The Impacts of Ecosystem Hypertrophication and Climate Changes on Thrive of the Jellyfish in Shatt Al-Basrah Canal

*Ali Bassal Mahmood -  Marine Science Center, University of Basrah, Iraq
Imad J. M. Al-Shawi -  University of Basrah, Iraq
Hazem A. Al-Sayab -  Marine Science Center, University of Basrah, Iraq
Sejad K. Jasib -  Marine Science Center, University of Basrah, Iraq
Zuhair A. Abdulnabi -  Marine Science Center, University of Basrah, Iraq
Nadia K. Muhsen -  Marine Science Center, University of Basrah, Iraq
Yosra J. Alewi -  Marine Science Center, University of Basrah, Iraq
Published: 4 Sep 2019.
Open Access Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Citation Format:
Article Info
Section: Research Articles
Language: EN
Full Text:
Supp. File(s):
COPYRIGHT TRANSFER STATEMENT
Subject
Type Research Instrument
  Download (15KB)    Indexing metadata
AUTHOR CONTRIBUTION FORM
Subject
Type Research Instrument
  Download (15KB)    Indexing metadata
Statistics: 92 116
Abstract

The present study (i.e. the first study in Iraqi waters) identified the causes of reproduction and excessive growth of the jellyfish, which locally known as thagolol, of the type (Catostylus perezi) in the region of Shatt Al-Basrah canal - west of Basrah city. The reproduction and excessive growth of jellyfish occurs in many estuaries and coastal areas in the world, which is a recurring global problem in the context of climate change. The conducted study was included measurements of dissolved oxygen, electrical conductivity, total dissolved solids, pH, temperature, nitrates, phosphate, quality and quantity of phytoplankton during the dominant of :the northwest winds; the neap tide and during a full tidal periods in October of 2018 and March of 2019. The results showed that there were thrive of jellyfish by huge numbers in Shatt Al-Basrah canal. The physical; chemical and biological causes (i.e., the local causes), were identified, namely: (1) salinity, (2) water column temperature stratification in the context of climate change, (3) an excessive increase in the concentrations of nitrate and phosphate, (4) abundance of phytoplankton (i.e. dinoflagellate), including Protoperidinium sp. and Alexandrium sp.; and (5) overfishing. Hence, the absence of any of these factors will lead to the absence of this type of jellyfish.

 


Note: This article has supplementary file(s).

Keywords
Jellyfish; ecosystem hypertrophication; climate change; Shatt Al-Basrah canal

Article Metrics: