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The foundations of systematics lie in ontology, not in subjective epistemology. Systems and their elements should be distinguished from classes; only the latter are constructed from similarities. The term classification should be restricted to ordering into classes; ordering according to...
The intracellular symbiosis of leafhoppers is the first system in which the morphological description is extended to understand the principles of symbiosis on a molecular level. Host, symbionts and environment exist in mutual dependence with respect to pH, osmotic pressure, inorganic and organic...
Some data from earlier work concerning the evolutionary correlation of anthophilous insects, entomophilous plants, herbivorous animals, and natural soil groups are briefly summarized. Presumed successive evolution of plant and animal communities from the early Paleozoic era to the more recent...
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