Thesis Abstract

**Abstract
** Microplastic pollution has become a significant environmental concern in freshwater ecosystems, with potential adverse effects on aquatic life and human health. This thesis presents a comprehensive assessment of microplastic pollution in freshwater ecosystems, aiming to enhance our understanding of the sources, distribution, and impact of microplastics in these vital environments. The study utilized a combination of field surveys, laboratory analysis, and data modeling to investigate the presence and characteristics of microplastics in freshwater bodies. The research findings revealed that microplastic pollution is widespread in freshwater ecosystems, with various types and sizes of microplastics detected in water samples, sediments, and aquatic organisms. The sources of microplastics were found to be diverse, including urban runoff, industrial discharges, and plastic debris fragmentation. The distribution of microplastics varied across different freshwater habitats, with higher concentrations observed in urbanized areas and downstream regions. Through a detailed analysis of the research data, this thesis highlights the potential ecological and human health risks associated with microplastic pollution in freshwater ecosystems. The presence of microplastics in aquatic organisms raises concerns about bioaccumulation and biomagnification of these contaminants in the food chain. Additionally, the interactions between microplastics and chemical pollutants in the environment may exacerbate the toxicity effects on aquatic organisms. The research methodology employed in this study involved the development of standardized sampling protocols, laboratory techniques for microplastic analysis, and statistical tools for data interpretation. The thesis discusses the challenges and limitations encountered during the research process, including the complexities of microplastic identification and quantification in environmental samples. In conclusion, this thesis emphasizes the urgent need for proactive measures to mitigate microplastic pollution in freshwater ecosystems. Effective strategies for waste management, pollution control, and public awareness are essential to minimize the input of microplastics into freshwater environments. The significance of this research lies in its contribution to the growing body of knowledge on microplastic pollution and its implications for ecosystem health and sustainability. Keywords Microplastic pollution, Freshwater ecosystems, Environmental contamination, Ecological risks, Human health, Research methodology.

Thesis Overview

The project titled "Assessment of Microplastic Pollution in Freshwater Ecosystems" aims to investigate the prevalence, distribution, and impact of microplastic pollution in freshwater environments. Microplastics, defined as plastic particles less than 5mm in size, have emerged as a significant environmental concern due to their widespread presence and potential adverse effects on aquatic ecosystems and organisms. The research overview will involve a comprehensive assessment of microplastic contamination in various freshwater bodies such as rivers, lakes, and streams. The study will utilize a combination of field sampling, laboratory analysis, and data interpretation to quantify the abundance and characteristics of microplastics in these ecosystems. By examining different sampling sites with varying levels of anthropogenic influence, the project aims to identify sources and pathways of microplastic pollution in freshwater environments. Furthermore, the research will explore the potential ecological and human health implications of microplastic contamination in freshwater ecosystems. By conducting toxicity tests on aquatic organisms exposed to microplastics and assessing the bioaccumulation of these particles in the food chain, the study seeks to understand the broader environmental consequences of microplastic pollution. In addition to the scientific investigations, the project will also consider the socio-economic aspects of microplastic pollution in freshwater ecosystems. Through stakeholder engagement, public awareness campaigns, and policy recommendations, the research aims to raise awareness about the issue of microplastic contamination and promote sustainable management practices to mitigate its impact on freshwater environments. Overall, the project "Assessment of Microplastic Pollution in Freshwater Ecosystems" seeks to contribute valuable insights into the extent of microplastic pollution in freshwater ecosystems, its ecological and human health implications, and potential strategies for addressing this pressing environmental issue.