One thing that blows my mind about endemism descriptions right now refers to specific sub quadrant groups of potentially interacting populations.
Gamodeme, or deme, refers to a local breeding population or mating group within a species, where random mating (panmictism) occurs and is now used mostly for this specific type of phenomena.
Where as other literature keeps separate usage for the term “population.”
“Being a local interbreeding group of individuals sharing a common gene pool”- Dabzansky, 1935 in Rieger. Which was also supported again by population ecologists in 1976 by literature under ‘Green and Michaelis.
^this concept of “population” is now how the vast majority of population ecologists seem to quantify the word outside of statistics where it is a large assemblage of specific individuals from the taxon of interest becoming the sample group. Which is a much looser term that could be quantified of large and small amounts of space simultaneously.