Impact of Water Quality on the Algal Diversity in Peshawar Valley, Pakistan

Aqal Zaman, . (2006) Impact of Water Quality on the Algal Diversity in Peshawar Valley, Pakistan. Doctoral thesis, University of Peshawar, Peshawar.

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The present study, spread over two years dealt with the phycological flora of l0 representative sites of Peshawar Va[ey as affected by quatity of water' Algal samples were taken seasonally from each of the sites. The various physical, chemical and biological features such as temperature, PH, turbidity, total dissolved solids' total suspended solids, electrical conductivity, sodium chloride, dissolved oxygen, carbon dioxide, ammonia nitrogen, nitrates, sulphates, phosphates, total alkalinity, total hardness, calcium hardness, magnesium hardness, and biological oxygen demand were analyzed' The phycological flora consisted of 239 species belonging to 68 genera. The class Cyanophyceae was represented by 42 species and12 genera' Chlorophyceae had32 genera and 94 species. Bacillariophyceae had 19 genera and 86 species. Euglenophyceae had 2 genera and 11 species while Xanthophyceae had 3 genera and 6 species' Microphotographs of some important species were taken. A detailed taxonomic description of all the species is provided in appendix The seasonal distribution showed that there were differences in kind and number of species in various seasonal investigated sites. In spring, there were a total of 116 species that belonged to Cyanophyc eae (20 species), Chlorophyceae (49 species)' Bacillariophyceae (38 species), Xanthophyceae (5 species) and Euglenophyceae (3 species). The summer season had 73 species of five classes. cyanophyceae (13 species), Chlorophy ceae (26 species), Bacillariophyceae (28 species), Xanthophycae (one species) and Euglenophyceae (5 species). There wete 126 species in five classes in autumn season including Cyanophyc eae Q4 species), Chlorophyceae and Bacillariophyceae (each 46 species), Xanthophyceae (one species) and Euglenophyceae (9 species)' There were 103 species during winter including Cyanophyceae (16 species), Chlorophyceae (39 species)' Bacillariophyceae (45 species) and Euglenophyceae (3 species). There were a wide range of variation among various parameters in different sites and seasons. To establish the possible relationship between species and various parameters, correlation analysis was performed. Positive correlation between algal species o/oage and total dissolved solids, ammonia nitrogen, electrical conductivity, carbon dioxide, nitrate, phosphate, total hardness and calcium hardness were observed. With increasing TDS from 110 - 287 mglL, the number of species increases in all the seasons. With increasing ammonia nitrogen from 0.37 - 0.75 ppm,0.29 - 3.77 ppm and O.2l - 2.99 ppm increased the number of species in spring, autumn and winter, respectively. Similarly, increasing of PO4 (5 - 14.4 mg/L) in spring, (2.2 - I7 mglL) in autumn, (0.7 - 8.6 mg/L) in winter increases the algal species. Moreover, the algal species also increases when the amount of NOI (0.3 - 16.5 mg/L), electrical conductivity (31 - 150 dS m-t), CO, (1 1 1 - 175 ppm), total hardness (385 - 1530 mg/L) and calcium hardness (200 - 1360 mg/L) increases in the water in winter season. On the contrary, BOD and NaCl were negatively correlatcd with number of species. BOD was inversely proportional to algal species Yoage. With increasing of BOD (20 - 7l mglL) in spring, (14 - 93 mglL) in summer, 15 - 55 mg/L in autumn and 18 - 70 mglL in winter, decreases thc numbcr of species 7oage. Likewise high value of NaCl (103 - 4.5 mg/L) in summer season was not favourable for the $owth and distribution of algae as compared to other seasons. Futhermore, there was no correlation between the water temperafure, pH, turbidity, total suspended solids, dissolved oxygen, sulphate, total alkalinity, magnesium hardness and species o/oage. Despite that, the optimum temperature, high pH, normal turbidity, high CO2 and SOa accelerate the growth and number of species whereas the increase or decrease of TSS, DO, TA and MgH had generally no effect on the acldition or rccluctiorr ol'algal spccir:s. l?urtlrcr study is nccdcd to quantil'y somc of the parameters and to work out the productivity of these water bodies at primary

Item Type: Thesis (Doctoral)
Uncontrolled Keywords: Water Quality, Algal Diversity, Peshawar Valley, Pakistan, phycological flora, Cyanophyceae
Subjects: Q Science > QK Botany
Depositing User: Unnamed user with email
Date Deposited: 24 Aug 2017 09:43
Last Modified: 24 Aug 2017 09:43

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