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The following research was conducted to study the concentration of Ni and Cd in skeletons and sediments of dominant hard corals families (Faviidae and Poritidae) in Zeyton Park, Naz Islands and Shib-deraz stations, South of Qeshm Island- Persian Gulf. The analysis of these heavy metals in digested samples of skeletons and sediments was done applying Graphite furnace Atomic Absorbtion Spectophotometry for measuring the levels of Cd and Flame Atomic Absorbtion Spectophotometry for measuring the levels of Ni. The results indicated that there are significant statistical differences toward concentration of Ni in skeletons of corals families (Faviidae and Poritidae) among Zeyton Park, Naz Islands Shib-deraz stations (P<0.001). Moreover, in terms of Cd concentration in skeleton tissue of Favidae coral, there are significant differences among Zeyton Park, Naz Islands and Shib-deraz stations (P<0.001). In addition, considering the concentration of Ni and Cd in sediments of corals families (Favidae and Poritidae) there are significant differences between Zeyton Park, Naz Islands and Shib-deraz stations stations (P<0.05 and P<0.001 respectively). There is negative correlation between Ni concentration in Favidae corals and its surrounding sediments in Shib-deraz stations. Besides, there is statistical correlation of Cd concentration between corals families (Faviidae and Poritidae) in each stations. Long term pollution monitoring by heavy metals is of great importance in managing coastal areas. So, concerning the immense importance of coral ecosystem in southern Qeshm Islands and the result of this research, corals can be suggested as a pollution biomonitor.
Key words: Heavy metals, Nickel, Cadmium, Coral, Sediment, Qeshm Islands, Persian Gulf
Faculty of Science
Bioaccumulation of Heavy Metals(Ni, Cd) in Skeletons and Sediments of dominant Hard Corals in south of Qeshm Island- Persian Gulf
Under Supervision of:
Professor Alireza Riyahi Bakhtiari
A thesis submitted to the Graduate Studies Office In partical fulfillment of the requirements for The degree of Master of Scince in Marine Biology
1 parts per thousand
2 Group of Experts on the Scientific Aspects of Marine Environmental Protection
3 Heavy metals
10 Coral Reefs
11 United Nations Environment Programme
13 Reef-Building Corals
14 Up wellig
15 Patch Reefs
16 Bank Reefs
17 Barrier Reefs
18 Fringing Reefs
35 Paliform crown
41 Surface Sea Temperature
44 Self Contained Underwater Breathing Apparatus
45 Global Positioning System
46 Stereo microscope
47 Multi meter
48 Micro pipette
49 Disposable plastic tip
50 Micro tube
51 Poly Tetra Fluoro Ethylene
54 Atomic Absorbtion Spectophotometry
55 Anonodic Stripping Voltametry
56 Emission Spectroscopy
57 X- Ray Fluorescence
60 Graphite furnace
62 Ionization limitation
63 Chemical limitation
64 Graphite furnace atomic absorbtion
65 Flame atomic absorbtion
66 ppm (part per million)
67 ppb (part per billion)
74 Standard Deviation
76 One-Way Anova
77 Practical Salinity Unit
78 Anti fouling
81 Polycyclic Aromatic Hydrocarbons