Halogen and oxyanion variability in marine algae: A study in the St. Martin’s Island, Bangladesh Swachsa Rahman, Arnob Ghosh, Md. Biplob Hasan, Moniruzzaman Khondker, Fateeha Noor, et al. Oceanological and Hydrobiological Studies, 2026 Halogens and oxyanions play essential roles in marine biogeochemical cycles, yet studies on their distribution in algae remain extremely limited. This work provides the first baseline profile of these ions in the macro- and microalgae of St. Martin’s Island, Bangladesh. Eight species representing Chlorophyta, Phaeophyta, Rhodophyta, and Cyanophyta were collected during the post-monsoon period, when algal abundance is highest. Anion measurements were carried out using ion chromatography. Chloride and sulfate were consistently present across all species, with chloride ranging from 3.83 mg·g−1 to 23.94 mg·g−1 and reaching its highest level in Ceramium fastigiatum, while sulfate ranged from 2.88 mg·g−1 to 21.35 mg·g−1 and peaked in Padina tenuis. Fluoride was generally below detection except in Lyngbya confervoides (0.10 mg·g−1) and two red macroalgae, including Hypnea boergesenii (3.83 mg·g−1). Nitrate accumulation varied among species, with L. confervoides showing the lowest level (0.06 mg·g−1) and Cladophora echinus the highest (0.32 mg·g−1). As an exploratory dataset, the study documents only the post-monsoon ion patterns and does not capture seasonal or fine-scale spatial variability. Even within this scope, the findings fill a critical regional gap and offer an initial biochemical reference for future ecological assessments and environmental monitoring programs around St. Martin’s Island.
Heavy metal pollution in the sundarbans mangrove ecosystem: a growing environmental concern Arnob Ghosh, Md. Kamal Hossain, Kowshik Das Karmaker, Md. Zuel Rana, Md. Jobaer Alam, Abu Hena Muhammad Yousuf, Shamiha Shafinaz Shreya, Mahfujur Rahman, Afsana Hamid, Afroza Parvin, Mohammad Moniruzzaman, Mohammad Abdul Momin Siddique, Mahmudul Hasan Journal of Hazardous Materials Advances, 2025
From beaches to mangroves: Spatiotemporal mapping and risk profiling of microplastics in coastal Bangladesh J Tasnim, MS Hossain, A Ghosh, S Rahman, M Hasan, MAM Siddique Marine Pollution Bulletin 227, 119494 , 2026 2026
Marine Invertebrates as Ecological Integrators of Microplastic Pollution: Trait-Based Evidence from Coastal Bangladesh S Rahman, S Das, AY Ahammad, A Ghosh, MM Rahman, MB Hasan, ... Regional Studies in Marine Science, 105062 , 2026 2026
Halogen and oxyanion variability in marine algae: A study in the St. Martin’s Island, Bangladesh S Rahman, A Ghosh, MB Hasan, M Khondker, F Noor, MS Islam, ... Oceanological and Hydrobiological Studies 55 (1), 13-27 , 2026 2026
Comparative Assessment of Toxic Heavy Metals Contamination in Farmed and Wild Fish in Bangladesh, and Implications for Human Health N Akter, U Das, MR Acharjee, MM Rahman, A Ghosh, H Khatoon, ... Biological Trace Element Research, 1-16 , 2026 2026
Species-Specific Bioaccumulation of Toxic Metals in Coastal Seaweeds from the Northeast Bay of Bengal: Implications for Human Health Risk MB Hasan, MM Rahman, A Ghosh, S Rahman, M Hasan, ... Regional Studies in Marine Science, 104841 , 2026 2026 Citations: 1
Comparative assessment of nutritional quality and ecotoxicological biomarkers in Paphia textile clams from the coastal areas in Egypt AH El-Gendy, MM Rahman, A Ghosh, MS Islam, AA Alkahtane, S Al Farraj, ... Regional Studies in Marine Science, 104495 , 2025 2025 Citations: 1
Heavy metal pollution in the sundarbans mangrove ecosystem: a growing environmental concern A Ghosh, MK Hossain, KD Karmaker, Z Rana, MJ Alam, AHM Yousuf, ... Journal of Hazardous Materials Advances, 100887 , 2025 2025 Citations: 5
