Canadian Journal of Forest Research

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Magnesium deficiency symptoms associated with sugar maple dieback in a Lower Laurentians site in southeastern Quebec
Canadian Journal of Forest Research - Tập 18 Số 10 - Trang 1265-1269 - 1988
B. Bernier, M. Brazeau
Observations made in 1987 on sugar maple (Acersaccharum Marsh.) dieback in the deciduous forest of the Lower Laurentians, northwest of Quebec City, revealed the occurrence of magnesium deficiency in various sites. Visual foliar symptoms observed on sugar maple in a severely declining stand growing on well-drained, stony, loamy-sand soil of granitic origin are briefly described and illustr...... hiện toàn bộ
Disturbance regime of a cold temperate forest as deduced from tree-ring patterns: the Tantaré Ecological Reserve, Quebec
Canadian Journal of Forest Research - Tập 20 Số 8 - Trang 1228-1241 - 1990
Serge Payette, Louise Filion, Ann Delwaide
The recent history and disturbance regime of an old-growth sugar maple – yellow birch forest located in the Tantaré Ecological Reserve, Québec, were determined using tree-ring growth patterns of individual trees that had undergone suppression and release. Within a sampling quadrat (0.25 ha) where all living and dead trees were mapped, the age, size, and spatial pattern of gaps formed sinc...... hiện toàn bộ
Phosphorus-fixing potential of Ah and H horizons subjected to acidification
Canadian Journal of Forest Research - Tập 19 Số 1 - Trang 132-134 - 1989
David Paré, B. Bernier
Invitro experiments on acidification of Ah and H horizons of soils originating from sugar maple (Acersaccharum Marsh.) stands in the Quebec Appalachians revealed that the amount of phosphate released to water by H horizons was not limited by acidification, while the phosphorus-fixing capacity of Ah horizons in the presence of added soluble phosphate increased linearly with increasing acid...... hiện toàn bộ
Résistance comparée de l'épinette blanche et du sapin baumier au renversement
Canadian Journal of Forest Research - Tập 32 Số 4 - Trang 642-652 - 2002
S. Meunier, Jean‐Claude Ruel, G. Laflamme, Alexis Achim
Information on eastern Canadian tree species vulnerability to windthrow is scarce. Some statements on relative species vulnerability have been made but they rely on empirical observations, which are often difficult to generalize. In this context, a study was conducted to compare the overturning resistance of balsam fir (Abies balsamea (L.) Mill.) and white spruce (Picea glauca (Moench) Vo...... hiện toàn bộ
Windthrow hazard modelling in boreal forests of black spruce and jack pine
Canadian Journal of Forest Research - Tập 35 Số 11 - Trang 2655-2663 - 2005
Jean-Gabriel Elie, Jean‐Claude Ruel
In this study we compare the mechanical resistance of black spruce (Picea mariana (Mill.) BSP) and jack pine (Pinus banksiana Lamb.) and quantify the effect of species, forest cover type, and soil conditions on tree stability. To measure tree resistance to an applied load, 85 trees were pulled over using a cable and winch system. Predictive equations for the maximum turning moment that a ...... hiện toàn bộ
Complete chloroplast genome sequence of the avocado: gene organization, comparative analysis, and phylogenetic relationships with other Lauraceae
Canadian Journal of Forest Research - Tập 46 Số 11 - Trang 1293-1301 - 2016
Yu Song, Xin Yao, Yun‐Hong Tan, Yi Gan, Richard T. Corlett
A New Index Representing Individual Tree Competitive Status
Canadian Journal of Forest Research - Tập 3 Số 4 - Trang 495-500 - 1973
James A. Moore, Carl A. Budelsky, Richard C. Schlesinger
A new competition index, modified Area Potentially Available (APA), was tested in a complex unevenaged stand composed of 19 different hardwood species. APA considers tree size, spatial distribution, and distance relationships in quantifying intertree competition and exhibits a strong correlation with individual tree basal area growth. The most important characteristic of APA is its potent...... hiện toàn bộ
Response of forage yield and quality to thinning and fertilization of young forests: implications for silvopasture management
Canadian Journal of Forest Research - Tập 44 Số 4 - Trang 281-289 - 2014
Pontus M.F. Lindgren, Thomas P. Sullivan
Integration of trees with forage and livestock production (silvopastoralism) could increase productivity of forest and range resources in western North America. Pre-commercial thinning (PCT) and fertilization are two silvicultural practices that could enhance silvopasture. We tested two hypotheses (H): that yield and quality of forage would be enhanced by (H1) heavy t...... hiện toàn bộ
A calibrateable site index model for Pinus kesiya plantations in southeastern Africa
Canadian Journal of Forest Research - Tập 32 Số 11 - Trang 1916-1928 - 2002
Kalle Eerikäinen, Danaza Mabvurira, Ladislaus Nshubemuki, Jussi Saramäki
The aim of the study was to develop a site index model for Pinus kesiya Royle ex Gordon plantations in southeastern Africa based on the relationship between the dominant height and stand age. Conversely, analysis of dominant height and age data showed that the growth patterns of plantations were different. In addition, the asymptotes and forms of standwise dominant height curves varied wi...... hiện toàn bộ
The role of climate on present and past vitality of silver fir forests in the Vosges mountains of northeastern France
Canadian Journal of Forest Research - Tập 19 Số 9 - Trang 1110-1117 - 1989
Michel Becker
A dendroecological study was carried out on 196 sites distributed throughout the whole natural range of silver fir (Abiesalba Miller) in the Vosges mountains of northeastern France. At each site, six dominant trees were bored to the pith. Stand age varied, intentionally, from 40 to 180 years. All tree rings were measured and crossdated; data were then standardized with reference to the me...... hiện toàn bộ
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