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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.37, no.4, 2004³â, pp.394-399
Chikuma °­ »ó-Áß·ù ¼ö¿ª ¼ö¼­°ïÃæÀÇ ºÐÆ÷ ¾ç»ó (Central Japan)
( Distribution Pattern of Aquatic Insects in the Upper and Middle Reaches of the Chikuma River in Central Japan )
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ÀϺ»¿¡¼­ °¡Àå ±ä Chikuma°­ÀÇ ¼¼ ÁöÁ¡¿¡¼­ 2002³â ¿©¸§ µ¿¾È ¼ö¼­°ïÃæÀÇ Á¾Á¶¼º°ú ¹Ðµµ¸¦ light trap¿¡ ÀÇÇØ Á¶»çÇÏ¿´´Ù. ÇÏ·ç µ¿¾È ÃÑ 3,278 ¼ºÃ¼°¡ äÁýµÇ¾úÀ¸¸ç, ±× Áß °¡Àå ÁÖ¿äÇÑ ºÐ·ù±ºÀº ÆÄ¸®¸ñ(57.5%)·Î ³ªÅ¸³µ°í, ±× ´ÙÀ½À¸·Î ³¯µµ·¡¸ñ(35.4%), ÇÏ·ç»ìÀ̸ñ(7.1%) ¼øÀ¸·Î ³ªÅ¸³µ´Ù. äÁýµÈ ¼ö¼­°ïÃæÀÇ ¹Ðµµ¿Í »ýü·®Àº ÇÏ·ù·Î °¥¼ö·Ï Áõ°¡ÇÏ¿´´ø ¹Ý¸é, Á¾¼ö¿Í ´Ù¾çµµÁö¼ö(H')´Â °¨¼ÒÇÏ¿´´Ù. Á¦1, Á¦3Á¶»ç ÁöÁ¡¿¡¼­ Á¾ ¼ö´Â °¢°¢ 36Á¾(H'= 4.30), 31Á¾(H'= 2.81)À¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ, Á¦1 ÁöÁ¡¿¡¼­ Á¦3 ÁöÁ¡À¸·Î °¥¼ö·Ï ±â´ÉÀû ¼·½Ä±º(functional feeding group)ÀÇ »ó´ë¹Ðµµ´Â Á¦1 ÁöÁ¡¿¡¼­ 'collectors'°¡ Áõ°¡Çϰí Á¦3 ÁöÁ¡¿¡¼­ 'shredders'°¡ °¨¼ÒÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
The species composition and abundance of aquatic insects were investigated by light trap in summer, 2002 at three stations in the Chikuma River, Japan's longest river. A total of 3278 adults/day were collected, the great majority (57.5%) of which were Diptera, followed by Trichoptera (35.4%) and then Ephemeroptera (7.1%). The number of collected aquatic insects and their biomass gradually increased towards downstream, whereas the number of species and species diversity index (H') decreased. 36 species (H'= 4.30) of aquatic insects were collected at St. 1, versus 31 species (H'= 2.81) at St. 3. Moreover, the relative abundance of functional feeding groups changed from St. 1 to St. 3, i.e., 'collectors' increased and 'shredders' decreased.
 
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aquatic insect;Chikuma River;distribution pattern;functional feeding group;species diversity index (H');
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.37, no.4, 2004³â, pp.394-399
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200418317183486)
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