Document Type : Original Article


1 Research Center for Environment and Sustainable Development, Tehran, Iran

2 Gilan Provincial Office of Environment, Rasht, Iran

3 Fars Provincial Office of Environment, Shiraz, Iran

4 Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, Iran


Introduction: Using of waterbirds (waterfowl and waders) census data is common to calculate the size and trend of population changes. Besides, it is important as an indicator of wetlands’ ecological changes in biodiversity conservation. Fars province’s wetlands are one of the most diverse aquatic habitats in Iran where have been severely damaged in recent years due to reduced water levels and habitat changes and consequently, these international wetlands are categorized in the list of Montero as a threatened wetland. In this study, trends of total Waterbirds population changes in Fars province and their main wetlands, including Bakhtegan Basin (Kajjan, Tashk, and Bakhtegan), Parishan and Arjan Plain international wetlands, next to important wetlands of Kaftar, Maharloo and Droudzan Dam Lake have been investigated. 
Material and methods: The results of the migratory Waterbirds’ census in Fars province had been obtained from the Department of Environment for about thirty years (1988–2018). Though the population census has been conducted in Fars province since 1967, during the years 1967 to 1987, the census was confined to swans, geese, ducks, and coots, other waterbirds have been added to the bird census since 1988.Data had been analyzed in a long-term period (31-years, 1988-2018) and a short-term period (10-year, 2009-2018) by using RTRIM statistical package. This package has been extracted from Trends & Indices for Monitoring Data (TRIM) in R software.
Results and discussion: About 14% of the population and 67% of Iran's waterbirds (116 out of 174 species of Iran) have been related to Fars province, in 31 years ago. The results have been shown a sharp decline in the total population of migratory waterbirds in Fars province with -10.9% slope (0.891 ± 0.0004) per year and also a sharp decline in population with -11% slope for a 10-year period (0.890±0.0001). Only the Maharloo wetlands in the long-term and the Drudzen Dam Lake in the Short-term had a stable population trend, while in other wetlands the trend of decreasing population was moderate to steep. The highest long-term population decline was observed in Parishan wetlands and Arjan plain with -13.9% and -10.1%, respectively. In the short-term, the Parishan wetland had the highest population decline of -10% (0.861 ±0.0001) per year. The highest number of species was observed in the 90s and also in 2004-2009, after this period the species richness of these wetlands decreased. as far as the result shows, the proportion of Bakhtegan and Parishan’s waterbird population was varied from 10% to 88% of the total Fars province’s population. Also, the lowest proportion of the waterbird’s population in these two wetlands was recorded in the last ten years. It seems that drying up of aquatic zones and land-use change were among the most important factors affecting the reduction of population and species richness of waterbirds. As a matter of fact, these wetlands do not have the 5 international criteria of Ramsar wetlands based on the status of the waterbird population. Therefore, need to be prioritized and effective restoration and protection of them in environmental protection programs.
Conclusion: In recent years, habitat changes due to aquatic changes and anthropogenic factors have reduced the quality of wetland habitats in Fars province and drastic changes in waterbird populations. Providing the environmental sustainability needed for ecological sustainability, establishing an integrated ecosystem management system, implementing comprehensive wetland management programs, and population monitoring are the most important restoration strategies for the studied wetlands. The results of this study can be used in the management of wetlands ecosystems, preparation and implementation of the restoration plan and also a calculation of damages to wetlands in Fars province.


