Aquatic plants in the Hurbanovsky canal were studied to see how human activities affect them. The researchers looked at different factors like the type of land use and how far the canal is from sewage and farm runoff. They found that the type of land use, especially urban areas, had the biggest impact on the plants. The distance from sewage and farm runoff also had some effect on the plants in the canal. Overall, human activities can change the types of plants that grow in the water.