Woodland stage - hydrarch, Biology

Woodland Stage - Hydrarch

When the lowland has been built up to an extent where the soil is saturated perhaps only in spring and early summer, certain species of shrubs and trees may appear. Those that can tolerate waterlogged soil around their roots will be - the pioneers. Various species of Salix, Cornus, Cephalanthus, Alnus and Populus may form dense thickets.

Some shade-tolerant herbs may also grow among the trees and shrubs. These woody plants react upon the habitat by producing shade and by lowering the water table both by further building up the soil and by vigorous transpiration. By this time of succession there is much accumulation of humus wit rich flora of microorganisms like bacteria, fungi and others. Thus mineralisation o the soil favours the arrival of new tree species in the area leading to climax stage.

Posted Date: 1/21/2013 12:07:25 AM | Location : United States







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

Write discussion on Woodland stage - hydrarch
Your posts are moderated
Related Questions
Ethylene - Dormancy Ripening of fruits involves a chain of cellular events like: Rise in the rate of respiration, Breakdown of higher carbohydrates into carboxylic

Explain the Prevalence of Iodine Deficiency Disorders? We can determine the prevalence of IDD by conducting population surveys. Most of the population surveys are based on clin

Calculate Temperature for Survival and Growth of Microorganisms? Survival and growth of microorganisms is also affected by the temperature. According to their temperature requi

Indications for Surgery :  Patients with moderate or severe tricuspid regurgitation that is functional will need tricuspid annuloplasty at the time of correction of mitral valve d

Biology : Biology may be defined the study of living organisms. It mainly deals with the characteristics of living organisms and their classification. It is also concerned with the

What kind of eye defect can give rise to short-sightedness? Long eyeballs, large eyeballs, too powerful a lens or a combination of these defects can give increase to short-sigh

Q. Which is the first (human) heart chamber into which blood enters? Where does the blood go after passing that chamber? What is the name of the valve that separates the compartmen

Psychology : This is the study of human mind. On other words Psychology is the science of behavior or mental processes. Its immediate aim is to understand the individuals or groups

Unstable Angina :  It is indicative of important reversible myocardial ischaernia that needs urgent evaluation and treatment. Medical management usually relieves symptoms and if t

P ARTURITIO N - Gestation period is of 280 days (in rabbit 28 days). Parturition is the expelling of fully mature young ones from the mother's uterus. Oxytocin stimulates