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Posted on 2:23 PM by Wanto and filed under
By James Morris
The quantity of seeds in a good year is enormous. One hectare of forest planted with five to fifteen thousand young seedlings will yield up to three million seeds for a pine stand, five million for spruce, three to five million for beech and up to a hundred million for birch.
Simultaneously, however, there are great losses both of the seeds and the young plants. Large quantities of seeds are eaten by birds and animals and many fall in places unsuitable for growth where they either do not germinate at all or die shortly after germinating, having used up the store of food in the seed. Similarly, many young trees are destroyed in their first years by drought, frost, invading grass or other plants, or by animals that feed on them. Of the huge crop of seeds, all that usually remains within a few years is less than one per cent per hectare.
Fruits that fall on the shore are carried to the sea by the needing tide, then borne great distances by the currents to be thrown up again by the incoming tide on the shores of other Itihinds and continents.
A closer look at the type of seed, its method of dispersal, and t be biological characteristics of a given tree, will reveal that all are closely linked with an efficiency found over and over again in nature.
True fruits are further divided into dry and fleshy fruits.
Naturally, it would drop to the ground while being carried; and thus the offipring of a given tree might take root several hundred kilometres from the parent. In this way even these trees migrated hundreds of kilometres to the north within Itirly short space of time.
Simultaneously, however, there are great losses both of the seeds and the young plants. Large quantities of seeds are eaten by birds and animals and many fall in places unsuitable for growth where they either do not germinate at all or die shortly after germinating, having used up the store of food in the seed. Similarly, many young trees are destroyed in their first years by drought, frost, invading grass or other plants, or by animals that feed on them. Of the huge crop of seeds, all that usually remains within a few years is less than one per cent per hectare.
Fruits that fall on the shore are carried to the sea by the needing tide, then borne great distances by the currents to be thrown up again by the incoming tide on the shores of other Itihinds and continents.
A closer look at the type of seed, its method of dispersal, and t be biological characteristics of a given tree, will reveal that all are closely linked with an efficiency found over and over again in nature.
True fruits are further divided into dry and fleshy fruits.
Naturally, it would drop to the ground while being carried; and thus the offipring of a given tree might take root several hundred kilometres from the parent. In this way even these trees migrated hundreds of kilometres to the north within Itirly short space of time.
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Garden planning design should be fairly detailed and specific and include an indication of the type of planting envisaged in the different garden beds.
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