Plants - slow moving waters, Biology

Assignment Help:

Plants - Slow Moving Waters

Plant life is abundant in this habitat and includes rooted vascular plants such as pond weeds and grasses, firmly attached aquatic mosses and multicellular filamentous algae. Minute floating plants such as duck weeds may cover most of the surface of the slow moving streams especially in the slowest backwaters. Motile algae, such as diatoms and flagaellates may abound in the open water.

As plants are more in this habitat the productivity is comparatively higher hi than that of the rapid waters and so the community here is relatively less dependent on nutrients from outside.

While in the fast-water streams the main controlling factor is the current, in the slow-water streams the main limiting factor is the concentration of dissolved oxygen. In this ecosystem a large quantity of oxygen can be withdrawn by the high level of animal activity coupled with active detritus food chain. In addition, the low level of turbulence means that less oxygen is incorporated into the water at the surface. Thus, the concentration of dissolved oxygen in a slow moving stream can be substantially less than saturation and so the community must be much more tolerant of low oxygen conditions as a result. For example the salmon and trout occurring in fast water need high oxygen levels while the most common fishes of slow water are often low oxygen concentration tolerant species such as carp and catfish.


Related Discussions:- Plants - slow moving waters

Functions of synergids, Functions of Synergids Ultra structurally the ...

Functions of Synergids Ultra structurally the structure and concentration of cell organelles reveals that synergids are metabolically active. The following Wee functions are a

Prevention from infective endocarditis, Prevention of endocardial infection...

Prevention of endocardial infection by the use of antimicrobial agents, although desirable, is not always possible. By identifying the patients at  risk, the causative bacteria and

Poising capacity of food, As redox conditions change, there will be some re...

As redox conditions change, there will be some resistance to change in a food's redox potential. This is known as poising capacity of food. This capacity is dependent on the concen

Explain the properties of gum tragacanth, Explain the Properties of Gum tra...

Explain the Properties of Gum tragacanth Gum tragacanth swells in water to give thick  viscosity dispersions or pastes similar in texture to soft gels. The viscosity shows a sh

What is mucic acid test and its principle, What is Mucic Acid Test and its ...

What is Mucic Acid Test and its principle? This is a specific test for galactose and is given by galactose as well as lactose, which is made up of galactose and glucose. Pr

Oxygen cycle, Oxygen is a major component of all living organisms. All the ...

Oxygen is a major component of all living organisms. All the organisms and plants required oxygen for aerobic respiration which they absorb from environment. Only plants release ox

Explain about the niacin (nicotinic acid) deficiency, Explain about the Nia...

Explain about the Niacin (nicotinic acid) deficiency? Niacin (nicotinic acid) deficiency classically results in pellagva, which is a chronic wasting disease associated with a c

What is an example of intraspecific competition, Q. What is an example of i...

Q. What is an example of intraspecific competition? The Intraspecific competition occurs in practically all species, for instance, the competition of humans for a job.

Weaning the infant from the incubator, Weaning the Infant from the Incuba...

Weaning the Infant from the Incubator When heater output reading is minimal or nil it suggest that infant is capable of generating enough metabolic heat to keep himself war

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