which of the effects of irrigation on the world's environment is a criticism of using reservoirs

Answer 1

One of the criticisms of using reservoirs for irrigation is the negative impact on ecosystems and biodiversity. Reservoirs alter natural water flow patterns, leading to the flooding of large areas of land and the creation of artificial lakes. As a result, this can lead to the displacement or loss of habitats for various species, including plants, animals, and aquatic organisms.

Additionally, the construction of reservoirs often involves clearing large areas of land and deforestation, which can further contribute to habitat destruction and fragmentation. This can result in the loss of native species and disrupt the overall balance of ecosystems.

Furthermore, the impoundment of water in reservoirs can lead to changes in water temperatures, leading to thermal pollution. Warmer water can negatively impact aquatic life, including fish and other organisms that are sensitive to temperature changes.

Moreover, reservoirs require the flooding of valleys or river valleys, which can lead to the displacement of local communities and loss of cultural heritage. The construction of reservoirs may also require the relocation of people living in the area, which can have adverse social and economic consequences for these communities.

Overall, the construction and use of reservoirs for irrigation have various environmental impacts that have been criticized for their negative effects on ecosystems, biodiversity, and local communities.