Canadian Journal of Forest Research
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The effect of cupric carbonate on root morphology of containerized mycorrhizal pine seedlings
Canadian Journal of Forest Research - Tập 15 Số 3 - Trang 586-592 - 1985
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 on root development and
morphology, seedlings we...
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
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 illustrated.
Mag...
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
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
since the mid...
Etiology of sugar maple decline in four Pennsylvania stands
Canadian Journal of Forest Research - Tập 23 Số 11 - Trang 2395-2402 - 1993
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 in BAI o...
Changes in phosphorus nutrition of sugar maple along a topographic gradient in the Quebec Appalachians
Canadian Journal of Forest Research - Tập 19 Số 1 - Trang 135-137 - 1989
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
consistent with ...
Phosphorus-fixing potential of Ah and H horizons subjected to acidification
Canadian Journal of Forest Research - Tập 19 Số 1 - Trang 132-134 - 1989
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
acidity. This...
Seasonal nutrient transfers by foliar resorption, leaching, and litter fall in a northern hardwood forest at Lake Clair Watershed, Quebec, Canada
Canadian Journal of Forest Research - Tập 31 Số 2 - Trang 333-344 - 2001
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
quantify th...
The time course of diameter increment responses to selection harvests in Acer saccharum
Canadian Journal of Forest Research - Tập 34 Số 7 - Trang 1525-1533 - 2004
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 to gap
c...
Tree seedling growth and mortality responses to manipulations of calcium and aluminum in a northern hardwood forest
Canadian Journal of Forest Research - Tập 32 Số 6 - Trang 954-966 - 2002
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 saccharum
Marsh., Fagus grandifolia Ehrh., Betula alleghaniensis Britton, Abies balsamea
(L.) M...
A methodology for estimating canopy disturbance frequency and intensity in dense temperate forests
Canadian Journal of Forest Research - Tập 19 Số 5 - Trang 651-663 - 1989
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
early gr...
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