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The cause of cavitation and non-reversible embolism is not fully understood. In primary transmission, when the beetle feeds on a susceptible host pine, the pine wilt nematode enters the tree and feeds on the epithelial cells which line the resin ducts. This is referred to as the phytophagous phase of the nematode, and it results in pine wilt ...
This helps explain why the pine rocklands are home to a wide variety of plants and animals, many of which are endemic to Florida, south Florida, or the pine rockland itself. [5] It is characterized by an open canopy of South Florida slash pine ( Pinus elliotti var. densa ), a patchy subcanopy of palms and shrubs, and an extremely diverse ...
Sediment is a solid material that is transported to a new location where it is deposited. [1] It occurs naturally and, through the processes of weathering and erosion, is broken down and subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles.
The Piney Woods is a temperate coniferous forest terrestrial ecoregion in the Southern United States covering 54,400 square miles (141,000 km 2) of East Texas, southern Arkansas, western Louisiana, and southeastern Oklahoma.
Spruce is useful as a building wood, commonly referred to by several different names including North American timber, SPF (spruce, pine, fir) and whitewood (the collective name for spruce wood). [47] It is commonly used in Canadian Lumber Standard graded wood. [ 48 ]
A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female cone on a Norway spruce (Picea abies) Immature male cones of Swiss pine (Pinus cembra) A conifer cone, or in formal botanical usage a strobilus, pl.: strobili, is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads.
Pinus cembroides, also known as pinyon pine, [6] Mexican pinyon, [6] Mexican nut pine, [6] and Mexican stone pine, [6] is a pine in the pinyon pine group. It is a small pine growing to about 20 m (66 ft) with a trunk diameter of up to 50 cm (20 in).
As of 2011, only 3 million acres (12,000 km 2) or so of the longleaf pine ecosystem are left in North America. This significant drop in the ecosystem acreage marks a 97 percent decrease. In overlook of the ecosystem, today, it is described as being patchy and uneven in the distribution across the landscape.