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Çѱ¹¼öÀÚ¿øÇÐȸ / v.33, no.5, 2000³â, pp.561-568
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( The Fish Migration through Fishlock at Youngam Lake ) |
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| 1999³â 4¿ùºÎÅÍ 11¿ù±îÁö Àü³² ¿µ¾ÏÀÇ ¿µ¾ÏÈ£ °©¹®½Ä¾îµµ¿¡¼ ¸ÅÁÖ 1ȸ¾¿ ¾îµµ·Î µé¾î¿À´Â¾î·ù¸¦ äÁýÇÑ °á°ú 25Á¾ 116,014°³Ã¼¸¦ äÁýÇÏ¿´À¸¸ç, ÀÌÁß ¿õ¾î, ÁÙ°øÄ¡, ¼þ¾î µî 10Á¾ÀÌ ÇÏõ°ú ¹Ù´Ù¸¦ ¿À°¡¸ç ¼½ÄÇϴ ȸÀ¯¼º¾î·ù·Î Àü䰳ü¼öÀÇ 99.5%¸¦ Â÷ÁöÇÏ¿´´Ù. ȸÀ¯¼º¾î·ùÁß °³Ã¼¼ö·Î´Â ÁÙ°øÄ¡, ºù¾î, ¿õ¾î ¼þ¾îÀÇ ¼øÀ¸·Î ¸¹ÀÌ Ã¤ÁýµÇ°í À̵é 4Á¾ÀÌ Àü äÁý °³Ã¼¼öÀÇ 99%¿¡ ÇØ´çÇÏ°í ³ª¸ÓÁö 6Á¾Àº ¸Å¿ì µå¹°°Ô äÁýµÇ¾ú´Ù. ºù¾î´Â 63%°¡ 7¿ù 20ÀÏ, ¼þ¾î´Â 43%°¡ 7¿ù 15ÀÏ, ¿õ¾î´Â 42%°¡ 5¿ù 10ÀÏ, ÁÙ°øÄ¡´Â 35%°¡ 5¿ù1ÀÏ¿¡ äÁýµÇ¾î ¾îÁ¾º°·Î ¶Ñ·ÇÇÑ È¸À¯½Ã±â°¡ ÀÖ¾ú´Ù. ȸÀ¯¼º ¾î·ùÁß ´ã¼öÈ£¿¡¼´Â ¿õ¾î, ºù¾î, ¼þ¾î, ¹®Àý¸ÁµÏ µî 7Á¾ÀÌ Ã¤ÁýµÇ°í À¯ÀÔÇÏõ¿¡¼´Â Àº¾î, ºù¾î, ¹ìÀå¾î µî 10Á¾ÀÌ Ã¤ÁýµÇ¾î ¾îµµ¸¦ ÅëÇÏ¿© ¼Ò»óÇÑ È¸À¯¼º ¾î·ù°¡ ´ã¼öÈ£¸¦ ÅëÇÏ¿© ÇÏõÀ¸·Î ¿Ã¶ó°¡´Â °ÍÀÌ È®ÀεǾú´Ù. |
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| The dimension of the fishlock at the Youngam Lake is 6.6m wide and 30m long, and it has been used for both fish migration and ship passage. The capacity of attraction freshwater is $0.172; extrm{m}^3/s$, and the water depth of the fishlock varies between 1.9m - 5.7m due to the tide. Fishes were sampled weekly by using 3m wide maze net from April to June, 1999, and by using purse seine covering the entire space of fishlock from July to November, 1999. 116,014 samples were comprised of 25 species, and 99.5% of the samples were 10 kinds of diadromous fishes. The order of the diadromous fishes in abundance was Hemirhamphus kurumeus, Hypomesus olidus, Coilia ectens, and Mugil cephalu, where these four species consist 99% of the individuals, and the other six species contribute only a few of individuals. Each species had unique peak migration period. The peak migration of Hypomesus olidus, Mugil cephalus, Coilia ectens, and Hemirhamphus kurumeus happened on July 20, July 15, May 10, and May 1, respectively.tively. |
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| °©¹®½Ä¾îµµ;ȸÀ¯;ȸÀ¯¼º¾î·ù;¿µ¾ÏÈ£;fishlock;migration;diadromous;Youngam lake; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.33, no.5, 2000³â, pp.561-568
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011920730399)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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