Prof. Md. Nazrul Islam : IAGR Conference 2024
Professor, Department of Geography and Environment, Jahangirnagar University, Bangladesh
Dr. Md. Nazrul Islam is a permanent Professor in the Department of Geography and Environment at Jahangirnagar University, Savar, Dhaka-1342, Bangladesh. He graduated with a B.Sc. (Honors) and an M.Sc. (Thesis) both securing 1st Class 1st Position from the Department of Geography and Environment at Jahangirnagar University in 1997 and 1998, respectively. He later completed partial credits for a second M.Sc. in Environmental Sciences (Environmental Systems Analysis Group) from Wageningen University and Research Centre, The Netherlands, in 2008. Dr. Nazrul was awarded a Ph.D. in Environmental Systems Modeling from the University of Tokyo, Japan, in 2012. Additionally, he completed a two-year JSPS Postdoctoral Research Fellowship in Marine Ecosystems Engineering at the University of Tokyo from 2012 to 2015.
Prof. Nazrul’s research interests include environmental and ecological modeling of climate change impacts on aquatic ecosystems, phytoplankton transition, harmful algae, and marine ecosystems. He specializes in hydrodynamic ecosystem models for coastal seas, bays, and estuaries, as well as the application of computer-based programming for numerical simulation modeling. He is recognized for his expertise in developing models for environmental systems analysis research. Prof. Nazrul has been an invited speaker and visiting faculty member at numerous universities worldwide, including those in Japan, the USA, Australia, the UK, Canada, China, South Korea, Germany, France, the Netherlands, Belgium, India, Taiwan, Malaysia, Singapore, and Vietnam.
Prof. Nazrul has received several prestigious awards, including the “Best Young Researcher Award 2012” by the International Society of Ecological Modeling (ISEM) for his outstanding contributions to the field of ecological modeling, and the “Best Paper Presenter Award 2010” in Kyoto, Japan. He also received the “Best Poster Presenter Award 2010” at the Techno Ocean Conference in Kobe, Japan, and the “Young Scientist Financial Award” at the IOC/WESTPAC science conference in Busan, South Korea, in 2010. He has made over 40 scholarly presentations in more than 20 countries and has authored over 160 peer-reviewed articles and 17 books and research volumes.
Title of Talk:
Modeling of Predicting the Pollutant Impact on Aquaculture in Brackish-water Lake and Coastal Continental Shelf Ecosystems
Abstract:
The research aimed to investigate the impact of aquaculture practices on the ecosystem of Northern Bay of Bengal in Bangladesh continental shelf in Bangladesh and the brackish-water Lake in Japan to assimilate different ecological parameter; pollutants and nutrients concentration regarding phytoplankton transition and harmful algal blooms in study sites. Coupling Ecopath with Ecosim and a 3-D hydrodynamic higher ecosystem model were employed to simulate the nutrients trends, phytoplankton transition, shrimp farming and its impact on the aquaculture. The analysis helps to identify as non-controlled shrimp aquaculture zone is depicted as controlled zone in the coast of Bay of Bengal. The Bay of Bengal shows chl-a, phytoplankton, biomass production concentration depict as 0.49 mg m-3, 1.92 mmol m-3, 19.38 mg m-3 day-1v respectively. After that, the study builds the trophic model of Northern Bay of Bengal with shows 5 trophic level where the ecological groups (consumer, producer, detritus) interacts in positive and negative aspect and balance the ecosystem. On the other, the brackish-water lake Kasumigaura in Japan, longer periods of stratification, lower concentration of dissolved oxygen, and higher concentration of dissolved nitrogen and phosphorus were observed summer, while the sudden increase in Planktothrix biomass in winter. Low dissolved oxygen (DO) enhances the release of nutrients from sediment and increase dissolved inorganic phosphorus (DIP) concentration. The models predicted that the concentration of pollutants from shrimp aquaculture, river flow and land-based anthropogenic behaviors are affected by the dominant algae growth, nutrients limited condition and toxin decay coefficient.
Keywords: Bay of Bengal, Shrimp Aquaculture, Phytoplankton, Kasumigaura Lake, Simulation
