본 연구는 대전천과 유등천의 하천변에 서식하는 육상곤충을 이용해 하천정비공사가 인근 생물에 끼치는 영향을 알아보기 위한 것으로 2008년 4월부터 10월까지 총 7회에 걸쳐 조사를 수행하고 그 결과를 분석하였다. 조사기간 동안 출현한 곤충은 총 10목 110과 428종으로 대전천에서 조사된 곤충은 11목 99과 335종, 유등천에서 조사된 곤충은 11목 98과 350종이었다. 대전천은 D-1지점과 D-2지점에서 178종이 출현하여 가장 많은 종수가 확인되었고, 유등천은 Y-1지점에서 179종이 출현하여 가장 많은 종수가 확인되었다. 유사도 지수를 근거로 각 지점별 클러스터 분석을 실시해본 결과, 하천정비공사가 진행되지 않은 지역(A그룹)과 하천정비공사가 진행된 도심관통 지역(B그룹)으로 그룹화 되었다. 또한 A그룹에서도 각 조사지점이 대전천(A-1그룹)과 유등천(A-2그룹)으로 나뉘어 하천의 지역적 차별성에 따른 곤충의 출현이 상대적임을 알 수 있었다.
본 연구는 대전천과 유등천의 하천변에 서식하는 육상곤충을 이용해 하천정비공사가 인근 생물에 끼치는 영향을 알아보기 위한 것으로 2008년 4월부터 10월까지 총 7회에 걸쳐 조사를 수행하고 그 결과를 분석하였다. 조사기간 동안 출현한 곤충은 총 10목 110과 428종으로 대전천에서 조사된 곤충은 11목 99과 335종, 유등천에서 조사된 곤충은 11목 98과 350종이었다. 대전천은 D-1지점과 D-2지점에서 178종이 출현하여 가장 많은 종수가 확인되었고, 유등천은 Y-1지점에서 179종이 출현하여 가장 많은 종수가 확인되었다. 유사도 지수를 근거로 각 지점별 클러스터 분석을 실시해본 결과, 하천정비공사가 진행되지 않은 지역(A그룹)과 하천정비공사가 진행된 도심관통 지역(B그룹)으로 그룹화 되었다. 또한 A그룹에서도 각 조사지점이 대전천(A-1그룹)과 유등천(A-2그룹)으로 나뉘어 하천의 지역적 차별성에 따른 곤충의 출현이 상대적임을 알 수 있었다.
This study was conducted to identify the impact of river improvement efforts by studying terrestrial insects inhabiting at streamside locations at the Daejeon and Yudeung streams. Seven surveys were conducted from April to October on 2008 and the results were analyzed. Totally 428 species of 110 fam...
This study was conducted to identify the impact of river improvement efforts by studying terrestrial insects inhabiting at streamside locations at the Daejeon and Yudeung streams. Seven surveys were conducted from April to October on 2008 and the results were analyzed. Totally 428 species of 110 families belonging to 11 orders of insects were investigated during the course of the present study. The insects identified at the Daejeon stream belonged to 335 species, 99 families and 11 orders, while those at the Yudeung stream were of 350 species, with 98 families and 11 orders. At the Daejeon stream, D-1 and D-2 points were the sites where the most species(178 species) were identified, while at the Yudeung stream, the Y-1 point was the site where the most species(179 species) emerged. In a cluster analysis based on a similarity index, Group A(without river improvement works) and Group B(downtown passing area with river improvement works) were created. Within Group A, survey points were classified as the Daejeon stream group(the A-1 Group) and the Yudeung stream group(the A-2 Group). It was found that the emergence patterns of insects were related to regional characteristics of the streams.
This study was conducted to identify the impact of river improvement efforts by studying terrestrial insects inhabiting at streamside locations at the Daejeon and Yudeung streams. Seven surveys were conducted from April to October on 2008 and the results were analyzed. Totally 428 species of 110 families belonging to 11 orders of insects were investigated during the course of the present study. The insects identified at the Daejeon stream belonged to 335 species, 99 families and 11 orders, while those at the Yudeung stream were of 350 species, with 98 families and 11 orders. At the Daejeon stream, D-1 and D-2 points were the sites where the most species(178 species) were identified, while at the Yudeung stream, the Y-1 point was the site where the most species(179 species) emerged. In a cluster analysis based on a similarity index, Group A(without river improvement works) and Group B(downtown passing area with river improvement works) were created. Within Group A, survey points were classified as the Daejeon stream group(the A-1 Group) and the Yudeung stream group(the A-2 Group). It was found that the emergence patterns of insects were related to regional characteristics of the streams.
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문제 정의
At the lower stream area, there are artificial facilities such as houses, riverbed roads, bicycle roads and sports facilities, similar to the Daejeon stream. The purpose of this study was to identify differences in the community structure of the terrestrial insects living at the streamside of the Daejeon stream and the Yudeung stream and the ecological differences between the natural stream and artificial stream environments. The results of this study can be used as basic materials for long-term monitoring and to identify problems and create solutions during streamside improvement projects
제안 방법
For the purpose of this study, quantitative surveys were performed once a month from April to October of 2008. To investigate ground beetles, bait traps were used, while sweeping was used to investigate the insects perched on grass, shrubs or trees as well as those flying.
