Decomposition rate and nutrient release from plant litter of Norway spruce forest in the Bohemian Forest

Šantrůčková, Hana; Krištůfková, Markéta; Vaněk, Daniel

doi:10.2478/s11756-007-0073-9

Cited by 21 publications

(11 citation statements)

References 24 publications

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“…and K ? ) and DIN from these ecosystems (Dauer et al 2007;Tomlinson 2003;Pawłowski 1997;Kopáček et al 2002aKopáček et al , b, 2006aŠ antrůčková et al 2006). Soil acidity and Al mobility have been related to the physiological stress suffered by spruce trees since the 1960 s (Š antrůčková et al 2007), there is currently a high degree of tree disturbance and defoliation.…”

Section: Introductionmentioning

confidence: 96%

Effect of available P and phenolics on mineral N release in acidified spruce forest: connection with lignin-degrading enzymes and bacterial and fungal communities

et al. 2009

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We conducted over four months a shortterm laboratory incubation experiment to find the best prediction parameters (i.e. initial chemical characteristics) to explain differences in microbial respiration rates and mineral N (DIN) release in different litter in an acidified spruce forest. In addition, we wanted to find the link between the activity of key extracellular ligninolytic enzymes, phenoloxidases (PhOx) and peroxidases (Perox), microbial respiration and composition of fungal and bacterial communities. Samples of spruce needles (Picea abies) and litter of four dominant understorey vegetation; lady fern (Athyrium alpestre), blueberry (Vaccinium myrtillus), reedgrass (Calamagrostis villosa) and hair grass (Avenella flexuosa), were collected in 2005, 2006 and 2007 from six sites located in watersheds of two glacial lakes (Plesne Lake and Certovo Lake) in the Bohemian Forest, Czech Republic. Litter samples were incubated at 0 and 10°C in laboratory controlled conditions for 90 days. Activities of PhOx and PerOx, and C mineralization rate were measured regularly each 14 days. Litter quality characteristics and endophytic microbial community structure, based on 16SrDNA-DGGE fingerprint of bacteria and ITS-DGGE of fungi, were determined at the beginning and end of litter incubation. Our results showed a close correlation of phenolics/P OX with DIN release (r [ 0.74, p \ 0.001). Using multivariate analyses, P OX seems to play an important role in the change of litter fungal and bacterial community composition. At 0°C the fungal and bacterial communities of reedgrass and blueberry litter changed in relation to P OX and Perox activity, while at 10°C the fungal communities after the incubation were additionally affected by the phenolics/N TOT and phenolics/P TOT ratios.

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Section: Introductionmentioning

confidence: 96%

Effect of available P and phenolics on mineral N release in acidified spruce forest: connection with lignin-degrading enzymes and bacterial and fungal communities

et al. 2009

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“…and K ? ) (Dauer et al 2007;Tomlinson 2003;Pawłowski 1997) and NO 3 -from the forest soils (Kopácek et al 2002a, b;Š antrůčková et al 2006). One of the reasons for higher NO 3 -leaching could be the reduction in the amount of denitrifying bacteria in the acid forest soils.…”

Section: Introductionmentioning

confidence: 97%

Effect of pH and dissolved organic matter on the abundance of nirK and nirS denitrifiers in spruce forest soil

et al. 2010

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Acid N depositions in the Bohemian Forest during the second half of the last century caused enormous soil acidification which led to the leaching of essential nutrients including nitrates. We investigated the effect of dissolved organic matter (DOM) and pH on the abundance of 16S RDNA, nirK and nirS gene copies in four spruce forest sites. Soil samples for molecular based quantification (qPCR) were taken from the organic litter and humus layers. The amounts of dissolved organic carbon (DOC) and dissolved nitrogen (DN) were much lower in highly acidified soils. We found a strong correlation between nirK denitrifiers and the amount of available P (r = 0.83, p \ 0.001), which suggested a higher nutrient sensitivity of this group of denitrifying bacteria. Additionally, we found that correlations between the amount of nirK denitrifiers and DOC and pH are exponentional showing two important threshold values, being 4.8 mol kg -1 and 5, respectively. The amount of nirK denitrifiers rapidly decreased below these values. The amount of nirK and nirS denitrifiers was higher in the organic litter horizon than the organic humus horizon at all sampling sites.

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“…Forest litter decomposition alters surrounding soil by influencing mechanisms that include terrestrial carbon (C) and nitrogen (N) cycling (Šantrůčková, Krištůfková & Vaněk, 2006;Hicks Pries et al, 2017). Several studies have looked further into these contributions to soil biogeochemistry; however, the observed impacts of decomposition on soil biogeochemistry differ between studies as a function of forest structure and tree mortality levels that fluctuate with time (Negrón & Cain, 2018;Fraterrigo, Ream & Knoepp, 2018).…”

Section: Introductionmentioning

confidence: 99%

A comparison of lodgepole and spruce needle chemistry impacts on terrestrial biogeochemical processes during isolated decomposition

Laura

Mikkelson

Hao

et al. 2020

PeerJ

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This study investigates the isolated decomposition of spruce and lodgepole conifer needles to enhance our understanding of how needle litter impacts near-surface terrestrial biogeochemical processes. Harvested needles were exported to a subalpine meadow to enable a discrete analysis of the decomposition processes over 2 years. Initial chemistry revealed the lodgepole needles to be less recalcitrant with a lower carbon to nitrogen (C:N) ratio. Total C and N fundamentally shifted within needle species over time with decreased C:N ratios for spruce and increased ratios for lodgepole. Differences in chemistry correlated with CO2 production and soil microbial communities. The most pronounced trends were associated with lodgepole needles in comparison to the spruce and needle-free controls. Increased organic carbon and nitrogen concentrations associated with needle presence in soil extractions further corroborate the results with clear biogeochemical signatures in association with needle chemistry. Interestingly, no clear differentiation was observed as a function of bark beetle impacted spruce needles vs those derived from healthy spruce trees despite initial differences in needle chemistry. These results reveal that the inherent chemistry associated with tree species has a greater impact on soil biogeochemical signatures during isolated needle decomposition. By extension, biogeochemical shifts associated with bark beetle infestation are likely driven more by changes such as the cessation of rhizospheric processes than by needle litter decomposition.

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Decomposition rate and nutrient release from plant litter of Norway spruce forest in the Bohemian Forest

Cited by 21 publications

References 24 publications

Effect of available P and phenolics on mineral N release in acidified spruce forest: connection with lignin-degrading enzymes and bacterial and fungal communities

Effect of available P and phenolics on mineral N release in acidified spruce forest: connection with lignin-degrading enzymes and bacterial and fungal communities

Effect of pH and dissolved organic matter on the abundance of nirK and nirS denitrifiers in spruce forest soil

A comparison of lodgepole and spruce needle chemistry impacts on terrestrial biogeochemical processes during isolated decomposition

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