{"id":93270,"date":"2026-03-17T17:19:28","date_gmt":"2026-03-17T11:49:28","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=93270"},"modified":"2026-03-17T17:19:28","modified_gmt":"2026-03-17T11:49:28","slug":"wetland-ecosystems","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/wetland-ecosystems\/","title":{"rendered":"Wetland Ecosystems, Types, Significance, Threats, Importance"},"content":{"rendered":"<p><b>Wetland Ecosystems<\/b><span style=\"font-weight: 400;\"> are areas where land is covered with water either <\/span><b>permanently or seasonally, such as marshes, swamps, and mangroves.<\/b><span style=\"font-weight: 400;\"> They support a wide variety of plants and animals and play an important role in maintaining ecological balance. Wetlands also help in water purification, flood control, and provide habitat for wildlife, making them valuable natural resources.<\/span><\/p>\n<h2><b>About Wetland<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wetlands are areas of land that lie between terrestrial (land) and aquatic (water) ecosystems, meaning they are neither completely dry nor fully covered with water. According to the <\/span><b>International Union for Conservation of Nature<\/b><span style=\"font-weight: 400;\">, wetlands are lands that are submerged or saturated with water. They can be natural or man-made, permanent or temporary, and may contain still or flowing water that can be fresh, brackish, or salty. It also includes shallow marine areas where the water depth does not exceed 6 meters during low tide. Examples include <\/span><b>mangroves, lake littoral zones, floodplains, and other marshy or swampy areas.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The<\/span><b> Ramsar Convention on Wetlands<\/b><span style=\"font-weight: 400;\"> defines wetlands as:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">areas of marsh, fen, and peatland, whether natural or artificial, permanent or temporary, with water that is fresh, brackish, or salt, including areas of marine water where the depth at low tide does not exceed 6 meters.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><b>Major Types of Wetlands<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Swamps:<\/b><span style=\"font-weight: 400;\"> Swamps are wetlands that remain filled with water most of the time and are mainly covered with trees. They are of two types:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Freshwater Swamps:<\/b><span style=\"font-weight: 400;\"> These develop on flat land near lakes or rivers where water collects easily and does not flow away quickly. The soil stays wet, allowing plants like cattails, lotus, and cypress to grow well. Such swamps are commonly found in tropical regions near the Equator.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Saltwater Swamps:<\/b><span style=\"font-weight: 400;\"> These form in coastal areas where land is regularly covered by seawater during high tides. The water here is brackish (a mix of saltwater and freshwater). A famous example is the Sundarbans, which has the largest mangrove forest in the world.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Marshes:<\/b><span style=\"font-weight: 400;\"> Marshes are wetlands dominated by grasses and soft plants rather than trees. They are usually found along river mouths, coastlines, and bays, and are often flooded and exposed due to tides. They are of two types:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Freshwater Marshes:<\/b><span style=\"font-weight: 400;\"> These are found away from the sea, often around lakes and rivers. They are mainly covered with grasses and aquatic plants. Many such marshes are located in the prairie regions of North America.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Saltwater Marshes:<\/b><span style=\"font-weight: 400;\"> These are very rich in biodiversity. They are mostly covered with grasses and algae and provide habitat for many organisms like fish, shellfish, amphibians, and reptiles. Sometimes a few mangrove trees may also be present.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Bogs:<\/b><span style=\"font-weight: 400;\"> Bogs are wetlands usually found in colder regions like North America, Europe, and Asia. They develop in areas where water collects and does not drain easily. Over time, dead plant material builds up and forms a thick layer called peat. The soil in bogs is more acidic and less fertile compared to other wetlands. Because of this, fewer types of plants and animals are found here, so biodiversity is lower than in swamps and marshes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Fen:<\/b><span style=\"font-weight: 400;\"> Fens are wetlands that have a high level of nutrients. They mainly develop in areas where water comes from rainfall. This regular supply of water helps maintain moisture and supports the growth of different types of vegetation.<\/span><\/li>\n<\/ul>\n<h2><b>Significance of Wetland Ecosystems<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Water Regulation:<\/b><span style=\"font-weight: 400;\"> Wetlands help control the flow and storage of water. They absorb excess rainwater during heavy rainfall and release it slowly, which reduces the chances of floods. They also play an important role in recharging groundwater.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Erosion Control and Land Formation:<\/b><span style=\"font-weight: 400;\"> Wetlands reduce soil erosion by slowing down the movement of water. They help in the transport and deposition of sediments, which supports land formation and protects coastal and river areas from storm damage.