基隆河及景美溪水棲昆蟲生態及水棲甲蟲之分類研究(II)
Date Issued
2001
Date
2001
Author(s)
楊平世
DOI
892313B002225
Abstract
Ordination technique is always needed
in community structure studies of stream
ecology, which contain large amount data of
taxa, in order to evaluate the temporal and
spatial variations of community structures.
This study present the results of aquatic
insects fauna and related ecological studies
conducted at 5 sampling sites in the upper
Keelung River, Taiwan, from Aug., 2000 to
Jul., 2001. The environmental factors and
the aquatic insect composition were
investigated to define the relationship
between aquatic insect community structure
and environmental parameters by using
multi-dimensional scaling (MDS) instead of
principal component analysis (PCA)
ordination technique. The analysis of
one-way ANOVA indicated that most of
aquatic insect parameters and environmental
parameters were significant affected by site,
but not by season. Several environmental
variables, included conductivity, turbidity,
and the concentrations of phosphate and
ammonia, were significantly correlated with
the aquatic insect taxa richness and diversity
index(p<0.05). Biotic indices showed that
the environmental situations were
significantly worsen from upstream
sampling sites to downstream sites. The
results also indicated that shows difference
3
between 2-D dimensional scaling
distributions from different identification
levels (genus-species level, family level, and
order level) was slight evident. Ten taxa of
8 families, belonging to 4 orders, were
identified to be the key species constitute the
profile of aqatic insect community structures
of the Keelung River. Time serial changes
of aquatic insect community structures
within each sampling site were also
presented as a base of .future researches on
the effects of spates and engineering work
alongside the river on the communities and
their recovery progresses. As to the
taxonomic study on aquatic water beetles,
three papers were completed and published
or submitted on foreign journals and book,
which including a synopsis of aquatic
fireflies with a description of a new species,
revision of the Genus Diaphanes of Taiwan,
and notes on the taxonomy of Lamprigera
yunnana and the genus Lamprigera.
Subjects
Aquqtic insects
Multidimensional
scaling
scaling
Community structure
Biotic indices
Lampyridae
Psephenidae
Taxonomy
new species
Publisher
臺北市：國立臺灣大學昆蟲學系暨研究所
Type
report
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