Aureo Wilbert A, Reyes Tomas D, Mutia Francis Carlo U, Jose Reizl P, Sarnowski Mary Beth
Department of Forestry and Environmental Sciences, College of Agriculture and Natural Resources, Bohol Island State University, Bohol, Philippines Department of Forestry and Environmental Sciences, College of Agriculture and Natural Resources, Bohol Island State University Bohol Philippines.
Central Visayas Biodiversity Assessment and Conservation Program, Research and Development Office, Bohol Island State University, Bohol, Philippines Central Visayas Biodiversity Assessment and Conservation Program, Research and Development Office, Bohol Island State University Bohol Philippines.
Biodivers Data J. 2020 Dec 29;8:e55790. doi: 10.3897/BDJ.8.e55790. eCollection 2020.
Rajah Sikatuna Protected Landscape (RSPL), considered the last frontier within the Central Visayas region, is an ideal location for flora and fauna research due to its rich biodiversity. This recent study was conducted to determine the plant species composition and diversity and to select priority areas for conservation to update management strategy. A field survey was carried out in fifteen (15) 20 m x 100 m nested plots established randomly in the forest over limestone of RSPL from July to October 2019. Three hundred and sixty eight (368) species of plants were identified up to species level. This represented 327 angiosperms, one gymnosperm and 40 pteridophytes. Common plant families with more than 10 representative species were Moraceae, Meliaceae, Lauraceae, Dipterocarpaceae, Rubiaceae, Myrtaceae, Phyllanthaceae, Annonaceae, Araceae and Lauraceae. There were 93 (28%) endemic and 46 (14%) threatened species (vulnerable to critically endangered) observed. The cluster analysis and species accumulation curve suggests that plant species are not homogeneously distributed which implies that different management and conservation strategies should be implemented across RSPL. These results not only indicate the importance of RSPL, but also highlights areas with higher diversity and concentration of threatened and endemic species as a special area of concern. Furthermore, areas with high biodiversity value were recommended for immediate protection, while areas with low biodiversity value were recommended for reforestation programmes using species with high importance value.
拉贾·西卡图纳自然保护区（RSPL）被认为是中米沙鄢地区的最后一片未开发区域，因其丰富的生物多样性，是进行动植物研究的理想地点。最近开展的这项研究旨在确定植物物种组成和多样性，并选择优先保护区域以更新管理策略。2019年7月至10月，在拉贾·西卡图纳自然保护区内石灰岩森林中随机设立的15个20米×100米的嵌套样地进行了实地调查。共鉴定出368种植物，其中包括327种被子植物、1种裸子植物和40种蕨类植物。拥有超过10个代表性物种的常见植物科有桑科、楝科、樟科、龙脑香科、茜草科、桃金娘科、叶下珠科、番荔枝科、天南星科和樟科。观察到93种（28%）特有物种和46种（14%）受威胁物种（从易危到极度濒危）。聚类分析和物种累积曲线表明，植物物种分布不均匀，这意味着应在拉贾·西卡图纳自然保护区实施不同的管理和保护策略。这些结果不仅表明了拉贾·西卡图纳自然保护区的重要性，还突出了具有较高多样性以及受威胁和特有物种集中的区域，将其作为特别关注的区域。此外，建议立即保护生物多样性价值高的区域，而生物多样性价值低的区域则建议采用具有高重要值的物种进行造林计划。
