2024-03-28T09:15:20Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00020484
2022-12-14T04:27:03Z
1309:1310
Distribution of benthic insects in a riffle/pool section of the middle reaches of the Shinano River, Japan, with emphasis on Trichoptera
Inoue, Eiso
Kimura, Goro
Hirabayashi, Kimio
© 2011 by the Japanese Society of Environmental Entomology and Zoology
Rivers
Benthic macroinvertebrates
Distribution
Riffle/pool gradient
We investigated the density and taxonomic composition of benthic insects in a 300 m section of riffle / pool habitat in the Shinano River, Japan. The most abundant taxa were Chironomidae, followed by Trichoptera. The total density of caddisflies and their contribution to the total density of benthic insects ranged from 56 to 21,744 (mean 11,644) ind. m-2 and from 2.6 to 44.6 (mean 29.4) %, respectively. We conducted a canonical correspondence analysis using current velocity, depth, and the ash-free dry mass of epilithon as the main factors. Benthic insect assemblages were significantly associated with the longitudinal gradient of the riffle/ pool structure. Stenopsyche marmorata and hydropsychid species were abundant in the riffles whereas Psychomyia acutipennis were abundant in the pools.
Article
環動昆.22(1):17-22(2011)
日本環境動物昆虫学会
2011
eng
journal article
VoR
http://hdl.handle.net/10091/00021242
https://soar-ir.repo.nii.ac.jp/records/20484
0915-4698
AN10186037
環動昆
22
1
17
22
https://soar-ir.repo.nii.ac.jp/record/20484/files/26460796_x16.pdf
application/pdf
1.1 MB
2019-02-22