The use of biological indices and diversity indices to evaluate water quality of rivers in Mashhad, Iran
- PDF / 773,453 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 34 Downloads / 173 Views
ORIGINAL ARTICLE
The use of biological indices and diversity indices to evaluate water quality of rivers in Mashhad, Iran Hassan Malvandi 1
&
Reyhane Moghanizade 1 & Asghar Abdoli 2
Received: 2 April 2020 / Accepted: 2 October 2020 # Institute of Zoology, Slovak Academy of Sciences 2020
Abstract The main objective of the present study was to investigate the diversity and abundance of macrobenthos in the Dehbar, Zoshk and Kang rivers in Iran. Sampling was carried out at 10 stations for three seasons with 45 days intervals using a Surber sampler. Simpson, Shannon-Weiner and Margalef diversity indices, as well as biological indices for Biological Monitoring Working Party (BMWP), Average Score Per Taxon (ASPT), Hilsenhoff Family Biotic Index (HFBI), and Ephemeroptera, Plecoptera and Trichoptera (EPT) were calculated at all stations. In this study, a total of 21 families of macrobenthos in seven orders were identified. Organisms in the Baetidae family were dominant at stations 1D, 2D and 6D in the Dehbar River and at stations 1Z and 1 K in the Zoshk and Kang rivers, respectively. The greatest diversity of macrobenthos was observed in the spring. There was significant correlation between the three biological indices. In general, water quality of the rivers at the upstream stations was not good. The diversity indices decreased from upstream to downstream, and the biological indices showed a similar reduction in water quality from upstream to downstream. Keywords Macrobenthos . Macroinvertebrates . River ecosystem . Indicator taxa . Khorasan Razavi
Introduction There are many areas in the world where surface water is the only source of water for domestic, agriculture and industrial uses, but despite water shortages, misuse of water is widespread (Karr 1998; Sharma and Chowdhary 2011; Shokri et al. 2014). Therefore, water quality assessment is of particular importance (Asheghmolla et al. 2016). The study and identification of river quality is insufficient using only common measurement methods such as physical and chemical parameters of water, because they provide information restricted to the sampling time; while bioassessment is a lowcost and rapid field method requiring little laboratory equipment and provides acceptable results compared to physical and chemical evaluation (Esmaili Sari 2003; Aazami et al. * Hassan Malvandi [email protected]; [email protected] 1
Department of Environmental Sciences and Engineering, Hakim Sabzevari University, 379 post box, Sabzevar, Khorasan Razavi 9617916487, Iran
2
Department of Biodiversity and Ecosystem Management, Environmental Research Institute, Shahid Beheshti University, Tehran, Iran
2015; MacEdo et al. 2016). One bioassessment method uses macroinvertebrates, which have different levels of resistance to pollution, and the difference is clearer for some species. Some of these species are only able to survive in clean water, free of any contamination, and some can survive in highly contaminated waters, so that the presence or absence of these aquatic organisms and th
Data Loading...
