Assessing the Impact of Different Pollution Sources on the Type of Microplastics, Associated Microbial Communities, Antimicrobial Resistance and Transport of Microplastics in Selected Urban Rivers in South Africa Assessing the Impact of Different Pollution Sources on the Type of Microplastics, Associated Microbial Communities, Antimicrobial Resistance and Transport of Microplastics in Selected Urban Rivers in South Africa Posted in .