Journal of Natural Environment

Replacement of PHABISM univariate method by fuzzy approach as requirement for environmental flow assessment in rivers (case study, Jajrood river)

Document Type : Research Paper

Authors

1 Researcher-Department of Environment

2 Professor-SBU

3 researcher-Tehran

4 Graduated/Shahid Beheshti University

Abstract

Assessment of environmental flow regime based on regional ecological status is the supreme method which has been approved by broad previous researches. Although ecological weakness points PHABISM univariate method is inevitable, this method has been applied in developed and developing countries.Present research uses fuzzy logic approach as an improved habitat model to simulate river habitats and demonstrate that replacement of PHABISM univariate method by fuzzy approach in national and regional environmental flow regime assessment in rivers is essential. By applying physical habitat simulation in Jajrood river by two described methods which were PHABSIM univariate habitat model and fuzzy based habitat simulation, WUA curves have been obtained. According to results, PHABISM univariate habitat method assesses environmental flow regime more than real needs of river and it could dramatically deteriorate challenges between environmental managers and stakeholders. It is strongly recommend to avoid use of PHABSIM univariate physical habitat models for environmental flow assessment in rivers or streams and ecologists must shift on fuzzy based approaches for further studies.

Keywords

Abdi, R., Yasi, M., Sedghi, H., 2015. Evaluation of ecologic-hydraulic-hydrologic methods of environmental flow assessment. Water and wastewater journal. (2) 26,.71-81.71-81.‎(In Persian)
Ayyoubzadeh, S.A., Sedighkia, M., Hajiesmaeili, M., 2017 . Ecohydraulics and simulation of river habitats. University Press, Tarbiat Modares University, 288 p.(In Persian)
Bovee, K.D., 1986. Development and evaluation of habitat suitability criteria for use in the instream flow incremental methodology (No. FWS/OBS-86/7). USDI Fish and Wildlife Service.
Freeman, M.C., Bowen, Z.H., Bovee, K.D. and Irwin, E.R., 2001. Flow and habitat effects on juvenile fish abundance in natural and altered flow regimes. Ecological Applications, 11(1), pp.179-190.
Maddock, I., Harby, A., Kemp, P. and Wood, P.J., 2013. Ecohydraulics: an integrated approach. John Wiley & Sons.
Naderi, M.H., Zakerinia, A., Salarjazi, M., 2019. Investigation on ecohydraulic indices in analysis of environmental flow regime and physical habitat simulation using RIVER2D with focusing on restoration of Zaringol river. Iranian ecohydrology journal,, (1) 6,.205-222.‎(In Persian)
Schneider, M. and Peter, A., 1999, July. Okostrom: field study and use of the simulation model CASIMIR for determination of fish habitat in River Brenno. In Proceedings of the 3rd International Symposium on Ecohydraulics, Salt Lake City, Utah.
Sedighkia, M., Abdoli, A., Ahmadi, A., Gholizadeh, M., 2017 . Development of environmental flow assessment method in southern Caspian Sea basin. Environmental studies,(3) 43,.543-560.‎
Sedighkia, M., Ayyoubzadeh, M., Hajiesmaeli, M., 2015 . Investigation of necessities river environmental flow using hydroecological method. Iranian ecohydrology journal,,(3) 2 .125-131.‎(In Persian)
Sedighkia, M., Ayyoubzadeh, S.A. and Hajiesmaeili, M. (2014). Environmental Challenges and Uncertainties of Hydrological and Hydraulic Approaches for Environmental Flow Assessment in Streams of Iran. The 4th International Conference on Environmental Challenges and Dendrochronology, Sari, Iran.
Stalnaker, C., Lamb, B.L., Henriksen, J., Bovee, K. and Bartholow, J., 1995. The Instream flow incremental methodology: a primer for IFIM. National Biological Service Fort Collins Co Midcontinent Ecological Science Center
Journal of Natural Environment
Volume 73, Issue 2
August 2020
Pages 327-339