Chapter 3 - Impact of environmental changes and human activities on bacterial diversity of lakes

Abstract

Environmental changes and human activities and bacterial diversity in lakes are the related perspectives in different ecosystems. The chapter starts with a general introduction about the title followed by a discussion on the association between environmental variables, climate change, socioeconomic factors, and bacterial diversity in lakes. Bacterial processes in aquatic ecosystems show substantial spatiotemporal variability in response to the changes in environmental factors and human activities. It gives a detailed explanation of correlation between the bacterial diversity and the various environmental variables such as temperature, pH, salinity, total dissolved solids, dissolved oxygen, alkalinity, nutrient concentrations (nitrogen and phosphorus), biological oxygen demand, and chemical oxygen demand. It further highlights the anthropogenic influence and change in socioeconomic conditions on the structure and function of bacterial community composition, which lead the entry of pathogenic bacteria into the lakes. The chapter concludes with a discussion about the fecal contamination of surface water and advances in microbial identification and contamination followed by some brief concluding remarks.