Fern Diversity as a Baseline for Sustainable Management of Waterfall Ecosystems: A Case Study from Curug Gondoriyo, Semarang, Central JavaLilih Khotimperwati, Dewi Suci Permatasari and Jumari JumarBIO Web Conf., 196 (2025) 01007DOI: https://doi.org/10.1051/bioconf/202519601007