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Bodies of water are public property, and their use requires local government approval. [7] Under the Fisheries Code, while public water bodies can be leased for use, they cannot be sold. Only 10% of the surface area can be used for aquaculture. [31] Fish ponds can be under 25-year leases from BFAR, shorter leases, or on private property.
Food crops; Some aquatic plants are used by humans as a food source. Examples include wild rice , water caltrop (Trapa natans), Chinese water chestnut (Eleocharis dulcis), Indian lotus (Nelumbo nucifera), water spinach (Ipomoea aquatica), prickly waterlily (Euryale ferox), and watercress (Rorippa nasturtium-aquaticum). Bioassessment
In temperate areas one or a few species usually dominate (like the eelgrass Zostera marina in the North Atlantic), whereas tropical beds are usually more diverse, with up to thirteen species recorded in the Philippines. Like all autotrophic plants, seagrasses photosynthesize, in the submerged photic zone.
When referring to plants, the term describes land plants whose roots have adapted well to tolerate regular, prolonged submersion in water, as well as emergent and (occasionally) floating-leaved aquatic plants that are only partially immersed in water. Examples of semi-aquatic animals and plants are given below.
Aquatic plants are used to give the freshwater aquarium a natural appearance, oxygenate the water, absorb ammonia, and provide habitat for fish, especially fry (babies) and for invertebrates. Some aquarium fish and invertebrates also eat live plants. Hobbyists use aquatic plants for aquascaping, of several aesthetic styles. Most of these plant ...
Periphyton is a complex mixture of algae, cyanobacteria, heterotrophic microbes, and detritus that is attached to submerged surfaces in most aquatic ecosystems. The related term Aufwuchs ( German "surface growth" or "overgrowth", pronounced [ˈaʊ̯fˌvuːks] ⓘ ) refers to the collection of small animals and plants that adhere to open ...
Vallisneria (named in honor of Antonio Vallisneri [3] [4]) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis.The genus is widely distributed in tropical and subtropical regions of Asia, Africa, Australia, Europe, and North America.
Ceratophyllum demersum, commonly known as hornwort (a common name shared with the unrelated Anthocerotophyta), rigid hornwort, [2] coontail, or coon's tail, [3] is a species of flowering plant in the genus Ceratophyllum. It is a submerged, free-floating aquatic plant, with a cosmopolitan distribution, native to all continents except Antarctica.