The term "ecosystem" is frequently used to describe various concepts, not only in open science but also in broader discussions of research and innovation. Despite its widespread use, it is rarely explicitly defined, often functioning as a boundary object that facilitates communication across diverse communities. Systematically documenting its varied, context-dependent meanings presents a significant challenge. This work in progress explores the term "ecosystem" within the discourse of Open Science, offering a systematic approach to mapping its varied meanings and uses.