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Water Security and Climate Protection:<\/b><span style=\"font-weight: 400;\"> Wetlands improve the availability and quality of water. They act as natural buffers against floods and storms and help communities adapt to the impacts of climate change.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>High Productivity and Biodiversity:<\/b><span style=\"font-weight: 400;\"> Wetlands are among the most productive ecosystems in the world. They support a large variety of plants and animals and have high nutrient recycling, which helps maintain ecological balance.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Habitat for Birds and Wildlife:<\/b><span style=\"font-weight: 400;\"> Wetlands provide an important habitat for many species, especially waterbirds and migratory birds. These areas are used for feeding, breeding, and resting during long migrations across regions and continents.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Source of Food and Livelihood: <\/b><span style=\"font-weight: 400;\">Wetlands are an important source of food such as fish, shellfish, and rice. They support fisheries and aquaculture, providing livelihood to many people. They also help in maintaining soil fertility and natural pest control.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ecological Support Functions:<\/b><span style=\"font-weight: 400;\"> Wetlands support important ecological processes like nutrient cycling and regulation of pests and diseases. These functions help in maintaining the overall health of ecosystems.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Cultural and Recreational Value:<\/b><span style=\"font-weight: 400;\"> Wetlands have cultural, historical, and religious importance in many societies. They are also popular for recreational activities like bird watching, fishing, photography, and nature walks.<\/span><\/li>\n<\/ul>\n<h2><b>Threats to Wetland Ecosystem<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Changes in Water Flow (Hydrological Regime):<\/b><span style=\"font-weight: 400;\"> Wetlands depend on a proper flow and availability of water. Changes like reduced water supply, irregular flooding, and loss of connection with nearby water bodies can harm wetland ecosystems. These changes affect biodiversity and disturb important processes like nutrient exchange.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Catchment Area Degradation:<\/b><span style=\"font-weight: 400;\"> When the surrounding land (catchment area) is damaged due to deforestation, construction, or soil erosion, it reduces the ability of wetlands to store water. This weakens the overall health and functioning of the wetland.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Invasive Species:<\/b><span style=\"font-weight: 400;\"> Many wetlands in India are affected by non-native or exotic species that grow rapidly and disturb the natural ecosystem. For example, water hyacinth spreads quickly and blocks sunlight and oxygen, harming other plants and aquatic life.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Overuse of Resources:<\/b><span style=\"font-weight: 400;\"> Unsustainable use of wetland resources like excessive fishing, plant harvesting, and overgrazing by animals can damage the ecosystem and reduce its productivity.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Excessive Water Extraction: <\/b><span style=\"font-weight: 400;\">Taking too much water from wetlands for agriculture, industry, or domestic use lowers water levels and disturbs the natural balance of the ecosystem.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Mining Activities:<\/b><span style=\"font-weight: 400;\"> Activities like sand, salt, or laterite mining in and around wetlands damage their structure and reduce their ecological value.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Pollution and Urbanization (Additional Threat):<\/b><span style=\"font-weight: 400;\"> Discharge of sewage, industrial waste, and chemicals into wetlands pollutes the water. Rapid urban development also leads to encroachment and loss of wetland areas.<\/span><\/li>\n<\/ul>\n<h2><b>India\u2019s Wetlands of International Importance<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">India has a wide variety of wetlands and a large number of them. This diversity is due to differences in rainfall, landforms, climate, and physical features across the country. Each wetland is unique and plays an important role in the environment.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">India became a member of the <\/span><b>Ramsar Convention on Wetlands on 1 February 1982.<\/b><span style=\"font-weight: 400;\"> At present, <\/span><b>India has 98 Ramsar Sites spread across 28 states and union territories, covering a surface area of 1.384.140 ha.<\/b><span style=\"font-weight: 400;\"> These wetlands are recognized for their importance in terms of ecology, water systems, and biodiversity.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The <\/span><b>largest Ramsar site in India is the Sundarban<\/b><span style=\"font-weight: 400;\"> Wetland in West Bengal, covering about 4,230 sq. km. The <\/span><b>smallest sites are Renuka Lake and Vembannur Wetland Complex,<\/b><span style=\"font-weight: 400;\"> both covering less than 1 sq. km.