Assessment of the primary production statues of the international Gavkhooni Wetland, Iran

Mohammad Hadi Abolhasani, Niloofar Pirestani, Saeed Ghasemi


Wetlands are of the unique and productive ecosystems in the world. The present study was conducted to determine primary production statues of the international Gavkhooni Wetland, based on chlorophyll-a. Sampling was performed seasonally from March 2017 to February 2018. Four sampling stations were assigned based on latitude and longitude. Water salinity, temperature, pH, nitrate, phosphate, BOD5, TDS, EC, TSS and dissolved oxygen were determined in triplicate in each station. Trophy level was determined using index TSI. The results showed that there was no significant difference in mean chlorophyll-a content between the seasons. The highest and lowest chlorophyll-a contents were observed in spring and winter, respectively; and the significantly highest content was measured in the station A (Shakh Kenar). There was no significant difference in the water physicochemical parameters between the seasons (P>0.05). The mean water nitrate level of the sampling stations was 4.255 mg/l; the highest (5.07 mg/l) and lowest (3.35 mg/l) levels were recorded in the summer and autumn, respectively. The mean water phosphate level of the sampling stations was 1.082 mg/l; the highest (1.75 mg/l) and lowest (0.57 mg/l) levels were recorded to the winter and summer, respectively. The mean dissolved oxygen level during the study was 5.64 mg/l. According to the results, nitrate is the limiting factor for production in the Gavkhooni Wetland. Based on index TSI, the wetland is oligotrophic in the spring, autumn and winter, but mesotrophic in the summer.


Chlorophyll-a, Assessment, Trophic state, Physicochemical factors.

Full Text:



Abadi M., Rostani N., Bagherzadeh Karimi M. (2008). Determination of the right of the Gavkhoni Lagoon, Second Conference on Environmental Engineering, Tehran, University of Tehran, Faculty of Environment. 31 April 2008. (In Persian)

Brown M.R., McCausland M.A., Kovalski K. (1998). The nutritional value of four Australian microalgal strains fed to Pacific oyster Crassostrea gigas spat. Aquaculture, 165: 281-293.

Bennett J., Whitten S.M. (2002). The private and social values of wetlands: an overview. Land and Water Australia. 19 p.

Camacho A., WurtSbaugh W., Miracle M., Armengol X., Vicente E. (2003). Nitrogen limitation of phytoplankton in a Spanish karst lake with a deep chlorophyll maximum: a nutrient enrichment bioassay approach. Journal of Plankton Research, 397-404.

Clesceri L.S., Greenberg A.E., Trussell R.R. (1989). Standard methods for examination of water and sea water. 17 th edition. APHA-AWWA-WPCF. IV. 258 p.

Davis C. (1955). The marine and freshwater plankton, Michigan State University Press. 439 p.

Fietz S., Welch E.B. (2005). Regional, vertical and seasonal distribution of phytoplankton and pholosynthetic pigments in Baikal Lake Baikal. Journal of Plankton Research, 8: 793-810.

Galbraith H., Amerasinghe P., Huber-lee A. (2005). The effects of agriculture irrigation on wetland ecosystem in developing countries: A literature review. CA discussion. International Water Management Institute Publication. 23 p.

Ganjian Ali., Makglogh A. (2004). Study of distribution of major groups of phytoplankton in the southern basin of the Caspian Sea with emphasis on Chrysophyta (diatoms) and Pyrophyta (Duttachakdaran). Iranian Journal of Fisheries Science, 12(1): 103-116. (In Persian)

Hedayati Fard M., Mousavi Nadoushan R., Kham Khaji N., Vahidi F. (2012). Investigation of the effect of nitrites on the initial production and distribution of plankton of Volsht Lake. Applied Biology, 76-94. (In Persian)

Kalytyte D. (2007). Summer phytoplankton in deep Lithuanian lakes. Biologia, 53: 52-58.

Kamandary M. (2014). Potential of Govkhoni's wetland: Capabilities and limitations. (In Persian)

Kerbs C. (1989). The Experimental analysis of distribution and abundance. Harper and Row Publishing. 623 p.

King L., Jones R.I., Barker P. (2002). Seasonal variation in the epilithic algal communities from four lakes of different trophic state. Archive of Hydrobiology, 154(2): 177-198.

Kholfe Nilsaz M. (2009). Planktonic frequency and biodiversity survey of Shadegan Wetland and determnation of its trophic status. Journal of Marin Biology, 1(3): 1-13. (In Persian)

Kotani T., Hagiwara A., Snell T.W., Serra M. (2005). Euryhaline Brachionus strains (Rotifera) from tropical habitats morphology and allozyme patterns Hydrobiologia, 546(1): 161-167.

Leymarie E., Doxaran D., Babin M. (2010). Uncertainties associated to measurements of inherent optical properties in natural waters, Applied Ecology, 49(28): 5415-5436.

Li X., Manman C., Anderson B.C. (2009). Design and performance of a water quality treatment wetland in a public park in Shanghai, China. Ecological Engineering, 35: 18-24.

Majnounian H. (2015). Protected areas of Iran basics and protection measures for parks and protected areas. (In Persian)

Martin S. (2004). An introduction to ocean remote sensing. Cambridge University Press. pp: 124-185.

Montazeri M., Karimpour M. (2011). Identification of Zayandehrood basin climate zones using multivariate statistical methods. Natural Geography Quarterly, 4 (14). (In Persian)

Najari H. (2003). International Wetland of Isfahan: Gavkhooni, Environmental Organization. 31 p.

Naz M., Turkman M. (2005). Phytoplankton biomass and species composition of Lake Golbasi (Hatay-Turkey). Turkish Journal of Biology, 29: 49-56.

Newell G.E., Newell R.C. (1977). Marine plankton. Harper Collins Publishers Ltd. 240 p.

Polladi M., Farhadian A., Vazirizadeh A. (2013). Composition, abundance, and biomass of zooplankton community in Helleh River Estuary, Bushehr, Persian Gulf. Fisheries Department, Natural Resources Journal of Iran, 66(3): 255-270. (In Persian)

Redfield A. (1990). The biological control of chemical factors in the environment. Journal of Biological Sciences, 46: 205-221.

Rolland A., Bertrand F., Maumy M., Jacquet S. (2009). Assessing phytoplankton structure and spatiotemporal dynamic in freshwater ecosystem using powerful multiway statistical analysis. Journal of Water Research, 43(13): 3155-3168.

Southwood T.R.E., Henderson P.A. (2000). Ecological Methods. 3rd Edition. Blackwell Science. 575 p.

Zaki P., Khodadadi M., Khodadadi B. (2004). Phytoplankton analysis of Karun river with emphasis on toxic dinoflagellates (research project) Faculty of Agriculture and Natural Resources, Ahwaz Islamic Azad University. 99 p. (In Persian)


  • There are currently no refbacks.