Gunggot Evahtira, Beaver Roger A, Lucas Jonathan Jimmey, George Sandra Geogina, Rasiah Anastasia, Wong Wilson V C, Lardizabal Maria Lourdes T, Kamata Naoto
Faculty of Tropical Forestry, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Malaysia.
161/2 Mu 5, Soi Wat Pranon, T. Donkaew, A. Maerim, Chiangmai 50180, Thailand.
Insects. 2025 Jan 26;16(2):121. doi: 10.3390/insects16020121.
Anthropogenic disturbances, such as forest conversion, have a profound impact on species distributions and biodiversity in tropical forests. This study aimed to determine the diversity and distribution of bark and ambrosia beetles (Curculionidae: Scolytinae and Platypodinae) across three forest types: Primary Forest (PF), Disturbed Forest (DF), and Rubber Plantation (RP) in southern Sabah, Malaysia. We analyzed biweekly data obtained from ethanol-baited traps over three years, from April 2017 to May 2020, which included 7257 individuals from 154 species. The dominant species remained the same across all forest types. However, species composition was highly stochastic and unpredictable between forest types. The abundance and number of species were highest in RP but lowest in DF. Indigenous forest use in DF mostly for fuel likely reduced the resources for the beetles. Open canopy structure in RP probably increased the number of flying beetles. Although adjacent to PF, RP displayed a distinct species composition predominantly associated with rubber trees. These findings underscore the anthropogenic impact on beetle assemblages due to forest use and emphasize the need for sustainable forest management practices to prevent biodiversity loss and maintain ecosystem stability.
人为干扰，如森林转变，对热带森林中的物种分布和生物多样性有着深远影响。本研究旨在确定马来西亚沙巴州南部三种森林类型（原始森林（PF）、干扰森林（DF）和橡胶种植园（RP））中树皮甲虫和食菌小蠹（象甲科：小蠹亚科和长小蠹亚科）的多样性和分布。我们分析了2017年4月至2020年5月三年间每两周从乙醇诱饵诱捕器获得的数据，其中包括来自154个物种的7257个个体。所有森林类型中的优势物种保持不变。然而，森林类型之间的物种组成具有高度随机性且不可预测。物种丰富度和数量在橡胶种植园中最高，在干扰森林中最低。干扰森林中主要用于获取燃料的原生林利用方式可能减少了甲虫的资源。橡胶种植园的开阔树冠结构可能增加了飞行甲虫的数量。尽管与原始森林相邻，但橡胶种植园呈现出主要与橡胶树相关的独特物种组成。这些发现强调了森林利用对甲虫群落的人为影响，并强调需要可持续的森林管理实践来防止生物多样性丧失和维持生态系统稳定性。
