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‹Îµœªœ °Š®œ°œÂ—Š¤¸‡nµ¼ Š ¹Êœ ¨³°—‡¨o °Š„´ £´¦·œš¦r (2545) š¸É«¹„¬µ¡ªnµ Ÿ¨„¦³š‹µ„„·‹„¦¦¤
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3. ‡ªµ¤®œµÂœnœ °ŠÂ¤¨Š¸ž³ µªÄœÂ˜n ¨³¦·Áª– ĜnªŠš¸É«¹„¬µ
‹µ„„µ¦«¹„¬µ‡ªµ¤®œµÂœnœ °ŠÂ¤¨Š¸ž³ µª ĜnªŠÁ—º°œ„¦„‘µ‡¤ ¡.«. 2551 – ¡§¬£µ‡¤ ¡.«. 2552
Ĝ¦·Áª–˜oœœÊÎ µ „¨µŠœÊε ¨³ž¨µ¥œÊÎ µ ¡ªnµ‡ªµ¤®œµÂœnœÁŒ¨¸É¥ °ŠÂ¤¨Š¸ž³ µª Ĝ¦·Áª–˜oœ 167.70 ˜´ª˜n°
˜µ¦µŠÁ¤˜¦ ¦·Áª–„¨µŠœÊÎ µ 202.88 ˜´ª˜n °˜µ¦µŠÁ¤˜¦ ¨³¦·Áª–ž¨µ¥œÊε 182.51 ˜´ª˜n°˜µ¦µŠÁ¤˜¦ (£µ¡š¸É 5)
£µ¡š¸É 5 ‡ªµ¤®œµÂœnœ °ŠÂ¤¨Š¸ž³ µªÄœ¦·Áª–˜oœœÊε „¨µŠœÊε ¨³ž¨µ¥œÊε
4. ‡ªµ¤´¤¡´œ›r¦³®ªnµŠ‡ªµ¤®œµÂœn œ °ŠÂ¤¨Š¸ž³ µª„´ ž{‹‹´¥šµŠ„µ¥£µ¡Â¨³Á‡¤¸°Š¨Îµ›µ¦ ˜n¨³¦· Áª–
‹µ„Ÿ¨„µ¦ª·Á‡¦µ³®r‡ªµ¤´¤¡´œ›r¦³®ªnµŠÂ¤¨Š¸ž³ µªÂ¨³ž{ ‹‹´¥šµŠ„µ¥£µ¡˜nµŠÇ ¡ªnµ ‹Îµœªœœ·—¨³
‡ªµ¤®œµÂœn œ °ŠÂ¤¨Š¸ž³ µªš¸É¡¦· Áª–˜oœœÊ娳„¨µŠœÊÎ µÃ—¥£µ¡¦ª¤Â¨oªÅ¤n¤¸‡ªµ¤´ ¤¡´ œ›r„´ž{‹‹´ ¥šµŠ
„µ¥£µ¡˜nµŠÇ ŗo „n °»–®£¼¤·œÊÎ µ °»–®£¼¤·°µ„µ« ‡ªµ¤¨¹ „ °Š¨Îµ›µ¦ ‡ªµ¤„ªoµŠ °Š¨Îµ›µ¦ ‡ªµ¤Á¦Èª °Š„¦³ÂœÊÎ µ
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‹¹ŠÅ¤n nŠŸ¨„¦³š˜n °˜´ªÂ¤¨Š Ž¹ÉŠ˜nµŠ‹µ„¦·Áª–ž¨µ¥œÊÎ µš¸É¤¸ž{ ‹‹´¥šµŠ„µ¥£µ¡˜nµŠÇ ˜„˜nµŠ‹µ„¦·Áª–˜o œœÊ娳
„¨µŠœÊ夵„ ¨³¡ªnµ‡ªµ¤®œµÂœn œ °ŠÂ¤¨Š¸ž³ µª¤¸‡ªµ¤´ ¤¡´œ›r„´ž{ ‹‹´¥šµŠ„µ¥£µ¡Å—o„n °»–®£¼¤·œÊε (r = -
