Effets de l’intensité du brûlage dirigé et de la scarification sur la diversité des espèces végétales dans un peuplement de pin gris (Pinus banksiana Lamb)

Tellier, Renée; Duchesne, Luc; Ruel, Jean‐Claude; McAlpine, Robert S.

doi:10.1080/11956860.1995.11682280

Cited by 15 publications

(8 citation statements)

References 17 publications

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“…Several other studies have documented the neutral effect of forest harvest on plot level richness (Deal 2001, Kern et al 2006, MacDonald and Fenniak 2007, Kembel et al 2008) and the influence of time since disturbance on the evolution of species richness (Tellier et al 1995). In contrast, β diversity increased from unharvested control, partial cut, to low-retention cut plots in three of the four sites.…”

Section: Discussionmentioning

confidence: 73%

Partial harvests in the boreal forest: response of the understory vegetation five years after harvest

Bescond¹,

Fenton²,

Bergeron³

2011

The Forestry Chronicle

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In the eastern boreal forest of Canada long fire cycles allow for a significant portion of stands to become old growth. These old-growth boreal forest stands are subjected to secondary disturbances that create uneven structure, which supports a variety of types of organisms. In order to maintain the proportion of stands with uneven structure on the landscape, partial cuts have been suggested as a management technique that could create or maintain these uneven structures. This study compares the effects of partial and low-retention harvests and un-harvested control on understory plants in four sites five years after harvest. The relative abundance of species was examined by a habitat group. While richness did not vary among treatments, increasing severity of harvest favoured pioneer species that prefer disturbed mineral soil and high light levels. Sites with thicker organic layers that were harvested in the winter were significantly less impacted by both partial and lowretention harvest. Canopy opening alone had little impact in the three most northern sites. As old-growth black spruce forests are open by nature, this suggests that soil perturbation is a bigger driver of community change after harvest than proportion of canopy removed for this forest type.Key words: Quebec, Picea mariana, harvest, variable retention, sustainable forest management, understory, structural retention, vegetation résumé Dans la forêt boréale de l'Est du Canada, les longs cycles de feu permettent à une portion importante des peuplements d' évoluer en vieille forêt. Ces peuplements sont soumis à des perturbations secondaires qui entraînent la création de structures inéquiennes servant de support à une diversité d' organisme. Afin de maintenir, dans le paysage, une proportion de peuplement ayant une structure inéquienne, il est envisagé d'utiliser les coupes partielles en tant qu' outil sylvicole dans l'aménagement forestier pour créer ou maintenir des peuplements ayant des structures proches de celles que l' on retrouve dans les vielles forêts. Cette étude compare l' effet des coupes partielles et des coupes à faible rétention sur les plantes de sous-bois dans quatre dispositifs cinq ans après la récolte. L'abondance relative des espèces a été examinée par groupe d'habitat. Alors que la richesse ne variait pas parmi les traitements, l'augmentation de la sévérité de la récolte a favorisé les espèces pionnières qui préfèrent les sols perturbés et la lumière. Les sites, où la couche de matière organique est la plus épaisse et dans lesquels la récolte a été réalisée en hiver, ont été moins affectés par les coupes partielles et de faible réten-tion. L' ouverture de la canopée a eu peu d'impact dans les trois sites les plus nordiques. Les vieilles forêts d' épinette noire étant ouvertes naturellement, ceci suggère que les perturbations du sol ont un rôle plus important sur les changements dans les communautés suite à la récolte que la proportion de la canopée récoltée dans ce type de forêt.

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Section: Discussionmentioning

confidence: 73%

Partial harvests in the boreal forest: response of the understory vegetation five years after harvest

Bescond¹,

Fenton²,

Bergeron³

2011

The Forestry Chronicle

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“…Low fire intensities stimulated Corylus cornuta sprouting and height growth of Rubus ideaus (Johnston and Woodard 1985). Biomass nutrient retention (Duchesne and Tellier 1997) and soil seed bank and competing vegetation dynamics along with P. resinosa and P. strobus seedling performance are also affected by prescribed burning intensity (Tellier et al 1995(Tellier et al , 1996Whittle et al 1997). Soil microbial activity and diversity were also affected by fire intensity (Duchesne and Wetzel 2000;Staddon et al 1998aStaddon et al , 1998b.…”

Section: Discussionmentioning

confidence: 99%

“…Fire intensity has been shown to correlate with P. banksiana regeneration (Weber et al 1987) and post-fire abundance of P. aquilinum (Tellier et al 1995). Low fire intensities stimulated Corylus cornuta sprouting and height growth of Rubus ideaus (Johnston and Woodard 1985).…”

Section: Discussionmentioning

confidence: 99%

“…The most important species in terms the biomass and frequency (in decreasing order of importance) were P. aquilinum, V. angustifolium, V. myrtilloides, Amelanchier sp., P. pumila, Comptonia peregrina, Kalmia angustifolia, Yellow Panic-grass (Panicum xanthophysum), and Houton's Sedge (Carex houghtonii) (Tellier et al 1995(Tellier et al , 1996.…”

