Xerarch - ecology, Biology

Assignment Help:

Xerarch - Ecology

Successions initiated on bare rock, wind-blown sand, rocky talus slopes, or other situations where there is an extreme deficiency of water are termed xerarch. Here, we shall discuss the example of a bare rock. It is not only deficient in water but also lacks any organic matter, having only minerals in disintegrated, unweathered state.

The pioneers to colonise this primitive substratum are crustose type of lichens, and through a series of successive seral stages, the succession finally terminates into a forest which constitutes the climax community. As in the hydrarch, successive changes take place in both plants as well as animals, but changes in plants are more obvious than animals.


Related Discussions:- Xerarch - ecology

Flow cytometry, Flow cytometry is an analysis of biological material by de...

Flow cytometry is an analysis of biological material by detection of light- absorbing or fluorescing properties of cells or subcellular fractions (that is chromosomes) passing in

Explain the alkaline copper reduction method, Explain the Alkaline Copper R...

Explain the Alkaline Copper Reduction Method? Since alkaline copper reduction methods are by far the most commonly used methods for blood glucose estimation, let us look at the

Taxonomy, A In taxonomy, what is a "KEY" ? List the different types of key...

A In taxonomy, what is a "KEY" ? List the different types of keys. How are they prepared and what are they used for ?sk question #Minimum 100 words accepted#

Explain about the saponins, Explain about the Saponins? These are a div...

Explain about the Saponins? These are a diverse group of compounds commonly found in legumes like soybean, lentils, chickpeas, peanuts and alfalfa sprouts. They are also presen

Pulse, PULSE Pulse frequency and heart rate are identical i.e. 72. ...

PULSE Pulse frequency and heart rate are identical i.e. 72. It can be felt in superficial arteries as in wrist (radial artery [thumb] and ulner artery of brachial art.),

Which are the glands present in the epidermis of mammals, Which are the gla...

Which are the glands present in the epidermis of mammals, birds and reptiles? In the epidermis of birds and reptiles there are almost no glands. In mammals there are sweat glan

Admission of mentally patient, Admission of Mentally Patient: Volunt...

Admission of Mentally Patient: Voluntary Basis  (Voluntary Admission)   Any adult person who considers himself  to be mentally ill, can  request  the Medical Officer for

Define energy needs during pregnancy period, Define Energy needs during pre...

Define Energy needs during pregnancy Period? Two factors determine energy requirements: increase in mother's basal metabolism to support the work required for foetal growth and

Define how to prevent the cancer, Define How to Prevent the Cancer? A c...

Define How to Prevent the Cancer? A continuing and urgent need is there to take all steps to prevent cancer. Cancer rates are set to increase another 50 percent by the year 202

Animal population, what are the characteristics of animal population

what are the characteristics of animal population

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd