Biodiversity & Conservation

, Volume 11, Issue 11, pp 1919–1937

Species diversity of longicorn beetles in humid warm-temperate forests: the impact of forest management practices on old-growth forest species in southwestern Japan


  • Kaoru Maeto
  • Shigeho Sato
  • Hiroaki Miyata

DOI: 10.1023/A:1020849012649

Cite this article as:
Maeto, K., Sato, S. & Miyata, H. Biodiversity and Conservation (2002) 11: 1919. doi:10.1023/A:1020849012649


In the humid warm-temperate zone of southwestern Japan, old-growthforests have been seriously fragmented to small remnants due to traditionalagriculture and coppicing as well as recent rapid plantation with conifers.Assemblages of longicorn beetles (Coleoptera: Disteniidae and Cerambycidae) werecompared among old-growth forests, second-growth forests and conifer plantationsusing collision traps baited with chemical attractants. Species richness oflongicorn beetles was poorer in second-growth forests and conifer plantationsthan in old-growth forests. It was proved by multidimensional scaling(MDS) that the beetle assemblages of old-growth forests were distinct from thoseof conifer plantations, while those of second-growth forests were intermediatebetween them. Further analysis showed that a number of species, including manyPidonia spp., were specific to or closely associated withold-growth forests, and the results were largely supported by the indicatorvalue (IndVal) approach. It is likely that many of such old-growth forestspecies in the larval and pupal stages require large broad-leaved trees standingor fallen with thick bark. At the same time, the flower-visiting adults wouldplay an important role in pollinating various herbaceous and woody plants.Regional forest management for the conservation of insect biodiversity is alsodiscussed.

Attractant trapBio-indicatorChronosequenceCoarse woody debrisConifer plantationInsect biodiversityPidoniaPollinatorSaproxylic Coleoptera

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© Kluwer Academic Publishers 2002