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Related to overstory: understory


1. The highest layer of vegetation in a forest, usually forming the canopy.
2. The trees in a forest whose crowns constitute this layer.


(ˈoʊ vərˌstɔr i, -ˌstoʊr i)

n., pl. -ries.
the forest canopy.
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References in periodicals archive ?
These two species of small mammals were collected from a forested bottomland habitat dominated by an overstory of oaks (Quercus) and a dense midstory of Chinese privet (Ligustrum sinense).
These findings differ from some other similar gap studies, and the contrasts may be due to the advanced age and particular species composition of this forest, the poor soil drainage conditions, and the large size and stressed condition of the overstory trees.
Many of the species listed in Table 1 may have been adversely affected by the removal of original forest and native overstory trees at mid-altitudes (300 to 1,500 meters) as coffee has expanded and intensified in the Neotropics.
Since none of the species along Dry Lake Creek are particularly fire resistant, I assumed a moderately intense fire-caused mortality in 90% of the overstory [greater than]38 cm diameter at breast height (dbh), 95% of the overstory between 10 and 38 cm dbh, and 99.
On days like this, a stand deep in the woods beneath heavy overstory may become a liability, because it will get too dark to shoot well before the end of legal shooting hours.
Overstory shade was important at all stages of seedling development investigated: the provision of artificial or natural shade increased rates of seedling emergence and subsequent survival as much as 19-fold and increased recruitment rates between 30and 60-fold.
Hunters who want to try their luck on this beautiful, clown-faced desert quail should key in on grasslands adjacent to slopes with about a 30 percent oak overstory at elevations from 4,000 to 6,000 feet.
there is also some larger df (6" 10" dbh) overstory scattered throughout the stand.
Prevalence index scores of the overstory and shrub layers did not exhibit significant levels of linear association with BHR or mean groundwater depth.
001) overstory cover than did feeding sites, whereas feeding sites had greater shrub (P < 0.
The amount of 'danger tree' removal would result in a loss of most of the overstory canopy within and adjacent to the corridor.
The swamp had an overstory of red maple (Acer ruburm) and silver maple (Acer saccharinum), with an understory of spicebush (Lindera benzoin), highbush blueberry (Vaccinium corymbosum), and common winterberry (Ilex verticillata).