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essay about human effects on wetlands
essay about human effects on wetlands
essay about human effects on wetlands
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Wetlands
"Wetlands" is the collective term for marshes, swamps, bogs, and similar areas. Wetlands are found in flat vegetated areas, in depressions on the landscape, and between water and dry land along the edges of streams, rivers, lakes, and coastlines. Wetland areas can be found in nearly every county and climatic zone in the United States. Inland wetlands receive water from precipitation, ground water and/or surface water. Coastal and estuarine wetlands receive water from precipitation, surface water, tides, and/or ground water. Surface water sources include runoff and stormwater.
Since the 1600s, more than half of the original wetlands in the lower 48 states have been destroyed. Twenty two states have lost at least 50 percent of their original wetlands. Indiana, Illinois, Missouri, Kentucky, Louisiana, and Ohio have lost more than 80 percent of their original wetlands and California and Iowa have lost nearly ninety-nine (99 percent) percent. Since the 1970s, the most extensive losses of wetlands have occurred in Louisiana, Mississippi, Arkansas, Florida, South Carolina, and North Carolina. Wetlands have been drained and converted to farmland, filled for housing developments and industrial facilities, and used as receptacles for waste. Human activities continue to adversely affect wetland ecosystems.
More recently, society has begun to understand the functions of wetlands and the values humans obtain from them. Wetlands help regulate water levels within watersheds; improve water quality; reduce flood and storm damages; provide important fish and wildlife habitat; and support hunting, fishing, and other recreational activities. Wetlands are important features in watershed management. The characteristics of wetlands are ...
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Another cause of wetland depletion are industry. Adverse effects of industry on wetlands can include: reduction of wetland acreage, alteration of wetland hydrology due to industrial water intake and discharge, water temperature increases, point and non-point source pollutant inputs, pH changes as a result of discharges, and atmospheric deposition. Saline water discharges, hydrocarbon contamination, and radionuclide accumulation from oil and gas production can significantly degrade coastal wetlands (Rayle and Mulino 1992). Most petroleum hydrocarbon inputs into coastal wetlands are either from coastal oil industry activities, from oil spills at sea, from runoff, or from upstream releases (Kennish 1992). Oil can alter reproduction, growth, and behavior of wetland organisms, and can result in mortality. Plants suffocate when oil blocks their stomata (Dibner 1978).
...nks distinguish between preserved, restored, or created credits, conservation banks currently do not. The FWS’s federal guidance and California’s guidance do not state a preference for restored, enhanced, created, or preserved habitat, but approximately 94% of conservation bank credits are derived from preservation. Regulatory agencies often struggle with awarding credits for created wetland habitat due to performance risks and doubt about ecological value. Habitat creation for conservation banking has yet to be tested. Another issue of concern to conservation banking and preservation habitat is long-term management. Unless there is active management on areas where the ecosystem relies on it (e.g., controlled burning, invasive species control), using preservation for mitigation could lead to a net loss of habitat for a particular species. (Fox and Nino-Murcia, 2005)
“ Effects of Oil Spills on Marine and Coastal Wildlife” Holly K. Ober. WEB. 19 May 2014
Fifty percent of the original wetlands doesn’t even exist today. The water supply in the Everglades is changing and that has affected the Everglades in many ways. For one, population is decreasing and mankind needs to restore it somehow. Next, the Everglades are in need of some money to do that restoration, but where will they get it from? Last, the water supply is poisoning the humanity around it with much bacteria and many bad and dangerous elements. The Everglades water supply affected it in fixing the Everglades and wildlife.
Perhaps the most devastating disregard of the Fraser Valley’s biodiversity was the draining of Sumas Lake to create farmland, resulting in the loss of habitat and the extirpation of endemic species. As it was originally intended to be, the Fraser Valley was a “perhaps unparalleled ecosystem” (Rosenau, p. 55), with bountiful wetlands and remarkable biodiversity. The European settlers 150 years ago considered it to be “wasteland” (Thom, p. 172), certainly uninhabitable and a breeding ground for mosquitoes, so the most logical thing to do would be to drain the body of water once known as Sumas Lake...
Westfields, a medium sized wetland region, is located on the outskirts of Limerick city and within the floodplain of the River Shannon (CAAS (Environmental Services) Ltd., 1999). Wetland regions are broadly defined within the Ramsar Convention (1971, 1), as, “areas of marsh, fen, peatland or water, whether natural or artificial, permanent or temporary, with water that is static or flowing, fresh, brackish or salt including areas of marine water, the depth of which at low tide does not exceed six metres.” Identified as some of the most diverse habitats on earth, wetlands are also under severe threat, with a “10% decrease in their area occurring worldwide between the years 1990 and 2006” (CORINE, 2006). Westfields is no exception. Known worldwide for the diverse flora and fauna, in particular avifauna, that are present, the area has seen a dramatic decrease in size from its traditional expansive domain to a present area of twenty-six hectares. Thus, this essay aims to examine in detail the biogeographic merits of these declining wetland regions in particular Westfields, record the current condition of this particular wetland, and explore potential ideas for future conservation.
