Final answer:
Gergen emphasizes biological diversity and its impact on human culture, economics, politics, and daily lives in the interdisciplinary connection.
Step-by-step explanation:
The emphasized topic in Gergen's interdisciplinary connection is biological diversity and its extent, role, value, and fate. This common concern about the diversity of life forms transcends disciplinary boundaries and attracts researchers and practitioners from various disciplines. Gergen, who has a background in medicine and physiological ecology, emphasizes the importance of understanding and preserving biological diversity as it impacts human culture, economics, politics, and daily lives.