Variation of Brown Rot Decay in Eastern White Cedar (Thuja occidentalis L.)

Bouslimi, Besma; Koubaa, Ahmed; Bergeron, Yves

doi:10.15376/biores.8.3.4735-4755

Cited by 14 publications

(8 citation statements)

References 32 publications

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“…In boreal regions, for example, angiosperm logs have greater density, and retain their shape and volume longer than conifer (Pinaceae) logs, even though tissue porosity becomes comparable in later decay stages (Harmon, Krankina & Sexton 2000). The type, within-log distribution, and overall prevalence of decay can also vary by species, and based on the relative dominance of heartwood vs. sapwood (Bouslimi, Koubaa & Bergeron 2013). However, increased decay and porosity may not always result in greater moisture capacity.…”

Section: Introductionmentioning

confidence: 99%

Log moisture capacity does not predict epixylic bryophyte growth under thinned and unthinned forest canopies

Haughian

Frego

2017

Functional Ecology

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Summary Coarse woody debris (CWD) serves as habitat for diverse and rare taxa in forest systems. Because the abundance of mosses appears to be correlated with log size and stage of decay, many have suggested that CWD serves as a moisture reservoir, ensuring a humid microclimate and facilitating moss growth, but no one has tested this connection. Intact forest canopies are also thought to maintain humid conditions that benefit moss growth. If microclimatic regulation is the primary mechanism contributing to high moss abundance on CWD, then epixylic moss growth should increase with the capacity of the log moisture reservoir, and the importance of the reservoir size should increase with canopy opening. Three types of synthetic logs, identical in size and shape but differing in moisture capacity, and two natural substrates, well‐decayed birch and cedar logs, were used to test the effects of log moisture capacity on growth of Dicranum flagellare under thinned and intact canopies of a spruce plantation over 20 months. Surface humidity was positively associated with moisture capacity, but did not reach the water compensation point outside of precipitation events. Under a closed forest canopy, moss growth was negligible across all log types. Under an open forest canopy, moss growth was greater on natural substrates than synthetic ones, and negatively related to moisture capacity. Coarse woody debris facilitates a sufficiently humid surface for only a short time after precipitation, presumably when a film of liquid water is maintained near the surface. For D. flagellare, canopy condition is a more accurate predictor of growth than CWD‐moisture capacity; any beneficial properties of CWD appear to be lessened by a dense forest canopy (as in silvicultural plantations), probably because it reduces access to liquid water from precipitation. We propose that the surface moisture availability of CWD depends on optimal depth of a ‘resisting layer’ below the log surface, representing a tradeoff between water retention and loss (via percolation or runoff at extremely deep vs. shallow resisting layer depth). Coarse woody debris may possess microclimate‐regulating traits that benefit moss growth, but it does not appear to act as a moisture capacitor. A http://onlinelibrary.wiley.com/doi/10.1111/1365-2435.12864/suppinfo is available for this article.

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Section: Introductionmentioning

confidence: 99%

Log moisture capacity does not predict epixylic bryophyte growth under thinned and unthinned forest canopies

Haughian

Frego

2017

Functional Ecology

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“…Djarwanto et al (2018); Suprapti dan Djarwanto (2012) menyebutkan bahwa ratarata kehilangan berat kayu teras lebih rendah dibandingkan dengan kehilangan berat kayu gubal. Bouslimi et al (2013), dan Freas (1982, juga menyatakan bahwa kayu teras lebih tahan dibandingkan dengan kayu gubal. Kayu gubal dari semua jenis kayu lebih cepat rusak jika dipakai dalam kondisi lingkungan lembab dan basah.…”

