Species in wetlands provide ecosystem services, and protect the sustainable environment for human beings. The wetland biodiversity has been impacted at Mohangonj in Bangladesh due to the development of major environmental threats. The present research is undertaken to report the species status, wetland properties, and major environmental pressures in each wetland ecosystem. Among the recorded species, the total percentage of visible, threatened, endangered, and extinct species was 69.23, 18.62, 10, and 1.92% in these wetland ecosystems, respectively. The highest number of threatened species was found in the wetland of Aizda (29%); the lowest was in Khalaura (8%). The maximum number of endangered species was noted in the wetland of Sonarthal (16%), and the minimum was in Chadra (4%) wetland. Four percent species were in the extinct category at some of the wetland ecosystems. Wetland biodiversity protects wetland ecosystem services and the sustainable environment for species conservation. Continuous monitoring of wetland biodiversity might be helpful for the conservation of species in the wetland ecosystem. 1. Introduction Wetlands are one of the world’s key natural resources. It is the transition between land and water and are the most productive ecosystems in the world. Wetlands can be natural or artificial such as marsh, fen, and peat land; wetland’s water may be permanent or temporary, static or flowing, and fresh or brackish, including the areas of marine water, the depth of which at low tide does not exceed six meters [1]. The biodiversity of the wetland ecosystem is variable in the world; it encompasses the range of living things, the degree of genetic variation, and the wealth of different habitats within a particular ecosystem. The wetland habitat is distinct from any other land-based terrestrial habitats, and the organisms of this ecosystem face specific environmental problems. However, most of these problems are overcome through the development of a plant or animal’s distinctive behavior. These wetland species are visible in different climatic regions due to their typical characteristics in various parts of the world; they are not confined to certain areas or particular zones of latitude as are most of the great global biomes, such as rain forest, savanna, and desert area. As a consequence, wetlands are a great source of global biodiversity within the major climatic belts due to the evolved collection of animals and plants. Although some species are able to overcome environmental threats, wetland species are still vulnerable in the world. The
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