Objective. Information products and services provided by academic libraries to support the educational process and research are a component of the information ecology of educational institutions, but their list within each academic library depends on the institutional ecology. Therefore, it is useful to study the practical experience of various academic libraries in ensuring the information ecology of research universities. As an example, we consider the successful experience of G. Denysenko Scientific and Technical Library of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute" (KPI Library). Methods. A qualitative method of longitudinal research was used to obtain data and analyze the KPI Library information services. A number of primary data sources were used, such as diaries of first-hand reflection, observations, engaged in documenting and developing a narrative about the effectiveness of interaction of students, lecturers, scientists with the information environment. Analytical and review, logical, systematic methods are applied to substantiate the place of library service in information ecology. Results. The experience of KPI Library in ensuring the information ecology of the university was studied. Ways of organizing prompt, effective and safe (ecological) interaction with users and support of internal information products and services are analyzed. It is shown which services (tools and information resources) and areas of activity of the library form the information ecology of Igor Sikorsky Kyiv Polytechnic Institute. The role of the library in the formation of information culture and the culture of academic integrity of scientists, teachers and students of the university is shown. Conclusions. The considered example of KPI Library activity confirms that an academic library is directly involved in formation of the information ecology of a research university. A deeper analysis of the value of products and the effectiveness of library services for various members of the academic community as a component of the information ecology of the university may be the subject of further research.