In some areas, it limits coastal flooding by containing the water that comes in during a very high or storm-driven tide. Peat also acts as a filter, cleaning water by removing various compounds and either storing or breaking them down. The salt marsh is also an important breeding ground for many species of marine life. These animals use the marsh and its tall grasses for protection from predators. Some of the marine life is: clams, mussels, shrimp, oysters and small fishes such as killies and spearing.
Utility wise economically wetlands are directly or indirectly provide lots of services like storm and flood control, food, fiber and raw materials to the society and living organisms. They also provide fodder for verity of animal through mangrove, see grass bed and salt marsh, also included in coastal wetland. Ecologically mudflat, mangrove and estuarine environment supports several fauna like macro invertebrate, reptile, fishes and hence it attract local as well as migratory birds. It also act as buffer zone of coastal and terrestrial ecosystem and plays a vital role for coastal food chain (Figure 1.1). Especially mangrove ecosystem is a key component to function a nutrient cycle through its life litter decomposition and provide food and nursery for fishes and macro
Julia Zhou Salt Marsh Islands at Jamaica Bay The tidal salt marshes make vital contributions to the ecosystem in Jamaica Bay. The marshes help spawning processes and are primary nursery for species important to both recreational and commercial uses, providing protection from storm surges, and also removing pollutants and other toxic substances, which as a result, acts as a natural filter, improving the water quality in the bay. Salt marshes are low lying, grasslands that periodically become overwhelmed and drained by high tides. The fish and shellfish nurseries and are also a feeding ground for various species of wildlife in the ecosystem. They support a variety of invertebrates such as mussels, shrimp, oysters and horseshoe crabs that are key elements of the estuarine ecosystem.
A pool is usually found on a meander whereas the riffle is normally seen on the straighter areas of the channel, they tend to be situated very close to one another, forming in sequences. The aim of this investigation is to carry out a field investigation at a pool and riffle and compare the characteristics at these two sites with the objective to state the differences. Site Description The river used for the investigation is a tributary of the River Teme , and known as The Leigh Brook. The River Teme is tributary of The River Severn. The site that was investigated lies in the Knapp and Papermill Reserve, managed by the Worcestershire Wildlife Trust.
A wetland is technically defined as: "An ecosystem that arises when inundation by water produces soils dominated by anaerobic processes, which, in turn, forces the biota, particularly rooted plants, to adapt to flooding." The primary factor that distinguishes wetlands from other land forms or water bodies is the characteristic vegetation that adapts to its unique soil conditions. Primarily, wetlands consist of hydric soil, which supports aquatic plants There are four main kinds of wetlands: marsh, swamp, bog and fen. Sub-types include mangrove, carr, pocosin, and varzea. Some experts also include wet meadows and aquatic ecosystems as additional wetland types.
This study will examine the various importances of seagrass and to what extent they are vital for the survival of species within their ecosystem. In addition to this, the role of seagrass in important ecosystem processes will be examined. The abundance of coastal regions are closely linked with seagrasses as they greatly contribute to productivity. Seagrass meadows are highly productive and are ideal for nurseries and providing a relatively safe habitat and shelter from predators (Hughes et al. (2008).
Over 71% of the earth surface is water with the average depth of 3800 m. Over 99% of the liquid water component of the earth is ocean. The rest is water that occurs in freshwater lakes and rivers belie their fundamental importance in the maintenance and survival of terrestrial life (Wetzel, 2001). The small water reservoirs are built for flood protection, water supply and irrigation (Baxer, 1977). Potentially, such small water reservoirs can play the environmental role of natural lakes, pools or ponds. Shallow lakes and ponds are collectively, highly rich in terms of biodiversity (Fahd et al., 2009).
The use of these names causes it to be confused with similar-looking non-native plants like Brazilian elodea (Egeria Densa) or hydrilla (Hydrilla verticillata). American waterweed is an attractive aquarium plant, and is a good substitute for Brazilian elodea since it is native to Washington's lakes, ponds and rivers. American waterweed is usually fairly easy to distinguish from its more notorious relatives, like Brazilian elodea and hydrilla. All of them have leaves in whorls around the stem. However, American waterweed has three leaves per whorl, whereas hydrilla and Brazilian elodea almost always have more than three leaves per whorl.
Body: The physical properties of saturated soils vary somewhat from wetland to wetland but are characterized by certain processes. One is the interaction of the soil with the watertable. Three patterns of possible groundwater flow have been considered: water could flow into the saturated areas from the surrounding area (discharge), making the saturated area the focal point; water could flow through swamps because of local relief (flow-through); or water could flow from the saturated zone into surrounding areas (recharge) possibly due to differential water use by plant communities or pumping (Crownover et al, 1995). There can also be vertical exchange of water between the groundwater and saturated soil. For example, capillary effects pull water upward into the soil from the water table.
Wetland is an area which is a junction between land and water. Wetland is just like the kidney of human. It filters the pollutants and regulates the surface runoff so as to prevent the flooding of mangroves. It has bled many marine animals, such as Dwarf Eel Grass, Sesarmas, Mudskippers, Magpie Flat...etc. Therefore, it has high ecological value.