Ahmadpour, M., Ahmadpour, M., Hosseini, S.H., Hoshiar, F., Hasanzadeh, H., Abadi, H. and Sinkakarimi, M.H., 2015. Study of the International Sorkhrud Wetland’s conservation position, using to the birds Status, compliance with the important bird and biodiversity areas selection criteria and Ramsar Convention. Wetland Ecobiology. 6, 5-20.
Amat, J.A. and Green, A.J., 2010. Waterbirds as bioindicators of environmental conditions, in: Hurford, C., Scheider, M. and Cowx, I. (Eds.). Conservation Monitoring in Freshwater Habitats. A Practical Guide and Case Studies. Springer. The Netherlands. pp. 45-52.
Amini, H. and van Roomen, M., 2009. Waterbirds in Iran. January 2009. Results of a Mid-Winter Count In the Provinces of Gilan, Mazanderan, Golestan, Fars, Khuzestan, Bushehr, Hormozgan and Sistan-Baluchistan. Department of Environment, Islamic Republic of Iran and Foundation Working Group International Waterbird and Wetland Research. The Netherlands.
Amini, H. and Willems, F., 2004. Waterbirds in Iran, January 2004. Results of A Midwinter Count in the Provinces of Gilan, Mazandaran, Khuzestan, Hormuzgan and Sistan-Baluchestan. Department of Environment. Tehran. p. 120.
Amini, H. and Willems, F., 2008. Waterbirds in Iran. January 2007. Results of a Mid-Winter Count In the Provinces of West-Azerbaijan, Gilan, Mazandaran, Golestan, Sistan-Baluchistan, Hormozgan, Fars, Bushehr and Khuzestan, DoE, Tehran. p. 390.
Amini Nasab, M. and Qahremanpuri M., 2009. Comparison of the dominant wintering waterbirds of Parishan, Bakhtegan and Maharloo lakes in Fars Province between 2007-2005. First National Convention on Wetlands in Iran, 4th March, Ahvaz, Iran.
Amini Nasab, M. and Qahremanpuri M., 2011. The status of international wetlands in Fars province in terms of bird status among Iran's international wetlands, 2nd National Iranian Wetlands Conference. Islamic Azad University of Ahvaz, 3rd March, Ahvaz, Iran.
Amini Nasab, M. and Radmenesh, N., 2011. Comparison of biodiversity indicators of wintering waterbirds of Bakhtegan Lake between 2005-2007. 2nd National Conference on Iranian Wetlands. Ahwaz. Islamic Azad University of Ahvaz, 3rd March, Ahvaz, Iran.
Ashoori, A. and Abdus, A., 2012. Important Waterbirs Habitat of Gilan. Katibe, Iran. p. 260.
Asir Ramesh, D. and Ramachandran, S., 2005. Factors influencing flamingo (Phoenicopterus roseuis) distribution in the Pulicat Lagoon ecosystem, India. Wetlands Ecology and Management. 13(1), 69-72.
Bagherzadeh Karimi, M., 2017. Iranian wetlands (introducing ecological, economic and social functions of wetlands and introducing Iranian wetlands values and issues). Ramsar Convention, Iran.
Behbash, R., Amini, A., Alvandi, R. and Khakjasteh, Kh., 2012. A survey of diversity and density of birds in Khoramshahr (Naseri) Marsh and their conservation status in relation to IBA criteria and the Ramsar Convention. Environmental Sciences. 7, 11-20.
Behrouzirad B., Esmaili H., Tabiee O. and Jolaee L., 2010. Investigating the monthly diversity of waterbirds and waders along the lagoon of the Sivand dam lake in Fars Province. 2nd National Iranian Wetlands Conference. Islamic Azad University of Ahvaz, 3 March, Ahvaz, Iran.
Boertmann D. and Riget F., 2006. Effects of changing water levels on numbers of staging Dabbling Ducks in a Danish wetland. Waterbirds. 29(1), 1-8.
Bogaart, P.W., Van der Loo, M. and Pannekoek, J., 2016. Rtrim: Trends and indices for monitoring data, R package version 1.0.1
Burfield, I. and Bommel, F.V., 2004. Birds in Europe: Populations, Estimates, Trends and Conservation Status. BirdLife Conservation Series No. 12. Birdlife International. Cambridge. UK.
Climate of Fars Province, 2019. Retrieved on 22/10/2019 from
De Sante, D.F., Nott, M.P. and Kaschube, D.R., 2005. Monitoring, modeling and management: why base avian monitoring on vital rates and how should it be done? In: Bird Conservation Implementation and Integration in the Americas. Ralph, C.J., and Rich, T.D., (Eds.). Illustrated. 795-804.
Delany, S. and Scott, D., 2006. Waterbird Population Estimates Fourth Edition. 2006: Wetlands International. Wageningen. The Netherland.
Fouque, C., Guillemain M. and Schricke, V., 2009. Trends in the numbers of Coot Fulica atra and wildfowl Anatidae wintering in France, and their relationship with hunting activity at wetland sites. Wildfowl. 2, 42–59.
Goudarzian, P. and Erfanifard, Y., 2011. Long-term changes in species diversity of migratory Waterbirds in Parishan wetland of Fars province. 2nd National Conference on Desertification and Sustainable Development of Iranian Desert Wetlands. 13th – 14th September, Arak, Iran.
