Aquatic Plants & Kids | Sciencing
In the ecosystem, aquatic plants serve as food and habitat for animals living in the sea and prevent shorelines, ponds and lakes from eroding. Aquatic Plants and Animals Aquatic Marine Fresh water Hydrosphere Ecology . Heyen, H., H. Fock, and W. Greve, Detecting relationships between the. Relationships between fish and aquatic plants a plan of study / by K. .. cultural research has gained enough understanding about plant-animal rela- tionships.
Facts about aquatic plants for kids are the same facts adults should learn, but they often need to be presented differently to children.
Knowing a few different types of aquatic plants is useful and fun for younger age groups, while older kids can be introduced to the basics of plant metabolism and evolution. Basic Water Plant Facts Water plants or aquatic plants are more formally referred to as "submerged macrophytes.
Without them, animal species in their midst may not have sufficient access to oxygen, which aquatic plants and algae supply in abundance via their metabolic processes. These plants and algae also supply food for some animal species; for examples, turtles consume the scummy-looking algae from freshwater pond surfaces.
Sciencing Video Vault Some aquatic plants float on the surface of fresh water; others have especially strong stems and roots that allow them to remain firmly anchored in soil in shallow water despite being subject to strong currents.
Moss famously clings to rocks, as most kids who explore the outdoors have probably noticed. Other nest builders assume a more positive relationship with aquatic plants. Probably the basic documented case is that of the sticklebacks Gasterateoidea. These relatives of the seahorses carefully select and dislodge the appropriate plants and weave them into a cylindrical nest in which spawning and early rearing of the fry occurs.
The family of Anabantids or labyrinth fishes also use bits and pieces of plants to weave into a thick mat of bubbles that the male forms at the surface of the water. Amia calva, the bowfin, is reported to build some type of nest utilizing plant materials Nikolsky The balance between the two is delicate and the addition of excessive nutrients to the system favors the overpopulation of the phytoplankton.
Algal blooms occur and have definite adverse affects on fish populations and their reproduction. The dense mats that are formed by the blooms shade the bottom and eliminate the slower growing rooted vegetation. Aside from the eradication of floral spawning sites, direct effects on the adults, eggs, and juveniles occur.
The introduction of toxins by the following genera of Cyanophycae is responsible for many lake and pond fish kills: Thick blankets of filamentous may also form. Pithophora, Rhizonium, and Hydrodictyon may form blankets that entirely cover large bodies of water.
Relationships Between Aquatic Plants and Reproduction of Fishes
According to Bennett, "There is evidence that dense stands of submersed rooted aquatic plants may bind up nutrient materials throughout the growing season so that they are not available for production of phytoplankton and the organisms that feed upon phytoplankton," This means that although fish hatches would be large, the chances for larval survival would be greatly diminished.
The table at the end of this paper shows the data supporting this, Potomageton foliosus and P. In relation to fishing lakes and ponds, over-production of plants is usually frowned upon by management and fishermen.
The survival rate of fishes beyond forage size is inversely proportional to the size of the fishes that reach maturity. A few aquatic plants are predacious on the fry of fishes. The most common of these is probably the bladderworts Utricularia Podinova The plant Aldrovandia also utilizes the fish larvae as a source of nutrients. Ceratophyllum submersuma free-floating plant that grows completely submerged Pistia stratiotesan example of a pleustona plant that floats freely on the water surface Lysichiton americanus grows rooted in the bottom with leaves and flowers above the waterline.
Functions of macrophytes in aquatic system[ edit ] Macrophytes perform many ecosystem functions in aquatic ecosystems and provide services to human society. One of the important functions performed by macrophyte is uptake of dissolve nutrients N and P from water. Habitat complexity provided by macrophytes like to increase the richness of taxonomy and density of both fish and invertebrates.
Examples include wild rice Zizaniawater caltrop Trapa natansChinese water chestnut Eleocharis dulcisIndian lotus Nelumbo nuciferawater spinach Ipomoea aquaticaand watercress Rorippa nasturtium-aquaticum. Watershed health indicators[ edit ] A decline in a macrophyte community may indicate water quality problems and changes in the ecological status of the water body. Such problems may be the result of excessive turbidityherbicidesor salinization.