More info for the terms:
bog,
shrubBalsam fir grows on a wide variety of upland and lowland sites. It
occurs on mountain slopes and glaciated uplands as well as on alluvial
flats, peatlands, and swamps. It is found in pure, mixed coniferous,
and mixed coniferous-deciduous stands.
Soils: Balsam fir grows on sites underlain by a variety of parent
materials, including gneiss, schist, anorthosite, diabase, slate,
sandstone, and limestone. It grows mostly on acid Spodosol, Inceptisol,
and Histisol soil orders [
21]. It grows on all soil textures, from
heavy clay to rocky. It tolerates a wide range of soil acidity. In the
Lake States, balsam fir is most common on cool, wet-mesic sites with
soil pH values between 5.1 and 6.0 [
21]. In northeast Wisconsin it
commonly grows on limestone outcrops [
45].
Associated trees: Associated trees of uplands include white spruce, red
spruce, paper birch, aspen, white ash (Fraxinus americana), yellow birch
(Betula alleghaniensis), American beech (Fagus grandifolia), red maple,
sugar maple (Acer saccharum), eastern hemlock, and white pine. Lowland
associates are black spruce, white spruce, tamarack (Larix laricina),
red maple, black ash (Fraxinus nigra), and northern white-cedar [
17].
Understory: Common shrub associates include beaked hazel (Corylus
cornuta), bog Labrador-tea (Ledum groenlandicum), mountain maple (Acer
spicatum), Canada yew (Taxus canadensis), red raspberry (Rubus idaeus),
sheep laurel (Kalmia angustifolia), and hobblebush (Viburnum
lantanoides) [
21].
Elevation: Balsam fir grows from near sea level along the Atlantic
seaboard to timberline at 5,600 feet (1,700 m) in the Appalachian
Mountains, and to 6,200 feet (1,890 m) in the White Mountains in New
Hampshire [
21].