KEANEKARAGAMAN DAN POLA SEBARAN JENIS MANGROVE DI SPTN WILAYAH I BEKOL, TAMAN NASIONAL BALURAN

Abstract

Mangroves in Baluran National Park are one of the natural mangroves on Java Island. Habitat conditions strongly influence mangrove preservation, so any changes can affect species composition. Along with global climate change, it can directly or indirectly impact on mangroves and their habitat. The purpose of this study was to determine the diversity of species and distribution patterns of mangroves. The research was conducted in mangroves located in SPTNW 1 Bekol Baluran National Park with an area of ± 288.7 ha with a sampling intensity of 0.5% to obtain 145 measuring plots. Data collections of mangrove vegetation use a combination of pathway and sampling plot methods which are placed systematically. Diversity analysis uses the Simpson index and distribution patterns with the dispersion index/variance-mean ratio. The measurements obtained 22 types of mangroves with 13 species at the seedling level, 19 species at the weaning level, and 21 species at the tree level. The highest density was at the seedling level (8,347.32 individuals/ha). The diversity of mangrove species at the seedling level is moderate, while weaning and trees are in the high category. The majority of mangrove species found have a clustered distribution pattern, with the dominant species being Ceriops tagal and Rhizophora apiculata.