Thesis Abstract

Abstract
Microplastics, small plastic particles less than 5 millimeters in size, have become a significant environmental concern due to their widespread presence in aquatic ecosystems. This thesis investigates the impact of microplastics on freshwater ecosystems, focusing on their effects on water quality, aquatic organisms, and overall ecosystem health. The study employs a multidisciplinary approach, combining field surveys, laboratory experiments, and data analysis to assess the extent of microplastic pollution and its ecological consequences. The introduction provides background information on microplastics, highlighting their sources, distribution, and potential risks to freshwater ecosystems. The problem statement emphasizes the urgent need to address microplastic pollution and its impacts on aquatic biodiversity. The objectives of the study include quantifying microplastic concentrations in water and sediment samples, evaluating their effects on aquatic organisms, and assessing potential mitigation strategies. Methodologies employed in this research encompass field sampling techniques, laboratory analyses, and statistical modeling to investigate the presence and distribution of microplastics in freshwater environments. The research methodology section outlines the sampling locations, sample collection methods, analytical techniques, and data interpretation approaches used in the study. The literature review synthesizes current knowledge on microplastic pollution in freshwater ecosystems, highlighting key findings from previous studies and identifying gaps in the existing literature. The discussion of findings chapter presents the results of the field surveys and laboratory experiments, analyzing the impacts of microplastics on water quality parameters, aquatic organisms, and ecosystem functioning. The study reveals that microplastics are pervasive in freshwater ecosystems, with implications for water quality, biodiversity, and ecosystem health. High concentrations of microplastics were found in water and sediment samples, posing risks to aquatic organisms through ingestion and bioaccumulation. The discussion chapter explores the ecological implications of microplastic pollution and discusses potential management strategies to mitigate its impacts. In conclusion, this thesis contributes to our understanding of the impact of microplastics on freshwater ecosystems and highlights the need for further research and effective management measures to address this growing environmental threat. The study underscores the importance of monitoring and controlling microplastic pollution to safeguard the health and integrity of freshwater ecosystems for future generations.

Thesis Overview