What are the importance of allochotonous in lotic system?

1. Why is light important to Lotic systems?
2. What are the two most important factors in Lotic situations?
3. What is allochthonous organic matter?
4. What is allochthonous production?
5. How does light affect the freshwater ecosystem?
6. What are Lotic systems?
7. What is the difference between Lentic and Lotic systems?
8. What are the features of Lotic ecosystem?
9. Why are rivers important to us?
10. What is allochthonous matter?
11. What is allochthonous and autochthonous?
12. What is the meaning of allochthonous?
13. What is allochthonous input?
14. How does allochthonous lead to eutrophication?
15. What is autochthonous production?

Why is light important to Lotic systems?

Light is important to lotic systems, because it provides the energy necessary to drive primary production via photosynthesis, and can also provide refuge for prey species in shadows it casts. ... Larger river systems tend to be wide so the influence of external variables is minimized, and the sun reaches the surface.

What are the two most important factors in Lotic situations?

Lotic ecosystems have two main zones, rapids and pools. Rapids are the areas where the water is fast enough to keep the bottom clear of materials, while pools are deeper areas of water where the currents are slower and silt builds up.

What is allochthonous organic matter?

Allochthonous dissolved organic matter is a source of organic carbon, nitrogen, phosphorus, and sulfur to aquatic systems that is derived from the surrounding terrestrial ecosystem. ... Organic forms of carbon, nitrogen, sulfur, and phosphorus contribute to bulk DOM.

What is allochthonous production?

There are two main sources of fixed energy that drive stream food webs: Organic carbon produced by photosynthesis outside the stream, or allochthonous production. Organic carbon produced by photosynthesis within the stream, or autochthonous production.

How does light affect the freshwater ecosystem?

It is a major driver of energy and material flow through aquatic ecosystems, it can also be a limiting or co-limiting resource as well as a basis for competition. For example, light introduces heat in the upper water layer, drives primary production, and degrades substances.

What are Lotic systems?

A lotic system includes all flowing inland bodies such as creeks, rivers, streams, and so on. The ecology of flowing water is unique in many ways and is often shaped by the nature and behavior of the flowing water. A river, for example, is a flowing water body, usually unidirectional, with a source and an end.

What is the difference between Lentic and Lotic systems?

The term lentic (from the Latin lentus, meaning slow or motionless), refers to standing waters such as lakes and ponds (lacustrine), or swamps and marshes (paludal), while lotic (from the Latin lotus, meaning washing), refers to running water (fluvial or fluviatile) habitats such as rivers and streams.

What are the features of Lotic ecosystem?

Lotic ecosystems are characterized by flowing waters. Examples include rivers, streams, brooks and springs. Here, the oxygen level is higher due to the continually moving waters of the current and the water is clearer. The flow of the water is different depending on the area of a river or stream.

Why are rivers important to us?

Rivers are important for the country's economy because water from the rivers is a basic natural resource essential for various human activities. ... The rivers provide water for irrigation. 2. They provide fertility to the soil.

What is allochthonous matter?

Allochthonous refers to material that has been imported into an ecosystem. While an ecosystem involves both organic (plants, bacteria, animals) and inorganic things (rocks, soil, water), the allochthonous material that enters an ecosystem refers to organic matter and its nutrients, such as nitrogen and phosphorous.

What is allochthonous and autochthonous?

Allochthonous refers to sediments that are found remote from the place of origin, while autochthonous refers to the sediments that are found in the same location where they have formed.

What is the meaning of allochthonous?

Definition of allochthonous

1a : of or relating to the rocks of an allochthon. b of coal : formed elsewhere than in situ and hence not autochthonous. c of limestone : composed largely of organic debris moved far from the place where the base organisms lived.

What is allochthonous input?

Stream ecosystems receive energy from two sources: allochthonous inputs, which consist of terrestrially derived carbon (C) that is produced within the catchment and imported into the stream channel (e.g., Kaushik & Hynes, 1971), and autochthonous production, which includes C fixed within the stream channel by algae and ...

How does allochthonous lead to eutrophication?

The main sources of organic matter in the studied area were allochthonous, which resulted in an increase in the concentration of dissolved inorganic nutrients and an increase of autochthonous production, thus accelerating local eutrophication processes.

What is autochthonous production?

All biotic communities depend on a supply of energy for their activities. In most terrestrial systems this is contributed in situ by the photosynthesis of green plants - this is autochthonous production. ... Shading from the trees prevents any significant growth of planktonic or attached algae or aquatic higher plants.