Indian Wetlands as Critical Habitats for Avian Diversity: Climate Change Impacts and Conservation Perspectives

Abstract

Background: Wetlands are among the most productive ecosystems on Earth and provide essential habitats for resident and migratory birds. In India, wetlands support considerable avian diversity and contribute to ecological stability, biodiversity conservation, and ecosystem services. However, anthropogenic pressure and climate change are accelerating wetland degradation, creating serious risks for bird populations and wetland health. Aim: This review examines the importance of Indian wetlands for avian diversity and evaluates climate change impacts and conservation strategies affecting wetland-dependent bird communities. Methodology: Published scientific literature, government reports, and policy documents were reviewed to synthesise information on avian diversity, ecological drivers, climate-related threats, and conservation measures associated with Indian wetlands. Results and Discussion: Indian wetlands provide breeding, feeding, nesting, roosting, and wintering habitats for many resident and migratory bird species. Avian diversity is shaped by climatic conditions, hydrological regimes, habitat structure, food availability, and anthropogenic activities. Climate change, habitat loss, pollution, urbanisation, agricultural expansion, and hydrological alterations have affected wetland ecosystems and bird populations by modifying habitat quality, migration patterns, and reproductive success. Birds also serve as important bioindicators of wetland health and ecological integrity. Conservation initiatives, including the Wetlands (Conservation and Management) Rules, 2017, and international frameworks such as the Ramsar Convention, contribute to wetland protection, although implementation remains challenging. Conclusion: Indian wetlands are essential for maintaining avian biodiversity and ecosystem functioning. Habitat conservation, wetland restoration, climate-resilient management, and long-term ecological monitoring should be strengthened to safeguard wetland ecosystems and their avifaunal communities.