Abstract. Yuliana E, Hewindati YT, Winata A, Djatmiko WA, Rahadiati A. 2019. Diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra, Indonesia. Biodiversitas 20: 1215-1221. The purpose of the study was to analyze the flora diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra. Data collected were the number and girth diameter of mangrove tree species, and aquatic ecology parameters using transect method. The sample plots size were 2m×2 m; 5m×5 m; 10m×10 m; for seedling, sapling, and tree, respectively. The observation plots were arranged in a row of 120 m length on two sides of the forest edge, namely Calik Riverbank and Banyuasin Riverbank. Data were analyzed using importance value index (IVI), Simpson’s diversity index and Sørensen’s community similarity. The study revealed that there were differences in mangrove characteristics in two study sites. There were 57 plant species identified inside and outside sample plots, but only 15 species (26.32%) among them were categorized as true mangrove species. Inside the sample plots, there were 11 and 10 mangrove tree species recorded on the Calik Riverbank and Banyuasin Riverbank, respectively, but only 7 species among them were found in both sites. The mangroves on Calik Riverbank were dominated by Nypa (IVI 53.59%) and Bruguiera (51.12%), while those on Banyuasin Riverbank were dominated by Sonneratia (66.91%) and Avicennia (51.73%). The Simpson’s diversity index for Calik Riverbank and Banyuasin Riverbank was 0.82 and 0.78, respectively, whereas the Sørensen’s coefficient of community between the two sites was 0.67.

The large island of New Guinea has a rich indigenous astacofauna represented by numerous parastacids from the genus Cherax. The western half of the island is part of Indonesian territory. Indonesia is known to be the main exporter of ornamental crayfish globally, and certain New Guinean species are exploited as ornamentals within the international pet trade. Moreover, one non‐indigenous species has been previously recorded being cultured in Java, Indonesia. This species, the North American Procambarus clarkii, is a vector of crayfish plague, the disease that is lethal to most parastacids. This population has already tested positive for the disease. As the transport of non‐indigenous crayfish within the Indonesian territory is not restricted, their introduction to New Guinea can be expected. The Indonesian market was therefore surveyed for ornamental crayfish and their environmental suitability evaluated, as represented by temperature during the drought and rainy seasons in New Guinea. Four North American and one Australian species were found advertised for sale. One of them, P. clarkii, was assessed as the most damaging species, followed by other North American species. A total ban on the culture and transport of the highest risk crayfish species in Indonesia and Papua New Guinea is recommended.

Abstract. Collaborative Forest Management Program (PHBM) is formed by Perhutani for more involving community in forest management in Java. The active participation of forest farmers in the PHBM program is the key factor in achieving PHBM program. This paper analyse characteristics influence to the level of forest farmer participation in PHBM program. Located in the Buniwangi Village, District of Palabuhanratu, Sukabumi , research based on a quantitative survey with descriptive and regression analysis. Most of the forest farmers have participation in PHBM planning meetings, meetings of implementation, and evaluation of PHBM meeting. Age of forest farmers have significanly influence to farmers' participation in the planning and evaluation of PHBM program.

Karimunjawa National Park (KNP) has a high diversity of coral reef and fish. This study is aimed to analyze the biodiversity of reef fish in KNP. Field survey was conducted in KNP, District of Jepara, Central Java, in April-Juni 2015Keywords: biodiversity, reef fish, Karimunjawa, marine protected area ABSTRAK Taman Nasional Karimunjawa (TNKJ) mempunyai keanekaragaman terumbu karang dan ikan yang tinggi. Tujuan studi ini adalah menganalisis kesehatan habitat dan biodiversitas ikan karang di TNKJ. Penelitian dilakukan di TNKJ Kabupaten Jepara, Jawa Tengah, pada April-Juni 2015. Pengumpulan data menggunakan metode survei dan observasi. Data primer yang dikumpulkan adalah jumlah individu ikan karang per famili, persentase tutupan karang, kekeruhan, kadar nitrogen (N) total dan PO4. Data sekunder didapatkan dari Balai TNKJ. Penghitungan jumlah individu ikan karang menggunakan belt transect dan pengukuran tutupan karang menggunakan metode line intercept transect (LIT). Biodiversitas ikan karang diukur melalui indikator kelimpahan dan biomassa ikan. Hasil penelitian menunjukkan bahwa rata-rata tutupan karang pada tahun 2015 adalah 44,70%. Tutupan karang tertinggi adalah di Taka Malang (zona inti TNKJ) 65,65% dan yang terendah adalah di Nirwana (zona tradisional perikanan) yaitu 35,45%. Kelimpahan ikan pada tahun 2015 didominasi oleh Pomacentridae (60,46%) dengan kelimpahan 14.850 ind/ha, kedua adalah Caesionidae (11,77%) dengan kelimpahan 2.892 ind/ha, ketiga adalah Scaridae (6,27%) dengan kelimpahan 1.540 ind/ha. Biomassa tertinggi tahun 2015 dimiliki oleh Scaridae (122,33 kg/ha), urutan kedua adalah Caesionidae (104,91 kg/ha), dan urutan ketiga adalah Serranidae (50,80 kg/ha). Biodiversitas ikan karang di TNKJ terjaga baik, karena familifamili yang menjadi target utama tangkapan nelayan memiliki kelimpahan dan biomassa yang tinggi.Kata kunci: biodiversitas, ikan karang, Karimunjawa, kawasan konservasi

Abstract. Yuliana E, Boer M, Fahrudin A, Kamal MM, Pardede ST. 2019. Using ecosystem approach indicators for assessing the ecological status of reef fisheries management in a marine protected area. Biodiversitas 20: 1802-1810.  The purpose of this study was to assess the status of reef fisheries management in a marine protected area base on ecosystem approach indicators and to determine the tactical decisions required to improve management. The study site was in Karimunjawa National Park (KNP) Jepara, Central Java, Indonesia. Data were collected using survey and observation methods and included both primary and secondary data. Coral fish, which were the object of the study was Caesio cuning, Caesio caerulaurea, Plectropomus oligacanthus, and Parupeneus barberinus. Determination of the status of each ecosystem approach indicator was conducted using the flag model. Tactical decisions were necessary to improve the status of management indicators. The results indicated that the ecological status of reef fisheries management of KNP is at a moderate level with an achievement value of 62.75% Tactical decisions are necessary to push the ten indicators to achieve a better level. Three indicators still received a poor status, and the remaining (seven indicators) were within the moderate status. Therefore, the three indicators that need to be improved quickly are fish abundance, fishing gear modification, and fishing capacity.