0.820, p<0.05) °»–®£¼¤·°µ„µ« (r = -0.940, p<0.01) ‡ªµ¤„ªoµŠ °Š¨Î µ›µ¦ (r = 0.846, p<0.05) ¨³ž¦·¤µ–°°„Ž·Á‹œ
¨³¨µ¥œÊε (r = 0.830, p<0.05) šÎµÄ®o¡„µ¦Â¡¦n„¦³‹µ¥ °ŠÂ¤¨Š¸ ž³ µªµŠœ·—Å—o„n Cloeon sp. , Caenis sp.1 ¨³
Caenis sp.2 Ž¹ÉŠ¡ªnµ¤¸‡ªµ¤®œµÂœnœ¤µ„š¸É »—¦·Áª–ž¨µ¥œÊÎ µ Ž¹ÉŠ°—‡¨o°Š„´ ‹´œ—µ (2541) š¸É«¹„¬µ¡ªn µÂ¤¨Š
¸ž³ µª„¨»n¤š¸É¤¸‡ªµ¤šœšµœ˜n°„µ¦Áž¨¸É ¥œÂž¨Š °Š·ÉŠÂª—¨o°¤ ŗo„n ªŠ«r Baetidae ¨³ Caenidae
‹³Á®ÈœÅ—oªnµ ¤¨Š¸ ž³ µª¤¸‡ªµ¤Åª¼Š˜n°„µ¦Áž¨¸É¥œÂž¨Š °Š·É ŠÂª—¨o°¤°¥nµŠ´—Á‹œ Ž¹ÉŠ´ŠÁ„˜Å—o ‹µ„
œ·—¨³‡ªµ¤®œµÂœnœš¸É¡ÄœÂ˜n¨³¦· Áª– ×¥¡Â¤¨Š¸ž³ µªš´ÊŠ®¤— 14 „»¨ 15 œ·— Ĝ¦· Áª–˜oœœÊε ¡ 14
œ·— ‡ªµ¤®œµÂœnœÁŒ¨¸É¥ 167.70 ˜´ª˜n °˜µ¦µŠÁ¤˜¦ ¦·Áª–„¨µŠœÊÎ µ¡ 11 œ·— ‡ªµ¤®œµÂœnœÁŒ¨¸É ¥ 202.88 ˜´ª˜n °
˜µ¦µŠÁ¤˜¦ ¨³¦·Áª–ž¨µ¥œÊÎ µ¡ 3 œ· — ‡ªµ¤®œµÂœnœÁŒ¨¸É ¥ 182.51 ˜´ ª˜n°˜µ¦µŠÁ¤˜¦ Ž¹É Šµ¤µ¦™Â—Š
‡ªµ¤´¤¡´œ›r„´·ÉŠÂª—¨o °¤Ã—¥¦°¦·Áª–¨Îµ›µ¦Å—o°¥n µŠ´—Á‹œ Ž¹ÉŠ°—‡¨o°Š„´  Sangpradub ¨³‡–³ (1996) ¨³
¥¦¦¥Š‡r ¨³‡–³ (2540) ŗo¦µ¥Šµœªnµ „¨»n¤´˜ªr š¸É¤¸‡ªµ¤Åª¼Š˜n°„µ¦Áž¨¸É¥œÂž¨Š °Š·É ŠÂª—¨o°¤‹³¡¤µ„Äœ
137.04
62.96 87.65
127.16
253.09
338.27
197.53 223.46
75.31
220.99 197.53
302.47
41.98
179.01
256.79 264.20
153.09
200.00
0.00
100.00
200.00
300.00
400.00
Up stream
Mid stream
Down stream
Density
Study period
Jule-08 Sep-08 Nov-08 Jan-09 Mar-09 May-09