Assessing the water fertility and toxicity of north-west part of lake Manzala (Egypt) by an algal growth potential test
Other Title(s)
تقدير مدى خصوبة و سمية مياه الجزء الشمالي الغربي لبحيرة المنزلة بمصر باستخدام اختبار النمو الطحلبي المحتمل
Joint Authors
Dasuqi, S. A. Shaban
Abd Hamid, Muhammad Ismail
Ali, Ilham Mahmud
al-Najjar, Muhammad al-Sayyid al-Sayyid
Source
Journal of King Abdul Aziz University : Marine Science
Issue
Vol. 9, Issue 1 (31 Mar. 1998), pp.113-129, 17 p.
Publisher
King Abdulaziz University Scientific Publishing Center
Publication Date
1998-03-31
Country of Publication
Saudi Arabia
No. of Pages
17
Main Subjects
Abstract EN
Water fertility and toxicity of north-west pan of Lake Manzala in Egypt were investigated bimonthly from May.
1991 10 March.
1992.
Nutrient enrichment biotests to define algal growth limiting nutrients, their bioavailability and the heavy metal toxicity of the sampled water were achieved using Selenastrum capricornutum Strain NIVA-CHL I.
Maximum algal growth of the test alga was usually much higher than 10 mg dry WI L- I indicating the hypereutrophic conditions of the: investigated water and its undesirable: quality .
Algal growth potential test (AGPT) exhibited results ranging from 30.60 mg L- 1• to 1228.78 mg L- 1 algal dry weight .
The algal growth was mainly limited by N.
heavy metal toxicity and in few cases by P.
The: observed ChI.
a (phytoplankton chlorophyll a) was significantly lower than the expected ChI.
a.
No consistent interrelationship was found between the observed and the expected ChI.
a values.
The N:P weight ratio is a pertinent parameter for determining growth limiting nutrient.
The relationships belween the chemically analyzed nutrients (P and N) and their bioavailable concentrations were greatly affected by the N:P ratio and heavy metal toxicity.
Generally, the results of AGPT revealed that this technique is good.
effective and sensitive tool to assess the fertility.
nutrient bioavailability and toxicity of the lake Manzala waters.
American Psychological Association (APA)
al-Najjar, Muhammad al-Sayyid al-Sayyid& Dasuqi, S. A. Shaban& Abd Hamid, Muhammad Ismail& Ali, Ilham Mahmud. 1998. Assessing the water fertility and toxicity of north-west part of lake Manzala (Egypt) by an algal growth potential test. Journal of King Abdul Aziz University : Marine Science،Vol. 9, no. 1, pp.113-129.
https://search.emarefa.net/detail/BIM-389212
Modern Language Association (MLA)
Dasuqi, S. A. Shaban…[et al.]. Assessing the water fertility and toxicity of north-west part of lake Manzala (Egypt) by an algal growth potential test. Journal of King Abdul Aziz University : Marine Science Vol. 9, no. 1 (Mar. 1998), pp.113-129.
https://search.emarefa.net/detail/BIM-389212
American Medical Association (AMA)
al-Najjar, Muhammad al-Sayyid al-Sayyid& Dasuqi, S. A. Shaban& Abd Hamid, Muhammad Ismail& Ali, Ilham Mahmud. Assessing the water fertility and toxicity of north-west part of lake Manzala (Egypt) by an algal growth potential test. Journal of King Abdul Aziz University : Marine Science. 1998. Vol. 9, no. 1, pp.113-129.
https://search.emarefa.net/detail/BIM-389212
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 126-128
Record ID
BIM-389212