| Summary: | 碩士 === 國立師範大學 === 生物學研究所 === 82 === The resource partitioning of frog community in a small still
water pond werestudied from October,1992 to March ,1994 at Tatung
Shan Area near Feitsui Dam in northern of Taiwan .
There were 12 species in 5 families of frogs were recorded
during the research period. Because very few of the datas, Rana
narian swinhoana and Rana limnocharis limnocharis were excluded
form this study. The other 10 species were clustered by cluster
analysis, base on the microhabitat they used. There were 3 groups
in this community.Rhacophorus smaragdinus,Polypedates
megacephalus , Chirixxalus idiootocus, Hyla chinensis and
Rhacophorus taipeianus in one group, I called them tree dwelling
group. Rana latouchii, Rana adenopleura, Rana longicrus, Bufo
bufo gargarizans in one group, I called them Land dwelling
group. The special one is Microhyla ornata, it in one group by
itself. The majority microhabitat Microhyla ornata chose was
grass land. The result of Principle omponent Analysis(PCA) showed
that the tree dwelling group relyed on tree, the water attaracted
the land dwelling group. The activity area of MIcrohyla ornata
was most far away from pond.
In tree dwelling group, the perched height of Hyla chinensis
and Rhacophorus smaragdinus were different with the other 3
species. Rhacophorus smaragdinus appeared all over the year,
the peak of activity falled on March to April and September to
October. Rhacophorus taipeianus appeared in winter. Hyla
chinensis, Polypedates megacephalus and Chirixalus idiootocus
appeared from March to August, the peak was seperated with
Rhacophorus smaragdinus. Rhacophorus smaragdinus and Polypedates
megacephalus laied their egg mass on the tree, the Rhacophorus
taipeianus laied its egg mass on the hole of ground.
In land dwelling species, Rana latouchii , Rana longicrus
and Bufo bufo gargarizans activity in winter, Rana adenopleura
appeared in summer. Different with the other, Rana latouchii make
its egg attached on the fallen leaves in the water. Mycohyla
ornata also appeared from March to August.
There were no obviously difference in food habit of these
frogs. The empty stomach easly found on tree dwelling species and
they didn't choose the food only living on the ground. Bufo bufo
gargarizans was most complicated in choosing food . Micohyla
ornata prefered ants.
The average breadth of Niche on microhabitate , time and
food dimensions , Rhacophorus smaragdinus was heighest in tree
dwelling group(3.27), Rana latouchii was heighest in land
dwelling group(5.56), Microhyla ornata located in the middle
(4.56). The degree of intragroup Nich overlap was heigher than
itergroup.
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