Canadian Journal of Forest Research
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The effect of cupric carbonate on root morphology of containerized mycorrhizal pine seedlings Loblolly (Pinustaeda L.), longleaf (Pinuspalustris Mill.), shortleaf (Pinusechinata Mill.), and eastern white (Pinusstrobus L.) pine seedlings inoculated with Pisolithustinctorius (Pers.) Coker & Couch (Pt) were raised in a greenhouse in containers painted with latex paint containing 50 g/L cupric carbonate (CuCO3 ). To determine the effects of CuCO3...
Canadian Journal of Forest Research - Tập 15 Số 3 - Trang 586-592 - 1985
Magnesium deficiency symptoms associated with sugar maple dieback in a Lower Laurentians site in southeastern Quebec 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... ...
Canadian Journal of Forest Research - Tập 18 Số 10 - Trang 1265-1269 - 1988
Etiology of sugar maple decline in four Pennsylvania stands Tree-ring analysis was used to study historical patterns of basal area increment (BAI) by healthy (0–5% dieback) and declined (greater than 30% dieback) overstory sugar maples (Acersaccharum Marsh.) in four stands in Pennsylvania. The objectives were to establish if and when BAI decreased in healthy and declined trees and to identify causal factors associated with decreased BAI. Reduction... ...
Canadian Journal of Forest Research - Tập 23 Số 11 - Trang 2395-2402 - 1993
Disturbance regime of a cold temperate forest as deduced from tree-ring patterns: the Tantaré Ecological Reserve, Quebec 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... ...
Canadian Journal of Forest Research - Tập 20 Số 8 - Trang 1228-1241 - 1990
Changes in phosphorus nutrition of sugar maple along a topographic gradient in the Quebec Appalachians In a typical sugar maple (Acersaccharum Marsh.) stand in the Quebec Appalachians, foliar phosphorus concentrations increased from the bottom to the top of the hill, while the humus form varied from a mull to a mor along the same slope sequence. Although limited, these observations within one stand presumably subjected to the same anthropogenic stresses, including acid loading, are consist... ...
Canadian Journal of Forest Research - Tập 19 Số 1 - Trang 135-137 - 1989
Phosphorus-fixing potential of Ah and H horizons subjected to acidification 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... ...
Canadian Journal of Forest Research - Tập 19 Số 1 - Trang 132-134 - 1989
Seasonal nutrient transfers by foliar resorption, leaching, and litter fall in a northern hardwood forest at Lake Clair Watershed, Quebec, Canada A descriptive temporal model was used to evaluate the flow of macronutrients (N, P, K, Ca, and Mg) between the forest canopy and incident precipitation for the Lake Clair Watershed (LCW) located in the northern hardwood forest region of Quebec, Canada. The model also quantified the resorption mechanism. Wet precipitation, throughfall, foliage, and litter fall data for 1997 were used to qu... ...
Canadian Journal of Forest Research - Tập 31 Số 2 - Trang 333-344 - 2001
A methodology for estimating canopy disturbance frequency and intensity in dense temperate forests Analysis of the frequency of past moderate and high-intensity disturbances has been hindered in forests of complex age structure by methodological problems. A methodology is proposed for developing a disturbance chronology in such stands by identifying the probable date of canopy accession for each sample tree. Canopy accession dates are based on an evaluation of radial growth pattern and... ...
Canadian Journal of Forest Research - Tập 19 Số 5 - Trang 651-663 - 1989
The time course of diameter increment responses to selection harvests in Acer saccharum We used dendroecological techniques to analyze the temporal pattern in diameter growth following selection harvests in stands dominated by Acer saccharum Marsh. in central Ontario and examined differences in growth responses related to tree size, damage, and orientation relative to canopy gaps. While dendroecological studies have commonly assumed that trees show immediate growth responses... ...
Canadian Journal of Forest Research - Tập 34 Số 7 - Trang 1525-1533 - 2004
Tree seedling growth and mortality responses to manipulations of calcium and aluminum in a northern hardwood forest To assess potential forest compositional responses to exchangeable soil calcium (Caexch ) and aluminum (Alexch ), we characterized light-dependent growth and mortality of tree seedlings under amendments of CaCl2 and AlCl3 at Hubbard Brook Experimental Forest (HBEF), New Hampshire, U.S.A. Seedlings of Acer sa... ...
Canadian Journal of Forest Research - Tập 32 Số 6 - Trang 954-966 - 2002
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