Perkins, "Evaluation of a portable chlorophyll meter to estimate chlorophyll and nitrogen contents in sugar maple (Acer saccharum
Marsh.) leaves," Forest Ecology and Management, vol.
The understory is deeply shaded in the summer by a mostly closed canopy of large Acer saccharum
(sugar maple) trees, with less abundant canopy species including Fraxinus americana L.
and Acer saccharum
. It is also clear from Figure 8 that mollisols have high Axis 2 values and alfisols have low values.
The area varied in elevation from 200 to 230m and was dominated by mature sugar maple (Acer saccharum
), with yellow birch (Betula alleghaniensis), red maple (Acer rubrum), eastern hemlock (Tsuga canadensis), and white spruce (Picea glauca) occurring at a lower density.
Understory trees and and shrubs associated with quercus alba L., Acer saccharum
Marsh, and Liriodendron tulipifera L.
* Fall Fiesta Sugar Maple--(Acer saccharum
`Bailsta') has beautiful thick and leathery, glossy green leaves.
To determine the importance of microorganisms in regulating the retention of anthropogenic [[NO.sub.3].sup.-], we followed the belowground fate and flow of [[blank].sup.15][[NO.sub.3].sup.-] in a mature northern hardwood forest, dominated by Acer saccharum
Because Acer saccharum
trees are abundant only in stand 5, and Acer pensylvanicum shrubs are short and not close to traps, most seeds on the remaining four plots were probably Acer rubrum.
Grafts are sometimes successful between different species within the same genus so paperbark maple (Acer griseum) can be grafted onto sugar maple (Acer saccharum
The presence of Acer saccharum
at the MS site supports this explanation as this species has a known positive relationship with low acidity soils (Horsley et al., 2008; Long et al., 2009).
PRINCIPALLY, AND ACER NIGRUM OF THE FAMILY ACERACEAE
Diameter classes (cm) Species 10-19 20-29 30-39 40-49 50+ Quercus alba -- 14.0 40.0 48.0 16.0 Carya ovata 12.0 14.0 2.0 2.0 -- Acer saccharum
2.0 -- 2.0 12.0 2.0 Fraxinus lanceolata -- 4.0 6.0 2.0 4.0 Quercus rubra -- -- 2.0 4.0 6.0 Carya glabra 14.0 6.0 4.0 -- -- Carya cordiformis -- 2.0 2.0 2.0 -- Prunus serotina -- -- -- 2.0 -- Carya tomentosa 2.0 2.0 -- -- -- Ostrya virginiana 2.0 -- -- -- -- Total 32.0 42.0 58.0 72.0 28.0 Total Basal area Rel.
In many Illinois forests, Acer saccharum
(sugar maple) has increased in importance in the oak-hickory forests and savannas (Curtis 1959, Abrams 1992, 2005).
Its cover consisted primarily of Acer saccharum
(34%) and Fagus grandifolia (11.6%) in the overstory, and Lindera benzoin (14%) and Acer saccharum
(13.1%) in the understory.
Hard (Sugar) maple Heartwood light reddish brown, sometimes darker Alnus rubra Red alder Almost white to pinkish brown.