The implications of micro-invertebrate community structure on water quality in the Selai River, Endau-Rompin National Park, Johor, Malaysia
The benthic macro-invertebrate community of the Selai River in Endau-Rompin National Park, Johor, was characterized. The water quality status was assigned and 13 running-water sites along the river continuum classified using biotic index criteria. Community structures were assessed by total taxa ric...
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| Huvudupphovsmän: | , , , |
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| Materialtyp: | Book Section |
| Språk: | English |
| Publicerad: |
University of Malaya
2014
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| Ämnen: | |
| Länkar: | http://agris.upm.edu.my:8080/dspace/handle/0/7014 |
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| Sammanfattning: | The benthic macro-invertebrate community of the Selai River in Endau-Rompin National Park, Johor, was characterized. The water quality status was assigned and 13 running-water sites along the river continuum classified using biotic index criteria. Community structures were assessed by total taxa richness, Ephemeroptera-Plecoptera-Trichoptera (EPT) taxa richness, the original Biological
Monitoring Working Party (BMWP) and habitat-related BMWP scores, the original Family Biotic Index (FBI) based on the Hilsenhoffs work and functional feeding group-related FBI. Five chemical parameters
were used in the classification of the unpolluted river's quality. The clean water indicating assemblage or EPT taxa is rich in diversity and richness (more than ten genera), which constituted 28-71% of the total taxa richness. Absence of stoneflies at the potamonic sites was possibly due to habitat-related preference
for clean, cool running-water; the absence of such stenoecious species may not reflect pollution of the lower river segment. Original and habitat-related BMWP scores based on 7-18 and 6-19 families of macro-invertebrates varied widely from 37 to 139 and from 30.3 to 155.4, respectively. Original and feeding habit-related FBI values based on 8-248 and 12-250 individuals of mainly aquatic insects were comparable, narrowly fluctuating from 3.15 to 4.63 and from 3.09 to 4.61, respectively. Together with chemical categorization (conductivity, dissolved oxygen, PO., NO) and Si04) of the river's quality, the eleven sets of independent classification schemes suggested that the running-water sites belong to Classes I to III of the Malaysian National Water Quality Standards, classifiable as excellent to moderately good quality. The limitations of classification results based on the six biological indices, and their implications on the classification of Malaysian river ecosystems, are discussed. |
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