Parrots include in birds of Aves class and Psittaciformes order. In Indonesia, parrots in known by their local species names such as Nuri (true parrot), Kakatua (Cockatoo), and Perkici (Loriini). Parrots can be found almost in all type of habitat in Halmahera Island, Maluku Utara Province, from mangrove forest to tropical rainforest in lowlands and highlands in Halmahera Island. The research aims to describe community activities in the exploitation of parrots around the Aketajawe Lolobata National Park, Halmahera Island. The study uses the ex-post facto method with the questionnaire as the instrument to interview the communities consist of the catcher, seller, and owner of parrots. Research result data is analyzed descriptively and presented in the form of tables and charts. The result shows that there are five kinds of parrots that are caught, sold, and raised by the communities of Gitaraja, Bale, Koli, and Kosa Village. The exploited birds are Kasturi Ternate (Lorius garrulus) Nuri Kalung Ungu (Eos scuamata), Nuri Bayan (Eclectus roratus), Kakatua Putih (Cacatua alba) and Kakatua Jambul Kuning (Cacatua galerita). The number of parrots being caught during 2013-2016 is 327, 320 are sold, and 213 are raised. The highest percentage of parrot catching and selling is 21% in 2013, and the lowest is 2% in 2016-2018. The highest percentage of raising is 8% in 2015, and the lowest is 3% in 2018. Kasturi Ternate (Lorius garrulus) is the species with the highest rate of exploitation.

Abstract. Harmonis, Rahim A, Hidayat HA, Saud OR, Wilujeng M, Sampe R, Kartika KF, Aminudin, Butar TB. 2022. Diversity of butterflies in the tropical wetland of Kayan-Sembakung Delta, North Kalimantan, Indonesia. Biodiversitas 23: 3303-3312. Butterflies, which belong to the order Lepidoptera, are considered superior biological indicators to evaluate environmental conditions in various types of habitats due to their high richness in biodiversity, short generation time, good movement, and high sensitivity. Since butterflies produce various benefits for the ecosystem, their conservation currently receives significant attention in order to improve human well-being. However, there is still limited research about butterfly diversity in tropical wetlands, especially in Borneo (Kalimantan) Island. Herein, we identify the diversity of butterflies found in the Kayan-Sembakung Delta, North Kalimantan, which is still unexplored so far. The area was dominated by mangroves, peat swamps, and brackish swamps. The research locations inside the Kayan-Sembakung Delta were divided into 20 groups. The specimen was collected by an aerial insect net and bait traps. The diversity index, taxonomy structure, and domination index were further investigated. The results showed that the highest individuals (69) and species (36) had been found in Pembeliangan. Altogether, we found 608 individuals of 92 species in the areas studied. Among others, the family of Nymphalidae was noted as the most dominant. We stated that the diversity of butterflies was also influenced by the type of habitat, as it could be found at the peat swamp forest where the highest species were found. In the meantime, some unique species have been found in the Kayan-Sembakung Delta, including Arhopala overdijkinki, Hypolycaena thecloides, Drupadia johorensis, Idea leuconoe, and Polyura jalysus. The results of this study are expected to give more information for future management and conservation of the wetland areas, especially in the Kayan-Sembakung Delta.

Indonesia has approximately 39.6 million hectares of wetlands and almost 894,106 hectares in the Kayan Sembakung Delta, North Kalimantan Province. Despite in illegal status, the wetlands in the Kayan Sembakung Delta for decades have become a location where local people depend for their lives. Therefore, as part of resolving land conflicts, the implementation of Social Forestry (SF) can be offered to the community in the area. This study aims to identify problems in SF implementation in the Kayan Sembakung Delta and efforts to solve them. Data collection was obtained by interviewing the key informants, FGDs, and field observations together with the community member of 5 villages in North Kalimantan namely Liagu Village in Sekatak District - Bulungan Regency, Salimbatu Village in Tanjung Palas Tengah District - Bulungan Regency, Sengkong Village in Sesayap Hilir District - Tana Tidung Regency, Atap Village in Sembakung District - Nunukan Regency and Tepian Village in Sembakung District - Nunukan Regency. The study showed that the implementation of SF in the Kayan Sembakung Delta just in the early phase and facing numerous technical problems such as institutional, facilitating, management plan, funding, human resources, the potential for natural resource development, groups of social forestry business, and support from other parties. This study found that the main problem in implementing SF in the Kayan Sembakung Delta is the weak capacity of the human resources of SF management institution. This condition caused that the implementation of SF programs in this area must receive support from parties, especially in policy support and improving human resources.

Mangrove ecosystem have various important roles as habitat for marine and terrestrial species. However, the ecosystem has recently faced anthropogenic threats delivered by the expansion of aquaculture pond. Study of mangrove diversity was conducted in Production FMU Bulungan Unit VIII, North Kalimantan. The study was aimed to analyze species diversity in the FMU Bulungan Unit VIII and determine community perception on existing mangrove condition. Vegetation analysis was applied to quantify mangrove community in two sampling locations, Salimbatu and Liagu, within 26 quadratic plots (10mx10m). As many as 63 respondents were interviewed to analyze communities’ perception. As the result, 10 species were identified species and one unidentified species recorded during the survey. Rhizophoraceae was dominated the species composition in sampling area. Rhizophora mucronata had the highest Importance Value Index in tree and seedling stage while Rhizophora apiculata was dominant in sapling stage. On the other hand, Bruguiera parviflora was recorded on each growth stages in all sampling plots. Species diversity index (H’) of mangrove vegetation in the FMU was found at 1,68 with species richness index value 1,58. This diversity index considered as moderate diverse since only few vegetation species are able to live in the mangal. The perpendicular structure of mangrove in the FMU formed an inverse J-shape which showed normal growth of uneven-age forest stand. The interview result implied that more than 50% of the respondent considered that mangrove condition in their village area has been disturbed. Therefore mangrove management with local community involvement is neccessarily required to improve the mangrove performance. Keywords: communities perception, habitat, mangrove, species diversity

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