대상 데이터
06%). The insects collected by sweeping contained 275 species, with 81 families and 9 orders. Out of them, Hemiptera was the most diversely identified order, with 58 species and 15 families(21.
데이터처리
To verify the differences between groups, a T-test was performed. Additionally, a Pearson analysis was executed to identify the correlations between the induced factors. For the statistical analysis, SPSS ver.
The similarity Index by Bray and Curtis(1957) was calculated regarding the number of species and the number of individuals at each point, and a weighted average combination method was used to build a dendrogram. To verify the differences between groups, a T-test was performed. Additionally, a Pearson analysis was executed to identify the correlations between the induced factors.
이론/모형
An insect list was formulated based on the Checklist of Insects from Korea(1994). Diversity index was calculated using the Shannon-Weaver function (Pielou, 1969), which was influenced by the information theory of Margalef(1958). The similarity Index by Bray and Curtis(1957) was calculated regarding the number of species and the number of individuals at each point, and a weighted average combination method was used to build a dendrogram.
성능/효과
(2002) reported 316 species at the Choyang river and Dong river, which are located respectively in Pyeongchang province and Jeongseon province. Although these studies investigated different areas and at different times compared to this study, Coleoptera was the most diverse order in all of the studies, demonstrating that Coleoptera is a very common order at streamside locations. In particular, Cerambycidae was found to habituate in damp and dark areas under rocks or in trees, whereas Chrysomelidae habituated in wide grass fields at stream side locations, accounting for the high density.
At the Daejeon stream, 178 species, 72 families and 11 orders were collected at the D-1 point; 178 species, 66 families and 11 orders at D-2; 157 species, 53 families and 8 orders at D-3; 146 species, 57 families and 10 orders at D-4; 159 species, 62 families and 9 orders at D-5 point; and 143 species, 58 families and 9 orders at D-6(Table 3). At D-1 and D-2, the most species were identified, at 178 species, while D-6 was the point at which the lowest number of species was identified.
Those factors as a whole may cause the low density of insects. At the Yudeung stream, 160 species, 61 families and 11 orders were identified, at Y-1; 179 species, 65 families and 9 orders at Y-2; 144 species, 51 families and 9 orders at Y-3; 118 species, 53 families and 9 orders at Y-4; 167 species, 65 families and 10 orders at Y-5; 145 species, 54 families and 10 orders at Y-6; 142 species, 59 families and 10 orders at Y-7; 102 species, 48 families and 9 orders at Y-8; 116 species, 52 families and 9 orders at Y-9; and 108 species, 51 families and 9 orders at Y-10(Table 3). Y-2 showed the most species, at 179, and Y-8 showed the fewest species, at 102.
At the Yudeung stream, 350 species, 98 families and 11 orders were identified. Out of them, Coleoptera was the highest, with 113 species and 25 families(32.29%), and the next most common orders were Hemiptera with 61 species and 17 families (17.43%), Hymenoptera with 47 species and 7 families(13.43%), Diptera with 38 species and 17 families(10.86%), Orthoptera with 33 species and 9 families(9.43%), Lepidoptera with 25 species and 7 families(7.14%), Homoptera with 16 species and 9 families (4.57%), Odonata with 12 species and 4 families(3.43%), and Mantodea with 3 species and 1 family(0.86%). The least common orders were Blattaria and Dermaptera with 1 species and 1 family(0.
The insects collected by sweeping contained 275 species, with 81 families and 9 orders. Out of them, Hemiptera was the most diversely identified order, with 58 species and 15 families(21.09%), followed by Coleoptera with 54 species and 1 family(19.64%), Hymenoptera with 42 species and 7 families(15.27%), Diptera with 38 species and 17 families(13.82%), Orthoptera with 27 species and 7 families(9.82%), Lepidoptera with 25 species and 7 families(9.09%), Homoptera with 16 species and 9 families(5.82%), Odonata with 12 species and 4 families(4.36%), and Mantodea with 3 species and 1 family(1.09%) in that order(Figure 3).
The insects collected by bait traps belonged to 94 species, 29 families and 6 orders. The most diversely identified order was Coleoptera with 66 species and 18 families(70.21%), followed by Hemiptera with 9 species and 5 families(9.57%), Hymenoptera with 9 species and 1 family(9.57%), Orthoptera with 8 species and 4 families(8.51%), and Dermaptera and Blattaria with 1 species and 1 family each(1.06%). The insects collected by sweeping contained 275 species, with 81 families and 9 orders.
86%). The order of diversity was Orthoptera with 12 species and 6 families(12.37%), followed by Hymenoptera with 10 species and 1 family(10.31%), Hemiptera with 9 species and 5 families(9.28%), Dermaptera with 4 species and 3 families(4.12%), and Blattaria with 2 species and 1 family(2.06%). The insects collected by sweeping belonged to 281 species, with 85 families and 9 orders.
When a T-test was executed to verify the differences in the averages of the groups classified by the cluster analysis, it satisfied the normality and homoscedasticity measures, though a statistical difference was noted in the number of species(P=0.018) and the species richness index(P=0.012). In the correlation analysis to identify the relationship between the number of species and the habitat type, it was found that both the number of species (r=-0.
584. Y-9 and Y-7 with the highest dominance index had 1,559 and 753 individuals of Tetramorium caespitum, which is the dominant species, which increased the dominance index. On the other hand, those points showed the lowest evenness index owing to the high proportion of the dominant species.
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