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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.37, no.1, 2004³â, pp.87-95
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Àú¼¼º ´ëÇü¹«Ã´Ãßµ¿¹°ÀÇ ÀÚ¿¬Àû ±³¶õ¿¡ ´ëÇÑ ¿µÇâ
( The Effects of Natural Disturbances on Benthic Macro-invertebrate ) |
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| Community dynamics of benthic macroinvertebrates in response to natural disturbances (flooding and water temperature) were investigated in the Suyong and Soktae Streams in Busan from October 1997 to September 1998. Oigochaeta and Chironomus, organic polluted indicators, were dominant and various taxa were observed at the study sites. The density and biomass of two dominant taxa increased in warm months while the indicators were washed away in the flooding season. From October to February when the water temperature was less than $15^{circ}C$, Oligochaeta appeared to be dominant at the Soktae Stream. In contrast various taxa were collected at the Suyong stream. The densities of Oligochaeta and Chironomus increased at the Soktae and the Suyong streams in March. Due to the big flooding in April, the density of dominant taxa decreased abruptly. The community structure showed differences patterns in the flooding season at two streams from June to August. In the Soktae stream, the density increased in August. The reverse patterns were observed in the Suyong stream, washing out in June followed by slow recovery of densities in the fellowing months. Density and biomass showed relatively higher correlations in most taxa. CCA (Canonocial Correspondence Analysis) showed that taxa was different response to different environmental factors. |
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| Ű¿öµå |
| biomass;community dynamics;flooding;water temperature; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.37, no.1, 2004³â, pp.87-95
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200418317182441)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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