Study of correlation between macrofauna population and water quality status, of Karaj River

Document Type : (original research)

Authors

1 Research Group of Biodiversity and Biosafety, Research Center for Environment and Sustainable Development (RCESD), Department of Environment, Tehran, Iran

2 Faculty of Biology, Campus of Sciences, University of Tehran, Tehran, Iran

3 Department of Marine Biology, Faculty of Marine Science and Technology, North Tehran Branch, Islamic Azad University, Tehran, Iran

4 Research Group of Environmental Economics, Research Center for Environment and Sustainable Development (RCESD), Department of Environment, Tehran, Iran

Abstract

 The distribution, abundance and assemblage structure of macrofauna as one of the important tools in assessing the quality of water, were determined during 9 stations in Karaj River, seasonally; 2017-2018. Sampling of macrofauna was performed with Surber sampler. Also, depth (11±3 cm), temperature (10.5 ± 4.3 ◦C), Salinity (0.01±0.01 ppt), DO (9.3±0.9 mg/l), EC (0.19±0.1ᵘs/m), pH (8.5±0.2), TDS (0.12±0.07 g/l) and Turbidity (19.6±29.1NTU) were measured in each station by multimeter device. A total 38454 individuals belonged to 42 families and 52 taxa were identified. Chironomidae was the most dominant family. The nine families making up 83% of all specimens (Baetis, Tubifex, Micrasema, Rhithrogena, Eporus, Hydropsyche, Leptophlebiidae and Simulium). The maximum density (7758 ind/m2) was obtained at station 8 while the minimum (592 ind/m2) was observed at station 5. The station 7 was characterized by the higher species diversity (H', 2.78) and the stations 8 was characterized by the lowest diversity indices (H', 1.57). The PCA showed that TDS, EC, Salinity and pH were the main parameters, and the cluster analysis divided the stations into three groups (G1: St2, St 6; G2: St 8, St 9, St 1, St 7; G3: St 4, St 5, St 3). Although the Shannon Index evaluated the upstream stations better, it generally assessed the water quality of the Karaj River as medium. 

Keywords

References

1. Azizi Jalilian, M., 2009. Selection of Limits of Acceptable Change Indicators for Recreational Activities on Central Alborz Protected Area (southern part), Case study: Karaj River. Mcs. Thesis of Environmental Science, University of Tehran, Faculty of Natural Resources, Karaj. 171 p.
2. Barbour, M.T.; Gerritsen, J.; Snyder, B.D. and Stribling, J. B., 1999. Rapid bioassessment protocols for use in streams and wadeable rivers: periphyton, benthic macroinvertebrates and fish (Vol. 339): US Environmental Protection Agency, Office of Water Washington, DC.
3. Carew, M.E.; Pettigrove, V.J.; Metzeling, L., And Hoffmann, A.A. 2013. Environmental monitoring using next generation sequencing: rapid identification of macroinvertebrate bioindicator species. Frontiers in zoology. Vol. 10, No. 45, 15 p.
4. Cavanagh, N.; Nordin, R.N. and Warrington, P.D., 1996. Freshwater Biological Sampling Manual. Water Management, Ministry of Environment, Lands and Parks, Victoria, BC.
5. Gerritsen, J.; Carlson, R.E.; Dycus, T.l.; Faulkner, C.; Gibson, G.R.; Harcum, J. and Markowitz, S.A., 1998. Lake and Resrevoir Bioassessment and Biocriteria Technical Guidance Document. United States Environmental Protection Agency. Office of Water. Washington, Dc (4504f), EPA 841-b-98-007.
6. Hilsenhoff, W.L., 1988. Rapid field assessment of of organic pollution with a family-level biotic index. Journa of the North American Benthological Society. Vol. l, pp: 65-68.
7. Humpesch, U.H. and Fesl. C., 2002. The effect of river bed management on the habitat structure and Macroinvertebrates community of a ninth order river, in Austria. Archir fur Hydrobiology Large Rivers. Vol. 13, No. 1, pp: 29-46.
8. Keylock, C., 2005. Simpson diversity and the Shannon Wiener index as special cases of a generalized entropy. Oikos. Vol. 109, No. 1, pp: 203-207.
9. Mandaville, S., 2012. Benthic macroinvertebrates in freshwaters: Taxa tolerance values, metrics, and protocols, Citeseer.
10. Wang, X., 2012. Spatial distribution of benthic macro invertebrates in the erhai basin of Southwestern China. Journal of freshwater ecology. Vol. 27, No. 1, pp: 89-96.
Journal of Animal Environment
Volume 12, Issue 4
December 2020
Pages 561-574

Files

Share

How to cite

Statistics