Suyatna I, Bratawinata AA, SidikAS, Ruchaemi A (2011) Demersal fishes and their distribution in estuarine waters of Mahakam Delta, East Kalimantan. Biodiversitas 12: 204-210. The study aimed (i) to identify of the demersal fishes, (ii) to analyze the diversity and (iii) to determine their distribution. Surveys were carried out between August 2009 and January 2010 in Mahakam Delta, East Kalimantan. Data were analyzed using several indices of Shannon Weaver, Simpson, Margalef species richness, and Bray Curtis distance. The canonical correspondence analysis (CCA) was also used to correlate between fish species and their environmental factors and to show the fish distribution. Sixty samplings were done using bottom-trawl at various water depths from one to forty two meters to collect the data. Taxonomically, during the study, 10 orders, 61 families, 87 genera and 131 species of fish with 43340 individuals were identified. Among the families, Leiognathidae was the most important group of fish, they distributed throughout the depths. Meanwhile CCA showed that Leiognathidae and Sciaenidae were observed to be rich in the shallow water. Generally, index of Shannon Weaver, Simpson and Margalef species richness ranged between; 0.52 and 2.48; 0.11 and 0.82; 2.24 and 18.61 respectively. Bray Curtis distanceindicated the significant difference of individual number of demersal fishes between shallow and deep waters.Key words: Mahakam delta, water depth, trawl, demersal fish, canonical correspondence analysis

Abstract. Sari YP, Kustiawan W, Sukartiningsih, Ruchaemi A. 2017. Short Communication: The potential of secondary metabolites of Myrmecodia tuberosa from different host trees. Nusantara Bioscience 9: 170-174. Ant-plants (Myrmecodia tuberosa Jack.) is a medicinal plant that could potentially inhibit cancer cell growth. Ant-plants is epiphytic plants whose commonly life was attached to the host tree. Several information from local people stated that ant-plants attaching to different host trees possesses different active compounds. The purpose of this study was to determine the secondary metabolites of each parts of ant-plants including leaves, stems and tubers from different tree hosts i.e mango and durian. Result from phytochemical analysis showed that ant-plants living in mango and durian trees positively contained the metabolic compounds including phenolics, flavonoids, alkaloids, saponins and steroid/triterpenoid. The Total of Phenolic Content (TPC) and the Total of Flavonoids Content (TFC) on the leaves of ant-plants was higher than that in tubers or stems of ant-plants derived from both host trees i.e mango and durian. The value of TPC and TFC of the ant-plants leaves derived from the durian host tree (319.33 ± 0.06 mg GAE/g and 272.33 ± 0.02 mg CE/g) was higher than those from mango host trees (172.80 ± 0.02 mg GAE/g and 162,83 ± 0.01 mg CE/g). Ant-plants, whose life was attached to a different host tree, had the same content of secondary metabolites although those quantities were different in each host trees. Therefore, ant-plants from different host trees could be used as a medicinal plant by concerning the amount of used extract for effectiveness medicinal purposes.

This study identifies the benefits that traditional communities receive from the tropical rain forest in New Guinea, Indonesia. In this study, various benefit sharing schema developed by forest concession holder are assessed to understand the precise outcome compared to traditional welfare solutions. It further aims to identify benefit sharing schemas applied by concession investors in the forest sector and assesses these schema based on equitable principles. A questionnaire and semi‑structured interviews were used to collect data from traditional communities, concession holders, and the government. Interviews and field observations were randomly conducted and then analyzed for both quantitative and qualitative descriptions. The results indicate that there were five benefits sharing schemas i.e., those based on financial schema, based on the market, based on infrastructure, based on social management, and based on the transfer of knowledge and technology. Overall, all the schemas that were developed did not fulfil the same criteria. However, there were only two schemas that were considered to be equal and efficient: the financial based‑schema and infrastructure based‑schema. This is indicated by the larger number of criteria and requirements that they fulfil. Yet, all the schemas still present various conflicts either between customary communities and the government or between the communities and investors.

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