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2. ‡ªµ¤®¨µ„®¨µ¥Â¨³‹Îµœªœ °ŠÂ¤¨Š¸ž³ µªÄœÂ˜n¨³¦· Áª–
‹µ„„µ¦«¹„¬µ‡ªµ¤®¨µ„®¨µ¥Â¨³‹Îµœªœ °ŠÂ¤¨Š¸ ž³ µª ¦³®ªnµŠ¦·Áª–˜o œœÊε „¨µŠœÊÎ µ ¨³ž¨µ¥œÊε
Ĝ¨Î µ›µ¦Á ˜¦´„¬µ¡´œ›»r ´˜ªržiµÃ˜œŠµoµŠ ץčoÁ‡¦ºÉ°Š¤º° surber sampler ¡‹Îµœªœ˜´ªÂ¨³‹Îµœªœœ·— °ŠÂ¤¨Š
¸ž³ µª —´ŠÂ—ŠÄœ ˜µ¦µŠš¸É 1
˜µ¦µŠš¸É 1 ‹Îµœªœœ·— ‹Îµœªœ˜´ª ¨³‡nµ—´œ¸‡ªµ¤®¨µ„®¨µ¥ °ŠÂ¤¨Š¸ž³ µªÄœ¦·Áª–˜oœœÊε „¨µŠœÊε ¨³ž¨µ¥œÊε
Family Species
Up stream Mid stream Down stream
Total ni pi Pi ln pi ni pi Pi ln pi ni pi Pi ln pi
Baetidae Baetis sp. 175 0.215 -0.330 225 0.228 -0.337 0 - - 400
Centroptilum sp. 46 0.057 -0.162 36 0.037 -0.121 0 - - 82
Cloeon sp. 0 - - 0 - - 318 0.359 -0.368 318
Platybaetis sp. 124 0.152 -0.287 188 0.191 -0.316 0 0.000 0.000 312
Caenidae Caenis sp.1 1 0.001 -0.008 1 0.001 -0.007 380 0.428 -0.363 382
Caenis sp.2 4 0.005 -0.026 4 0.004 -0.022 189 0.213 -0.329 197
Ephemerellidae Crinitella sp. 81 0.100 -0.230 36 0.037 -0.121 0 - - 117
Tarleya sp. 4 0.005 -0.026 0 - - 0 - - 4
Uracantella sp. 2 0.002 -0.015 0 - - 0 - - 2
Ephemeridae Ephemera sp. 1 0.001 -0.008 0 - - 0 - - 1
Heptageniidae Campsoneuria sp. 107 0.131 -0.267 91 0.092 -0.220 0 - - 198
Thalerophyrus sp. 79 0.097 -0.226 274 0.278 -0.356 0 - - 353
Leptophebiidae Habrophebiodes sp. 124 0.152 -0.287 65 0.066 -0.179 0 - - 189
Choroterpes sp. 61 0.075 -0.194 63 0.064 -0.176 0 - - 124
Traulus sp. 6 0.007 -0.036 3 0.003 -0.018 0 - - 9
Total individuals 815 986 887 2688
Total species 14 11 3 15
Shannon Index S pi = 1 -1.772 S pi = 1 -1.535 S pi = 1 -0.693
Eveness -0.654 -0.567 -0.256
* ni = Number of individuals, pi = Species proportional abundance for each species
‹µ„„µ¦«¹„¬µ‡ªµ¤®¨µ„®¨µ¥ °Šœ· —¦³®ªnµŠ¦·Áª–˜oœœÊÎ µ „¨µŠœÊε ¨³ž¨µ¥œÊε Ĝ¨Îµ›µ¦ °ŠÁ ˜
¦´ „¬µ¡´œ›»r ´ ˜ªrži µÃ˜œŠµo µŠ ¡ªnµ ¦· Áª–˜oœœÊÎ µ „¨µŠœÊÎ µ ¨³ž¨µ¥œÊε¤¸ ‡ªµ¤Â˜„˜n µŠ°¥n µŠ¤¸œ´ ¥Îµ‡´ ¥·ÉŠ
(F=11.303,p<0.05) ×¥Á¤ºÉ°œÎµ¤µÁž¦¸¥Áš¸ ¥‡ªµ¤Â˜„˜n µŠ‡ªµ¤®¨µ„®¨µ¥ °Šœ·—¦³®ªnµŠ¦·Áª–—oª¥ª· ›¸ Post
Hoc š¸É¦³—´‡ªµ¤ÁºÉ°¤´Éœ 95% ¡ªnµ‡ªµ¤®¨µ„®¨µ¥ °Šœ·—¦³®ªnµŠ¦·Áª–˜o œœÊ娳„¨µŠœÊεŤn¤¸‡ªµ¤Â˜„˜nµŠ
„´œšµŠ™·˜· (p>0.05) ‡ªµ¤®¨µ„®¨µ¥ °Šœ·—¦³®ªn µŠ¦·Áª–˜o œœÊ娳ž¨µ¥œÊÎ µ¤¸‡ªµ¤Â˜„˜nµŠ°¥nµŠ¤¸ œ´¥Î µ‡´
¥·ÉŠ (p<0.05) ¨³‡ªµ¤®¨µ„®¨µ¥ °Šœ· —¦³®ªnµŠ¦·Áª–„¨µŠœÊ娳ž¨µ¥œÊε¤¸‡ªµ¤Â˜„˜nµŠ°¥nµŠ¤¸œ´ ¥Îµ‡´¥·ÉŠ
(p<0.05) ‹µ„š¸É¡Â¤¨Š¸ž³ µª¦ª¤š´ÊŠ®¤— 15 œ·— ¡Â¤¨Š¸ž³ µª 6 ªŠ«r 14 „»¨ 14 œ·— Ĝ¦·Áª–˜o œœÊε
¡Â¤¨Š¸ž³ µª 14 „»¨ 14 œ· — ¦·Áª–„¨µŠœÊÎ µ ¡Â¤¨Š¸ž³ µª 10 „»¨ 11 œ·— ¨³¦·Áª–ž¨µ¥œÊÎ µ¡
¤¨Š¸ž³ µª 2 „»¨ 3 œ·— Ĝ‹Îµœªœ—´Š„¨nµª¡ªnµ ¤¨Š¸ž³ µªœ· — Caenis sp.1 ¨³ Caenis sp.2 Áž}œ„¨»n¤
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‡ªµ¤Â˜„˜nµŠ„´œ°¥nµŠ¤¸œ´ ¥Î µ‡´¥·É Š (F=53.577,p<0.05) ×¥Á¤ºÉ°œÎ µ¤µÁž¦¸ ¥Áš¸¥‡ªµ¤Â˜„˜nµŠ—´œ¸ ‡ªµ¤
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