A New Ecology: Systems Perspective - download pdf or read online

By Sven Erik Jørgensen, Brian Fath, Simone Bastianoni, Joao C. Marques, Felix Muller, S. Nors Nielsen, Bernard D. Patten, Enzo Tiezzi, Robert E. Ulanowicz

ISBN-10: 0444531602

ISBN-13: 9780444531605

A New Ecology offers an surroundings concept according to the next surroundings houses: actual openness, ontic openness, directionality, connectivity, a posh dynamic for progress and improvement, and a posh dynamic reaction to disturbances. each one of those homes is constructed intimately to teach that those easy and attribute houses should be utilized to give an explanation for a large spectrum of ecological obsevations and convections. it's also proven that the homes have program for environmental administration and for evaluate of surroundings future health.

* Demonstrates an surroundings thought that may be utilized to give an explanation for ecological observations and rules
* offers an environment concept established upon a platforms approach
* Discusses an atmosphere concept that's in line with a couple of uncomplicated houses which are attribute for ecosystmes

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Additional info for A New Ecology: Systems Perspective

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After Jørgensen (1984). Source: Fundamentals of Ecological Modelling by Jørgensen and Bendoricchio. (for aquatic organisms) follow the same trends as the metabolic rate. This is of course not surprising, as excretion is strongly dependent on metabolism and the direct uptake dependent on the surface. , 1999), which with other words can be used to assess the relationship between the size of the units in the various hierarchical levels and the process rates, determining the need for the rate of energy supply.

28) The diffusion rate, corresponding to the uptake rate is a diffusion coefficient (D)ϫ the concentration gradient (dC/d rϭCd/2r 2 or at the surfaceϭ2C/d)ϫthe opennessϭareaϭ d 2, or therefore 2 dDC, where D is the diffusion coefficient and C the concentration in the environment. 29) where f is the need per unit of time and volume. The relative uptake rate will be four times smaller, if the diameter is doubled. This equation demonstrates the importance of the cell size and explains, therefore, indirectly the hierarchical structure, because small cells are the prerequisite for a sufficient supply of nutrients, although there are many additional explanations.

E. toward thermal death. A sink is just as necessary for life as a source to ensure the temperature that is required for carbon-based life. Morowitz (1968) continues that all biological processes depend on the absorption of solar photons and the transfer of heat to the celestial sinks. The sun would not be an exergy source if there were not a sink for the flow of thermal energy. The surface of the Earth is at a constant total energy, re-emitting as much energy as it absorbs. The subtle difference is that it is not energy per se that makes life continue but the flow of energy through the system.

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A New Ecology: Systems Perspective by Sven Erik Jørgensen, Brian Fath, Simone Bastianoni, Joao C. Marques, Felix Muller, S. Nors Nielsen, Bernard D. Patten, Enzo Tiezzi, Robert E. Ulanowicz

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