The effect of some plant nutrients concentrations on the algal diversity in the water of the Kirkuk irrigation project within the district of TuzKhurmatu -Iraq

Abstract

The current study is conducted to find out the effect of some plant nutrients on the algal diversity in the water of the Kirkuk irrigation project within the city of Tuz Khurmatu in three sites. The first is located before the project enters the city and the second is located within the city limits which is the meeting of the project with Aqsu stream and the site of dumping sewage waste from the city of Tuz Khurmatu. The third is located outside the city, at the rate of one sample per month from November 2018 until August 2019. The results of the study show that there is a variation in the concentrations of the main nutrients depending on the nature of the site and the date of collecting the samples. The values ​​of phosphate, silica and nitrates ranged between (0.24-2.40) mg Phosphorous atom - phosphate / liter, (0.56-3.31) mg silicon atom - silica / liter, (0.54-3.75) mg atom nitrogen - nitrate / liter respectively. Eighty-three species have been characterized in which diatoms composed (36) species which represent the majority. The most prominent of these are Cycotella, Navicula, Synedra, Amphora, Nitizchia, Cymbella and (25) species belonging to the chlorophyceae and its genera are Pandorina, Protococcus, Schorederia, Eudorina, Microseta, Aphanocha. , Spirogyra, Stichococcus, Zygnema Cosmarium .Thirteen species belong to the cyanophyceae and their genera which are Oscillatoria, Rivularia Gloeocapsa, Chroococcus, (5) species belong to the chrysophyceae,(1) species to the euglenophyceae of the genus Phacus and (2) species to the pyrophycophyta of the genus Peridinium.

Quality and Quantitative studies were done to estimate the algal diversity in this enterprise, Algae were classified into generic or species levels accordingly were classified (83) species the majority of the were related to diatoms (36) species and formed the highest majority of plan plankton in the study area and from generic nemesis Navicula , Synedra , Amphora , Nitizchia , Cymbella and (25) species related to Chlorophyceae and from generic nemesis Pandorina , Protococcus , Schorederia , Eudorina Aphanochaete,Microspora ,Spirogyra,Stichococcus  ,  Zygnema , Cosmarium and (13) species related to Cyanophyceae and from generic nemesis Chroococcus ,Gloeocapsa ,Rivularia, Oscillatoria and (5) species related to Chrysophyceae and (1) species to Euglenophyceae from Phacus genus and (2) species related to Pyrophycophyta from Peridinium genus.