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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.36, no.1, 2003³â, pp.19-21
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°æ±âµµ °¡ÆòõÀÇ Çϼø¿¡ µû¸¥ ¼ö¼°ïÃæ ±ºÁýÁ¶¼º°ú ¼·½Ä±â´É±º
( Community Composition and Functional Feeding Groups of Aquatic Insects According to Stream Order from the Gapyeong Creek in Gyeonggi-do, Korea ) |
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| Çѱ¹ÀÇ ÀüÇüÀûÀÎ Áß±Ô¸ðÀÇ ÇÏõÀÎ °æ±âµµ °¡Æòõ¿¡¼ 2000³â 4¿ù¿¡ Çϼø¿¡ µû¸¥ ¼ö¼°ïÃæÀÇ ±ºÁýÁ¶¼º°ú ¼·½Ä±â´É±ºÀ» Á¶»çÇÏ¿´´Ù. ¾ß¿ÜÁ¶»ç¸¦ À§ÇÏ¿© Çϼø II~VII¿¡ ÇØ´çÇÏ´Â ÇÏõÀÇ º»·ù¿Í 3°³ÀÇ ÁÖ¿ä Áö·ù¸¦ ¼Ò±¸¿ª(¾à 1~4 km °Å¸®¿¡ ÇØ´ç)À¸·Î ³ª´©¾î Surber sampler (50¡¿50 cm, ¸Á¸ñ 0.75 mm)¸¦ »ç¿ëÇÏ¿© ¼Ò±¸¿ª´ç 1~2ÁöÁ¡ (ÃÑ 30ÁöÁ¡)À» äÁýÇÏ¿´´Ù. Á¤·®Ã¤Áý (ÁöÁ¡´ç 2ȸ¡¿30ÁöÁ¡ = ÃÑ 60ȸÀÇ Surber sampling; ±Þ·ù´ë 1ȸ, ä¼ö´ë/¿Ï·ù´ë 1ȸ äÁý) ¹× Ãß°¡·Î ½Ç½ÃÇÑ Á¤¼ºÃ¤ÁýÀÇ °á°ú·Î¼ °¡Æòõ¿¡¼ äÁýµÈ ¼ö¼°ïÃæÀº ÃÑ 8¸ñ 54°ú 103¼Ó 164Á¾À̾úÀ¸¸ç, ³¯µµ·¡¸ñ (56Á¾: 34.1%), ÇÏ·ç»ìÀ̸ñ (43Á¾:26.2%), ÆÄ¸®¸ñ (25Á¾: 15.2%), °µµ·¡¸ñ (23Á¾: 14.0%), µüÁ¤¹ú·¹¸ñ(6Á¾: 3.7%), ³ë¸°Àç¸ñ (3Á¾: 1.8%), ±×¸®°í ¹ìÀáÀÚ¸®¸ñ (2Á¾: 1.2%)ÀÌ Æ÷ÇԵǾú´Ù. ÇÏ·ç»ìÀÌ-°µµ·¡-³¯µµ·¡±º (EPT-group) (122Á¾: 74.4%) ¶Ç´Â EPT-group°ú ÆÄ¸®¸ñÀÇ ÇÕ(147Á¾: 89.6%)ÀÌ Àüü ¼ö¼°ïÃæ ±ºÁýÀÇ °ÅÀÇ ´ëºÎºÐÀ» Â÷ÁöÇÏ¿´°í, ÇÏõÀÇ Áß·ùÀ¯¿ª(Çϼø III~VI)¿¡¼ ´õ¿í ¸¹Àº ¼öÀÇ ¼ö¼°ïÃæ Á¾ÀÌ ÃâÇöÇÏ¿´´Ù. ÇÏõÀÇ Àüü Á¶»çÁöÁ¡¿¡¼ Á¤·®Ã¤Áý¿¡ÀÇÇÏ¿© äÁýµÈ ¼ö¼°ïÃæÀÇ °³Ã¼¼ö´Â ÃÑ 26,286°³Ã¼(136~2522°³Ã¼/0.5 m©÷, vudrbs 906.4°³Ã¼/0.5 m©÷)·Î¼ ÇÏ·ç»ìÀ̸ñ (11,994°³Ã¼: 45.6%), ÆÄ¸®¸ñ(8730°³Ã¼: 33.2%), ³¯µµ·¡¸ñ (4123°³Ã¼: 15.7%), °µµ·¡¸ñ(1213°³Ã¼: 4.6%), µüÁ¤¹ú·¹¸ñ(204°³Ã¼: 0.8%), ÀáÀÚ¸®¸ñ(13°³Ã¼: 0.05%), ¹ìÀáÀÚ¸®¸ñ(5°³Ã¼: 0.02%), ±×¸®°í ³ë¸°Àç¸ñ(4°³Ã¼: 0.02%)ÀÌ Æ÷ÇԵǾú´Ù. ÇϼøÀÌ Áõ°¡ÇÒ¼ö·Ï Æò±Õ ¼ö¼°ïÃæ °³Ã¼¼ö´Â Áõ°¡ÇÏ¿´°í, °µµ·¡¸ñÀÇ °³Ã¼¼ö´Â °¨¼ÒÇÏ¿´À¸¸ç, ³¯µµ·¡¸ñÀÇ °³Ã¼¼ö´Â Áõ°¡ÇÏ¿´´Ù. À¯±â¹°¿À¿°ÀÇ ³»¼ºÁ¾ÀÎ ±òµû±¸·ù, µîÁÙÇÏ·ç»ìÀÌ, ÁÙ³¯µµ·¡·ù´Â ÇÏõÀÇ ÇÏ·ùÀ¯¿ª(Çϼø II)¿¡¼ ƯÈ÷ dzºÎÇÏ¿´´Ù. ÇÏõÀÇ Áß·ùÀ¯¿ª (Çϼø IV~VI)¿¡¼ Á¾´Ù¾çµµÁö¼ö(H'')´Â »ó´ëÀûÀ¸·Î ³ô¾Ò°í, ¿ìÁ¡µµÁö¼ö´Â(DI)´Â »ó´ëÀûÀ¸·Î ³·¾Ò´Ù. ¼·½Ä±â´É±º Áß¿¡¼ ½á´Â ¹«¸®°¡ °¡Àå ÀûÀº ºÎºÐÀ» Â÷ÁöÇÏ¿´°í, ÁÝ´Â ¹«¸®´Â °¡ÀådzºÎÇÏ¿´´Ù. °Å¸£´Â ¹«¸®´Â ÇÏ·ùÀ¯¿ª(Çϼø VI°ú VII)¿¡¼ ÇöÀúÈ÷ Áõ°¡ÇÏ¿´°í, ±Ü´Â ¹«¸®´Â ÇÏõÀÇ ÀüÀ¯¿ª¿¡ °ÉÃÄ °í¸£°Ô ºÐÆ÷ÇÏ¿´À¸¸ç, Àâ¾Æ¸Ô´Â ¹«¸®´Â ÇÏõÀÇ ÃÖ»ó·ùÀ¯¿ª(Çϼø II)¿¡¼ ƯÈ÷ dzºÎÇÏ¿´´Ù. Àü¹ÝÀûÀ¸·Î º¼ ¶§ ±Ý¹ø¿¡ °¡Æòõ¿¡¼ Á¶»çµÈ ¼ö¼°ïÃæÀÇ ±ºÁýÁ¶¼º°ú ¼·½Ä±â´É±ºÀº ºÏ¹Ý±¸ ¿Â´ë³«¿±¼ö¸²´ëÀÇ ÀϹÝÀû ÇÏõÀÇ Æ¯¼º(ÇÏõ¿¬¼Ó¼ºÀÇ °³³ä¿¡¼ ¼³¸í)°ú ¸¹Àº ºÎºÐ À¯»çÇÏ¿´´Ù. |
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| Community composition and functional feeding groups of aquatic insects according to stream order were investigated from the Gapyeong Creek, a typical mid-sized Korean stream in Gyeonggi-do, Korea, in April 2000. For field investigations, the main watercourse and three major tributaries of the stream that belong to stream order II to VII were divided into reaches (ca. 1~4 km is