The water supply of the Everglades has been getting worse and worse, causing the quantity and diversity of wildlife to decrease. From 1905 to 1910, people started to do construction on the Everglades cutting off the flow of fresh water to it. According to the article “Past and Present: The Florida Everglades”, “As a result [of cutting off the flow of water], the quantity and diversity of the wetlands’ [Everglades] wildlife decreased.” This shows that the doing of humans a 100 years ago has affected the Everglades in a bad way. The
The Everglades, classified as a wetland or a "transition zone" can support plant and animal life unlike any other place. Wetlands are an important resource for endangered species and "that more than one third of the United States' threatened and endangered species live only in wetlands." Says Elaine Mao, the author of Wetlands and Habitat Loss. People have started to notice the importance and the role of wetlands like the Everglades and how they are valuable and essential for ecosystems to live. Wetlands provide so many kinds of plants, mammals, reptiles, birds, and
A huge array of plants and animals surrounds you. You take a deep breath inhaling the magnificent scents of the blooming flowers and marshy wetland. Birds darken the sky as they fly overhead and crocodiles lay resting in the sawgrass. Animals live in harmony with each other everday.This place although seems like a fairytale is actually very similar to a well-known place called the Florida Everglades, a subtropical wetland ecosystem with an amazing biodiversity. However, this ecosystem is falling apart due to a variety of reasons. For example, snakes not native to this wetland are introduced threatening this ecosystem's food web. The Florida Everglades is a wetland worth preserving though, because it provides a habitat for wildlife, essentially supports the economy of the United States, and humans benefit from this ecosystem.
Before development exploded in California, the state contained about 5 million acres of wetland habitat. Unfortunately, over the years California has been willing to part with 91 percent of its wetlands, Southern California having lost 95 percent. Los Angeles County has only one wetland remaining. This being the Ballona Wetlands located between Marina del Rey and the Westchester bluffs, it was once a major part of California’s natural wetland systems. Before development, Ballona wetlands natural habitat covered 2002 acres. This area, 800 to 1000 acres, referred to as Playa Vista by its owners is made up of salt marsh freshwater marsh and part upland and dune areas. It is considered Los Angeles’ largest ‘wetland ecosystem’. Although degraded over the years it still functions as a normal natural wetland - providing vital services. A major function it provides is that it filters out toxic wastes and pollutants from stormwater runoff before they reach the Santa Monica Bay. It is "a coastal plain, and acts as a flood plain for the surrounding area" (FOBW Information folder 1998: Fact Sheet). Ballona is an integral part of the Pacific flyaway, providing vital feeding and nesting habitat for over 185 species of birds, including some on the federal endangered species list. The southwestern willow flycatcher, an endangered species, was just recently seen by developers in an area cleared for construction. Ballona is no doubt a welcomed refuge to all species, both flora and fauna, from the industrial landscape of Los Angeles. The Friends of Ballona Wetlands have said it is "a spawning ground for commercial and sport fish, and a vital source of nutrients for the entire coastal marine environment" (FOBW Information folder 1998: 20 years of C...
They hold pollutants that could be exposed during swimming. Even low levels of pollutant exposure should be avoided. Ecosystems in these ponds can be somewhat fragile and very slim due to the amount of work that is going on through the pond. These ponds can easily be enjoyable for a nice place to sit but even then a pond may or may not turn green and be smelly during the summer heat. What matters is what the pond is doing to keep our streams healthy. There are more than 14,000 recorded storm water ponds in South Carolina. Experiments are run on these ponds by a multitude of people from University of South Carolina, or Clemson University. These ponds exemplify a new type of aquatic environment and are also known for Canadian geese which makes for highly experimental grounds. These ponds make for a little habitat for many types of species to thrive and for our streams to thrive as well. Our very own storm water pond, for example, is home to a fair amount of varieties of ducks and
Though it is not just animals ruining the environment, human activities, such as agriculture, industrialization and development has been playing a crucial role in the mass destruction. Wetlands are drained and filled in to provide more opportunities for residential and industrial development. It's also replaced and used for dumping grounds for waste. Even though attitudes about wetlands have changed, over the recent years, since they provide us protection from storms and hurricanes. The value of many wetlands are degrading because of the
This paper introduces the environmental concerns of the loss of coastal wetlands. The paper will discuss the significance of wetlands and the devastation that is occurring because of human activity. Wetlands are an essential element of our environment both ecological and societal; conservation will be essential for the preservation of these precious ecosystems.
The Florida Everglades is one of the most diverse wetland ecosystems in the United States. These tropical wetlands span an area of more than seven hundred square miles in southern Florida. The term Everglade means river of grass. The system starts in central Florida near Orlando and travels southwest to the tip of Florida. The Everglades has a wet season and a dry season which causes a great change in hydrology. During the wet season the system is a slow moving river that is sixty miles wide and over a hundred miles long. During the dry season water levels drop and some areas will completely dry up. The Everglades has many different aquatic environments all having interdependent ecosystems. The most important factor for all these environments is water. It helps shape the land, vegetation, and all the organism that live in each area. Each environment has particular needs for the organisms living in that area. Throughout the years humans have diverted the water to fit their varying needs. The state has built dikes and levees, dug canals, and have built locks to divert the water. This has all been done to keep areas completely dry for developing and agricultural needs. Today, The Everglades is half the size of its original size. Throughout the years many restoration acts have been created and updated. The Everglades restoration projects have been the most expensive environmental repairs in The United States. This is because The Everglades is one of the three most important wetland areas in the world. The Everglades National Park is the home of thirty six protected species including the West Indian Manatee, the American Crocodile, and the Florida Panther. The Everglades also homes hundreds of species of birds, fish, mammals, and repti...
The study area consisted of Latah and Benewoh in Idaho, USA. The research used a total of 105 sites to collect data; ranking the areas from lowest to highest elevation. The methods implemented in this research consisted of wetland sampling, mail survey and habitat modelling. The combined results allowed for better insight for the conservation of these species. The first section of the experiment consist...
Wetlands are highly productive ecosystems. Wetlands include marshes, estuaries, bogs, fens, swamps, deltas, shallow seas, and floodplains. Wetland habitats support a vast range of plant and animal life, and serve a variety of important functions, which include water regime regulation, flood control, erosion control, nursery areas for fishes, fish production, recreation, plant production, aesthetic enjoyment, and wildlife habitat. Wetlands account for about 6% of the global land area and are among the most valuable environmental resources.