Ecosystem as a unit of nature , Biology

Ecosystem as a Unit of Nature

An ecosystem can be visualised as a functional unit of nature representing complex interactions between living and non-living components. The study of any ecosystem involves systematic description of the components and understanding of the close relationship between the biotic and the abiotic components. Why consider ecosystem as a unit of study? This, perhaps, is the question arising in your mind presently. If one wishes to study the various aspects of relationships of living and non-Jiving components of the environment, it would be easy to understand and interpret these relationships in a smaller component of the biosphere that is the ecosystem. We shall elaborate this further with the help of an example. Let us consider a village ecosystem. It is depicted here by the area enclosed within the dotted lines. The boxes within the village ecosystem represent three sub-systems namely: producers or 'crop plants, cattle and humans. The solid lines connecting the boxes represent the interactions. Solar energy, fertilisers and pesticides are the major inputs brought from outside the village ecosystem. These inputs determine the quantum of output, that is, food grain, fodder and other animal products which are exported from the village. So, you see that, the village ecosystem could be considered as a model to study the organisms and their environment as an integrated unit.

1909_Ecosystem as a Unit of Nature.png

Figure: A model of village ecosystem

Ecosystems are conceptual models and these models can be applied at any scale, from a bowl of water to the whole earth. Ecosystems represent enormous contrast in size and complexity. For the purpose of study, an ecosystem can be delineated in almost any way convenient to the interest of the investigator. In the case of some ecosystems such as lake, river or pond, distinct boundaries can be recognised but in the case of other ecosystems, such as a grassland, forest, village or town, boundaries are not so sharp however, they can be delineated according to the object of study or any other practical consideration.

Posted Date: 1/19/2013 12:29:38 AM | Location : United States







Related Discussions:- Ecosystem as a unit of nature , Assignment Help, Ask Question on Ecosystem as a unit of nature , Get Answer, Expert's Help, Ecosystem as a unit of nature Discussions

Write discussion on Ecosystem as a unit of nature
Your posts are moderated
Related Questions
Explain the issues related to food production? Let us now understand some issues related to food production, these are: Factors influencing food production, Analysi

Prevention of flap tearing Tearing of a flap is a common complication of the inexperienced surgeon who attempts to perform a procedure using a flap that provides insufficient a

The human skeleton has evolved from that of four-legged animals. Unfortunately, the adaptation is far from perfect; thus, our upright posture causes problems like back age and the

Explain about Osseointegration Osseointegration is regarded as the process of direct bone apposition on implant surfaces where the bone in contact with the implant later underg

Explain Prophylaxis with antimicrobial Prophylaxis with antimicrobials has decreased the incidence of surgical site infection after head and neck operations that involve an inc

Long-term responses - Behaviour of Plants Plants alter their course of development to suit the prevailing environmental conditions. For example, leaf maturation and fall, onse

what is the excretory organ of agama lizard

Give examples of both aerobic and anaerobic exercises Games like foot ball and basket ball, involveĀ  both aerobic and anaerobic exercises. As you are aware, in modern times a n

Q. Discuss the colour coding rules for biomedical waste management and handling? Colour coding biomedical waste( management and handling) rules, 1998

Physiognomy and Pattern Physiognomy is the general appearance of vegetation as determined by the growth, form of dominant species. It may be considered a synthetic character