Do not throw garbage (both degradable and biodegradable). Leads to:eutrophication (nutritional enrichment of wetland water)low sunlight for organisms within lower reachesdying of the organisms within the wetlandbad and poisonous food for waterbirds (plastic kills)really stinky air for youcontamination of ground waterObserve the living organisms visiting the wetland - birds, mammals, reptiles, fish. Collect data as to when was the last time you saw them, what do they eat, their behaviour, the prevalent weather during the time of observationMake aware the people around you about the benefits of having a healthy wetland and its associated biodiversity around you. You could write a blog or share articles of reliable sources.Advocate better management of wetlands through critical analysis of state and central government laws and policies, proposing amendmentsBe yourself aware of the best practices for wetland management; could be a traditional knowledge or a new technology. Most often you need to understand the biology, hydrology, economics and policies related to wetland management.If you are still in school, you could find a career matching to your interest for wetland management. Studying botany, chemistry, zoology, physics, engineering, sociology, computer science, economics etc. can lead to a career for studying wetlands. There are now courses or environmental studies and natural resource management. You could do journalism or film-making courses for a different medium of approaching the issues.