biological equilibrium

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• Biological thermodynamics — is a phrase that is sometimes used to refer to bioenergetics, the study of energy transformation in the biological sciences. Biological thermodynamics may be defined as the quantitative study of the energy transductions that occur in and between… …   Wikipedia

• Biological pest control — Biological control of pests in agriculture is a method of controlling pests (including insects, mites, weeds and plant diseases) that relies on predation, parasitism, herbivory, or other natural mechanisms. It can be an important component of… …   Wikipedia

• biological development — Introduction       the progressive changes in size, shape, and function during the life of an organism by which its genetic potentials (genotype) are translated into functioning mature systems (phenotype). Most modern philosophical outlooks would …   Universalium

• Biological neuron model — A biological neuron model (also known as spiking neuron model) is a mathematical description of the properties of nerve cells, or neurons, that is designed to accurately describe and predict biological processes. This is in contrast to the… …   Wikipedia

• Equilibrium constant — For a general chemical reaction:alpha A +eta B ... ightleftharpoons sigma S+ au T ...the equilibrium constant can be defined by [F.J,C. Rossotti and H. Rossotti, The Determination of Stability Constants, McGraw Hill, 1961.] :K=frac{S ^sigma {{T^ …   Wikipedia

• Equilibrium gradient centrifugation — Also called: isopycnic density gradient centrifugation, is a type of centrifugation procedure widely used in biochemistry to separate molecules based on their isopycnic point (Buoyant Density). By spinning biological (or other) preparations at… …   Wikipedia

• biological reference points — Indicators or signposts against which the status of a stock can be judged. Two types are often used: based on fishing mortality and based on the sustainability of recruitment. Reference points can be either desirable targets (target reference… …   Fisheries — dictionary

• biological reference point — a fishing mortality rate or biomass that may provide acceptable protection against growth overfishing and/or recruitment overfishing for a particular stock. It is usually calculated from equilibrium yield per recruit curves, spawning stock… …   Dictionary of ichthyology

• biological balance — noun : a dynamic equilibrium existing between members of any relatively stable natural community and being the resultant of all the effects (as in food chains, parasitism, or pollinization) of the constituent organisms on one another …   Useful english dictionary

• bio-economic equilibrium — the simultaneous biological and economic equilibrium in a fishery. In a single stock model, the biological equilibrium condition is that the rate of change of the stock be zero. The economic equilibrium condition is that there be no change in… …   Dictionary of ichthyology

• Punctuated equilibrium — is a theory of evolutionary biology which states that most sexually reproducing populations experience little change for most of their geological history, and that when phenotypic evolution does occur, it is localized in rare, rapid events of… …   Wikipedia