Relationships Between External Features and Trunk Rot in Living Yellow Birch

Lavallée, André; Lortie, Marcel

doi:10.5558/tfc44005-2

Cited by 9 publications

(8 citation statements)

References 3 publications

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“…According to the results of the current research, in all treatments, 97 % of scuff, scrape, and gouges occurred within the fi rst 1.3 m of the bole (Nikooy 2007, Behjou 2014. Other studies have shown that wounds with >100 cm 2 of exposed sapwood are likely to develop decay (Hesterberg 1957, Lavallee andLortie 1968). The frequency of overall damage for the second treatment in this study is higher than those reported in the literature for damage from felling in individual tree selection (2.4 %).…”

Section: Rasprava I Zaključcicontrasting

confidence: 58%

Residual Trees Response to Selective Cutting Operations in Caspian Forests

Behjou

Motazeh

2020

Nova meh. šumar. (Online)

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Damages to residual trees caused by felling operation were assessed in the stands of a Caspian hardwood forest. Following the felling operation, a field survey was done to collect data of all residual trees (species, DBH, height) and of tree wounds (size class, location, intensity of damage). Different harvesting intensities were studied, and treatments were replicated three times. The results showed that the treatment with the medium and high harvest intensity was found to cause the highest percentage of damage and the largest stem wounds. It is concluded that harvesting intensity should be limited to 3 trees/ha during each harvesting operation to reduce the extent of tree damage and thus future financial loss.

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Section: Rasprava I Zaključcicontrasting

confidence: 58%

Residual Trees Response to Selective Cutting Operations in Caspian Forests

Behjou

Motazeh

2020

Nova meh. šumar. (Online)

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“…There was an overlap for these data as there is an 80-percent chance that wounds of 130 to 200 square inches will develop decay within 20 years. Lavallee and Lortie (1968) observed similar effects with the removal of only 90 square inches of bark from yellow birch trees. aAverage percent reduction in size of wounds in parentheses.…”

Section: Discussion and Summarymentioning

confidence: 55%

“…Damage is largely confined to saplings and poles, though sawtimber trees also are wounded (Lamson and Miller 1983). Research has shown that exposed sapwood wounds of more than 100 square inches are likely to develop decay (Hesterberg 1957;Lavallee and Lortie 1968). Lamson and Miller (1 983) reported results from stands of pole-and small sawtimber-size trees logged with a rubber-tired skidder on relatively gentle to flat slopes.…”

Section: Introductionmentioning

confidence: 99%

Closure of logging wounds after 10 years

Smith¹,

Miller²,

Schuler³

1994

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Closure of logging wounds on 96 sample trees was evaluated after 2,5, and 10 years for Appalachian hardwood trees in north-central West Virginia. For yellowpoplar, northern red oak, black cherry, and white oak, many small wounds, 1 to 50 square inches in size, closed between 5 and 10 years after logging. For larger wounds, 50 to 200 square inches, it appears that many of these wounds may not close for at least 15 or perhaps 20 years after logging. Recommendations are provided to minimize logging wounds on residual trees in partially cut stands.

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“…These are known to be related to a higher probability of stem mortality (Guillemette et al 2008) and are usually associated with decayed wood (Lavallée and Lortie 1968;Boulet 2007). The effect of fungal infections on tree value increased with stem diameter, probably because larger trees are generally older and contain a greater proportion of decayed wood (Basham 1991).…”

Section: Discussionmentioning

confidence: 99%

“…While the incidence of frost cracks has been associated with larger trees (Burton et al 2008), we did not observe an interaction between cracks and stem diameter in our study. Cracks are often associated with undesirable internal characteristics, such as discoloration or decay (Shigo 1966;Lavallée and Lortie 1968), which in turn may decrease the value of raw material designated for appearance wood products (Wiedenbeck et al 2004).…”

Section: Discussionmentioning

confidence: 99%

Integrating standing value estimations into tree marking guidelines to meet wood supply objectives

et al. 2014

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The identification of low-vigor trees with potential for sawlog production is a key objective of tree marking guidelines used for partial cuts in northern hardwoods. The aim of this study was to measure the impact of various vigor-related defects on the monetary value of hardwoods. To achieve this, we sampled 64 sugar maple (Acer saccharum Marshall) and 32 yellow birch (Betula alleghaniensis Britton) trees from two locations in southern Quebec, Canada. We identified over 420 defects, which were grouped into 8 categories. The trees were then harvested and processed into lumber, and the value per unit volume of each stem was calculated from the value of the product assortment (lumber, chips, and sawdust). We found that visible evidence of fungal infections (sporocarps and (or) stroma) and cracks had the largest negative influence on value in both species. A model that included these defects was almost as good at predicting value as one that included a specifically designed quality classification. A more accurate assessment of value could be achieved using wood decay assessment tools and (or) by considering site-specific variables. Results from this study showed that visual identification of fungal infections and cracks could be used to enhance tree marking guidelines for hardwoods. This would meet both the silvicultural objective of selection cuts, by removing low-vigor trees, and the wood supply objective, by improving stem quality assessment prior to harvest.Résumé : L'identification des arbres moribonds qui ont un potentiel pour la production de billes de sciage est un objectif clé des directives de martelage lors de coupes partielles dans les peuplements de feuillus nordiques. Cette étude avait pour but de mesurer l'impact de divers défauts reliés à la vigueur sur la valeur monétaire des feuillus. À cette fin, nous avons échantillonné 64 érables à sucre (Acer saccharum Marshall) et 32 bouleaux jaunes (Betula alleghaniensis Britton) à deux endroits dans le sud du Québec, au Canada. Nous avons identifié plus de 420 défauts que nous avons regroupés en huit catégories. Ces arbres ont ensuite été récoltés et transformés en sciage et la valeur par unité de volume de chaque tige a été calculée à partir de la valeur de l'assortiment de produits (sciages, copeaux et sciures). Nous avons constaté que les signes visibles d'infection fongique (sporocarpes ou stroma) et les fentes avaient la plus grande influence négative sur la valeur des deux espèces. Un modèle qui incluait ces défauts était presque aussi bon pour prédire la valeur qu'un modèle basé sur un système de classes de qualité spécifiquement conçu. On pouvait obtenir une évaluation plus précise de la qualité en utilisant des outils pour évaluer la carie du bois ou en tenant compte de variables propres au site. Les résultats de cette étude montrent que l'identification visuelle des infections fongiques et des fentes peut être utilisée pour améliorer les directives de martelage chez les feuillus. Cela devrait satisfaire tant les objectifs sylvicoles des coupes de j...

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Relationships Between External Features and Trunk Rot in Living Yellow Birch

Abstract: Although broken bmnches and bqsanch stubs are t h e m o s t frequently encoz~ntered external signs of defects in the t?.unlc of yellozu birch, t h e y zue?.e found t o be

Cited by 9 publications

References 3 publications

Residual Trees Response to Selective Cutting Operations in Caspian Forests

Residual Trees Response to Selective Cutting Operations in Caspian Forests

Closure of logging wounds after 10 years

Integrating standing value estimations into tree marking guidelines to meet wood supply objectives

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