Natural and artificial ecosystem, Biology

Natural and Artificial Ecosystem

i) Natural ecosystems are those which are mostly free from human disturbances, such as tropical forests, grasslands, oceans, lakes and deserts.

ii) Artificial or man-modified ecosystems are formed as a result of human modification of the natural ecosystems. For example, man has transformed natural forests and grasslands into crop fields. An extreme example of an artificial ecosystem is a city. Increasing human interference has destroyed many natural ecosystems and replaced them with artificial ecosystems,'such as crop fields, urban centres and industrial estates.

All ecosystems are fully integrated with the neighbouring ecosystems and communicate with each other in varying degrees through the import and export of both energy and nutrients. An ecosystem is a dynamic system characterised by energy flow and nutrients cycling. Substances constantly flow through it, and there are sufftcient supplies of energy within the ecosystem to allow for this flow to take place. See Figure as shown below. Ecosystems also possess considerable self-regulating ability, called homeostasis. due to which they tend to recover from minor perturbations.

1376_natutal & artificial eco.jpg

Posted Date: 12/10/2012 5:23:14 AM | Location : United States







Related Discussions:- Natural and artificial ecosystem, Assignment Help, Ask Question on Natural and artificial ecosystem, Get Answer, Expert's Help, Natural and artificial ecosystem Discussions

Write discussion on Natural and artificial ecosystem
Your posts are moderated
Related Questions
ADRENAL OR SUPRARENAL GLANDS (GLANDS OF EMERGENCY) - These are paired structures located on the top of the kidneys. Each adrenal gland has two parts external adrenal cort

Q What are the biological troubles that molluscs face due to their soft body? Because molluscs have a soft body they are further fragile. They also have more complexity to supp

Q. Concerning the maintenance of body temperature how do beings of the class Reptilia classify? Like amphibians and fishes, beings of the class Reptilia are heterothermic anima

Explain about the Osteomalacia - Deficiency of Vitamin D? It occurs when there is a lack of vitamin D and calcium, in women who have had many pregnancies, who subsist on a meag

Define Nutritional Management of Neurological Disorders Your friend's aged father, over a period of time has become very confused, forgetful and is unable to do many things he

Which one of the following statements about human sperm is correct? 1. Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilis

Oxygen Dissociation Curves The oxygen content of blood fully saturated or oxygenated can be calculated. It is known as the oxygen capacity of blood and this varies for differe

Q. Explain Consciousness as inner state? Consciousness as inner state: We are conscious of thoughts, images, emotions and memories within ourselves though they may not have phy

What is the difference between bryophytes and tracheophytes? Bryophytes are nonvascular plants (mosses, hornworts, liverworts), i.e., they do not have a conductive system for t

Q Why is it said that during photosynthesis carbon dioxide is improved to form glucose? During photosynthesis carbon dioxide is energetically improve with hydrogen from water.