Section: Treatmentsmentioning

confidence: 99%

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Effect of Fire Intensity and Depth of Burn on Lowbush Blueberry, <em>Vaccinium angustifolium</em>, and Velvet Leaf Blueberry, <em>Vaccinium myrtilloides</em>, Production in Eastern Ontario

Duchesne

Wetzel

2004

Can Field Nat

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The effects of prescribed fire intensity and depth of burn were investigated on Lowbush Blueberry (Vaccinium angustifolium) and Velvet Leaf Blueberry (Vaccinium myrtilloides) stem density, blueberry production and the number of blueberries/stem in a clear-cut Jack Pine, Pinus banksiana, ecosystem of eastern Ontario. Blueberry production and stem density were significantly (P < 0.001) increased by low intensity prescribed fires of 597 and 1268 kW/m. In contrast, prescribed fires of medium and high intensities did not affect blueberry production and stem density. The number of blueberries/stem was not affected (P = 0.056) by prescribed burning, two years after treatment. Pearson's multiple correlation analysis showed that blueberry production (R: -0.683, P < 0.01), stem density (R: 0.733, P < 0.01) and the number of blueberries/stem (R: 0.803, P < 0.01) correlated with depth of burn. As well, blueberry production (R: 0.507, P < 0.05) and stem density (R: -0.504, P < 0.05) correlated with fire intensity. Depth of burn was a better predictor of berry production and stem density than fire intensity. These results suggest that only low intensity fires with little penetrating effect in the ground should be used to manage blueberry crops.

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“…to clear-cutting alone (Tellier et al 1995a). Competition by non-crop vegetation on outplanted Pinus strobus L. and Pinus resinosa Ait.…”

Section: Introductionmentioning

confidence: 99%

Effect of site preparation on the nutrient content of non-crop vegetation in a jack pine clear-cut

Duchesne¹,

Tellier²

1997

The Forestry Chronicle

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The nutrient (N, P, K, Mg, and Ca) content of the aboveground Le contenu en elements nutritifs (N,P,K, Mg et Ca) de la vegeliving non-crop vegetation of a jack pine (Pinus banksiana tation croissant au dessus du sol, ne faisant pas partie de la recolte Lamb.) clear-cut in eastern Ontario was investigated for two years et provenant d'me coupe a blanc de pin gris (finus banhiam Lamb.) after site preparation, which consisted of prescribed burning de l'est de l'ontario, a ete analyse au cours des d e n annees under different fie intensities and disk trencher scarification. ~~t a l suivant la preparation du site effectuee par brillage dirige selon difplant nutrient content generally followed biomass accumulaferentes intensites de b~lage, et par scarifiage au moyen d'une herse tion with higher levels of plant N, P, ca, and in clear-cuts and a disques. Le contenu total en elements nutritifs des plantes corscarified sites than in burned-over sites, In the first growing respondait generalement a l'accumulation de biomasse, les plus season, concentrations of N, P, and K were higher in the vegehauts niveaux dans les plantes de N, P, Ca, et K se retrouvant dans les coupes a blanc et les sites scarifies plut6t que dans les sites br&les. tation of burned-over plots than in scarified and clear-cut plots.de saison de croissance, les concentrations Mg concentrations were greater in burned-over and scarified , , N, P, et etaient plus devks dans les des parcelles bdks plots than in the clear-cut plots. Ca concentrations did not differ que dans les parcelles a blanc et scarifiees. L~~ concenamong the of and and the total amount trations en Mg Ctaient plus &levees dans les parcelles bnilkes et scarof N, p and K in aboveground non-croP vegetation were coneifiees que dans les parcelles coupees a blanc. Les concentrations lated well with fire intensity at the end of the first growing seaen Ca n'ont pas varit selon les traitements. Les concentration en son whereas only K concentration and quantities were correlat-P et K, ainsi que le la quantite totale de N, P, et K dans la v t g b ed to fire intensity within two years after treatment.tation croissant au-dessus du sol et ne faisant pas partie de la recolte etaient bien correlees avec l'intensite du brillage a la fin de la preKey words: prescribed burning; disk trenching scarification; miere saison de croissance alors que seulement les concentrations fire; Pinus banksiana; nutrients et les quantites de K etaient correlees a l'intensite du brillage au cours des deux annees suivant le traitement.

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Effets de l’intensité du brûlage dirigé et de la scarification sur la diversité des espèces végétales dans un peuplement de pin gris (Pinus banksiana Lamb)

Cited by 15 publications

References 17 publications

Partial harvests in the boreal forest: response of the understory vegetation five years after harvest

Partial harvests in the boreal forest: response of the understory vegetation five years after harvest

Effect of Fire Intensity and Depth of Burn on Lowbush Blueberry, <em>Vaccinium angustifolium</em>, and Velvet Leaf Blueberry, <em>Vaccinium myrtilloides</em>, Production in Eastern Ontario

Effect of site preparation on the nutrient content of non-crop vegetation in a jack pine clear-cut

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