Development Of Malaysian Water Quality Indices Using Aquatic Macroinvertebrates Population Of Pahang River Basin, Pahang, Malaysia

• Main Author: Wan Abdul Ghani, Wan Mohd Hafezul
• Format: Thesis
• Language: English
• Published: 2016
• Subjects: QH1 Natural history (General - Including nature conservation, geographical distribution)
• Online Access: http://eprints.usm.my/31476/1/WAN_MOHD_HAFEZUL_BIN_WAN_ABDUL_GHANI_24.pdf; http://eprints.usm.my/31476/
• Institution: Universiti Sains Malaysia

Di dalam kajian ini, satu data makroinvertebrata dan parameter air yang besar telah dikumpulkan dari 50 cabang sungai di Lembangan Sungai Pahang (PRB). Pada mulanya, prestasi tiga penyampel; jaring berbingkai D dan segi empat sama dan penyampel Surber, telah diuji untuk mengumpulkan makroinvertebrata akuatik di tiga sungai. Variasi Relatif (RV) makroinvertebrata yang rendah telah dikumpulkan oleh jaring segi empat sama di dua sungai (15% and 19%), dan ini menunjukkan kecekapan yang tertinggi berbanding penyampel yang lain. Walaupun jaring segi empat sama memerlukan masa yang lebih lama untuk memproses setiap sampel (18.31 min), ia mencatatkan kepelbagaian makroinvertebrata yang paling tinggi (Alphapurata = 13.5). Oleh sebab itu, jaring segi empat sama telah dipilih untuk mengumpul data makroinvertebrata untuk perbandingan prestasi indeks biotik dan menerbitkan nilai toleransi (TV) makroinvertebrata tersebut. Sebelas indeks biotik telah dipilih untuk dibandingkan prestasi mereka; Indeks Biotik Famili (FBI), Pemantauan Biologi Parti Kerja (BMWP), BMWP-Thai, BMWP-Viet, Purata Skor Per Takson (ASPT), ASPT-Thai, ASPT-Viet, HKHBios, Sistem Pemarkahan Afrika Selatan Versi 5 (SASS5), Indeks SingScore dan Indeks EPT. In this study, a large macroinvertebrates and water parameters data were collected from fifty Pahang River Basin (PRB) tributaries. Initially, the efficiency of three samplers; D-frame and square nets and Surber sampler, for collections of aquatic macroinvertebrates were tested in three rivers. Low relative variation (RV) of macroinvertebrates collected by square net in two rivers (15% and 19%, respectively) indicated its highest efficiency among the samplers. Although the square net required a longer time to process each sample (18.31 min) it recorded the highest macroinvertebrate diversities (Alphaaverage = 13.5). Consequently, the square net was selected to collect macroinvertebrates for comparison of biotic index performances and the derivation of their tolerance values (TVs). Eleven biotic indices were chosen; Family Biotic Index (FBI), Biological Monitoring Working Party (BMWP), BMWP-Thai, BMWP-Viet, Average Score Per Taxon (ASPT), ASPT-Thai, ASPT-Viet, HKHBios, South African Scoring System version 5 (SASS5), SingScore and EPT Index and their performances were compared.