Wood-decay type and fungal guild dominance across a North American log transplant experiment

Maillard, François; Jusino, Michelle A.; Andrews, Erin; Moran, Molly; Vaziri, Grace J.; Banik, Mark T.; Fanin, Nicolas; Mayfield, Albert E.; Lindner, Daniel L.; Schilling, Jonathan S.

doi:10.1016/j.funeco.2022.101151

Cited by 9 publications

(2 citation statements)

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“…In [4], the authors incubated 196 logs of aspen (Populus tremuloides), birch (Betula papyrifera), and pine (Pinus taeda) of large diameters in the FACE Wood Decomposition Experiment, covering eight climatically different forest sites in the United States. Deadwood was sampled from these large-diameter logs, after 2-6 years of decay, and the type of decayed wood was determined as a continuous variable using the ratio of lignin loss/density loss (L/D).…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Establishment of patterns in the thermal modification of dry pine wood

Tsapko,

Horbachova,

Likhnyovskyi

et al. 2023

EEJET

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One of the methods of ensuring the durability of dry wood during operation is its thermal modification, which inhibits the life processes of the fungus of the Ceratostomaceae family and leads to a change in its structure and properties. Therefore, the object of research was thermally modified dry pine wood affected by a fungus of the Ceratostomaceae family. Physicochemical studies of changes in the structure of thermally modified dry pine wood showed that the samples have absorption spectra that are characterized by fluctuations of the glucopyranose ring of cellulose and are an indicator of the beginning of destructive processes. At the same time, the data of thermogravimetric analysis show the processes of water loss and decomposition of hemicellulose, cellulose, and lignin, and burning of coke residue. Bending and compressive strength of thermally modified dry pine wood shows that as the wood dries, the strength limit decreases depending on the degree of fungus damage. Namely, with an area of biological damage within 10 %, the strength limit is reduced by more than 1.2 times when modified at 200 °С/3 hours, by more than 1.9 times at 200 °С/6 hours. With an increase in the degree of fungal damage to 30÷50 %, the strength limit decreases by more than 1.6 times when modified at 200 °С/3 hours, by more than 2.1 at 200 °С/6 hours. And when affected by a fungus in the range of 80÷100 %, the wood becomes softer, more plastic, while the bending strength is reduced by 1.7 times, and the compressive strength by 1.16 times. Thermal modification of dry pine wood at 200 °С for 3 hours reduces the level of water absorption by more than 1.5 times, and for 6 hours ‒ by more than 1.7 times. The practical importance is that the results of determining changes in the structure and properties of thermally modified dry pine wood make it possible to establish the scope and conditions of its application

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Establishment of patterns in the thermal modification of dry pine wood

Tsapko,

Horbachova,

Likhnyovskyi

et al. 2023

EEJET

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“…In P. densiflora dead wood, Fukasawa found a simultaneous decay of lignin and holocellulose at the early stages of wood decomposition and a selective decomposition of holocellulose at the late stages, resulting in an increase of lignin content at the late stages [ 21 ]. Despite the widespread assumption that the dead wood of conifer trees is dominated by brown rot fungi that decay wood holocellulose preferentially with little modification of lignin, white rot of coniferous dead wood is quite common [ 22 , 23 , 24 , 25 , 26 ]. Bringing this system into laboratory incubation experiments, Fukasawa and Matsukura observed a negative fungal species diversity–decomposition relationship in experiments using wood and fungi in the late stages of wood decomposition, but not in experiments using those in the early stages [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Surface Area of Wood Influences the Effects of Fungal Interspecific Interaction on Wood Decomposition—A Case Study Based on Pinus densiflora and Selected White Rot Fungi

Fukasawa

Kaga

2022

JoF

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Wood decomposer basidiomycetes are the major agents of lignocellulose decomposition in dead wood. As their interspecific interaction affects wood decomposition, difference in interaction area may alter the magnitude of the effects. This study examines the effects of wood surface area on decomposition by interacting basidiomycetes using laboratory incubation experiments with pine sapwood as a model. Two types of pine wood blocks with equal volume but identical surface area were prepared for colonization by one of four white rot basidiomycete species. The colonized wood blocks were then placed on agar media already colonized by the same strain or one of the other species, simulating fungal monoculture and interspecific interactions on wood surface. Results demonstrated that the decay rate of wood was greater in wood with larger surface, and wood decay was accelerated by the interaction of two fungal species in wood with larger surface but not in wood with smaller surface. In contrast, lignin decomposition was influenced by the competitor in wood with smaller surface but not in wood with larger surface. These results suggest that the observed promotion of decay by fungal interspecific interaction might not be attributable to the resource partitioning between fungal species but to the accelerated carbon of competition cost compensation in this case.

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