Setyawan. 2018. Diversity of mangrove vegetation and carbon sink estimation of Segara Anakan Mangrove Forest, Cilacap, Central Java, Indonesia. Biodiversitas 19: 246-252. Mangrove forests are known as standing stores of sequestered atmospheric carbon. The role of mangrove forests in the sequestering substantial amount of atmospheric carbon dioxide (CO2) and storing the carbon in its biomass has been recently underscored. This research aimed to estimate vegetation diversity and carbon sink potential of Segara Anakan Mangrove Forest Cilacap, Central Java from August-December 2012. Vegetations sampling was done by square plots technique. Diversity index was utilized to determine species diversity. Allometric equations were used to estimate biomass and carbon sinks. This study only calculates aboveground biomass and carbon sinks. The research results showed that mangrove in Segara Anakan was composed of 24 species with 19 families, consisting of 16 species of trees, 14 species of saplings and 16 species of herbs. The most dominant tree was Avicennia marina with importance value of 43.62% in Kembang Kuning, 60.27% in Ujung Alang and 25.6% in Klaces. The most dominant of sapling was Avicennia marina, with an important value of 31.1%. The total biomass of a tree is about 43.06 kg/tree or 0.13 ton/ha. Total biomass of sapling was 27.38 kg/tree or 0.32 ton/ha. The carbon sink of the tree was 49.10 ton/ha and carbon sink of sapling was 79.39 ton/ha. It can be concluded that Segara Anakan Mangrove forest is very important as a carbon sink in South part of Central Java, Indonesia.

Mangrove communities are part of the natural coastal ecosystems that have a vital role, such as the greatest source of organic material for the surrounding aquatic environment. A variety of ecological phenomenon often happens recently, either directly or indirectly affects the change of mangrove vegetations. Leaf is one of the plant organs that change shape according to the condition of the mangroves and the aquatic environment where the plant lives. The common changes of the leaves are the symmetry (morphometry), the size, and the shape. Mangrove leaves are also subjected to herbivory (predation), that will result in reduced leaf area of the photosynthesis and lowered the production of organic matter to the surrounding waters. This research aimed to determine the morphometric variation and herbivory rates of mangrove leaves at Segara Anakan Cilacap. Mangrove samples were Aegiceras corniculatum, Avicennia marina, Ceriops tagal, Rhizophora apiculata, and Sonneratia caseolaris. The study used survey method with stratified random sampling technique. The results showed morphometric variations of the five species were three variations, while the average herbivory rate from highest to lowest were: Avicennia marina (7.46%), Sonneratia caseolaris (6.91%), Rhizophora apiculata (4.08%), Aegiceras corniculatum (3.42%) and Ceriops tagal (3.00%). The difference of age and species of leves affected the herbivory level.

Mangroves are coastal ecosystems that have a very large role for humans and ecosystems in the vicinity. Mangrove condition in Indonesia, including in Segara Chicks Cilacap experiencing enormous pressure resulting in damage to the mangrove ecosystem. Mangrove restoration is the process of return of mangrove ecosystems of the conditions are broken into previously conditioned as well. The general objective of this study was 1) determine the conditions and amendments BioEkologi mangrove ecosystem restoration in the area of results Segara Chicks. Specific objectives in the study the first year is to determine: 1) the community structure of mangrove ecosystems (vegetation and fauna associations) at a restoration site in the region Segara Chicks, 2) the spatial variation community mangrove ecosystem in the area of restoration, and 3) the condition of the environmental factors that support the mangrove restoration in the region Segara Chicks. The method used was survey method with the technique of sampling cluster random sampling. The data obtained were analyzed multivatiate covering biodiversity analysis, cluster analysis, multi-dimensional sclae (MDS), and Bio-env using PRIMER-E program. The study shows the restoration of mangrove vegetation in the region have relatively low diversity (H '<1), and in areas that have not been restored only dominated shrub species (Acanthus and Derris). Environmental factors generally favor mangrove Vegetasia life, and have the same tendency for each restoration location with a level of similarity> 95%. Keywords: restoration, Bioecology, mangrove, Segara Anakan AbstrakMangrove merupakan ekosistem pantai yang mempunyai peran sangat besar bagi manusia dan ekosistem lain di sekitarnya. Kondisi mangrove di Indonesia termasuk di Segara Anakan Cilacap mengalami tekanan sangat besar yang berakibat pada kerusakan ekosistem mangrove. Restorasi mangrove merupakan proses pengembalian ekosistem mangrove dari kondisi yang rusak menjadi seperti sebelumnya yang berkondisi baik. Tujuan umum dari penelitian ini adalah 1) mengetahui kondisi bioekologi ekosistem mangrove dan perubahannya dari hasil restorasi di kawasan Segara Anakan. Tujuan khusus pada penelitian tahun pertama adalah untuk mengetahui: 1) struktur komunitas ekosistem mangrove (vegetasi dan fauna asosiasi) pada lokasi restorasi di kawasan Segara Anakan, 2) variasi spasial komunitas ekosistem mangrove pada area restorasi, dan 3) kondisi faktor lingkungan yang mendukung dalam restorasi mangrove di kawasan Segara Anakan. Metode yang digunakan adalah metode survey dengan teknik pengambilan sampel secara Cluster Random Sampling. Data yang diperoleh dianalisis secara multivatiate yang meliputi analisis biodiversitas, cluster analysis, multi dimensional sclae (MDS), dan Bio-env dengan menggunakan program PRIMER-E. Hasil studi menunjukkan vegetasi mangrove di kawasan restorasi memiliki keragaman yang relatif rendah (H'< 1), dan pada daerah yang belum direstorasi hanya didominasi jenis semak (Acanthus dan Derris). Faktor lingkungan secara um...

Abstract. Vegetation types are an above-ground component that plays an important role in shaping soil community through their different life history. Plant organic material as the main source for the below-ground community is available at various time and amount based on plant growth. The objective of this study was to compare the bacteria and nematode functional diversity on soil planted with five plant types. These greenhouse experiments are selected Oryza sativa L. (grass), Amaranthus sp. (herb), Solanum lycopersicum (L.) Karst. (shrub), Citrus reticulata Blanco (tree), and Arachis hypogaea L. (legume). To create seven treatments, control and plant mixture were included. Soil samples and plants were collected after five weeks for bacteria and nematode enumerations, plant biomass and specific leaf area measurements. Plant growth was followed approximately every two weeks. The bacteria were separated into the heterotrophic or autotrophic group and nematodes were classified into their functional group after identification. Canonical Correspondence Analysis was used to investigate the correlation between plant types and the soil organism composition. The preliminary results showed that the plant types determined the soil bacteria and nematode composition, except for O. sativa and S. lycopersicum with the greatest similarity of composition (eigenvalue: 0.33 and 0.24, correlation: 0.80, cumulative variance: 84.1 %). This was consistent with stem growth rate, leaf growth rate, specific leaf area and plant biomass allocation. Strong to medium correlations were observed between soil organisms and aboveground plant biomass allocation (r = -0.81), plant growth rate (r = -0.59) and leaf growth rate (r = -0.46) indicating below-ground resources most likely influenced soil food web development.