KOMPOSISI TUMBUHAN PAKU DI HUTAN KAMPUNG PASIA LAWEH KECAMATAN LENGAYANG KABUPATEN PESISIR SELATAN

Abstract

Fern plant is one of basic vegetation which has high species variety, and more of them are found at Pasia Laweh  Forest. Human activities around Pasia Laweh forest increase everyday. So it disturbs plant community in the forest. Because of that, the research had done which has purpose to know the composition and variety of fern plant there. This research had been doing from July until August 2007 with transek method. The identification was done in Botany Laboratorium Biology department in Mathematic and Science Faculty, Padang State University. The result from this research is the composition of fern plant consist of 18 species and 11 family. There are 15 fern terestrial plant species and 3 epifit fern species. High relative density was found at Nephrolepis falcata  species (21,404%), and the lowest is found Thelypteris sp 1 (2,074%). The highest relative frequency was Lygodium sp (9,670%) and the lowset was Thelypteris sp 1 (2,260%). Meanwhile, epifit fern plant has the highest relative density in Drynaria quersifolia species (3,180%) and the lowest is Lycopodium phlegmania (1,815%) with highest relative frequency Drynaria quersifolia (10,666%) and the lowest Lycopodium phlegmania (5,670%).

Keyword: Composition, fern, basic vegetation, species variety, forest