distance). Aquatic insects were sampled from one or two sites each reach (total 30 sites) using a Surber sampler (50¡¿50 cm, mesh 0.75 mm). As a result of the quantitative samplings (two Surber samplings at riffle and pool/run per site; total 2¡¿30 = 60 Surber samplings) and additional qualitative samplings, a total of 164 species of aquatic insects in 103 genera, 54 families, and 8 orders were collected from the stream. Those aquatic insects were composed of Trichoptera (56 spp.:34.1%), Ephemeroptera (43 spp.:26.2%), Diptera (25 spp.:15.2%), Plecoptera (23 spp.: 14.9%), Coleoptera (6 spp.:3.7%), Odonata (6 spp.:3.7%), Hemiptera (3 spp.: 1.8%), and Megaloptera (2 spp.: 1.2%); EPT-group (122 spp.:74.4%) or EPT-group plus Diptera (147 spp.:89.6%) occupied most of the aquatic insect community; relatively larger number of species occurred in the mid-stream reaches (order III-VI). The quantitative samplings throughout the study sites yielded a total of 26,286 individuals of aquatic insects (136~2522 inds./o.5 m©÷, mean 906.4 inds./0.5 m©÷) that belongs to Ephemeroptera (11,994 inds.: 45.6%), Diptera (8730 inds.: 33.2%), Trichoptera (4123 inds.: 15.7%), Plecoptera (1213 inds.: 4.6%), Coleoptera (204 inds.: 0.8%), Odonata (13 inds.: 0.05%), Megaloptera (5 inds.: 0.02%), and Hemiptera (4 inds.: 0.02%); average number of individuals of aquatic insects increased as the stream order increased; average numbers of individuals of Plecoptera and Trichoptera decreased and increased, respectively, as the stream order increased. Tolerant species such as Chironomidae spp., Uracanthella rufa, and Hydropsychidae spp. were particularly abundant in the down stream reaches (order VII). Species diversity indices (H') and dominace indices (DI) were relatively higher and lower, respectively, in the mid-stream reaches (order IV~VI). Shredders occupied the smallest part and collector-gatherers were most abundant among the functional feeding groups (FFGs); collector-filterers considerably increased in the down stream reaches (orders VI and VII); scrappers were relatively evenly distributed throughout the stream reaches; predators were relatively more abundant in the uppermost stream reaches (order II). Overall, the characteristics of aquatic insect comminity and FFGs in the Gapyeong Creek are largely similar to those in the normal streams of temperate deciduous forest in the northern hemisphere that is explained by the river continuum concept. |
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| Ű¿öµå |
| aquatic insects;community composition;functional feeding group;stream order;Gapyeong Creek;Korean stream; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.36, no.1, 2003³â, pp.19-21
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200310103455902)
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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