Produksi Serasah Musiman pada Berbagai Spesies Mangrove di Pesisir Kabupaten Muna Barat, Sulawesi Tenggara

Rahman Rahman; Yusli  Wardiatno; Fredinan  Yulianda; Iman  Rusmana

doi:10.18343/jipi.25.3.323

Rahman Rahman Sekolah Pascasarjana, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor, Kampus IPB Darmaga, Bogor 16680
Yusli Wardiatno Departemen Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor, Kampus IPB Darmaga, Bogor 16680 dan Pusat Penelitian Lingkungan Hidup, Jl. Akademik Kampus IPB Darmaga, Bogor 16680
Fredinan Yulianda Departemen Manajemen Sumberdaya Perairan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor, Kampus IPB Darmaga, Bogor 16680
Iman Rusmana Departemen Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Kampus IPB Darmaga, Bogor 16680

DOI: https://doi.org/10.18343/jipi.25.3.323

Abstract

Mangrove litter production is important in the displacement of organic matter from mangrove vegetation to water such as in the coast of West Muna Regency. However, one factor influencing it is the frequency of rainfall. This research, therefore, aims to determine the influence of the frequency of rainfall in mangrove ecosystem by obtaining data through the fractional wet weight. The results showed that the biomass fraction with the largest amount were Rhizophora mucronata, Rhizophora apiculata, and Sonneratia alba with of 31.59; 31.07; and 30.96%, respectively, while the lowest was Rhizophora stylosa, Bruguiera cylindrica, and Bruguiera gymnorrhiza with of 30.07; 30.10; and 31.95%, respectively. The species with the largest leaf litter production was Bruguiera cylindrica, with of 1.72 g.m^-2.day^-1 which occurred in April and the lowest was Rhizophora apiculata, 0.24 g.m^-2.day^-1 in August. The species with the largest leaf litter production was Bruguiera cylindrica, 1.96 g.m^-2.day^-1 which occurred in May and the lowest was Sonneratia alba, 0.29 g.m^-2.day^-1 in August. In addition, the species with the largest fruit litter production was Rhizophora apiculata, 1.76 g.m^-2.day^-1 in April and the lowest was Sonneratia alba, 0.32 g.m^-2.day^-1 in September. The total litter production was 18,75 g.m^-2.day^-1 consisted of 6,69 g.m².day^-1 leaf litter, 6,54 g.m^-2.day^-1 branch litter, and 5,52 g.m^-2.day^-1 fruit litter. The higher the frequency of the rain, the greater the litter production.

Keywords: biomass fraction, seasonal litter production, West Muna Regency

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