Biology
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- What Is Biology?
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- #65 Ecology
Ecology is the study of the ways in which organisms interact with their environment. Levels of ecological organisation A habitat is a type of environment in which an organism lives. For example, the habitat of a giraffe is grassland (savannah) with...
- #64.1 Ecology Syllabus 2015
? Levels of ecological organisation ? Energy flow through ecosystems ? Recycling of nitrogen Learning Outcomes Candidates should be able to: (a) define the terms habitat, niche, population, community and ecosystem and be able to recognise examples...
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Biology
ecosystem
Term: ecosystem
Origin: Anc Greek
?????/ecos(=house) ?????>??????/soicos>?????/sacos(=protection)
???????/systema(=union) > ?????????/synistimy(=to unite, to compine)
Coined:
in 1930 by British botanist Roy Clapham (1904 - 1990) in order to describe the combined physical and biological components of an environment. Five years later (1935) the term was refined by British ecologist Arthur Tansley (1871 ? 1955) who refered to ecosystem as: "The whole system, ? including not only the organism-complex, but also the whole complex of physical factors forming what we call the environment. The modern definition of the term is due to American ecologist "Eugene Pleasants Odum (1913-2002), who defined ecosystems as: "Any unit that includes all of the organisms (ie: the "community") in a given area interacting with the physical environment so that a flow of energy leads to clearly defined trophic structure, biotic diversity, and material cycles (ie: exchange of materials between living and nonliving parts) within the system is an ecosystem
Definition:
An ecosystem is environment consisting of all the organisms and the abiotic environment within which the organisms live
Sources
- Odum, E. P. 1971. Fundamentals of Ecology. Third edition. W. B. Saunders,
Philadelphia - ."Tansley, AG "The use and abuse of vegetational terms and concepts". Ecology 16 (3): 284?307, (1935).
- Ecology Revision
Ecology The following are some points to help you, it does not contain everything! You must revise on your own making summary notes and diagrams to help you. You have your notes, this web and your text book to help you. Please use all of these resources,...
- What Is Biology?
What is Biology? the science of life or living matter in all its forms and phenomena, especially with reference to origin, growth, reproduction, structure, and behavior. http://dictionary.reference.com/browse/biology Biology is a natural science which...
- #65 Ecology
Ecology is the study of the ways in which organisms interact with their environment. Levels of ecological organisation A habitat is a type of environment in which an organism lives. For example, the habitat of a giraffe is grassland (savannah) with...
- #64.1 Ecology Syllabus 2015
? Levels of ecological organisation ? Energy flow through ecosystems ? Recycling of nitrogen Learning Outcomes Candidates should be able to: (a) define the terms habitat, niche, population, community and ecosystem and be able to recognise examples...
- Deep Ecology
Deep Ecology Platform Deep ecology provides a fairly radical framework to analyze the relative position of humans on the planet. Basically, deep ecology requires that we view ourselves as just another species, not more important or less. It requires a...