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The prothallia of this species (or possibly a closely related species) are commonly cultivated as an aquarium plant, where it is known to aquarists as süsswassertang (German spelling: Süßwassertang). [3] It is often incorrectly spelled "subwassertang" due to the German eszett's similarity to the Latin 'B'. It is also called Loma fern or ...
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.
Floristic Quality Assessment (FQA) is a tool used in the United States to assess an area's ecological integrity based on its plant species composition. [1] Floristic Quality Assessment was originally developed in order to assess the likelihood that impacts to an area "would be irreversible or irretrievable...to make standard comparisons among various open land areas, to set conservation ...
Hygrophila polysperma, commonly known as dwarf hygrophila, dwarf hygro, Miramar weed, Indian swampweed or Indian waterweed, is an aquatic plant in the family Acanthaceae.It is native to Bangladesh, India, China and Malaysia, and has also been introduced to the US states of Florida, Texas and possibly Virginia. [1]
Secchi depth is the depth at which a disk is no longer visible to the human eye. This measurement was created in 1865 and represents one of the oldest oceanographic methods. [ 23 ] [ 24 ] To measure Secchi depth, a white or black-and-white disk is mounted on a pole or line and lowered slowly down in the water.
Peridotite is the dominant rock of the Earth's mantle above a depth of about 400 km; below that depth, olivine is converted to the higher-pressure mineral wadsleyite. [ 26 ] Oceanic plates consist of up to about 100 km of peridotite covered by a thin crust.
It may even be the case that the Redfield Ratio is applicable to terrestrial plants, soils, and soil microbial biomass, which would inform about limiting resources in terrestrial ecosystems. [12] In a study from 2007, soil and microbial biomass were found to have a consistent C:N:P ratios of 186:13:1 and 60:7:1, respectively on average at a ...
In the aquarium, B. heudelotii requires water temperatures of 20–28 °C and moderately acidic ('soft') to neutral water with a pH range of 5.0–7.0, [6] but tolerates a wide range of light levels. It does best in flowing water. [7] [8] [3] This species is often used as a midground specimen plant in tropical freshwater aquaria. Propagation is ...