IPA: /ˌbaɪoʊdʒiˈɡræfər/
KK: /baɪoʊdʒiˈɒɡrəfə/
A person who studies the distribution of plants and animals in different environments and regions.
The biogeographer presented her research on how climate change affects species distribution.
Biogeographer → It is formed from "bio-" (from Greek "bios", meaning life) and "geographia" (from Greek "geographia", meaning description of the earth). The word "biogeographer" refers to someone who studies the distribution of life across different geographical areas.
Think of 'life' ('bio-') being studied in relation to the 'earth' ('geographia') — that's what a biogeographer does.