KAJIAN KEANEKARAGAMAN TUMBUHAN PAKU (Pteridophyta) DI KAWASAN AIR TERJUN KAKEK BODO PRIGEN PASURUAN SEBAGAI SUMBER BELAJAR BIOLOGI

Indonesia is one of the tropical countries with a high level of plant biodiversity. One group of plants that is particularly rich in species diversity is ferns. Ferns (Pteridophyta) constitute an important component of biodiversity in Indonesia. They play a significant role in tropical forest ecosystems, especially in areas with high humidity levels such as waterfalls. Based on the environmental conditions of Kakek Bodo Waterfall, which include cool temperatures, high humidity, varying light intensity, and relatively suitable soil pH, the area has the potential to serve as an ideal habitat for various species of Pteridophyta. The suitability of Pteridophyta as a learning resource can assist students in achieving learning objectives. Therefore, developing specific learning resources related to environmental issues using Pteridophyta is essential to foster students’ awareness and concern for their surrounding environment. The purpose of this study was to determine the diversity of Pteridophyta species in the Kakek Bodo Waterfall area, Prigen District, Pasuruan Regency, based on the identified species diversity and the diversity index of the Pteridophyta found. This research employed a quantitative approach with a descriptive quantitative design. The sampling technique used was purposive sampling with the cruising method, by determining different research points divided into Station I, Station II, and Station III. Data analysis techniques included abiotic factor analysis, the Shannon–Wiener diversity index (H’), and analysis of Pteridophyta characteristics. The results of the study identified 10 species of Pteridophyta belonging to 6 different families. The highest diversity index value was found at Station II, followed by Station III, while the lowest was recorded at Station I. Based on the diversity index value, the diversity of Pteridophyta species in the study area was categorized as low. The presence of Pteridophyta species at Stations I, II, and III indicates that abiotic factors at Kakek Bodo Waterfall, Prigen, Pasuruan significantly influence the growth of Pteridophyta species.