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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.44, no.2, 2011³â, pp.195-202
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( Statistical Methods to Evaluate the Occurrence Probability of Exotic Fish in Japan )
Çѹ̴ö;Á¤¿íÁø; ¸íÁö´ëÇб³ ȯ°æ»ý¸í°øÇаú;¸íÁö´ëÇб³ ȯ°æ»ý¸í°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ÀϺ»Àü±¹À» ¿¬±¸´ë»óÁö·Î ¼±Á¤ÇÏ°í ´ë»óÁö¿¡ ¼­½ÄÇϰí ÀÖ´Â ´ëÇ¥ ¿Ü·¡¾îÁ¾ÀÎ ¹è½º¿Í ºí·ç±æÀÇ °ø°£Àû ¼­½ÄºÐÆ÷ Ư¼ºÀ» Æò°¡ÇÏ¿´´Ù. ¶ÇÇÑ GAM, GLM, CTA µîÀÇ ¼¼°¡Áö Åë°è ±â¹ýÀ» ÀÌ¿ëÇÏ¿© ÀϺ»Àü±¹¿¡¼­ÀÇ ÇØ´ç ¾îÁ¾¿¡ ´ëÇÑ °ø°£Àû ºÐÆ÷ÆÐÅÏÀ» ¿¹ÃøÇÏ¿´´Ù. ±× °á°ú ¹è½º¿Í ºí·ç±æ µîÀÇ ¿Ü·¡¾îÁ¾Àº Àα¸ ¹× ´ï dzÀÇ ÀÎÀ§ÀûÀΠȯ°æÀÎÀÚ¿Í À¯ÀÇÇÑ Á¤ÀÇ °ü°è¸¦ º¸ÀÓ¿¡ µû¶ó ¿Ü·¡¾îÁ¾ÀÇ È®»ê¿¡ ¹ÌÄ¡´Â Àΰ£È°µ¿ÀÇ ºÎÁ¤ÀûÀÎ ¿µÇâÀÌ È®ÀεǾú´Ù. ¶ÇÇÑ È¸±Í¸ðµ¨À» ÅëÇÑ ÇØ´ç¾îÁ¾ÀÇ ¼­½ÄÈ®·ü ¿¹ÃøÀ» ÅëÇÑ ¹è½º¿Í ºí·ç±æÀÇ ¼­½Ä ºÐÆ÷´Â °¢°¢ GAM (AUC: 0.88, Kappa: 0.42)°ú CTA (AUC: 0.92, Kappa: 0.44)¿¡ ÀÇÇØ¼­ °¡Àå Á¤È®ÇÏ°Ô ¿¹ÃøµÇ´Â °ÍÀ¸·Î Æò°¡µÇ¾ú°í, °¡Àå À¯ÀÇÇÑ È¯°æÀÎÀÚ´Â ¿¬Æò±Õ±â¿ÂÀ¸·Î ³ªÅ¸³µ´Ù. µû¶ó¼­ °¢ »ý¹°Á¾º°·Î ¼­½ÄÈ®·üÀ» ÃßÁ¤ÇÏ°í ¿¹ÃøÇϴµ¥ À־ ÀûÇÕÇÑ Åë°è¸ðµ¨¿¡ ´ëÇÑ °ËÁõÀº »ý¹°Á¾º°·Î ¼±ÇàµÇ¾î¾ß ÇÒ Çʿ䰡 ÀÖÀ» °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. ºñ·Ï º» ¿¬±¸ÀÇ ¿¬±¸´ë»óÁö´Â ÀϺ»ÀÌÁö¸¸ ±¹³»ÀÇ °æ¿ìµµ ÃÖ±Ù µé¾î ¾î·ù¸¦ Æ÷ÇÔÇÑ »ý¹°Á¶»ç°¡ ´Ù¼öÀÇ Á¶»ç¿¬±¸¿¡¼­ ±¤¿ªÀûÀ¸·Î ½ÃÇàµÇ°í Àֱ⠶§¹®¿¡ º» ¿¬±¸¿Í °°Àº ´Ù·®ÀڷḦ ÀÌ¿ëÇÑ ±¤¿ª ½ºÄÉÀÏ¿¡¼­ÀÇ »ý¹°Á¾ÀÇ ¼­½ÄÈ®·ü ¹× ÃâÇöÁ¾¼ö¿¡ ´ëÇÑ ¿¬±¸°¡ ÃæºÐÈ÷ °¡´ÉÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
This study analyzed and modeled the relationships between the probabilities of two exotic species occurrence (i.e. largemouth bass and blue gill) and environmental factors such as climatic and geographical variables using Generalized Additive Models (GAM), Generalized Liner Models and Classification Tree Analysis (CTA). The most moderate occurrence probability of largemouth bass was predicted using GAM with an area under the curve (ADC) of 0.88 and Kappa of 0.42, while those of blue gill was suggested by using CTA with an AUC of 0.92 and Kappa of 0.44. The most significant environmental variable in terms of changes in deviance for both species was the annual air temperature for the occurrence probability. Dams had stronger effect on the occurrence of largemouth bass than blue gill. Model development and prediction for the occurrence probability of fish species and richness are necessary to prevent further spread of exotic fishes such as largemouth bass and blue gill because they can threaten habitats of native river ecosystem through various mechanisms.
 
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classification tree analysis;blue gill;generalized additive models;generalized liner models;largemouth bass;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.44, no.2, 2011³â, pp.195-202
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201124359107923)
¾ð¾î : Çѱ¹¾î
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