Abstract
The diversity of ferns (Pteridophyta) in the five mountainous in West Java (Mt. of Patuha, Papandayan, Tangkuban Perahu, Pangrango, and Guntur) has not been widely reported. The aim of this research was to obtain data on diversity and similarity of fern species in the five mountains in West Java. This research was conducted by exploring and descriptive analysis method. Comparison of species diversity among all reseach field were calculated by the index of species similarity according to Sorenson. The diversity of ferns in Mt. Patuha, Papandayan, Tangkuban Perahu, Pangrango, and Guntur were 27, 14, 26, 40 and 5 species, respectively. The total number of ferns species in five locations are 83 species from 25 families. Comparison of species diversity among fileds based on the Sorenson similarity index is low (<50%), except between the Mt. Patuha and Mt. Papandayan areas is high (> 50%).
Highlights
A fern is one species of interesting flora in Indonesia
The ferns have a distinctive form of young leaves, shaped like a loop of rope, which is not found in other plants
Ferns are grouped into cryptogamae that have vessels and prefer to grow in moist areas; about 65% are found in tropical rainforest areas (Hietz, 2010)
Summary
A fern is one species of interesting flora in Indonesia. The number of this species in the world is estimated there are. According to previous paper (Kessler, 2010), in general, species of ferns grow abundantly in mountainous areas compared to the lowlands. The ferns have a role both ecologically and economically. In contrast to previous studies, this study examines the existence of ferns in five mountains in West Java These mountains were chosen as a research field, due to the lack of publicity about the existence and diversity of ferns in the area. Aim of this study is rationalize a relationship between diversity and the similarity of ferns in this region which is expressed by the similarity index
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