Toshinori Takashiba

• Biodiversity Journal, 16 (2): 259-269

  Yoshihiro Senda, Toshinori Takashiba, Jôji Enok & Shingo Nakamura
  Seven years fixed-point observation of nocturnal moths by light-trap in western Honshu, Japan: dataset description, assemblage characterization, and consideration of the period required for elucidating fauna
  https://doi.org/10.31396/Biodiv.Jour.2025.16.2.259.269

  ABSTRACT
  Elucidating the insect fauna of a specific area presents often a challenging task, necessitating thorough surveys that account for seasonal fluctuations and other pertinent factors. To efficiently outline the local insect fauna, it is imperative to amass information regarding the necessary survey effort in diverse regions and environments. In this study, we have conducted analyses of diversity and phenology using the collected data which is gathered from 55,834 individuals of 1,156 species over seven years of fixed-point observation since 2015. Additionally, we have contemplated the requisite survey effort to comprehend the moth fauna in agroecosystems within the hilly and mountainous regions of western Honshu. Dominant species assemblages of each year were significantly divided into two main groups through clustering analysis using the Bray-Curtis index. Based on the ACE and Chao 1 estimators, approximately 1,200 species could potentially be found in this area. An analysis of the data revealed that conducting a survey from March to December for five years would likely encompass approximately 90% of the species present. This occurrence data has been compiled into a Darwin Core dataset, and a dataset description is provided in this paper.

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