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The <\/span><b>oldest Ramsar sites in India are Chilika Lake in Odisha and Keoladeo Ghana <a href=\"https:\/\/vajiramandravi.com\/current-affairs\/national-parks-in-rajasthan\/\" target=\"_blank\">National Park in Rajasthan<\/a>,<\/b><span style=\"font-weight: 400;\"> which were designated in <\/span><b>1981.<\/b><span style=\"font-weight: 400;\"> This shows that India has been committed to wetland conservation for a long time.<\/span><\/li>\n<\/ul>\n<h2><b>Measures Taken to Conserve Wetland Ecosystems<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Amrit Dharohar Programme:<\/b><span style=\"font-weight: 400;\"> This initiative focuses on linking wetland conservation with local livelihoods by promoting eco-friendly tourism. In its first phase, important sites like <strong><a href=\"https:\/\/vajiramandravi.com\/current-affairs\/sultanpur-national-park\/\" target=\"_blank\">Sultanpur National Park<\/a><\/strong>, Sirpur Wetland, Yashwant Sagar, <strong><a href=\"https:\/\/vajiramandravi.com\/current-affairs\/bhitarkanika-national-park\/\" target=\"_blank\">Bhitarkanika National Park<\/a><\/strong>, and <strong><a href=\"https:\/\/vajiramandravi.com\/current-affairs\/chilika-lake\/\" target=\"_blank\">Chilika Lake<\/a><\/strong> were selected. Training programmes like Alternative Livelihood Programme (ALP) and Paryatan Navik Certificate (PNC) help local people earn income through conservation activities.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Wetland City Accreditation (WCA):<\/b><span style=\"font-weight: 400;\"> India is promoting sustainable urban planning under the Ramsar Convention on Wetlands through WCA. Cities must protect wetlands as natural flood buffers. In 2025, Indore and Udaipur became the first Indian cities to receive this recognition.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Wetland Mitras (Citizen Participation): <\/b><span style=\"font-weight: 400;\">Under the \u201cSave Wetlands Campaign,\u201d local people are encouraged to act as \u201cWetland Mitras\u201d (Friends of Wetlands). They help monitor wetlands, report pollution or encroachment, and support conservation as part of a people\u2019s movement.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Green Credit Programme (GCP): <\/b><span style=\"font-weight: 400;\">This programme allows private companies to earn credits by funding wetland restoration. It encourages the private sector to invest in conservation, including activities like restoring mangroves.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Wetland Health Cards:<\/b><span style=\"font-weight: 400;\"> The government uses modern tools like satellite data (from Indian Space Research Organisation) along with field data to monitor wetlands. These \u201chealth cards\u201d give real-time information about water quality and help take timely action.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Expansion of Ramsar Sites:<\/b><span style=\"font-weight: 400;\"> India has significantly increased its wetlands under international protection from <\/span><b>26 in 2014 to 98 now<\/b><span style=\"font-weight: 400;\">. This ensures better conservation through global recognition and legal protection.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ground Truthing of Wetlands:<\/b><span style=\"font-weight: 400;\"> To protect even small wetlands, physical verification (ground truthing) is being done along with satellite mapping. This helps identify and protect wetlands that might otherwise be ignored or encroached upon.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>National Plan for Conservation of Aquatic Ecosystems (NPCA):<\/b><span style=\"font-weight: 400;\"> This plan focuses on managing not just the wetland but also its surrounding catchment area. It helps control pollution and siltation at the source for better long-term conservation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>National Wetlands Conservation Programme (NWCP):<\/b><span style=\"font-weight: 400;\"> Launched in 1985-86, this programme aims to protect important wetlands across India. About 115 wetlands have been identified for priority action. State governments manage these wetlands, while the Ministry of Environment, Forest and Climate Change provides guidelines, funding, and technical support.<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Wetland ecosystems are water-covered areas like marshes, swamps, and mangroves that support rich biodiversity, regulate water flow, and protect regions from floods.<\/p>\n","protected":false},"author":29,"featured_media":93311,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[786],"tags":[4935,5102,6144],"class_list":{"0":"post-93270","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-general-studies","8":"tag-geography","9":"tag-geography-notes","10":"tag-wetland-ecosystems","11":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/93270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/29"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=93270"}],"version-history":[{"count":4,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/93270\/revisions"}],"predecessor-version":[{"id":93318,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/93270\/revisions\/93318"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/93311"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=93270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=93270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=93270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}