Environment & Ecology2014
Other than poaching, what are the possible reasons for the decline in the population of Ganges River Dolphins?
- Construction of dams and barrages on rivers
- An increase in the population of crocodiles in rivers.
- Getting trapped in fishing nets accidentally
- Use of synthetic fertilisers and other agricultural
chemicals in crop-fields in the vicinity of rivers. Select the correct answer using the code given below.
Explanation
The correct answer is 1, 3, and 4 only. The construction of dams and barrages disrupts the natural flow of rivers, leading to habitat fragmentation for Ganges River Dolphins. Additionally, accidental entrapment in fishing nets poses a significant threat to their survival, while the use of synthetic fertilizers and agricultural chemicals can lead to water pollution, adversely affecting their health and food sources. These factors collectively contribute to the decline of this endangered species, highlighting the interconnectedness of freshwater ecosystems and the impacts of human activity on biodiversity.