Noun

(en noun)

A system formed by an ecological community and its environment that functions as a unit.

* {{quote-magazine, date=2012-01

, author=Donald Worster , title=A Drier and Hotter Future , volume=100, issue=1, page=70 , magazine= citation , passage=Phoenix and Lubbock are both caught in severe drought, and it is going to get much worse. We may see many such [dust] storms in the decades ahead, along with species extinctions, radical disturbance of ecosystems , and intensified social conflict over land and water. Welcome to the Anthropocene, the epoch when humans have become a major geological and climatic force.}}

The interconnectedness of organisms (plants, animals, microbes) with each other and their environment.

(business, marketing) A set of interconnected products and services.

Noun

(uncountable) The study of the geographical distribution of living things

The geographical distribution of a particular living thing

* {{quote-book, 2004, Brian P. Hedlund & James T. Staley, chapter=Microbial Endemism and Biogeography, Microbial Diversity and Bioprospecting, editor=Alan T. Bull citation

, passage=First, any international traveler knows that many pathogenic microbes, both viral and bacterial, have distinct biogeographies .}}