Population and Community Structure and Dynamics of Fungi in Decaying Wood

Rayner, A. D. M.; Todd, N.K.

doi:10.1016/s0065-2296(08)60090-7

Cited by 178 publications

(110 citation statements)

References 51 publications

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“…For example, moisture content has been shown to drop for a period after tree mortality before increasing (Lambert et al 1980). A significant reduction in moisture may reduce fungal metabolic activity (Rayner and Todd 1979), consequently delaying the structural decay of snags.…”

mentioning

confidence: 99%

Snag longevity under alternative silvicultural regimes in mixed-species forests of central Maine

Garber¹,

Brown²,

Wilson³

et al. 2005

Can. J. For. Res.

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Predictions of snag longevity, defined here as the probability of snag survival to a given age, are key to designing silvicultural regimes that ensure their availability for wildlife and form an important component of carbon flow models. Species, diameter at breast height, stand density, management regime. and agent of tree mortality were assessed for their effect on snag longevity in a long-term siivicultural study on the Penobscot Experimental Forest in central Maine. Snag recruitment and fall data from USDA Forest Service inventories between 1981 and 1997 were analyzed using parametric survival analysis. A Weibull model fit the data best, indicating a significant lag time followed by rapid . fall rates. Half-times varied among species. with Thuja occidentalis L. having the longest (10 years) and Picea species the shortest (6 years). Snag longex~ity was signilicantly greater with increasing diameter and decreased with increasing stand density. Agent of mortality and silvicultural treatment were also significant. Two models were developed for estimating probability of snag survival over time. one that included predictor variables unique to the silvicultural systems study on the Penobscot Experimental Forest and one using predictor variables available in most standard inventories. Snag survival models can easily be incorporated into comprehensive forest dynamics models to facilitate estimates of wildlife habitat structure and carbon flow. R b m B : La prediction de la longevit6 des chicots, dhfinie ici c o m e Ctant la probabilite de survie dles chic06 est un Clement cl6 de la conception des regimes sylvicoles qui en assurent la disponibilitk pour la faune et constitue une composante importante des modkles de flux de carbone. L'espitce, le dinmktre 2 hauteur de poitrine. la densite du peuplement, le r6gin1e d'itn~Cnagement ed la cause de mortalit6 des arbres ont 6t6 Cvalu6s pour connaftre lew effet sur la long6viti5 des chicots dans le cadre d'une etude sylvicole h long terme B la For& exp6rimeatale de Penobscot situke dam le centre du Maine, aux ~t a t s -~n i s .Les donnCes d'inventaue de 1981 A 1997 du USDA Forest Senice sur le recrutelaeht et la chute des chicots ont 6t6 Ctudihes h I'aide d'une analyse parametrique de survie. Un nnoditle de Weibull s'est le mieux ajust6 aux donnCea ce qui indique qu'il y a une importante periode de latence suivie par un taux de chute rapide. La demi-vie des chicots variait selon I'espsce, avec la plus longue (10 am) associh B Thuja occidentaZis L. et la plus courte (6 ans) & Picea spp. La longkvit6 des chicots etait significativement plus forte lorsqne leur diamktre augmentait et plus faible lorsque la densit6 du peuplement augmentait. La cause de mortalitt? et le traitement sylvicole etatent Cgalemen~ importants. Deux modeles ont C d dCvelopp6s pour estimer la probabilite de suwie des chicots en fonction du ;temps. Le premier inclut des variables de prediction propres aux systkmes sylvicoles de la Fort% exp6ri-mentale de Penobscdt et le deuxikme utilise des variab...

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mentioning

confidence: 99%

Snag longevity under alternative silvicultural regimes in mixed-species forests of central Maine

Garber¹,

Brown²,

Wilson³

et al. 2005

Can. J. For. Res.

