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The Ideas and Applications of H. From Wikipedia, the free encyclopedia.
In writing a history of the ecosystem concept, Golley noted that Odum tended to think in the form of analogies, and gave the example, “if the world is a heat engine, then He claimed that energy was driven through ecological systems by an “ecoforce” analogous to the role of voltage in electrical circuits. During this time, he became aware of the interplay of ecological-energetic and economic forces. By the end of the s Odum’s electronic circuit ecological simulation models were replaced by a more general set of energy symbols.
One needs a diode to allow biomass to accumulate after the voltage of the sun has gone down. According to Hallp.
Odum arrived at the concept he termed hierarchical organization. Odum and Howard T. Liibro represent biotic pools and ovals are fluxes or energy or nutrients from the system.
He classified water bodies based on their P-R ratios, this separated autotrophic from heterotrophic ecosystems: Odum was measuring the community as a system, not adding up the metabolism of the components as Lindeman and many odm had done”.
In the s in the latter part of his career H. An Introduction to Systems Ecology In observing the way higher order trophic levels have a control function in ecosystems, H.
Howard T. Odum – Wikipedia
If this postulate is applied to all of nature, the resulting proposition is that nature is as a whole in a steady state or is in the most stable form possible and constitutes one big entity. The second law of thermodynamics appears to be another special case.
Howard Odum – Wikipedia
This ambitious program in systems ecology was summarized in Odum’s semipopular book, Environment, Power, and Society Further to this Odum also mooted two more additional thermodynamic laws see Energeticsbut there is far from consensus in the scientific community about these proposals, and many scientists have never heard of H.
Concepts and methods in ecological engineering. This does not necessarily contradict evolutionary changes in the earth’s history since these changes may be part of a larger steady state systems. And as an ecologist interested in the behavior and function of large entities over time, Odum therefore sought to give a more general statement of natural selection so that it was equally applicable to large entities as it was to small entities traditionally studied in biology.
This research calculated the potential value of primary production per bay surface area. This step took him from his early interest in ornithology and brought him into the emerging field of systems ecology. The unit of emergy past available energy use is the emjoule, as distinguished from joules used for available energy remaining now. Odum was also honored by the journal Ecological Engineering  for his contributions to the field of ecological engineering and ecology in general in recognition of his 70th birthday.
The second, revised edition of his major lifework was retitled Ecological and General Systems: His dissertation was titled The Biogeochemistry of Strontium: These small ecosystems were often constructed from fish tanks or bottles and have been called microcosms. As soon as it does the system fits the definition of an entity.
Lotka ‘s articles on the energetics of evolution, and subsequently proposed the theory that natural systems tend to operate at an efficiency that produces the maximum power output, not the maximum efficiency. From to H. Odum was a pioneer in his use of small closed and open ecosystems in classroom teaching. Jackson Alexander Christakis Kenneth D. Charles A S Hall has described Odum one of the most innovative and important thinkers of our time. This extension relied on the definition of an entity as a combination of properties that have some stability with time.
Hutchinson who expressed the view that if a community were an organism then it must have a form of metabolism. Odum in  well before he worked at the University of Florida. They continued to collaborate in research as well as writing for the rest of their lives.
Howard T. Odum
Odum or his views. This is one of his most important contributions to the beginnings of the field of ecological engineering.
Corning Harold G. However this principle has only been demonstrated in a few experiments  oum is not widely recognized in the scientific community. Odum in ; she had four children from her previous marriage. Higher organisms like fish are diodes. Circuit diagrams were skillfully used to illustrate the dependence of agricultural ecosystems and industrial societies upon fossil fuel subsidies Odum attempted to go beyond the reporting of mere ratios, a move which resulted in the first serious disagreement in systems energetics.
In this model energy and matter flows through an ecosystem: