The volume and composition of dead wood on traditional and forest fuel harvested clear-cuts

Eräjää, Sini; Halme, Panu; Kotiaho, Janne S.; Markkanen, Anni; Toivanen, Tero

doi:10.14214/sf.150

Cited by 69 publications

(42 citation statements)

References 18 publications

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“…In this context, if the aim is to collect species lists to obtain a general figure of the species pool and its ecology in a given biotope, opportunistic survey may be a more efficient tool than the usual sample plot-based surveys. To cover large areas, sample plot studies should have high lower limit for the size of the studied dead wood pieces (as in Penttilä et al 2004), thus losing a lot of information about the species living on the smaller pieces (Juutilainen et al 2011) and a large proportion of the total available dead wood volume (Eräjää et al 2010). On the other hand, sample plot studies with small lower size limits of the studied pieces can cover only very small areas (Juutilainen et al 2011).…”

Section: Methodological Self-examinationmentioning

confidence: 99%

Polypore communities in broadleaved boreal forests

Markkanen¹,

Halme²

2012

Silva Fenn.

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The cover and extent of boreal broadleaved forests have been decreasing due to modern forest management practices and fire suppression. As decomposers of woody material, polypores are ecologically important ecosystem engineers. The ecology and conservation biology of polypores have been studied intensively in boreal coniferous forests. However, only a few studies have focused on the species living on broadleaved trees. To increase knowledge on this species group we conducted polypore surveys in 27 broadleaved forests and 303 forest compartments (539 ha) on the southern boreal zone in Finland and measured dead wood and forest characteristics. We detected altogether 98 polypore species, of which 13 are red-listed in Finland. 60% of the recorded species are primarily associated with broadleaved trees. The number of species in a local community present in a broadleaved forest covered approximately 50 species, of which 30-40 were primarily associated with broadleaved trees. The size of the inventoried area explained 67% of the variation in the species richness, but unlike in previous studies conducted in coniferous forests, dead wood variables as well as forest structure had very limited power in explaining polypore species richness on forest stand level. The compartments occupied by red listed Protomerulius caryae had an especially high volume of living birch, but otherwise the occurrences of red-listed species could not be predicted based on the forest structure.

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Section: Methodological Self-examinationmentioning

confidence: 99%

Polypore communities in broadleaved boreal forests

Markkanen¹,

Halme²

2012

Silva Fenn.

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“…The amount of stump-wood on the clear cuts is large, and has been estimated to 23 m 3 above ground/ha (67 m 3 / ha with wood below ground included) on clear cuts in southern Sweden (Hofsten 2006). On more northern (boreal) sites in Finland Eräjää et al (2010) estimated the amount of stump wood above ground to be 12 m 3 /ha. These values are substantially greater than the 2-6 m 3 /ha, which is the usual amount of coarse dead wood (i.e.…”

Section: Introductionmentioning

confidence: 99%

Logs and stumps in clearcuts support similar saproxylic beetle diversity: implications for bioenergy harvest

Jonsell¹,

Hansson²

2011

Silva Fenn.

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Stumps from clear cuts are increasingly used for bioenergy. Extracting this wood will reduce the habitat available for saproxylic (wood-living) organisms. As little is known about the species assemblages that will be affected, we investigated the diversity of saproxylic beetles in stumps on clear-felled sites and as a reference, we compared it with the diversity in downed logs. Stumps and logs of aspen (Populus tremula L.), birch (Betula pubescens Ehrh. and B. verrucosa Ehrh.[syn. B. pendula Roth]), spruce (Picea abies (L.) Karst.) and pine (Pinus sylvestris L.) were examined in clear cuts of two different ages: one summer old and 4-5 years old. The beetles were sampled by sieving bark (0.25 m 2 ) peeled from the wood. The samples were taken in pairs of one log and one stump situated close together and of the same tree species, age since death and diameter. In total 3348 saproxylic beetles belonging to 124 species were found in 176 samples. The stumps had a similar number of species to the logs both as measured per sample and as an accumulated number. Exceptions were 4-5 years old wood of birch and pine where the number was significantly higher in the stumps. The number of red-listed species was also similar between stumps and logs. Species composition was more different between the stumps and logs of conifers than of deciduous trees. We conclude that clear-felled stumps have a diverse saproxylic insect fauna. This has to be taken into account if large scale extraction of logging stumps is implemented.

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“…In classical forest management, trees that are the source of woody debris are cut before their normal life, and dead wood fragments are collected and removed to guard against disease, insect, and fire threats. Various researchers have similarly emphasized that there are quite notably different effects of forest management and silvicultural practices on woody debris quantities [51][52][53].…”

Section: Discussionmentioning

confidence: 99%

Carbon Stocks of Fine Woody Debris in Coppice Oak Forests at Different Development Stages

Makineci¹,

Akburak²,

Özturna³

et al. 2017

Forests

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Dead woody debris is a significant component of the carbon cycle in forest ecosystems. This study was conducted in coppice-originated oak forests to determine carbon stocks of dead woody debris in addition to carbon stocks of different ecosystem compartments from the same area and forests which were formerly elucidated. Weight and carbon stocks of woody debris were determined with recent samplings and compared among development stages (diameter at breast height (DBH, D 1.3m )), namely small-diameter forests (SDF) = 0-8 cm, medium diameter forests (MDF) = 8-20 cm, and large-diameter forests (LDF) = 20-36 cm). Total woody debris was collected in samplings; as bilateral diameters of all woody debris parts were less than 10 cm, all woody parts were in the "fine woody debris (FWD)" class. The carbon concentrations of FWD were about 48% for all stages. Mass (0.78-4.92 Mg·ha −1 ) and carbon stocks (0.38-2.39 Mg·ha −1 ) of FWD were significantly (p > 0.05) different among development stages. FWD carbon stocks were observed to have significant correlation with D 1.3m , age, basal area, and carbon stocks of aboveground biomass (Spearman rank correlation coefficients; 0. 757, 0.735, 0.709, and 0.694, respectively). The most important effects on carbon budgets of fine woody debris were determined to be coppice management and intensive utilization. Also, national forestry management, treatments of traditional former coppice, and conversion to high forest were emphasized as having substantial effects.

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The volume and composition of dead wood on traditional and forest fuel harvested clear-cuts

Cited by 69 publications

References 18 publications

Polypore communities in broadleaved boreal forests

Polypore communities in broadleaved boreal forests

Logs and stumps in clearcuts support similar saproxylic beetle diversity: implications for bioenergy harvest

Carbon Stocks of Fine Woody Debris in Coppice Oak Forests at Different Development Stages

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