Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
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.
define?
Explain about the Cancer and Infertility - Obesity? Cancer: Risk of cancers of the colon, rectum and prostrate increases greatly in obese men while obese women are more likely
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Q. How does the universality of the genetic code make the recombinant DNA technology possible? The universality of the genetic code refers to the fact that all living beings ha
Q. Which arthropod class is the mainly diversified animal group of the planet? How can this evolutionary success be explained? The insects are the animal group with most divers
The rRNA transcription units in E. coli hold some tRNA genes which are processed and transcribed at the time of rRNA transcription. The other tRNA genes happen in clusters of
How do respiratory pigments act? Respiratory pigments are oxygen-carrying molecules present in the blood. When the oxygen concentration is high, for instance, in the pulmonary
Q. For each of the three kinds of life cycles what is the respective ploidy of the individual that represents the adult or lasting form? In the haplontic haplobiontic life cycl
Cognitive - Behavioural Approaches They includepsychoeducatiorzal and rational-emotive therapy. The goal is to identify problem behaviour and irrational beliefs and then to de
What are sieve tubes suited for translocation of food? a.bordered pits b.no end walls c.bordered lumen and perforated cross walls D.no protoplasm
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd