| Papers [1-15] of 100 :: [Page 1 of 7] | | Go to page : 1 2 3 4 5 6 7 —> | Search results on "FRESHWATER ECOSYSTEM": |
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Freshwater Ecosystem, 2005.
A summary of the freshwater ecosystem, including its definition and biodiversity.
1,208 words (approx. 4.8 pages), 4 sources, MLA, $ 41.95
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Abstract
This paper presents a short summary of the freshwater ecosystem. It focuses on the species thriving in freshwater areas, the threats to freshwater biodiversity, and the ways to fight those threats.
Outline
Abstract
What is a Freshwater?
Lakes and Ponds
Rivers and Streams
Wetlands
The Freshwater Environment
Threats to Freshwater Biodiversity
Solutions to the Problem
From the Paper
"Plants and algae are vital to freshwater ecosystems for they provide oxygen and food for the animals in this system. In moving waters, some plants have special characteristics that prevent them from being carried away. Some plants have stems that bend with the flow of moving water, some have strong roots anchored in the soil, while some like mosses can stick to rocks. Meanwhile in still waters, some plants have different ways to adapt. For example, algae, water lilies, and duckweed can float on the surface of the water. Reeds and cattails thrive along the shoreline of freshwater regions. Estuaries are also rich in plant life with the unique characteristic of being able to grow in fresh and salt water. Pickleweed and mangroves are some examples of plants living in estuaries."
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Acid Rain and Freshwater Fish, 2006.
This informative paper examines the disastrous effects of acidic precipitation and aluminum toxicity on freshwater fish populations around the world.
2,360 words (approx. 9.4 pages), 6 sources, MLA, $ 72.95
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Abstract
This well-researched and detailed paper explores the effects of acidic precipitation (acid rain) which has been a major factor in fish kills throughout countries in the northern hemisphere. The writer of this paper cites numerous studies which have linked aluminum toxicity along with acid rain as the main cause of fish extinction. This paper stresses the urgency in developing a successful management tool in determining the viability of fish populations in various natural settings. This paper also contains detailed information and results of various case studies as well as two graphs that support the author's claims in this report.
From the Paper
"The fish used in this experiment were obtained from a trout farm which ensures the relative similarity of the fishes used in the experiment. They were acclimated to artificial soft water for 2 weeks before they were used in the experiment. They were then transferred to flux chambers for the experiment and given 24 to 48 hours to recover from the handling stress before they were exposed for 24 hours to low-pH water (pH 4.4, 4.8, or 5.2) A control group (N=36) for each of these pHs was left in these conditions for 10 days. The experimental group after this 24 hour exposure to low pH levels were exposed to concentrations of Al of 111, 333, or 1000 ug/L at the same pH (N=72)."
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The North American Beaver, 2002.
Study of all the major aspects of the life of the North American Beaver and its association with freshwater ecosystems.
2,150 words (approx. 8.6 pages), 13 sources, $ 80.95
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Abstract
The topic of this research paper focuses on a species that is closely associated with freshwater ecosystems for a major portion of its lifecycle. This paper looks at the North American Beaver in this context. Scientific and common name(s) as well as details concerning morphology, physiology, geographic distribution, abundance, habitat preferences, characteristics, life history and predator/prey relationships are all addressed.
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The Ecosystem of Mono Lake, 2002.
A paper which introduces the term 'ecosystem' and studies the ecosystem of Mono Lake, California.
2,350 words (approx. 9.4 pages), 5 sources, MLA, $ 72.95
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Abstract
The paper defines the term ecosystem as an area which includes all the living organisms, their physical surroundings, and the natural cycles that sustain them. It also gives several examples of ecosystems such as forests. The paper then studies the ecosystem of Mono Lake in California. It covers issues such as tools used to study the ecosystem, the biogeography of the area, plants and animals of the area, the food web, water recycling and the human impact.
From the Paper
"For at least the last 5,500 years, Paiute Indians have lived off the land and waters of the Mono Basin. Using shallow skimming baskets, Kutzadika?a Paiute women collected kutsavi, the pupae of alkali flies?an excellent source of protein. The arrival of miners and those who supplied them with food, clothing, and other goods brought the peaceful coexistence of the Kutzadika?a with their surroundings to a rapid end.
Settlements of gold miners came and went quickly in the last half of the 19th century. With the collapse of mining in the 1880s, Mono Lake began its irregular career as a resort destination. As late as the 1930s, hotels attracted tourists to the lake by claiming its waters had healing properties. Until the 1950s, excursion boats sometimes ferried tourists to the islands for hiking and picnics."
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Ecosystem Succession, 2006.
An examination of primary ecosystem succession and secondary ecosystem succession.
675 words (approx. 2.7 pages), 3 sources, $ 26.95
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Abstract
This paper examines two instances of ecosystem development--one instance being primary succession, the other instance being secondary succession--and explores how abiotic and biotic factors can create and/or perpetuate a ecological system. The paper concludes briefly by looking at the various mechanisms which hinder or help an ecosystem recover after a catastrophic event.
From the Paper
"In our course textbook there are two especially interesting illustrations. The first of these depicts primary succession on a glacial moraine in Glacier Bay, Alaska. In this instance, the barren, rocky landscape is colonized by lichens and mosses and shrubs. Afterwards, dwarf trees and more mature shrubs emerge and then spruces come to predominate. In the second illustration, we are confronted with secondary succession in North Carolina wherein, after one year after cultivation, there is the emergence of crabgrass and then the subsequent emergence of annual and perennial weeds. A few years later, pine seedlings and saplings develop and these are followed by young pine forest and by the developing "under-story" of hardwoods. Finally, 150 years after the field was first abandoned, there is a mature hardwood forest present."
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Marine and Forest Ecosystems, 2006.
An examination and assessment of a marine and forest ecosystem and the relationship these systems have to the well being of humans.
1,350 words (approx. 5.4 pages), 3 sources, $ 53.95
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Abstract
This essay examines a marine ecosystem and a forest ecosystem and identifies and ranks the three most important ecosystem services that are provided by these two systems, describing the nature of the relationship between two of the ecosystem services and the well being of humans. Furthermore, the essay discusses the most significant direct and indirect drivers of degradation within the two systems and discuss the scenarios that would best protect them as well as the scenarios that are most likely to happen.
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Ecosystems, 2002.
An analysis of ecosystems, specifically forests.
1,226 words (approx. 4.9 pages), 1 source, MLA, $ 41.95
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Abstract
This paper describes various types of ecosystems. The paper defines an ecosystem as all of the organisms and their physical environment that exist within a certain, specific area, including all plants, animals, water, dirt, rocks, and the surrounding air. The paper includes a discussion of a complex mature forest ecosystem.
From the Paper
"The word ?ecosystem? is used frequently in the popular media, and yet most people do not have a clear, working definition of an ecosystem. An ecosystem simply refers to all of the organisms and their physical environment that exist within a certain, specific area. This includes all plants, animals, and their environment, which can include water, dirt, rocks, and the air that surrounds them. For example, all of the organisms that live in a New England tide pool, plus their physical environment would make up an ecosystem. In addition, a deciduous forest and a salt pond marsh are also ecosystems."
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Technology and Global Ecosystem, 2004.
An analysis of the implications of technology and the global ecosystem.
2,302 words (approx. 9.2 pages), 10 sources, MLA, $ 71.95
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Abstract
This paper discusses the debate over whether or not technology threatens the integrity of the global ecosystem. The paper presents the warnings that global warming, acid rain and the eventual exhaustion of the world's natural resources are just some of the unintended consequences of the imposition of man-made technology on earth's ecosystem. To determine the accuracy of these warnings, the paper provides an examination of the implications of technology and the global ecosystem, followed by a summary of the research in the conclusion.
Outline
Introduction
Review and Discussion
Background and Overview
Negative Impacts of Technology on the Global Ecosystem
Positive Impacts of Technology on the Global Ecosystem
Conclusion
From the Paper
"It should be pointed out from the outset that biological organisms have been influencing the global ecosystem in one fashion or another since the world was created. According to David J. Tenenbaum's essay, "Where Do We Stand? Global Ecosystem Assessments Ask the Big Question" (2001), "The degradation of ecosystems is literally ancient history. Desertification -- an enduring ecosystem degradation -- gets much of the blame for the decline of ancient civilizations in the Middle Fast" (588). More contemporary examples of this process occurred during the severe soil erosion of the Dust Bowl in the U.S. Great Plains during the 1930s. This modern encroachment on the ecosystem started with unsustainable farming practices and was made even worse by a continued drought. Tenebaum reports that all told, desertification is damaging 30 percent of irrigated areas, 47 percent of rain-fed land, and 73 percent of rangelands today (589). "
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Non-Directive versus Ecosystemic Play Therapy, 2006.
A comparison of non-directive versus ecosystemic play therapy as a means of providing support for a child.
1,809 words (approx. 7.2 pages), 8 sources, MLA, $ 58.95
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Abstract
The work seeks to prove the statement of thesis which states that "ecosystemic play therapy provides better support for the child in play therapy than does the models contained in non-directive play therapy and is therefore more successful in eliciting change than non-directive play therapy." Ecosystemic methods of therapy and non-directive methods of therapy for play are researched and reviewed in this work in a comparison of the two methods toward the end of answering the question of which method is most desirable for therapeutic use.
Table of Contents:
Objective
Statement of Thesis
Introduction
Play Therapy Defined
Non-Directive Play Therapy
Ecosystemic Play Therapy
Summary
Conclusion
From the Paper
" Many studies have been conducted in measuring the effectiveness of Non-Directive Play Therapy. Findings include those of the following studies. The effectiveness of non-directive Play Therapy was investigated by Kot (1995) in working with those who had witnessed domestic violence incidents. The Joseph Pre-School and Primary Self-Concept Screening Test, Child Behavior Check list and Children's Play Sessions behavior rating scale. Findings state that there was a significant reduction in the externalization of behavior problems as well as reduction in the overall problems with behavior."
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Global Warming & the Ecosystem, 2006.
A discussion regarding global warming and its effects on the ecosystem.
2,742 words (approx. 11.0 pages), 10 sources, APA, $ 82.95
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Abstract
This paper reviews the impact that global warming has on human communities and ecosystems, and how it represents a great challenge for the entire planet. The paper reports that specialists recommend we try to find alternative sources of energy, and meanwhile, use less of the fossil-fuel energy. The paper further discusses the Kyoto Protocol.
Outline:
Abstract
Historical Perspectives of the Problem
The Impacts on and Responses of Humans or other living organisms to the Environmental Variation
Changes in the Ecosystem and Biosphere Structure
Ecosystem Dynamics Relative to Repair and Restoration
Economic Costs and Social Costs of the Ecological/Environmental Impact
Prevention and Public Awareness Effort Aimed at the Problem
Conclusion
From the Paper
"Another issue is represented by the more and more often natural disasters like storms, floods and hurricanes that damage and even destroy people's establishments. The regions most vulnerable to sea-level rise are river deltas such as the Nile delta in Egypt, the Ganges in Bangladesh, the Yangtze and Hwang Ho in China, the Mekong and also the United States that could loose 8000 square miles (20,000 km2) of land, valued at about $650 billion, and 30-80% of its coastal wetlands . Insurance companies are also affected by the natural disasters that come along and in order to avoid bankruptcy they try to develop new strategies on the market and diminish the risks."
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Fire and the Ecosystem, 2004.
An in-depth examination of the link between fire and the environment and ecosystem.
7,325 words (approx. 29.3 pages), 24 sources, MLA, $ 162.95
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Abstract
This is devoted to providing a study of the relationship of fire to the maintenance of a balanced ecosystem and human efforts that are either (unwittingly) deleterious or beneficial. It explains the advantages that fire provides to the ecosystem and discusses whether the involvement of humans in the ecosystem destroys the natural balance.
From the Paper
"Approximately, one month ago the news media was rife with details of problems caused by escalating fires that swept through forested areas in Southern California. (Kennedy, 2003) The newsreels teemed with instances of people whose houses had burned down or were in danger of being burned down. Naturally, one feels for these people deprived of their home and hearth by devastating effects of the fire. On the other hand, one must recognize the facts that not only are forest fires natural, they are a way for the earth to maintain ecological balance. Fires replenish the earth by doing away with the unwanted underbrush that threatens to suffocate the longer living plants by depriving the earth of aeration and nourishing water. It will be shown in this work that the plants have adapted to fires. Indeed, some plants have evolved to fuel the fires. Other plants have evolved to suppress fires. Still other plants have evolved to flourish in fires?their seeds only germinate after a fire. Plants are the primary providers in the food chain. Therefore, the flora of a region is the primary cause of the primary line of defense wherever natural fires are concerned. The fauna of a region is generally affected secondarily. The only animals that have an influence on fires are humans. Humans inadvertently, maliciously or carelessly cause fires."
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An Aquatic Ecosystem, 2008.
Looks at the food web of an aquatic ecosystem.
1,355 words (approx. 5.4 pages), 5 sources, APA, $ 45.95
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Abstract
This paper discusses an aquatic ecosystem located in a botanical garden in which dragonfly larva eat stickleback fish, which eat daphnia. The author describes the dragonfly larva, the stickleback fish and the daphnia and points out that the actions of these three entities in this aquatic ecosystem transfer nutrients into energy as they move through the food chain. The author concludes that the presence of predators has an effect on the morphology of each of the species and any changes in their behavior affects the environment as a whole.
From the Paper
"A study by Arnqvist and Johansson (1998) considers ways in which the dragonfly larva may show the effects of adaptive phenotypic plasticity, meaning that the form of the insect based on environmental considerations, one of which is the action of predator-induced defenses in prey. Predation is known to affect the phenotypic expression of a wide range of traits in a way that reduces the impact of predation. Most studies have examined traits that exhibit switched plasticity and usually do not examine the ontogenetic growth trajectories of defense structures."
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Effects Of Pollution On Marine Ecosystems, 2005.
A look at the global effect of pollution on marine ecosystems.
2,712 words (approx. 10.8 pages), 13 sources, MLA, $ 95.95
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Abstract
This paper begins by describing the current situation of marine ecosystems around the world and looking at the damage they suffer as a result of pollution. The paper explains that marine ecosystems are being altered because of oil spills and other human-mediated activities and then takes a look at the effects of this pollution.
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"Native Knowledge for Native Ecosystems", 2007.
A review of Robin Wall Kimmerer's article, "Native Knowledge for Native Ecosystems".
1,070 words (approx. 4.3 pages), 3 sources, APA, $ 37.95
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Abstract
This paper briefly reviews Robin Wall Kimmerer's 2000 article, "Native Knowledge for Native Ecosystems" and highlights the article's main points as well as how it approaches the broad concept of ethno-ecology. More importantly, the paper also touches upon how the article approaches the linkage of local and/or traditional knowledge of ecological systems with academic and/or scientific knowledge of those same systems. Finally, the paper discusses the significance of the aforementioned linkage as it pertains to the future of human beings in the global ecosystem.
From the Paper
"Simply put, Kimmerer's argument is that Native Americans intensively cultivated the land so that it would provide them with sufficient foodstuffs to brave the grueling winter months. While modern-day efforts to restore the ancient biological vitality and bio-diversity of the American woods and ecosystems is a laudable goal, it is not possible without also considering how the natives were able to so successfully manage the world around them. In effect, Kimmerer argues that modern-day conservationists must "heal" their relationship to the land and understand the land spiritually and emotionally as well as intellectually. Less abstractly, Kimmerer states that twenty-first century man must adopt the "site-specific" or "diachronic" knowledge which well-served Native Americans in the past and which lends itself to successful local site restoration. "
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Water Toxins and the Ecosystem, 2001.
This paper discusses the disastrous effects of water toxins on our ecosystem.
3,230 words (approx. 12.9 pages), 7 sources, MLA, $ 93.95
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Abstract
This paper presents an in-depth look at the water toxins and the way they affect the ecosystem as a whole. The writer takes the reader on an exploratory journey through the ecosystem and the way it works. Then it discusses the way water toxins and pollution are destroying the system by killing the marine organisms. Finally, it concludes that in the future it will be imperative to find ways to thwart the water toxins affects.
From the Paper
"Because we have lived on this planet for millions of years, we have come to rely on its ability to support and sustain human and animal life indefinitely. The world survives by way of an ecosystem and that system is the core of all living things. For many years now scientists have warned that our cavalier attitude toward preservation of the eco system will cause it to begin breaking down, however, their warnings often fell on deaf ears. Now it is time to pay the piper. Recently scientists have begun to take a close look at the cycles of life and the way they are intertwined in the ecosystem. There is strong evidence that toxins are destroying the ecosystem because the abundance and diversity of marine organisms is rapidly declining(Liat pp 142)."
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