Abstract. Sukuryadi, Harahab N, Primyastanto M, Semedi B. 2020. Analysis of suitability and carrying capacity of mangrove ecosystem for ecotourism in Lembar Village, West Lombok District, Indonesia. Biodiversitas 21: 596-604. Mangrove ecosystems in Lembar Village, West Lombok District, Indonesia has high ecological role and economic potentials, and have been as a pilot area for mangrove conservation and rehabilitation activities. In 2015 the area was developed into a mangrove ecotourism area as a form of utilization to obtain ecological and economic sustainability for the local community. The purpose of this study was to determine the suitability and carrying capacity of the mangroves area for the development of mangrove ecotourism. Data collection was conducted using field surveys and direct observation. Data collected were then analyzed to calculate ecotourism suitability index and carrying capacity of the area. The results of data analysis showed that mangrove ecosystem area in Lembar Village is categorized as suitable to be developed as mangrove ecotourism at three stations with value of ecotourism suitability index of 77.78%, while at two stations are categorized conditionally suitable with ecotourism suitability index of 42.22%. Carrying capacity of the area is 2337 people/day with tourist attractions consisting of mangrove tracking (33 people/day), fishing (137 people/day), picnic (1620 people/day), camping ground (542 people/day) and bird watching (6 people/day). Utilization of area based on suitability and carrying capacity is needed to maintain the sustainability of mangrove ecosystems and the economy of coastal communities.

Abstract. Sukuryadi, Harahab N, Primyastanto M, Hadi AP. 2021. Short Communication: Structure and composition of mangrove vegetation in Lembar bay area, West Lombok District, Indonesia. Biodiversitas 22: 5585-5592. One of the potential natural resources of coastal areas in West Lombok District, West Nusa Tenggara Province, Indonesia is the 501.9-ha mangrove ecosystem. The purpose of this study was to analyze the structure and composition of mangroves in the Lembar bay area. The study used field observation methods based on predetermined plots. The results showed that the composition of mangroves in the Lembar Bay area consisted of Avicennia alba Bl, Avicennia marina (Forsk) Vierh, Bruguiera cylindrica (L) Bl, Ceriop decandra (Griff) Ding Hou, Ceriop tagal (Perr) C.B. Rob, Lumnitzera littorea (Jack) Voight, Lumnitzera racemosa Willd. Var, Phemphis acidula, Rhizhopora stylosa Griff, Rhizophora apiculata Bl, Rhizophora mucronata Lmk, and Sonneratia alba J.E. Smith. The mangrove vegetation at tree level was composed of 12 species dominated by Rhizhopora stylosa Griff and Rhizophora mucronata Lmk, with Importance Value Index (IVI) of 56.05 and 48.89, respectively, at sapling level 9 species dominated by Rhizhopora stylosa Griff, Bruguiera cylindrica, and Rhizophora mucronata, with IVI of 47.46, 33.33, and 31.07 respectively, and at the seedling level 7 species dominated by Rhizhopora stylosa Griff and Rhizophora mucronata Lmk, with IVI of 47.71 and 37.76, respectively.