eilers et al, 2012;Ekelund et al, 2001;Hartmann et al, 2009). The lower microbial activity of exposed argic B horizons indicates a degree of degradation that the horizon underwent subsequently to its exposure.…”

Section: Dehydrogenase Activities In Natural Soils and Tailings Matermentioning

confidence: 99%

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Humusica 2, article 16: Techno humus systems and recycling of waste

Zanella

Ponge

Guercini

et al. 2018

Applied Soil Ecology

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Techno humus systems correspond to man-made topsoils under prominent man influence. They may be purposely\ud conceived for supporting agricultural activities or dumping of waste products, sometimes abandoned to\ud an unknown evolution. Both categories needed a more scientific frame. This is the reason we classified them as\ud morpho-functional humus systems. Improving agricultural soils with organic waste products is an ancestral\ud practice. We present four examples of techno humus systems purposely created for supporting plant growth.\ud Considering a simple home-made composting pile, we give a few basic notions about the biological functioning\ud of these artificial humus systems. Humipedon functioning and structuration are similar to those observed in\ud natural humus systems. Using even animal manure, we illustrate how to manage larger compost piles of waste\ud for application in farming areas. Composting waste that contains animal proteins needs a more careful measurement\ud of the temperature of the pile and a longer period of elevated temperature in the core of the pile.\ud Mulching of pruning residues is presented in a large urban context. The use of mulch must take into account\ud quality and composition of woody material. The lack of nutrients in some residues has to be compensated by a\ud moderate use of appropriate mineral fertilizers. Municipal solid waste, anaerobic digestion residues (grape remains)\ud and spent mushroom compost, eventually mixed with mineral fertilizers, have been tested in horticulture.\ud Benefits and drawbacks are listed for each experiment, with the evolution of carbon storage along 8\ud years of horticultural practice. Finally, we present an example of “dump” humus system. Mine tailing wastes\ud represent a huge problem in many countries. Pointing on their microbial activity, we show that they must be\ud seen as manageable living humipedons, not as piles of inert rocky material

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Section: Dehydrogenase Activities In Natural Soils and Tailings Matersupporting

confidence: 92%

Section: Dehydrogenase Activities In Natural Soils and Tailings Matermentioning

confidence: 99%

Humusica 2, article 16: Techno humus systems and recycling of waste

Zanella

Ponge

Guercini

et al. 2018

Applied Soil Ecology

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“…Blume et al (2002), using fatty acid methylester (FAME) analysis, observed that the microbial community structure changed seasonally in the subsurface soil, and not in the surface soil. They attributed their results to the higher organic C and microbial biomass in the surface soil, which may enhance the microbial ability to withstand environmental perturbations.…”

Section: Discussionmentioning

confidence: 99%

Biomass and catabolic diversity of microbial communities with long-term restoration, bare fallow and cropping history in Chinese Mollisols

Wang¹,

Jin²,

Chen³

et al. 2007

PLANT SOIL ENVIRON

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Microbial biomass and community catabolic diversities at three depths (0-10 cm, 20-30 cm, and 40-50 cm) in Chinese Mollisols as influenced by long-term managements of natural restoration, cropping and bare fallow were investigated. Microbial biomass was estimated from chloroform fumigation-extraction and substrate-induced respiration (SIR), and catabolic diversity was determined by using Biolog® EcoPlate. Experimental results showed that microbial biomass significantly declined with soil depth in the treatments of restoration and cropping, and not in the treatment of bare fallow, where the microbial biomass had a positive relationship with the total soil C content. The inspections into the catabolic capability of the microbial community at the same soil depth showed that the treatment of natural restoration had a relatively stronger metabolic ability than the cropping and bare fallow treatments. Shannon's diversity index, substrate richness and substrate evenness calculated from the Biolog data were higher in the treatments of natural restoration and cropping than the bare fallow treatment with the same soil depth, and with the highest values in the top soil. Principal component analysis indicated that the catabolic profiles not only varied with the soil depth in each treatment, but also differed in the three treatments within the same soil depth. The catabolic profiles of the three treatments were similar to each other in the soil depth of 0-10 cm and distinctly different in the soil depths of 20-30 cm and 40-50 cm. These results suggest that it was microbial biomass rather than community function that was influenced by the different soil management in the topsoil (0-10 cm); in the relative depths, the soil microbial community function was more easily influenced than microbial biomass.