Plankton Community Dynamics in the Pasur River Estuary: Correlations with Physicochemical Parameters, Nutrients, and Chlorophyll-a S Rahman, MB Hasan, A Ghosh, M Khondker, MM Rahman, J Tasnim, ... The Dhaka University Journal of Earth and Environmental Sciences 14 (2), 177-191 , 2025 2025
First assessment of trace metals in the intertidal zone of the world's longest continuous beach, Cox's Bazar, Bangladesh KD Karmaker, N Khan, US Akhtar, M Moniruzzaman, A Parvin, A Ghosh, ... Marine Pollution Bulletin 207, 116928 , 2024 2024 Citations: 22
Trace element contamination in water and sediment in an estuarine ecosystem connected to the Bay of Bengal: A preliminary assessment of ecological and human health risks A Ghosh, KD Karmaker, M Hasan, M Rahman, NJ Shimu, MS Islam, ... Marine Pollution Bulletin 207, 116897 , 2024 2024 Citations: 27
A Note on Marine and Estuary Fish Habitat, Prices and Supply in Different Markets of Dhaka City MK Islam, A Ghosh, M Kamrujjaman The Agriculturists 17 (1-2), 112-120 , 2019 2019
MOST CITED SCHOLAR PUBLICATIONS
Trace element contamination in water and sediment in an estuarine ecosystem connected to the Bay of Bengal: A preliminary assessment of ecological and human health risks A Ghosh, KD Karmaker, M Hasan, M Rahman, NJ Shimu, MS Islam, ... Marine Pollution Bulletin 207, 116897 , 2024 2024 Citations: 27
First assessment of trace metals in the intertidal zone of the world's longest continuous beach, Cox's Bazar, Bangladesh KD Karmaker, N Khan, US Akhtar, M Moniruzzaman, A Parvin, A Ghosh, ... Marine Pollution Bulletin 207, 116928 , 2024 2024 Citations: 22
Heavy metal pollution in the sundarbans mangrove ecosystem: a growing environmental concern A Ghosh, MK Hossain, KD Karmaker, Z Rana, MJ Alam, AHM Yousuf, ... Journal of Hazardous Materials Advances, 100887 , 2025 2025 Citations: 5
Species-Specific Bioaccumulation of Toxic Metals in Coastal Seaweeds from the Northeast Bay of Bengal: Implications for Human Health Risk MB Hasan, MM Rahman, A Ghosh, S Rahman, M Hasan, ... Regional Studies in Marine Science, 104841 , 2026 2026 Citations: 1
Comparative assessment of nutritional quality and ecotoxicological biomarkers in Paphia textile clams from the coastal areas in Egypt AH El-Gendy, MM Rahman, A Ghosh, MS Islam, AA Alkahtane, S Al Farraj, ... Regional Studies in Marine Science, 104495 , 2025 2025 Citations: 1
From beaches to mangroves: Spatiotemporal mapping and risk profiling of microplastics in coastal Bangladesh J Tasnim, MS Hossain, A Ghosh, S Rahman, M Hasan, MAM Siddique Marine Pollution Bulletin 227, 119494 , 2026 2026
Marine Invertebrates as Ecological Integrators of Microplastic Pollution: Trait-Based Evidence from Coastal Bangladesh S Rahman, S Das, AY Ahammad, A Ghosh, MM Rahman, MB Hasan, ... Regional Studies in Marine Science, 105062 , 2026 2026
Halogen and oxyanion variability in marine algae: A study in the St. Martin’s Island, Bangladesh S Rahman, A Ghosh, MB Hasan, M Khondker, F Noor, MS Islam, ... Oceanological and Hydrobiological Studies 55 (1), 13-27 , 2026 2026
Comparative Assessment of Toxic Heavy Metals Contamination in Farmed and Wild Fish in Bangladesh, and Implications for Human Health N Akter, U Das, MR Acharjee, MM Rahman, A Ghosh, H Khatoon, ... Biological Trace Element Research, 1-16 , 2026 2026
Plankton Community Dynamics in the Pasur River Estuary: Correlations with Physicochemical Parameters, Nutrients, and Chlorophyll-a S Rahman, MB Hasan, A Ghosh, M Khondker, MM Rahman, J Tasnim, ... The Dhaka University Journal of Earth and Environmental Sciences 14 (2), 177-191 , 2025 2025
A Note on Marine and Estuary Fish Habitat, Prices and Supply in Different Markets of Dhaka City MK Islam, A Ghosh, M Kamrujjaman The Agriculturists 17 (1-2), 112-120 , 2019 2019
