Hydrilla

Hydrilla is an marine fresh water plant. It is a plant that grows up to the surface in water of about 20 feet deep. This is a very familiar flora because it can almost grow in any freshwaters such as springs, rivers, fenland, ditches, and lakes. Hydrillas can grow in as small as a few inches of water or in as much as 20 feet of water. This flora can grow in either oligotrophic (low nutrient) or eutrophic (high nutrient) water.  
 
The Hydrilla is suited to more mild climates as it will only tolerate temperatures between 20 C and 27 C. Upon extending to the surface, the Hydrillas full branches spread out to form a thick mat. The submerged stems of the Hydrilla can be as long as 25 feet. The Hydrilla roots, also know as Rhizomes, are  often than not off-white or yellow in color. | The roots or Rhizomes of the Hydrilla are frequently yellowish or off-white in color. } The Hydrilla has a number of ways of breeding. Fragmentation, from seeds, from tuber, and turions (auxiliary buds) are ways how this pest reproduces.
 
The Hydrilla has many positives on its side when compared to other marine plants. It can grow in very low light with 1% sunlight. indigenous plants in the same area as a Hydrilla get unhealthy amounts of nutrients because of the Hydrillas absorption rate. Hydrillas can grow very quickly, contending with the native species, and that’s why it is considered a pestilent pest. Hydrilla is especially dangerous because it can almost entirely take over a body of water before appearing on the surface. When it covers a big area, all the aquatic plants that fall under it die due to the lack of sunlight or nutrition. When Hydrilla encompasses a large area, all the other marine plants fail because the do not receive enough sunlight or nutrients.
 
Each year, millions are spent on weed killers and harvesting all in an attempt to check the growth and spread of Hydrilla. Individuals can’t fish in areas where Hydrilla is found because it so adversely effects the other flora life in the area. Slowed water flow and blocked up irrigation or flood control canals are as a result of Hydrilla over growth. Swimming, boating and fishing can not be properly done in areas when Hydrilla has taken hold. Mass amounts of Hydrilla can seriously lower the oxygen levels of the water it is growing in.
 
Elodea and Egeria are often confused for Hydrilla. The marine plants Elodea and Egeria are frequently thought to be Hydrilla. Hydrillas have one or more teeth on the undersurface of the midrib. Elodea and Egeria do not have teeth present on their undersides. Neither Elodea nor Egeria has teeth on their underside. Because of the teeth, Hydrilla will feel rough. Hydrilla will feel rough due to the presence of the teeth on the bottom of the flora. The flowers the Egeria create are also bigger than the Hydrilla. 
 
Macro and micro invertebrates feed on Hydrilla. Species like ducks, fish, amphibians and reptiles will consume the rotted remains of the micro and macro organisms that fed on the Hydrilla. When this flora dies, their rotting is done by bacteria and fungi and provides food called “detritus” for many aquatic invertebrates. Ducks often eat Hydrilla turions and tubers, but this is not a substantial source of food. Ducks will ofttimes feed on the tubers and turions of Hydrilla, but they don’t make a great diet.

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