Section: A Pelapukan Kayu Yang Berasal Dari Teras Dan Gubalunclassified

Ketahanan Lima Jenis Kayu Terhadap Serangan Delapan Jenis Jamur Pelapuk

Suprapti¹,

Djarwanto

Satiti

et al. 2021

j.penelit.has.kehutan

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Kayu kurang dikenal yang berasal dari hutan alam saat ini merupakan alternatif bahan baku yang digunakan oleh industri perkayuan nasional. Optimalisasi pemanfaatan kayu kelompok ini memerlukan informasi mengenai ketahanan terhadap serangan jamur pelapuk dari setiap jenis kayu yang digunakan. Dalam penelitian ini dilakukan pengujian ketahanan lima jenis kayu kurang dikenal bagian gubal dan teras, dan pengkaratan logam yang berikatan dengan kayu diuji terhadap jamur menggunakan metode Kolle-flask. Kelarutan kayu dalam NaOH 1% dianalisis mengacu pada standar ASTM D 1110-84. Hasil penelitian menunjukkan bahwa Albizia sp. dan Syzygium sp. diklasifikasikan dalam kelompok kayu-tahan (kelas II), Santiria sp. dan Lithocarpus ewyckii termasuk kayu agak-tahan (kelas III), dan Xanthophyllum excelsum termasuk kayu tidak-tahan (kelas IV). Kehilangan berat terbesar terjadi pada kayu gubal, Xanthophyllum excelsum yang diumpankan kepada Pycnoporus sanguineus. Rata-rata kehilangan berat kayu teras lebih rendah (termasuk kelas II) dibandingkan dengan kehilangan berat kayu gubal (Kelas III). Kehilangan berat tertinggi dari kayu yang berikatan dengan sekrup dijumpai pada kayu Syzygium sp. yang disekrup dan diumpankan kepada Polyporus sp. Rata-rata kehilangan berat kayu yang disekrup lebih tinggi dibandingkan dengan kayu tanpa sekrup, sedangkan kehilangan berat tertinggi dari sekrup yang telah berikatan dengan kayu terjadi pada Xanthophyllum excelsum kemudian Syzygium sp. yang diumpankan pada jamur Polyporus arcularius. Didapatkan bubuk karat terbanyak dalam kayu Syzygium sp. yang diumpankan kepada jamur Polyporus arcularius. Lima jenis jamur memiliki kemampuan sedang dan tiga jenis lainnya berkemampuan rendah dalam melapukkan kayu. Pengaruh jamur dalam pengkaratan sekrup semuanya rendah.

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“…W)). Stand, tree and soil characteristics were detailed in previous reports [6,28]. In all, 45 trees (15 per site) were randomly sampled from the selected sites.…”

Section: Study Materialsmentioning

confidence: 99%

Intra-Ring Variations and Interrelationships for Selected Wood Anatomical and Physical Properties of Thuja Occidentalis L.

Bouslimi

Koubaa

Bergeron

2019

Forests

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Intra-ring variation in wood density and tracheid anatomical properties and wood property interrelationships were investigated in Thuja occidentalis L. Samples were taken from three stands in Abitibi–Témiscamingue, Quebec, Canada. The structure of T. occidentalis wood is simple, homogeneous and uniform, which is desirable for wooden structures that require wood uniformity. From early- to latewood, cell and lumen diameter decreased, while cell wall thickness increased. These changes led to an increase of the cell wall proportion. Wood ring density and width interrelationships were weaker in mature wood compared to juvenile wood. Earlywood density is the more important in determining mature wood density than latewood density and proportion. Earlywood density explains 92% and 89% of the variation in juvenile and mature wood density, respectively. The negative relationship between ring density and width, although significant, was low and tends to weaken with increasing tree age, thus providing the opportunity for silvicultural practices to improve both growth and wood density. Ring width was positively and strongly correlated to early- and latewood width, but negatively correlated to tracheid length and latewood proportion. Accordingly, increases in ring width produce smaller tracheids and wider earlywood without a corresponding increase in latewood. Practical implications of the results are discussed.

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Variation of Brown Rot Decay in Eastern White Cedar (Thuja occidentalis L.)

Cited by 14 publications

References 32 publications

Log moisture capacity does not predict epixylic bryophyte growth under thinned and unthinned forest canopies

Log moisture capacity does not predict epixylic bryophyte growth under thinned and unthinned forest canopies

Ketahanan Lima Jenis Kayu Terhadap Serangan Delapan Jenis Jamur Pelapuk

Intra-Ring Variations and Interrelationships for Selected Wood Anatomical and Physical Properties of Thuja Occidentalis L.

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