Abstract
In August 2002, a heavy rainfall (445 mm in total for 5 consecutive days) resulted in a catastrophic flood, and it completely washed away the benthic fauna from the mainstream channel of the Gapyeong stream, a typical mid-sized stream in the central Korean peninsula. This study was to investigate the recovery patterns of aquatic insect communities that were damaged by the flood. Aquatic insects were sampled quantitatively using a Surber sampler (50 × 50 cm, 1 riffle and 1 pool/run habitats per site) from three sites (4th-6th order) of the Gapyeong stream prior to 2000 and seasonally after the flood event from 2003 to 2006. Before the flood in the reference year (2000), a total of 77 species of aquatic insects were collected, whereas after the flood 47 species (2003), 51 species (2004), 64 species (2005) and 55 species (2006) were collected from the whole sampling sites. The aquatic insect density decreased to 26.85% (2003), 90.25% (2004), 52.53% (2005) and 54.95% (2006) of that recorded in the reference year. Although approximately 70% of the aquatic insect fauna has recovered since the flood event, the species composition in the most recent year differed substantially (similarity ca. 50%). On the other hand, the compositions of functional groups have not significantly changed. Aquatic insect communities at the riffle sites were affected more profoundly than those at the pool/run sites. The aquatic insect communities at the upstream site recovered more rapidly than those at the downstream sites.
| Original language | English |
|---|---|
| Pages (from-to) | 169-177 |
| Number of pages | 9 |
| Journal | Animal Cells and Systems |
| Volume | 15 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2011 Jun 1 |
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Keywords
- Benthic macroinvertebrates
- Community recovery
- Disturbance ecology
- Flood impact
- Gapyeong stream
- Monsoon climate
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Animal Science and Zoology
Cite this
Recovery of aquatic insect communities after a catastrophic flood in a Korean stream. / Lee, Hwang Goo; Bae, Yeon Jae.
In: Animal Cells and Systems, Vol. 15, No. 2, 01.06.2011, p. 169-177.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Recovery of aquatic insect communities after a catastrophic flood in a Korean stream
AU - Lee, Hwang Goo
AU - Bae, Yeon Jae
PY - 2011/6/1
Y1 - 2011/6/1
N2 - In August 2002, a heavy rainfall (445 mm in total for 5 consecutive days) resulted in a catastrophic flood, and it completely washed away the benthic fauna from the mainstream channel of the Gapyeong stream, a typical mid-sized stream in the central Korean peninsula. This study was to investigate the recovery patterns of aquatic insect communities that were damaged by the flood. Aquatic insects were sampled quantitatively using a Surber sampler (50 × 50 cm, 1 riffle and 1 pool/run habitats per site) from three sites (4th-6th order) of the Gapyeong stream prior to 2000 and seasonally after the flood event from 2003 to 2006. Before the flood in the reference year (2000), a total of 77 species of aquatic insects were collected, whereas after the flood 47 species (2003), 51 species (2004), 64 species (2005) and 55 species (2006) were collected from the whole sampling sites. The aquatic insect density decreased to 26.85% (2003), 90.25% (2004), 52.53% (2005) and 54.95% (2006) of that recorded in the reference year. Although approximately 70% of the aquatic insect fauna has recovered since the flood event, the species composition in the most recent year differed substantially (similarity ca. 50%). On the other hand, the compositions of functional groups have not significantly changed. Aquatic insect communities at the riffle sites were affected more profoundly than those at the pool/run sites. The aquatic insect communities at the upstream site recovered more rapidly than those at the downstream sites.
AB - In August 2002, a heavy rainfall (445 mm in total for 5 consecutive days) resulted in a catastrophic flood, and it completely washed away the benthic fauna from the mainstream channel of the Gapyeong stream, a typical mid-sized stream in the central Korean peninsula. This study was to investigate the recovery patterns of aquatic insect communities that were damaged by the flood. Aquatic insects were sampled quantitatively using a Surber sampler (50 × 50 cm, 1 riffle and 1 pool/run habitats per site) from three sites (4th-6th order) of the Gapyeong stream prior to 2000 and seasonally after the flood event from 2003 to 2006. Before the flood in the reference year (2000), a total of 77 species of aquatic insects were collected, whereas after the flood 47 species (2003), 51 species (2004), 64 species (2005) and 55 species (2006) were collected from the whole sampling sites. The aquatic insect density decreased to 26.85% (2003), 90.25% (2004), 52.53% (2005) and 54.95% (2006) of that recorded in the reference year. Although approximately 70% of the aquatic insect fauna has recovered since the flood event, the species composition in the most recent year differed substantially (similarity ca. 50%). On the other hand, the compositions of functional groups have not significantly changed. Aquatic insect communities at the riffle sites were affected more profoundly than those at the pool/run sites. The aquatic insect communities at the upstream site recovered more rapidly than those at the downstream sites.
KW - Benthic macroinvertebrates
KW - Community recovery
KW - Disturbance ecology
KW - Flood impact
KW - Gapyeong stream
KW - Monsoon climate
UR - http://www.scopus.com/inward/record.url?scp=79958838814&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79958838814&partnerID=8YFLogxK
U2 - 10.1080/19768354.2011.555121
DO - 10.1080/19768354.2011.555121
M3 - Article
AN - SCOPUS:79958838814
VL - 15
SP - 169
EP - 177
JO - Animal Cells and Systems
JF - Animal Cells and Systems
SN - 1976-8354
IS - 2
ER -