Benthic macroinvertebrates

(epifauna) (in fauna)(benthic zone)

(Benthos Benthic organisms)

-

-

(filtering collectors)(gathering collectors)

(Benthos Benthic organisms)

Benthic macro invertebrates)

(bioindicators)

1

2

3

4

51

6

(Qualitative sampling)

2. (Quantitative sampling)

:

1.(Shovel

and dredge) Surber-type sampler) (Hand net) (Bottom aquatic kick net)

(Surber-type sampler)

(Bottom aquatic kick net)

( : www.epa.gov)

2.

grabs Ekman grab, Petersen grab Coresampler

Ekman grab Peterson grab

( : www.envco.ro)

3. (Sieve)

10 mesh (2 ) , 20 mesh (800

) 30 mesh (600 )

4. 5.

1.

--

2.

3.

4.

5.

1.

3

2.

Ekmangrab

3. (Sieve)

Ekmangrab

4.

-

Ekmangrab

5.

6.

Ekmangrab

1.0.5

2.

“ ”

--

-

1. Ephermeroptera 2. Odonata

3. Plecoptera 4. Hemiptera

5. Neuroptera 6. Trichoptera

7. Lepldoptera 8. Coleoptera

9. Diptera

-

Ephermeroptera

EphermerellldaeHeptagenidae Ephermeridae

Polamanthidae

Baetidae

Plecoptera

Perlldae Perltoperlidae

Trichoptera

Odontoceridae

Goeridae

Calamoceratidae

Trichoptera

PhllopotamidaeHydropsychidae

Neuroptera

Corydalidae

odonata

Gomphldae Coenagrioniidae

Protoneuride

Euphaeldae

Calopteygidae

Hemiptera

1

Gerridae

Nepldae

Naucoridae

Corixidae

Coleoptera

Gyrinidae

Dytlscidae

Lapldoptera

Diptera

Chironomidae

Tipulidae

Simuliidae

: Oligochaeta

1.

River

Watch

8

25

:

1 1

2 2

3 3

4 4

1.River Watch

:

1 2 3 4 5

River Watch

BMWP Bio-Monitoring Working Party Score

BMWP ScoreBiotic index of Thailand Freshwater

invertebrates Mustow 2002

1. 1

2. 3. 4. 3 2

5. 4 Average Score Per

Taxa:ASPT

ASPT

ASPT

2

BMWP

Himalayan River

2548.1

47

http://pirun.ku.ac.th/~fscibtb/download/Pollution_Biology.pdf 11 2554.

benthos http://www.deqp.go.th index.php?option=com_phocadownload&view=section&id=1&Itemid=54

11 2554

.2550

Sharma K. K. and Chowdhary S. 2011. Macroinvertebrate assemblages as biological indicators