Dynamics of coarse woody debris following gap harvesting in the Acadian forest of central Maine, U.S.A.

Fraver, Shawn; Wagner, Robert G.; Day, Michael E.

doi:10.1139/x02-131

Cited by 132 publications

(120 citation statements)

References 58 publications

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“…In addition, dead wood was classified into a total of four decomposition-level categories (BMELV 2010;BMVEL 2001). The biomass of the dead wood stocks for the various relevant decomposition classes, was determined with the wood density figures pursuant to Fraver et al (2002) for conifers, and with the wood density figures pursuant to Müller-Using & Bartsch (2009) for both deciduous tree species (other than oak) and oak tree species. An overview of the biomass-expansion factors is presented in Table 1.…”

Section: Sampling Methodsmentioning

confidence: 99%

Carbon stocks in tree biomass and soils of German forests

Wellbrock¹,

Grüneberg²,

Riedel³

et al. 2017

Central European Forestry Journal

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Close to one third of Germany is forested. Forests are able to store significant quantities of carbon (C) in the biomass and in the soil. Coordinated by the Thünen Institute, the German National Forest Inventory (NFI) and the National Forest Soil Inventory (NFSI) have generated data to estimate the carbon storage capacity of forests. The second NFI started in 2002 and had been repeated in 2012. The reporting time for the NFSI was 1990 to 2006. Living forest biomass, deadwood, litter and soils up to a depth of 90 cm have stored 2500 t of carbon within the reporting time. Over all 224 t C ha -1 in aboveground and belowground biomass, deadwood and soil are stored in forests. Specifically, 46% stored in above-ground and below-ground biomass, 1% in dead wood and 53% in the organic layer together with soil up to 90 cm. Carbon stocks in mineral soils up to 30 cm mineral soil increase about 0.4 t C ha -1 yr -1 stocks between the inventories while the carbon pool in the organic layers declined slightly. In the living biomass carbon stocks increased about 1.0 t C ha -1 yr -1. In Germany, approximately 58 mill. tonnes of CO 2 were sequestered in 2012 (NIR 2017).

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Section: Sampling Methodsmentioning

confidence: 99%

Carbon stocks in tree biomass and soils of German forests

Wellbrock¹,

Grüneberg²,

Riedel³

et al. 2017

Central European Forestry Journal

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“…For example, several threatened species of wood-decay fungi depend on both a stand-and landscape-level supply of deadwood (Gu et al 2002, Edman et al 2004a, 2004b, Jöns-son et al 2008. To date, however, most studies of CWD dynamics have addressed only stand-level patterns (e.g., Jonsson 2000, Fraver et al 2002, Edman et al 2007, Aakala et al 2009); much less attention has been directed toward CWD dynamics at larger scales.…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal variation of coarse woody debris input in woodland key habitats in central Sweden

Jönsson¹,

Fraver²,

Jonsson³

2011

Silva Fenn.

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The persistence of many saproxylic (wood-living) species depends on a readily available supply of coarse woody debris (CWD). Most studies of CWD inputs address stand-level patterns, despite the fact that many saproxylic species depend on landscape-level supplies of CWD. In the present study we used dated CWD inputs (tree mortality events) at each of 14 Norway spruce (Picea abies) dominated woodland key habitat sites to analyze the spatial and temporal patterns of CWD additions between 1950 and 2002 within a small landscape in central Sweden. We found that inputs were episodic within sites, where local windstorms created pulses in CWD input. Pulses occurred simultaneously in many sites, yielding landscape-level synchrony of CWD input. These synchronous pulses, and importantly, the breaks between pulses, may have negative implications for saproxylic species that are dependent on large volume inputs of freshly killed Norway spruce. In addition, the inherent small size and relative isolation of these sites may further increase extinction risks due to stochastic events. However, background CWD input rates occurring between pulses varied substantially among sites, presumably the result of the sites' varied histories and structural characteristics. This finding suggests that the different sites have varied abilities to provide habitat for saproxylic species during periods with low landscape-level input of CWD.

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“…Decay classification was based on Fraver et al [66] and included decay class 1 (wood was sound, bark was intact, small to medium branches were still present); decay class 2 (wood was sound to slightly rotten, bark maybe attached, large branch stubs were present, log maintained round shape); decay class 3 (wood was substantially rotten, wood texture was moist, bark was barely attached, bole was oval shaped and partially buried in duff); decay class 4 (wood was rotten, branch stubs rotted, bark was detached, log was oval shaped and largely buried by duff).…”

Section: Field Methodsmentioning

confidence: 99%

Spatial Patterns of Irradiance and Advanced Reproduction along a Canopy Disturbance Severity Gradient in an Upland Hardwood Stand

Keasberry

Hart

Dey

et al. 2016

Forests

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Regeneration failure of Quercus in mature Quercus-dominated forests has been reported throughout the temperate zone. Quercus seedlings are often abundant in these forests, yet frequently fail to recruit to larger size classes despite canopy disturbances. To examine intra-stand patterns of advanced reproduction, competition, and irradiance in an upland Quercus stand, we installed a 2 ha plot that captured the canopy disturbance severity gradient caused by a wind event. To quantify disturbance severity and stand conditions, we inventoried all living and dead woody stems ě5 cm diameter at breast height (dbh, 1.37 m above the surface) and quantified irradiance in 25 m 2 quadrats (n = 800) using synchronized ceptometers. To inventory patterns of advanced reproduction within the plot, we recorded the species of every woody stem >1 m in height and <5 cm dbh. We also documented the species and height of every Quercus stem ě0.5-<5 cm dbh and the species, height, and distance to each stem nearest the focal Quercus stem. At the genus-level, Quercus was the most common nearest neighbor. However, at the species-level, the most common nearest neighbors were Acer saccharum and Ostrya virginiana. Competition index values significantly differed by species (p < 0.01), but did not significantly differ by disturbance severity class and we found no significant interactions between species and disturbance class. Quercus advanced reproduction was significantly clustered through the study plot and cluster locations overlapped with clusters of high irradiance, but these patterns were scale-dependent. Our results indicate that an appreciation for intra-stand heterogeneity may improve forest management planning.

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Dynamics of coarse woody debris following gap harvesting in the Acadian forest of central Maine, U.S.A.

Cited by 132 publications

References 58 publications

Carbon stocks in tree biomass and soils of German forests

Carbon stocks in tree biomass and soils of German forests

Spatio-temporal variation of coarse woody debris input in woodland key habitats in central Sweden

Spatial Patterns of Irradiance and Advanced Reproduction along a Canopy Disturbance Severity Gradient in an Upland Hardwood Stand

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