Sedge-meadow stage - hydrarch, Biology

Assignment Help:

Sedge-Meadow Stage - Hydrarch

Favoured by an increasing amount of light, as the former occupants disappear, they gradually change the reed swamp into a sedge meadow. And now species of Cyperaceae and Gramineae such as Carex, Juncus, Cyperus and Eleocharis colonise the area. They form mat-like vegetation with the help of their much branched rhizomatous systems. All these react upon the habitat by binding water-carried and wind-borne soil, accumulating plant debris and transpiring enormous quantities of water.

There is much rapid loss of water, and sooner or later the mud is exposed to air. As a result nutrients like ammonia, sulphides become oxidised to nitrates and sulphates. Thus the conditions in the area gradually change from marshy to mesic, and the marshy vegetation shows a decline. Upto the end of sedge-meadow stage, the climate of the region has no control over the succession because the water content of soil is high, irrespective of rainfall and climate of the region. At the end of this stage, the soil becomes dry and its water content will henceforth be dependent upon rainfall and climate of the region. The plants which succeed the sedge-meadow stage are therefore controlled by the climate to a very large extent. In dry climates the next stage may be grassland or some other xeric climax but in more moist climates it is woodland.


Related Discussions:- Sedge-meadow stage - hydrarch

Bacteria and archaea been placed in a seperate domain, Why have bacteria an...

Why have bacteria and archaea been placed in a seperate domain?

What are the important organic molecules for living being, What are the mos...

What are the most important organic molecules for living beings? There are many kinds of organic molecules that are significant for the living beings. Especially vital are amin

Hazardous material - factors affecting occupational health, Hazardous Mater...

Hazardous Material - Factors Affecting Occupational Health Handling and storage of flammable and combustible liquids all the time pose threat to occupational safety. Fire and

Explain why this essential that muscle cells, Explain why it is essential t...

Explain why it is essential that muscle cells, during anaerobic respiration, convert pyruvic acid (pyruvate) into lactic acid, even though the conversion results in an accumulation

Skin, Two adaptation of the skin against attack by micro-organisms

Two adaptation of the skin against attack by micro-organisms

What are the types of muscle tissues, What are the types of muscle tissues?...

What are the types of muscle tissues? What are the morphological features that differentiate those types? There are three kinds of muscle tissue: the skeletal striated muscle t

Standard titration - estimation of vitamin c in a solution, Define Standard...

Define Standard Titration - Estimation of Vitamin C in A Solution ? Pipet 5 ml of standard ascorbic acid solution into a 100 ml conical flask. Fill the burette with the dye solu

List the goals of management of type 1 diabetes mellitus, Q. List the goals...

Q. List the goals of management of Type 1 Diabetes Mellitus? Goals of management of Type 1 Diabetes Mellitus: a) to keep blood sugar level as close to normal as possible.

Post-mating isolating mechanisms, The second category of isolating mechanis...

The second category of isolating mechanism that may permit interspecific mating but ensures reduced viability is called post-mating isolating mechanism. This category could be subd

What is expression of the dominant phenotype, If we make a cross of two phe...

If we make a cross of two phenotypically WT zebrafish, and we get the following results, what can we say about the genotype of those two WT looking parents from the following resul

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