Carbon and nitrogen dynamics along the log bark decomposition continuum in a mesic old-growth boreal forest

Romashkin, Ivan; Shorohova, Ekaterina; Kapitsa, Ekaterina; Галибина, Н. А.; Nikerova, Kseniya M.

doi:10.1007/s10342-018-1131-2

Cited by 15 publications

(6 citation statements)

References 71 publications

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“…In the BWW, the C:N ratio varies over a wide range from 34 to 306 (with a zonal norm of 11). The obtained results are consistent with the data on the ratio of carbon and nitrogen in the bark of coniferous trees, reflected in the literature [67,72]. Thus, we see that the lack of biologically available nitrogen also inhibits the BWW composting process.…”

Section: Evaluation Of Agricultural Potential Of Bwwsupporting

confidence: 92%

“…The most comprehensive studies of changes in the elemental composition and pH of bark were carried out by a group of scientists on the example of bark decomposition in natural conditions of a boreal forest. The authors also found that the carbon concentration in the spruce bark remained virtually unchanged (spruce BWW dominates in the dump under study) [67]. The authors also noted that the pH of bark and wood waste remained practically unchanged for more than 66 years [67].…”

Section: Evaluation Of Agricultural Potential Of Bwwmentioning

confidence: 83%

“…The authors also found that the carbon concentration in the spruce bark remained virtually unchanged (spruce BWW dominates in the dump under study) [67]. The authors also noted that the pH of bark and wood waste remained practically unchanged for more than 66 years [67].…”

Section: Evaluation Of Agricultural Potential Of Bwwmentioning

confidence: 83%

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Feasibility of Old Bark and Wood Waste Recycling

Kulikova

Сухих

Babich

et al. 2022

Plants

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The pulp and paper industry leads to the formation of significant amounts of bark and wood waste (BWW), which is mostly dumped, causing negative climate and environmental impacts. This article presents an overview of methods for recycling BWW, as well as the results of assessing the resource potential of old bark waste based on physicochemical and thermal analysis. It was found that using BWW as a plant-growing substrate is challenging because it was observed that bark waste is phytotoxic. The C:N waste ratio is far from optimum; moreover, it has a low biodegradation rate (less than 0.15% per year). The calorific value content of BWW ranged from 7.7 to 18.9 MJ/kg on d.m., the ash content was from 4% to 22%, and the initial moisture content was from 60.8% to 74.9%, which allowed us to draw conclusions about the feasibility of using hydrothermal methods for their processing to obtain biofuel and for the unreasonableness of using traditional thermal methods (combustion, pyrolysis, gasification).

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Section: Evaluation Of Agricultural Potential Of Bwwsupporting

confidence: 92%

Section: Evaluation Of Agricultural Potential Of Bwwmentioning

confidence: 83%

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Feasibility of Old Bark and Wood Waste Recycling

Kulikova

Сухих

Babich

et al. 2022

Plants

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“…In our study, aspen logs represent the most specific substrate due to its greatest diameter, surface area and bark mass correlated with the greatest moisture (Shorohova et al, 2016) and pH (Romashkin et al, 2018). High substrate specificity of aspen for lichens has been recognized (Uliczka and Angelstam, 1999;Jüriado, Paal, and Liira, 2003).…”

Section: Ecologymentioning

confidence: 56%

Epixylic diversity in an old-growth boreal forest is influenced by dynamic substrate attributes

Kushnevskaya

Borovichev

Shorohova

2022

BioComm

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Quantifying the factors influencing wood-inhabiting species in boreal forests is crucial for better understanding of their ecology and conservation needs. We estimated the influence of substrate attributes on epixylic diversity on logs of Picea abies, Betula pubescens, B. pendula, Populus tremula and Pinus sylvestris in a mixed European old-growth boreal forest with high substrate availability and continuity. The number of species of different taxonomic and substrate groups in respect of log attributes was estimated with generalized linear models. The composition of epixylic communities was analysed using non-metric multidimensional scaling with subsequent environmental fitting. Additionally, we calculated species interaction networks of log (tree) species and epixylic plants and lichens. Species richness per log decreased with the increasing height above the ground and increased with the increasing amount of accumulated litter. True epixylics were the most sensitive to a log position above the ground. Aspen and conifer logs harbored the highest richness of rare species of lichens and liverworts. Birch logs hosted mainly species with wide substrate amplitude. The whole epixylic community specialization index decreased in the order lichens, liverworts, mosses, vascular plants. Tree species identity and associated attributes (bark cover, pH etc.) as well as ‘dynamic’ attributes (accumulation of litter, wood decomposition and time since tree death) influenced the total species number, their taxonomic diversity, and the composition of epixylic communities. Our results indicate the importance of wood of various age and tree species for the conservation of epixylic diversity in boreal forests.

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“…Another part of N in decaying deadwood may originate from different sources. Besides the input of reactive N via atmospheric deposition as ammonia (NH 3 ) and nitrate (Lladó et al 2017;Romashkin et al 2018), and the translocation of N from underlying soil into deadwood via fungal hyphae (Lindahl and Finlay 2006;Palviainen et al 2010), asymbiotic biological N 2 fixation (BNF) can contribute to N enrichment in deadwood (Boring et al 1988). BNF in deadwood provided up to 14% of the N input (Hicks 2000).…”

Section: Introductionmentioning

confidence: 99%

Biological nitrogen fixation and nifH gene abundance in deadwood of 13 different tree species

et al. 2022

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Deadwood is an extremely nitrogen (N) poor plant litter whose decomposition may rely on external N sources. Biological N2 fixation (BNF) by free-living diazotrophs, encoded with the nifH gene, is a potential pathway of N acquisition in deadwood. Still, the control of this process by tree species specific traits is hardly known. Here, we examined (1) BNF rates and nifH gene abundances in deadwood of 13 tree species after 12 years of decomposition and (2) how BNF was related to nutrient concentrations and non-structural carbohydrates (NSC). Comparing our BNF rates with the literature revealed no difference for angiosperms but gymnosperms. Large variability prevented any significant difference in BNF and nifH gene abundance between tree species identities of deadwood. Still, higher BNF and nifH gene abundances occurred in the group of diffuse-porous angiosperms compared to ring-porous angiosperms and gymnosperms. Positive relationships between BNF rates and molybdenum, phosphor, sulfur, and N suggested co-limitation of BNF by several nutrients in deadwood. Relatively high NSC concentrations indicated good carbon availability for diazotrophs. Furthermore, structural equation modeling highlighted the importance of water content for BNF and nifH gene abundance, although the overall explanatory power was low. In conclusion, BNF is a ubiquitous microbial process in deadwood of native European tree species and the comparison with other studies suggests no down-regulation of BNF by high N deposition in Central Europe.

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Carbon and nitrogen dynamics along the log bark decomposition continuum in a mesic old-growth boreal forest

Cited by 15 publications

References 71 publications

Feasibility of Old Bark and Wood Waste Recycling

Feasibility of Old Bark and Wood Waste Recycling

Epixylic diversity in an old-growth boreal forest is influenced by dynamic substrate attributes

Biological nitrogen fixation and nifH gene abundance in deadwood of 13 different tree species

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