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vallisneria การใช้

"vallisneria" แปล  
ประโยคมือถือ
  • Vallisneria has arched stems which cross over small obstacles and develop small planters at their nodes
  • However, real plants like Vallisneria or Anubias can be tried in a cichlid tank.
  • With few exceptions, the commonly traded " Vallisneria " are tolerant and adaptable.
  • McLane ( 1955 ) noted that male courtship behavior was observed near clumps of Naias and Vallisneria.
  • "Vallisneria " is a submerged plant that spreads by Leaves arise in clusters from their roots.
  • The most recent phylogenetic treatment of the family recognizes four Thalassia " and " Vallisneria " ).
  • The lake supports beds of " Vallisneria americana " and " Sagittaria stagnorum " but contains no hydrilla.
  • ;Vegetation : Lake vegetation comprise : typha, lily, nelumbo, algae, tapegrass ( Vallisneria spiralis ), mosses, ferns, rushes ( Juncaceae)
  • For example, the USGS has created a model for the American wild celery ( Vallisneria americana ) by developing a statistical model that calculates the probability of submersed aquatic vegetation.
  • Other plants such as the dwarf palmetto and wax myrtle and submerged aquatic plants such as " Vallisneria " and " Ruppia " are native to Louisiana wetlands.
  • Studies of " Vallisneria gigantea ", an aquatic flowering plant, have shown that chloroplasts can get moving within five minutes of light exposure, though they don't initially show any net directionality.
  • Females of the aquatic plant " Vallisneria americana " have floating flowers attached by a long flower stalk that are fertilized if they contact one of the thousands of free floating flowers released by a male.
  • However, this is relatively uncommon ( only 2 % of pollination is hydrophily ) and most aquatic plants are insect-pollinated, with flowers that emerge into the air . " Vallisneria " is an example.
  • Once they have established their own roots, these daughter plants can be cut away and transplanted if necessary . " Vallisneria " will accept neutral to alkaline water conditions ( they do not like very acidic conditions ) and do not require carbon dioxide fertilization.
  • Live aquatic plants, as well as providing additional biological filtration components to assist with nitrate management, provide an environment that resembles at least part of the wild habitat, and fine-leaved plants such as " Cabomba " are usually the plants of choice, though other plants such as Amazon swordplants and " Vallisneria " are equally suitable for an aquarium housing them.
  • Tropical freshwater refugiums often contain large amounts of aquarium plants, primarily " Vallisneria ", " Anubias ", " Cabomba ", " Echinodorus ", " Microsorum ", " Cladophora ", Java moss and " Fontinalis ", but like marine tanks they often contain scavengers such as several species of prolific snails which are often Ramshorn snails and " Physa " and prolific shrimp such as cherry shrimp.