Shrub stage - xerarch, Biology

Shrub Stage - Xerarch

Sufficient soil is formed in the herbs stage, for supporting the woody plants or the shrubs. They migrate with the help of seeds or rhizomes from the adjacent areas. Examples are: species of Rhus and Physocarpus. The shrubs soon develop into dense vegetation. The habitat is considerably modified. The herbs are shaded by the overgrowing shrubs. They no longer find it possible to thrive in such a situation and are, therefore, completely replaced by the shrubs.

The shrubby vegetation adds a lot of organic matter to the soil, through leaves and other plant parts. The soil is thus enriched with considerable amount of humus. The huge mass of roots of the shrubs corrodes the rocks. The enriched soil attains greater capacity for holding water. The soil is shaded, and, therefore, evaporation of water is considerably reduced. The humidity is increased over such areas. All these favour the growth of seedlings of trees which start invading the area.

Posted Date: 1/21/2013 12:23:07 AM | Location : United States







Related Discussions:- Shrub stage - xerarch, Assignment Help, Ask Question on Shrub stage - xerarch, Get Answer, Expert's Help, Shrub stage - xerarch Discussions

Write discussion on Shrub stage - xerarch
Your posts are moderated
Related Questions
How are glycosidic bonds formed? The anomeric hydroxyl group and a hydroxyl group of another sugar or some other compound can join together, splitting out water to form a glyco

Q. Which is the brain region responsible for the regulation of breathing and blood pressure? The neural regulation of breathing, blood pressure and other physiological paramete

Explain about the Light sense You  must be  aware that when you  enter  into a cinema hall, you  are unable  to  see  and  find  out your  seat  initially for  a few minutes; b

Osmotic and Ionic Regulation The  ammonotelism, ureotelism and uricotelism are the adaptations of the animals for the removal of toxic nitrogenous wastes and thereby maintain

Explain about Atrial Septal Defect (ASD) ? ASD occurs as an isolated anomaly in 5- 10 per cent of all CHDs. These communications occur in four sites i.e. in the central portion

Dormancy - Plant Growth Substances Dormancy can be defined as a state of suspended growth and metabolism. When most plants are exposed to seasonal periods of very inclement we

Q. Rate Related Bundle Branch Block? The term has often implied the absence of significant coronary or myocardial pathology. It cannot be judged without taking the total clinic

State about the lengthy administration of test battery The lengthy administration of test battery may be unsuitable for some individuals (such as demented or psychiatric patien

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What happens when auxin concentration in some structures of the plant is over the action range of the hormone? In some of parts of the plant (roots, stem, lateral buds) there a