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“…Indeed, the view of Harrysson Drotz et al (2010) that microbial synthesis and growth may continue when soil is frozen is not exclusive of a decrease of microbial activity at low temperatures. Thus, Blume et al (2002) determined microbial biomass, community structure and metabolic activity in two mid-latitude soils (Indiana, United States) collected in both February and July. They showed that, while the size of the microbial biomass was not significantly affected by the seasonal variation, season did affect microbial community structure and activity, with a significant increase in microbial activity in summer compared to winter (up to 83% increase in soil surface; Blume et al, 2002).…”

Section: Air Temperaturementioning

confidence: 99%

“…Thus, Blume et al (2002) determined microbial biomass, community structure and metabolic activity in two mid-latitude soils (Indiana, United States) collected in both February and July. They showed that, while the size of the microbial biomass was not significantly affected by the seasonal variation, season did affect microbial community structure and activity, with a significant increase in microbial activity in summer compared to winter (up to 83% increase in soil surface; Blume et al, 2002). Therefore, even though all microorganisms or groups of microorganisms may not be similarly affected by changes in temperature, increased activity of branched GDGT-producing bacteria may clearly occur under warmer conditions during summer.…”

Section: Air Temperaturementioning

confidence: 99%

Effects of a short-term experimental microclimate warming on the abundance and distribution of branched GDGTs in a French peatland

Huguet¹,

Fosse

Laggoun‐Défarge

et al. 2013

Geochimica et Cosmochimica Acta

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To cite this version:Arnaud Huguet, Céline Fosse, Fatima Laggoun-Défarge, Frédéric Delarue, Sylvie Derenne. Effects of a short-term experimental microclimate warming on the abundance and distribution of branched GDGTs in a French peatland. Geochimica et Cosmochimica Acta, Elsevier, 2013Elsevier, , 105, pp.294-315. 10.1016Elsevier, /j.gca.2012 Effects of a short-term experimental microclimate warming on the abundance and distribution of branched GDGTs in a French peatland AbstractBranched glycerol dialkyl glycerol tetraethers (GDGTs) are complex lipids of high molecular weight, recently discovered in soils and increasingly used as palaeoclimate proxies. Their degree of methylation, expressed in the MBT, was shown to depend on mean annual air temperature (MAAT) and to a lesser extent on soil pH, whereas the relative abundance of cyclopentyl rings of branched GDGTs, expressed in the CBT, was related to soil pH. To date, only a few studies were interested in the application of the MBT and CBT proxies in peatlands. In order to validate the applicability of branched GDGTs as temperature proxies in these environments, it is essential to investigate the effect of temperature on branched GDGT-producing bacteria and especially on the speed of adaptation of these microorganisms to temperature changes. The aim of this work was to study the effects of in situ experimental climate warming on the abundance and distribution of branched GDGTs in a Sphagnum-dominated peatland (Jura Mountains, France). Branched GDGTs either present as core lipids (CLs; presumed of fossil origin) or derived from intact polar lipids (IPLs, markers for living cells) were analysed. Air temperature was experimentally increased using a passive warming system consisting of open mini-greenhouses (open-top chamber -OTC). The effect of the OTCs was especially apparent in spring and summer, with (i) an increase in maximal air temperature of ca. 3°C during these two seasons and (ii) an increase in average air temperature of ca. 1°C in summer. Despite the short duration of the climate experiment (26 months), branched GDGT distribution was significantly affected by this temperature rise, with higher MBT values in the OTCs than in the control plots, supporting the empirical relationship between MBT and MAAT established from a large range of soils. The difference in branched GDGT-derived temperatures between control and OTC plots (2-3°C) was in the same range as the increase in maximal (daytime) temperature induced by the OTCs in spring and summer, suggesting that branched GDGT-producing bacteria might be more active during the warmest months of the year. The OTC treatment had no significant effect on the abundance of branched GDGTs, which were mainly present as "fossil" CLs (70-85% of the total branched GDGT pool). Furthermore, no significant differences in branched GDGT distribution were observed between the CLs and IPLs, which both provided higher MBT and MAAT values for the OTCs. This suggests that the fossil pool of branched GDGTs has a very fast turnove...

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Surface and subsurface microbial biomass, community structure and metabolic activity as a function of soil depth and season

Cited by 320 publications

References 41 publications

Humusica 2, article 16: Techno humus systems and recycling of waste

Humusica 2, article 16: Techno humus systems and recycling of waste

Biomass and catabolic diversity of microbial communities with long-term restoration, bare fallow and cropping history in Chinese Mollisols

Effects of a short-term experimental microclimate warming on the abundance and distribution of branched GDGTs in a French peatland

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