Thesis Abstract

Abstract
This thesis investigates the impact of microplastics on freshwater ecosystems, focusing on the potential environmental and ecological consequences of microplastic pollution in these vital habitats. The presence of microplastics in freshwater environments has raised concerns worldwide due to their persistence, ubiquity, and potential to harm aquatic organisms and disrupt ecosystem functioning. This study aims to provide a comprehensive understanding of the sources, distribution, fate, and effects of microplastics in freshwater ecosystems, with a particular emphasis on the implications for biodiversity and ecosystem health. The introductory chapter sets the stage for the research by presenting the background of the study, problem statement, research objectives, limitations, scope, significance, and defining key terms related to microplastic pollution in freshwater ecosystems. Chapter two conducts a thorough literature review, examining existing studies on microplastics in freshwater environments, including their sources, transport mechanisms, ecological impacts, and mitigation strategies. The literature review synthesizes current knowledge and identifies research gaps that this study seeks to address. Chapter three outlines the research methodology employed in this study, detailing the sampling and analysis techniques used to assess microplastic contamination in freshwater ecosystems. The methodology includes field sampling protocols, laboratory analyses, data interpretation methods, and statistical approaches to quantify and characterize microplastic pollution in water bodies and sediments. Chapter four presents the findings of the study, discussing the distribution patterns, types, sizes, and concentrations of microplastics in freshwater ecosystems. The results highlight the prevalence of microplastic pollution in various freshwater habitats and assess the potential risks posed to aquatic organisms and ecosystem integrity. Additionally, this chapter explores the interactions between microplastics and biota, as well as the implications for food webs and ecological processes in freshwater environments. The concluding chapter summarizes the key findings of the study, discusses their implications for freshwater ecosystems, and offers recommendations for future research and conservation efforts. The study underscores the urgent need for sustainable management practices to reduce microplastic contamination in freshwater environments and protect these vital ecosystems from the detrimental effects of plastic pollution. In conclusion, this thesis contributes to the growing body of knowledge on microplastics in freshwater ecosystems and provides valuable insights into the ecological impacts of this pervasive environmental stressor. By shedding light on the sources, fate, and effects of microplastics in freshwater environments, this study aims to inform evidence-based management strategies and policy interventions to safeguard the health and integrity of freshwater ecosystems for current and future generations.

Thesis Overview