http://5bio5.blogspot.com/2015/01/chapter-in-book-problems-at-species.html

Problems at the Species-Population Level


Professor Dr. Alexey V. Yablokov,
Dr. Sergey A. Ostroumov


Abstract

A population is a basic elementary unit at the species-population level. In the sense of evolution genetics, as population is designated a minimum self-propagating group of single-species individual animals which inhabits a certain space for an evolutionary long period, generates a self-maintained genetic system and forms its own ecological niche. A population is always an adequately numerous group of individual animals which is isolated from other similar groups for a large number of generations.