埼玉県立自然史博物館研究報告 第12号 (1994)
日光男体山におけるカマアシムシ類の垂直分布
中村 修美
埼玉県立自然史博物館 369−13 埼玉県秩父郡長瀞町長瀞1417−1
石井 清
濁協医科大学生物学教室 321−02 栃木県下都賀郡壬生町北小林880
要 旨 日光男体山の北東斜面で標高1750mから山頂（2480m）にかけて，カマアシムシ群集の垂直分布を調査した．山頂のダケカンバ林では種数・個体数ともに他の地点より極めて貧弱であった．また，5地点の種構成の類似性についてクラスター分析をした結果，標高2000m以下のA・Bの地点とそれより高所に位置するC・D1・D2の地点の2つのグループに大別されることが分かった．
キーワード：日光男体山，カマアシムシ群集，垂直分布．
Table 1. Proturan species compositions at 5 sites on Mt. Nantai
Site surveyed
Altitude (m) | A
1750 | B
2000 | C
2250 | D11)
2480 | D21)
2480 |
|
Verrucoentomon shirampa | 37 | 169 | | | |
|
Kenyentulus japonicus | 2 | 2 | | | |
|
Baculentulus morikawai | 18 | 17 | 1 | 6 | |
|
B. densus | | 1 | 44 | 52 | 8 |
|
Filientomon takanawanum | | | | 24 | |
|
Nipponentomon uenoi paucisetosum | | 8 | | 6 | |
|
Eosentomon asahi | 20 | | | 30 | |
|
E. udagawai | 7 | 6 | | 26 | |
|
E. sp. | | 2 | | 2 | |
|
No. of individuals | 84 | 205 | 45 | 146 | 8 |
|
No. of species | 5 | 7 | 2 | 7 | 1 |
|
H'2) | 1.917 | 1.027 | 0.154 | 2.334 | 0 |
|
J'3) | 0.826 | 0.366 | 0.154 | 0.832 | 0 |
1) Number of individuals is per 10 samples.
2) Shannon-Weaver's index of species diversity (H'= -Σ Pi・log2Pi)
3) Pielou's evenness component diversity (J'=H'/log2S)
|
|
Vertical Distribution of Protura on Mt. Nantai
at Nikko, Central Japan
NAKAMURA, Osami
Saitama Museum of Natural History, Nagatoro 1417, Chichibu-gun, Saitama 369-13, Japan
and
ISHII, Kiyoshi
Department of Biology, Dokkyo University School of Medicine, Mibu-machi, Tochigi 321-02, Japan
Abstract
Proturan community was investigated at 5 stations of different elevations along the northeast slope of Mt. Nantai at Nikko, central Japan in early winter of 1983. The numbers of species and individuals of proturans in the Betula ermani forest (D2) were less than those of other stations. Species composition among 5 stations were divided into 2 groups by a dendrogram analysis. One is composed of 2 stations (A and B) of 2000 m altitude and less. The other is composed of 3 stations (C, D1 and D2) of higher elevations than 2000 m.
Key words : Mt. Nantai, Protura, vertical distribution.