Khoush Akhlagh, F., Ranjbar, F., Toulabi, S. and Masoumpour Samakoush, J., 2010. A study on drought and its effects on water resources and agriculture in hydrologic water year of 2007-2008 (case study: marvdasht county). Geography Spring. 8, 119-136 .
Lake Parishan monitoring program. 2009. Areport of Iran Wetlands Conservation Plan. Department of Environment, Tehran, Iran.
Lotfi, A., 2010. Report Describing Baseline Conditions of Lake Parishan. Iran Wetlands Conservation Project. Fars Provincial Office of Environment, Shiraz, Iran.
Mansouri, J., 2000. Field Guide for Iran Birds. Zehn Aviz Publications, Iran.
Mayr, G., 2014. On the Middle Miocene Avifauna of Maboko Island, Kenya, Geobios. 47, 133-146.
Musil, P., Musilová, Z., Fuchs, R. and Poláková, S., 2011. Long-term changes in numbers and distribution of wintering waterbirds in the Czech Republic, 1966–2008. Bird Study. 8, 450-460.
Musilova, Z., Musil, P., Pola´kova, S. and Fuchs, R., 2009. Wintering ducks in the Czech Republic: changes in their population trends and distribution. Wildfowl Special Issue. 2, 73–85.
Nilsson, L., 2005. Long-term trends and changes in numbers and distribution of some wintering waterfowl species along the Swedish Baltic Coast. Acta Zoologica Lituanica. 15, 151-157.
Nilsson, L., 2008. Changes in numbers and distribution of wintering waterfowl in Sweden during forty years, 1967–2006. Ornis Svecica.18, 135–236.
Ogden, J.C., Baldwin, J.D., Bass, O.L., Browder, J.A., Cook, M.I., Frederick, P.C., Frezza, P.E., Galvez, R.A., Hodgson, A.B. and Meyer, K.D., 2014. Waterbirds as indicators of ecosystem health in the coastal marine habitats of southern Florida: 1. Selection and justification for a suite of indicator species. Ecological Indicators. 44,148-163.
Pannekoek, J. and Van Strien, A.J., 2005. TRIM 3 Manual (Trends and Indices for Monitoring Data). Statistics Netherlands. Voorburg. The Netherlands.
Porter, R. F., Christensen, S. and Schiermaker-Hansen, P., 1996. Field Guide to the Birds of the Middle East. Published by T and AD Poyser. London. UK.
Rahimi, S., Tabiee, O. and Julaee, M., 2009. Assessment of species diversity of waterbirds and clocks of Kaftar wetland of Fars province. Wetland Ecobiology. 1, 80-70.
Schreiber, E. and Burger J., 2002. Biology of marine birds. Boca Raton. USA: Boca Raton. CRC Press Florida. USA:
Scott D. A., 2010. Results of mid-winter waterbird counts in Iran in the Early 1970s. Podoces. 5, 11-28.
Shayankia, S., 2003. Identification of density, distribution and biodiversity of waterbirds in Gavkhuni wetland and comparison with Ramsar Convention criteria, Environmental Science. 40, 48-65.
Sinclair, A.R., Nkwabi, A., Mduma, S. A. and Magige, F., 2014. Responses of the Serengeti avifauna to long-term change in the environment. Ostrich. 85, 1-11.
Statistical Center of Iran., 2016. Census results. Retrieved 30/07/1398 from
Stolen, E.D., Breininger, D.R. and Frederick, P.C., 2005. Using waterbirds as indicators in estuarine systems: successes and perils, in: Bortone, S.A. (Ed.), Estuarine Indicators. CRC Press, Boca Raton, Florida. pp. 409-422 .
Svensson, L. and Grant P., 1999. Collins Bird Guide. Harper Collins. London.
Tabiee, O., 2010. Investigation of species diversity of wintering waterbird in Parishan international wetland. National conference on human, Environment and sustainable development. 9th March 2010, Hamadan, Iran.
Tabiee, O. and Bostani, F., 2015. Study on Ecological Water Requirement of Kamjan International Wetland in Fars Province. Fars Provincial Office of Environment, Iran.
Tabiee, O. and Nasiri, M., 2013. The survey of spices diversity of migratory wintering waterfowl and waders in arjan international wetland in Fars province. Journal of Animal Biology. 6, 29–40.
Tayefeh, F., Badam Firouz, J., Ghorbanzadeh Zaferani, Gh., Izadian, M., Ebrahimi, T., Ebrahimi, E. and Julaee, L., 2019. Monitoring and restorations biodiversity of Bakhtegan and Parishan Wetlands. Research Center for Environment and Sustainable Development. 144 p.
Teymoury, A., Pour Ahmad, A., Habibi, L. and Salarvandian F., 2011. Environmental determination of Tashak and Bakhtegan Lakes using fuzzy-C mean classification method. Natural Geography Research. 43, 21-37.
Van Roomen, M., van Winden, E. and van Diek, H., 2008. Iran-Dutch co-operation in Waterbird Monitoring 2004-2007 DoE. Islamic Republic of Iran and WIWO. The Netherlands. pp.32.
Wetlands International, 2012. Waterbird Population Estimates. Fifth Edition. Summary Report. Wetlands International. Wageningen. The Netherlands.
Wetlands International, 2015. Report on the Conservation Status of Migratory Waterbirds in the Agreement Area - Sixth Edition (CSR6). UNEP/AEWA/ MOP6.14. UNEP/AEWA, Bonn, Germany. Available Online at