What happens when you eat tree bark

Why do trees actually have bark?


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Why do trees actually have bark?

Trees have the bark on the very outside of the trunk, so to speak as the outermost layer. Selina from Ludwigsfelde wants to know why the trees need the bark.

The bark is the outermost layer of the trunk. It is built from the outside in as follows:

Inside the heartwood, which is the oldest. Then, laid out in annual rings, the spinwood. Finally comes the cambium. This is the layer that constantly produces new fabric, wood on the inside and bast on the outside. The sugar sap flows from the leaves to all other parts of the tree through the layer of bast, which lies directly under the bark.

Then comes the bark, which constantly grows back. It is a very important protective layer for the tree. It protects against drying out, against fungal attack and against "voracious" insects. The outer bark that has died is called a bark. This is the layer we see when we stand in front of a tree. It contains cork and is permeated by fine air channels.

If the bark of a tree is "injured", the tree can also get sick more easily.

Since there is too much game population in many forests, problems arise with game and there is so-called game damage, such as browsing: game eats buds and shoots, so that especially young deciduous trees are prevented from growing or are completely eaten away. Or the game peels off the bark of trees by biting it off. This happens especially in winter when the red deer doesn't find enough to eat. Trees whose bark has been severely peeled must be felled.

Wild animals such as deer resort to bark mainly in the absence of other food. Various birds look for insect larvae under the bark. The moose also only eat the bark of trees when they can no longer find small branches and leaves after a long winter. Beavers also eat tree bark in winter, preferably willows and poplars. Small rodents such as sleeping mice or dormice also eat bark.

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