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

Classification of environmental disasters, The Environmental Disasters Are ...

The Environmental Disasters Are Classified Into Two Major Categories: 1.      Natural Disasters like Earthquakes, Tsunami, Landslides, Cyclones, Floods, and Droughts Etc. 2.

Isolation of dna fragments, Isolation of dna fragments bound strongly with ...

Isolation of dna fragments bound strongly with protein 1.     Through pcr Pcr permits isolation of dna fragments from genomic dna through selective amplification of a spe

Pbpk modeling during human drug development, Early human studies are normal...

Early human studies are normally conducted in healthy subjects to assess acute safety and, if applicable, to monitor biochemical and pharmacological responses. These studies also p

Excretory system, what is the excretory organ of agama lizard

what is the excretory organ of agama lizard

How is genetic engineering used to create bacteria, How is genetic engineer...

How is genetic engineering used to create bacteria capable of producing human insulin? In a production of human insulin by bacteria the human insulin gene is incorporated into

Methods of evaluation, METHODS OF EVALUATION: The two main areas of ev...

METHODS OF EVALUATION: The two main areas of evaluation include a) evaluation of  job performance of individual b) evaluation  of programme  agency  1)  Evaluation of  the

Form of protozoan reproduction, Q. Which is the form of protozoan reproduct...

Q. Which is the form of protozoan reproduction that generates more variability? Sexual reproduction always generates extra genetic variability than asexual reproduction. That i

Explain about precautionary principle, Q. Explain about precautionary princ...

Q. Explain about precautionary principle? The ethical values of biodiversity highlights the intrinsic value of biodiversity for its own sake and it is independent of the varied

Protein prediction., I am trying to get help on the creation of a dataset f...

I am trying to get help on the creation of a dataset for protein prediction in matlab

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