Mineralization and fragmentation rates of bark attached to logs in a northern boreal forest

Shorohova, Ekaterina; Kapitsa, Ekaterina

doi:10.1016/j.foreco.2013.12.016

Cited by 31 publications

(21 citation statements)

References 26 publications

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“…The decomposition rate of bark attached to logs determined in this study is within the range reported for the decomposition rates of stumps (Shorohova et al 2012) and log bark (Shorohova and Kapitsa 2014a) in European boreal forests. The much higher decomposition rates of bark compared to wood may be one of the reasons that our estimates of decomposition rates for whole CWD pieces were in the upper limit of the regional ranges for CWD decomposition rates.…”

Section: Barksupporting

confidence: 89%

“…This result can lead to an assumption of higher activity of bark-boring insects under more favorable site conditions compared to poor conditions. In wet forests in Komi sites, bark cover of coniferous trees slowly decreases during decomposition (Shorohova and Kapitsa 2014a). In this study, when Komi sites are combined with more well-drained CF and partly VF1 sites, many trees have already been affected by bark beetles before death.…”

Section: Barkmentioning

confidence: 64%

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The decomposition rate of non-stem components of coarse woody debris (CWD) in European boreal forests mainly depends on site moisture and tree species

Shorohova

Kapitsa

2016

Eur J Forest Res

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The decomposition rate of CWD is a key missing link for a quantitative understanding of forest ecosystem functioning. We examined factors influencing decomposition rates of bark, roots and branches from aspen (Populus tremula), birch (Betula pendula, B. pubescens), fir (Abies sibirica), spruce (Picea abies, P. obovata), Scots pine (Pinus sylvestris) and Siberian pine (Pinus sibirica) CWD in three primeval European boreal forests. The chronosequence approach with estimates of single exponential decomposition rate (k) based on calculation of mass loss was used. The k of non-stem parts increased in the order: branches (0.006 year -1 for P. sibirica and 0.020 year -1 for other species), roots in poorly drained sites (0.025 year -1 ), roots in well-drained sites (0.034 year -1 ) and bark (0.110 and 0.138 year -1 and 0.147 and 0.255 year -1 under poorly and well-drained conditions and from 1 to 3 m and [3 m above the root collar, respectively). Our results predict that the rate of decomposition of whole CWD pieces in European boreal forests is a function of vegetation zone, site conditions, tree species and size.

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Section: Barksupporting

confidence: 89%

Section: Barkmentioning

confidence: 64%

The decomposition rate of non-stem components of coarse woody debris (CWD) in European boreal forests mainly depends on site moisture and tree species

Shorohova

Kapitsa

2016

Eur J Forest Res

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“…In this red pine forest, the CWD k value of 0.0968 at the stand level was within the range of 0.0040-0.1570 from subtropical to boreal pine forests [25,26,[47][48][49][50][51]. This relatively high value appears to be reasonable for our temperate pine forest, which had relatively higher mean annual temperature and mean annual precipitation under the Asian monsoon climate.…”

Section: Decomposition Of Fine Litterfall and Cwdmentioning

confidence: 49%

Carbon and Nitrogen Accumulation and Decomposition from Coarse Woody Debris in a Naturally Regenerated Korean Red Pine (Pinus densiflora S. et Z.) Forest

Noh

Yoon

Kim

et al. 2017

Forests

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Abstract:The contribution of coarse woody debris (CWD) to forest carbon (C) and nitrogen (N) dynamics is poorly quantified. This study quantified total C and N content in CWD and estimated the decomposition rates of CWD at different decay stages in a 70-year-old naturally regenerated Korean red pine forest (Pinus densiflora S. et Z.). The N concentration in CWD varied among species and decay classes (from 0.15% to 0.82%), and exhibited a decreasing pattern in C:N ratios with increasing decay class. Total CWD amounts of 4.84 Mg C ha −1 , dominated by pine logs (45.4%) and decay class III (40.0%), contained total N of 20.48 kg N ha −1 , which was approximately nine times the N input from annual tree mortality. In addition, this study demonstrated that the decay constant rate k was 0.2497 for needle litter, whereas k values were 0.0438, 0.0693, 0.1054, and 0.1947 for red pine CWD of decay class I, II, III, and IV, respectively. The decay rates were significantly related to wood density, N concentration, and C:N ratio across the decay classes of CWD. The results suggest that the C:N ratio of CWD is a key factor affecting its decomposition.

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“…In decomposition studies, wood and bark are often treated as one substrate (Dossa et al, 2018; Harmon et al, 1986; Weedon et al, 2009), though there are a growing number of studies that consider bark and wood decomposition separately (Dossa, Paudel, Cao, Schaefer, & Harrison, 2016; Dossa et al, 2018; Shorohova & Kapitsa, 2014; Ulyshen, Müller, & Seibold, 2016). Because bark and wood differ in the characteristics that influence decomposition, separating bark and wood decomposition is an easy and potentially revealing way to reduce unexplained variation in wood decomposition and to understand the effect of substrate composition on microbial communities.…”

Section: Introductionmentioning

confidence: 99%

Habitat‐specific effects of bark on wood decomposition: Influences of fragmentation, nitrogen concentration and microbial community composition

et al. 2020

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1. Identifying the drivers of decomposition is critical for understanding carbon cycling dynamics in forest ecosystems. Woody biomass is an important pool of carbon, composed of bark and underlying wood which vary in structure, nutrient concentrations and exposure to the environment. We hypothesized that higher nutrient concentrations in bark would speed the decomposition of underlying wood, and that this effect would be greater in streams, where nutrients are less available to decomposers than on land.2. Replicate branches of three tree species, with and without bark, were placed in streams and on land in a lowland tropical forest in Panama. After 3 and 11 months of decomposition, we measured mass loss and nitrogen (N) concentrations and sequenced the fungal and bacterial communities of both wood and bark tissues.3. While bark decomposed faster than the underlying wood and had higher N concentrations, bark presence slowed wood mass loss. Nitrogen concentration could account for interspecific variation in wood mass loss, but not bark mass loss. In contrast, bark mass loss, but not wood mass loss, was faster in streams than on land, suggesting fragmentation is more important for bark mass loss in streams.Differences in fungal and bacterial community composition between bark and wood substrates were significant but small. 4.Our results indicate that bark can slow wood decomposition instead of promoting it, and that at least for branch wood, the primary drivers of decomposition differ between bark and wood. Differences in the factors driving decomposition rate between bark and wood suggest that the contribution of bark to the decomposition of woody biomass may depend on habitat. K E Y W O R D Saquatic, bacterial communities, decay, freshwater streams, fungal communities, tropical forest | INTRODUC TI ONA key goal of ecosystem ecology was to understand how carbon and nutrients cycle through ecosystems, and in turn influence ecosystem stability, productivity and diversity. Wood decomposition, which includes biotic decay processes, leaching and fragmentation

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Mineralization and fragmentation rates of bark attached to logs in a northern boreal forest

Cited by 31 publications

References 26 publications

The decomposition rate of non-stem components of coarse woody debris (CWD) in European boreal forests mainly depends on site moisture and tree species

The decomposition rate of non-stem components of coarse woody debris (CWD) in European boreal forests mainly depends on site moisture and tree species

Carbon and Nitrogen Accumulation and Decomposition from Coarse Woody Debris in a Naturally Regenerated Korean Red Pine (Pinus densiflora S. et Z.) Forest

Habitat‐specific effects of bark on wood decomposition: Influences of fragmentation, nitrogen concentration and microbial community composition

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