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Quercus baloot, the holm oak or holly oak is a rare species of oak that was described by Griffith in 1848. It is classified in subgenus Cerris and section Ilex . [ 2 ] It is native to the Himalayas from 1,000–3,000 metres (3,300–9,800 ft).
Quercus ilex, the holm oak, [2] [3] also (ambiguously, as many oaks are evergreen) evergreen oak, [4] is a large evergreen oak native to the Mediterranean region. It is a member of the section Ilex of the genus, [ 5 ] [ 6 ] with acorns that mature in a single summer.
Quercus rotundifolia, the holm oak or ballota oak, [4] is an evergreen oak native to the western Mediterranean region, with the majority of the population in the Iberian Peninsula and minor populations in Northwest Africa. The species was first described by Jean-Baptiste Lamarck in 1785.
The populations of two tree species (European Beech, Fagus sylvatica; and Holm Oak, Quercus ilex) were evaluated in their dynamics over elevations through time. Generally, Holm Oak reside lower on mountain slopes than does European Beech. In the past fifty years an increase in temperature of 1.5 °C was seen in the tested mountain range.
The mean annual increment (MAI) or mean annual growth refers to the average growth per year a tree or stand of trees has exhibited/experienced up to a specified age. For example, a 20-year-old tree that has a stem volume of 0.2 m 3 has an MAI of 0.01 m 3 /year.
Holm oak may refer to: Quercus ilex , tree native to South and Southeast Europe and parts of France Quercus rotundifolia , tree native to the Iberian Peninsula and Northwest Africa
In this year’s World Happiness Report, the U.S. fell from No. 15 to No. 23 on the list. This is the first time the U.S. has not been one of the top 20 happiest places in the report’s history.
Map of wood-filled areas in the United States, circa 2000 [1]. In the United States, the forest cover by state and territory is estimated from tree-attributes using the basic statistics reported by the Forest Inventory and Analysis (FIA) program of the Forest Service. [2]