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“…Recent establishment from basidiospores is associated with relatively small individuals, whereas old mycelia occupy larger areas (Rayner & Todd, 1979;Stenlid, 1985). For wood-decay fungi, extremes range from a few mm in Coriolus versicolor (Rayner & Todd, 1979) to 900 m in Phellinus weirii (Dickman & Cook, 1989). Another factor that may limit the size of individual mycelia is competition for resources within or between species.…”

Section: Discussionmentioning

confidence: 99%

“…Fries (1987) found that actions between genetically different strains of a sporocarps of Suillus luteus (L. ex Fr.) S. F. Gray species as a tool for defining individual mycelia has within a forest stand represented different clones and been developed (Rayner & Todd, 1979; Rayner et that trees could be host to more than one clone. Sen al., 1984).…”

Section: Introductionmentioning

confidence: 99%

Population structure and dynamics in Suillus bovinus as indicated by spatial distribution of fungal clones

1990

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SUMMARYThe spatial distribution of clones in the ectomycorrhizal fungus Suillus bovinus (L. ex Fr.) O. Kuntze was studied from somatic incompatibility pairings of isolates in four Scots pine {Pinus sylvestris L.) stands with different forest history. A pattern of increasing clonal size, decreasing clonal number, and decreasing fruiting per unit area, was found with increased forest age and relatively little disturbance. Establishment by spores was important on disturbed sites, while mycelial spread increased in importance with decreased disturbance. The number of clones was found to be 800 ha~^ in younger forest stands and decreased to between 25-130 ha~^ in mature stands. At the same time the diameter of the area occupied by a single clone increased from 1-3 m to 30 m. Implications of the observations are discussed in terms of ecological strategies and population dynamics.

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“…Tests were run to see if populations of the more commonly isolated basidiomycetes consisted of more than one colony per tree. Selected isolates of each fungus t?om the same tree were paired in various combinations on 3% malt agar, and the occurrence of mutual antagonism used to identify separate incompatibility groups (Rayner & Todd 1979, 1982a. The nature,, of the antagonism zone was first ascertainedby pairing isolates from different trees, or by pairing tissue isolates from within and between different fruitbody collections.…”

Section: Stem Surveymentioning

confidence: 99%

A decay study of windthrown indigenous trees

Hood

Sandberg

Kimberley

1989

New Zealand Journal of Botany

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The fungal communities within six stems each of matai (Prumnopitys taxifolia (D. Don) Laubenf.) and rimu (Dacrydium cupressinum Lamb.) were studied nearly four years after windthrow in a dense podocarp forest in the central North Island. There was a significant decrease in yield of isolates of all fungi, as well as basidiomycetes in particular, with increasing radial depth beneath the cambium (P < 0.01). The decrease was greater for matai than for rimu (P < 0.01). Fewer isolates of either group were obtained from heartwood (0q5% of attempts) than from sapwood and rimu transition wood (13-43%; P < 0.01). Among the basidiomycetes, 85% of isolates belonged to eight species or generic groups, six of which varied significantly in occurrence between trees (P < 0.05). The condition of the root systems in uprooted trees of four species (matai; rimu; miro, Prumnopitys ferruginea (D. Don) Laubenf.; tawa, Beilschmiedia tawa (A. Cunn.) Benth. et Hook. f. ex Kirk) was evaluated in the same forest. On matai and rimu trees, a greater mean percentage of emergent roots was decayed at the centre of the exposed surface of the root-soil plate than around the margin (P < 0.05). Matai and rimu roots were significantly more decayed in this exposed central zone than were those of miro and tawa (P < 0.05). Rigidoporus catervatus (Berkeley) Comer was shown to be responsible for a white pocket rot in the heartwood and roots of living trees, and sapwood of fallen logs.

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Population and Community Structure and Dynamics of Fungi in Decaying Wood

Cited by 178 publications

References 51 publications

Snag longevity under alternative silvicultural regimes in mixed-species forests of central Maine

Snag longevity under alternative silvicultural regimes in mixed-species forests of central Maine

Population structure and dynamics in Suillus bovinus as indicated by spatial distribution of fungal clones

A decay study of windthrown indigenous trees

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