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Distribution and Seasonal Variation of Nutrient Salts and Chlorophyll-a in Surface Seawater Along Alexandria Costal Zone Area

Received: 30 May 2015    Accepted: 12 June 2015    Published: 04 July 2015
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Abstract

The aim of the present study is to investigate the hydrographic characteristics, nutrient salts and chlorophyll-a (Chl-a) along Alexandria Costal Zone Area. The study revealed that the pH values lie slightly in the alkaline side, with a range of 7.53 to 8.12, salinity showed a slightly variation, it ranged from 35.34 to 38.28 PSU, the values of dissolved oxygen were fluctuated between 4.77 and 11.13 mgl-1. The annual average of nutrients (μM) was as follow: (7.97 ± 1.72), (0.66 ± 0.14), (2.18 ± 0.73), (0.37± 0.09) and (12.42 ± 4.04) for nitrate, nitrite, ammonium, reactive phosphate and silicate, respectively. Relatively high levels of Chl-a concentrations was recorded during the period of study ranged from 0.38 to 6.96µgl-1 and a positive correlation was found between Chl-a and both NO3, NH4, PO4 and SiO4 (r= 0.383, 0.303, 0.213 and 0.341, respectively). Very high values of N/P ratio were recorded during the study period, this consideration showed that Phosphorus was limiting factor in the study area.

DOI 10.11648/j.sr.20150304.15
Published in Science Research (Volume 3, Issue 4, August 2015)
Page(s) 180-190
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

N/P Ratio, Nutrients, Chlorophyll-a, Alexandria

References
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Author Information
  • High Institute in Jerpoly area, Tripoli, Libya

  • Environmental Science Department, Faculty of Science, Damietta University, Damietta, Egypt

  • National Institute of Oceanography & Fisheries, Kayet Bay, Alexandria, Egypt

  • Environmental Science Department, Faculty of Science, Damietta University, Damietta, Egypt

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    Edweb Ali Salem Dango, Mahmoud Salem Ibrahim, Mohamed Abel Aziz Okbah, Mei Ibrahim El Gmaal. (2015). Distribution and Seasonal Variation of Nutrient Salts and Chlorophyll-a in Surface Seawater Along Alexandria Costal Zone Area. Science Research, 3(4), 180-190. https://doi.org/10.11648/j.sr.20150304.15

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    ACS Style

    Edweb Ali Salem Dango; Mahmoud Salem Ibrahim; Mohamed Abel Aziz Okbah; Mei Ibrahim El Gmaal. Distribution and Seasonal Variation of Nutrient Salts and Chlorophyll-a in Surface Seawater Along Alexandria Costal Zone Area. Sci. Res. 2015, 3(4), 180-190. doi: 10.11648/j.sr.20150304.15

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    AMA Style

    Edweb Ali Salem Dango, Mahmoud Salem Ibrahim, Mohamed Abel Aziz Okbah, Mei Ibrahim El Gmaal. Distribution and Seasonal Variation of Nutrient Salts and Chlorophyll-a in Surface Seawater Along Alexandria Costal Zone Area. Sci Res. 2015;3(4):180-190. doi: 10.11648/j.sr.20150304.15

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  • @article{10.11648/j.sr.20150304.15,
      author = {Edweb Ali Salem Dango and Mahmoud Salem Ibrahim and Mohamed Abel Aziz Okbah and Mei Ibrahim El Gmaal},
      title = {Distribution and Seasonal Variation of Nutrient Salts and Chlorophyll-a in Surface Seawater Along Alexandria Costal Zone Area},
      journal = {Science Research},
      volume = {3},
      number = {4},
      pages = {180-190},
      doi = {10.11648/j.sr.20150304.15},
      url = {https://doi.org/10.11648/j.sr.20150304.15},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.sr.20150304.15},
      abstract = {The aim of the present study is to investigate the hydrographic characteristics, nutrient salts and chlorophyll-a (Chl-a) along Alexandria Costal Zone Area. The study revealed that the pH values lie slightly in the alkaline side, with a range of 7.53 to 8.12, salinity showed a slightly variation, it ranged from 35.34 to 38.28 PSU, the values of dissolved oxygen were fluctuated between 4.77 and 11.13 mgl-1. The annual average of nutrients (μM) was as follow: (7.97 ± 1.72), (0.66 ± 0.14), (2.18 ± 0.73), (0.37± 0.09) and (12.42 ± 4.04) for nitrate, nitrite, ammonium, reactive phosphate and silicate, respectively. Relatively high levels of Chl-a concentrations was recorded during the period of study ranged from 0.38 to 6.96µgl-1 and a positive correlation was found between Chl-a and both NO3, NH4, PO4 and SiO4 (r= 0.383, 0.303, 0.213 and 0.341, respectively). Very high values of N/P ratio were recorded during the study period, this consideration showed that Phosphorus was limiting factor in the study area.},
     year = {2015}
    }
    

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  • TY  - JOUR
    T1  - Distribution and Seasonal Variation of Nutrient Salts and Chlorophyll-a in Surface Seawater Along Alexandria Costal Zone Area
    AU  - Edweb Ali Salem Dango
    AU  - Mahmoud Salem Ibrahim
    AU  - Mohamed Abel Aziz Okbah
    AU  - Mei Ibrahim El Gmaal
    Y1  - 2015/07/04
    PY  - 2015
    N1  - https://doi.org/10.11648/j.sr.20150304.15
    DO  - 10.11648/j.sr.20150304.15
    T2  - Science Research
    JF  - Science Research
    JO  - Science Research
    SP  - 180
    EP  - 190
    PB  - Science Publishing Group
    SN  - 2329-0927
    UR  - https://doi.org/10.11648/j.sr.20150304.15
    AB  - The aim of the present study is to investigate the hydrographic characteristics, nutrient salts and chlorophyll-a (Chl-a) along Alexandria Costal Zone Area. The study revealed that the pH values lie slightly in the alkaline side, with a range of 7.53 to 8.12, salinity showed a slightly variation, it ranged from 35.34 to 38.28 PSU, the values of dissolved oxygen were fluctuated between 4.77 and 11.13 mgl-1. The annual average of nutrients (μM) was as follow: (7.97 ± 1.72), (0.66 ± 0.14), (2.18 ± 0.73), (0.37± 0.09) and (12.42 ± 4.04) for nitrate, nitrite, ammonium, reactive phosphate and silicate, respectively. Relatively high levels of Chl-a concentrations was recorded during the period of study ranged from 0.38 to 6.96µgl-1 and a positive correlation was found between Chl-a and both NO3, NH4, PO4 and SiO4 (r= 0.383, 0.303, 0.213 and 0.341, respectively). Very high values of N/P ratio were recorded during the study period, this consideration showed that Phosphorus was limiting factor in the study area.
    VL  - 3
    IS  - 4
    ER  - 

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