Aknowledgment

At first, all my admiration goes to the supreme creator and Ruler of the universe, the Almighty Allah for His great mercy to keep me alive and enables me to pursue my education in Fisheries and Marine Resource Technology Discipline as well as to complete my work for the degree of Master of Science in Coastal and marine Science. I would like to express my sincere gratitude and profound appreciation to my honorable supervisor, Mohammad Abdur Rouf, Professor and Head, Fisheries and Marine Resource Technology Discipline, for his continuous guidance, valuable suggestions, critical observations and sustained support in writing this thesis. I recall with warm appreciation and great indebtedness or the support, guidance and suggestions extended to me by all my respected teachers in Fisheries and Marine Resource Technology Discipline, Khulna University. I would also like to give special thanks to Bangladesh Navy for collecting water samples from the Bay of Bengal with the ship BNS Turag. I am thankful to Mr. Aminul Islam, a geo-specialist consultant of WorldBank, for his continuous support to work in ArcGIS tools. Special thanks go friends Zareen Afroje for his support for completing my thesis work in laboratory. I would thank to thank Mr. Hriday Molla, a graduate student of Urban and rural Planning Discilpine for his support. I specially thank to my senior Al-Hasan Antu, a post-graduate student of Khulna university for giving me necessary direction to complete my thesis. I would like to acknowledge Khulna University Research Cell (KURC)for their essential supports.I would also like to thank the Ministry of Science and Technology for nominating me National Science and Technolgy (NST) fellowship for this work. Finally, I would like to express my very profound gratitude to my parents for all care, unfailing support and continuous encouragement throughout my study. This accomplishment would not have been possible without them.