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Plant litter (also leaf litter, tree litter, soil litter, litterfall or duff) is dead plant material (such as leaves, bark, needles, twigs, and cladodes) that have fallen to the ground. This detritus or dead organic material and its constituent nutrients are added to the top layer of soil, commonly known as the litter layer or O horizon ("O ...
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The bark of Pinus thunbergii is made up of countless shiny layers. Bark is the outermost layer of stems and roots of woody plants. Plants with bark include trees, woody vines, and shrubs. Bark refers to all the tissues outside the vascular cambium and is a nontechnical term. [1] It overlays the wood and consists of the inner bark and the outer ...
Quercus lobata, commonly called the valley oak or roble, is the largest of the California oaks.It is endemic to the state, growing in interior valleys and foothills from Siskiyou to San Diego counties. [4]
Celtis laevigata, Southeastern Louisiana.. Celtis laevigata is a medium-sized tree native to North America.Common names include sugarberry, southern hackberry, or in the southern U.S. sugar hackberry or just hackberry.
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The smooth upper bark of the half-barks and that of the completely smooth-barked trees and mallees can produce remarkable colour and interest, for example E. deglupta. [11] E. globulus bark cells are able to photosynthesize in the absence of foliage, conferring an "increased capacity to re-fix internal CO 2 following partial defoliation". [12]
The Sacramento River and its tributaries are a significant part of the geography of the Sacramento Valley. Rising in the various mountain ranges (the various Northern Coast Ranges to the west, the southern Siskiyou Mountains to the north, and the northern Sierra Nevada to the east) that define the shape of the valley, they provide water for agricultural, industrial, residential, and recreation ...