| Summary: | 碩士 === 國立臺灣師範大學 === 生物學系 === 84 === This study was conducted from January 1995 to April 1996,
at Jin-Gua-Liao creek of Taipei County and Ha-Pan Stream of I-
Lan County. The main purpose ofthis research was investigated
the resource partitioning among sympatric frogsof two
communities in streams. We also monitored the species and
populationsuccession in each community.
During the research period, we discovered twelve species of
frog, including Bufo bankorensis, Buergeria robustus, Buergeria
japonicus, Chirixalus diootocus,idiootocus, Rhachophorus
taipeianus, Rana kuhlii, Rana sauteri, Rana narinaswinhoana,
Rana latouchi, Rana limnocharis, Rana adenopleura and Rana
guentheri. The bed rocks, canopy coverage and other
environmental factors will affect thespecies composition of the
community. Frogs in streams can be separated intotwo groups, i.
e., lotic group and terrestrial one, base on their
habitatpreferences. Results of niche breath and niche overlap
showed that Buergeriarobustus in the downstream site of Jin-Gua-
Liao creek has the widest niche of habitat usage (0.4). Bufo
bankorensis in the upstream of Jin-Gua-Liao creek has the
widest niche in temporal aspect (0.45). Buergeria robustus in
theJin-Gua-Liao creek has the widest niche on food (0.24). The
greatest nicheoverlap was seen between Rana latouchi and Rana
adenopleura of Ha-Pan stream in habitat usage (0.95). Bufo
bankorensis and Rana narina swinhoana has thegreatest niche
overlap in temporal aspect (0.84). The greatest niche overlap
was seen between Rana sauteri and Buergeria robustus of Jin-
Gua-Liao creek in diet (0.87).
The data showed that the species of frogs in the stream varies
with seasons. Buergeria robustus primarily appeared in spring
and summer. Bufo bankorensis and Rana sauteri were rarely seen
in steams during the winter.
|
|---|
