Freshwater ecosystem Essays

After the Spanish made some fortunate discoveries in South America, the English were determined to strike gold in the north, however, they would soon find out that this “new country” was not so perfect. In the Spring of 1607, about 100 colonists sailed to North America and created an English settlement called Jamestown (Roden 49). Upon their arrival, they discovered that Jamestown was home to some 1500 Powhatan Indians, and, because the colonists didn’t bring the right people to defend themselves

affects not only to humans but also to all living things. Global Health becomes worse and worse because of the change, and it is now significantly be seen. Global warming, the ozone layers being damaged, deforesting, rivers drying up, unbalancing ecosystem and different kinds of pollution lead to certain climate change. Although all the causes of climate change are made by humans, it is hard to restore the original global balance situation. Climate change becomes a serious ailment of our mother earth

Freshwater is one of Canada's most valuable and important resources, as Canada is very abundant in freshwater. As it is readily available in our daily lives, most of us don't realize the importance freshwater has on our lives. In Canada, fresh water can come from many sources. Some places fresh water is found in Canada are lakes, groundwater, wetlands, watershed regions, and glaciers. The main sources of freshwater in Canada is the Great Lakes and wetlands. The Great Lakes are the largest freshwater

have a filtering capacity to change the ecosystem of rivers and lakes by eliminating phytoplankton. Some freshwater fish depend and feed on zooplankters, and by eliminating phytoplankton, zebra mussels reduce the number of zooplankters and thus, reduce the number of naturally occurring fish that feed on zooplankters, as a result (Woodward and Quinn 85). As the number of indigenous fish decreases, the result is an increase of other fish not native to the ecosystem; however, they help create an ideal environment

Estuaries and upper estuarine freshwater are ecosystems which contain zooplankton, phytoplankton, microbes, vertebrates and invertebrates, and in general they are exposed to different freshwater and marine influences (Chen & Stillman, 2012; Cohen, 2000). These waters and especially the upper estuarine freshwater ecosystems are often exposed to changing circumstances like seasonal climate, changing tides, stratification and estuarine circulation (Geyer, Trowbridge, & Bowen, 2000; Goodrich & Blumberg

Jamestown should have been called Jamesdown, because of all of the colonists that died from 1607-1611. There were over 100 colonists that died in Jamestown. There were three major things that led to the deaths of the Jamestown colonists. They were: starvation, lack of people to fill occupations and drought. The Jamestown colonists didn’t bring enough food. This led to starvation which killed a lot of people. Some of the most important occupations that they needed to survive, they either only had

paper (1 piece per student) Pencil (1 per student) Crayons and markers Introduction (5 min) Fishnet (10 min) Food Chain Discussion (5 minutes) Big Fish (30 minutes) Clean Up & Wrap Up: (10 minutes) Swim in the rivers, lakes, streams and every other freshwater habitat of the world to discover nature’s buffet: food chains! NGSS 2-LS4-1 Make observations of plants and animals to compare the diversity of life in different habitats. NGSS 2-ESS2-3 Obtain information to identify where water is found on Earth

tropics and subtropics. Mangroves are remarkably tough. Most live on wet soil, but some also grow on sand, peat, and coral. They live in water up to 100 times saltier than most other plants can tolerate .The mangrove is very useful for the human ecosystem because it is used by aquatic fishpond for marine animals. It creates a barrier between the sea and the coast controlling erosion of the latter. Despite the importance of this environment it is treated poorly. In this sense this study aims to explore

separated into the following five levels in ascending order; species, populations, communities, ecosystems, and biomes. The first level of the biosphere are the species, which are individuals who are genetically related and can produce offspring. Examples of species would be alligators,

Habitats: Place in which an organism ordinarily lives in to survive. Niches: The spot an organism fills in a community/ecosystem. Ecosystem

the first ecologist to use the term “ecosystem” in a scientific publication (Cleveland 2014). In the publication, Tansley defined an ecosystem as “The whole system… including not only the organism-complex, but also the whole complex of physical factors forming what we call the environment” (Ellis 2014). Today, scientists have defined an ecosystem as “a system which is formed when a community of organisms interacts with the environment” (Ecosystem.org). Ecosystems are communities where organisms interact

Increased ultraviolent rays have caused damage to some agricultural crops and to organisms in wetlands and coastal environments. Increasing water temperatures will alter the freshwater, ocean and wetlands ecosystems rapidly. The air temperature is predicted to increase which will affect many animal and plant species. The speed of the change is much faster than in the past which can cause a huge threat to species which cannot handle the rapid

change may be one of the greatest threats to our modern day life and the future of our planet. Climate singlehandedly is able to impact natural resources, vegetation, and human impacts on an area which and effectively destroy the functionality of an ecosystem. Many climate change deniers use the formal definition of climate to support the idea that climate change and global warming does not exist - they believe that climate is simply the natural changes in weather over time. However, the change we have

Invasive species are “species that is non-native to the ecosystem whose introduction is likely to cause economic and environmental harm”. A example of Invasive species would be the Zebra Mussel. Zebra Mussels or also known as Dreissena polymorpha is a small freshwater mussel. The Zebra Mussels can live up to three-nine years which can grow up to 2 inches. These mussels attach to hard surfaces such as rocks or boats. They were first introduced to the Great lakes in 1988 but were originally from Russian

over and kill native species. Native species are key parts of the ecosystem. They regulate water absorption, protect against erosion, and protect marine life. The community on Maui feels the negative effects of invasive species taking over the forest. For example, there are water shortages, erosion, landslides, coral bleaching, damages to marine life, and murky water. I feel it is important to maintain our native ecosystem. Therefore, I will be volunteering to first hand alleviate the issues

accordion paragraph summary. ESSENTIAL QUESTION: What are the key concepts of Ecology and how are they related to the levels of organization in the biosphere? QUICK WRITE: How do you interact with the living and nonliving factors (things) in your ecosystem or environment? I interact with living things for example my family,friends,and my pets. The nonliving things i interact with my bed,my phone my tv,and my computer READING PROMPT: The article “Introduction to Ecology” by HowStuffWorks.com

environmental changes influence social and economic dynamics as well. The visibility of environmental issues affecting consumers and wildlife alike is very present when we examine estuaries, also know as bays, sounds, or lagoons. Estuaries are mixtures of freshwater and seawater and are created within the indentations found along coastlines. All along the coast of California, where I reside, there are several bays to be found. With many of our major cities built in coastal zones and nearly

In my life I’ve been freshwater fishing and saltwater fishing many times in a variety of places. Throughout my experiences I’ve realized that a large amount of people consider all types of fishing to be the same, this is not true in many aspects. It can be divided into two categories: saltwater fishing and freshwater fishing. I’ve caught a 40 inch northern in Canada (freshwater) which is a big fish, and it only took me ten minutes to get it into the boat. However, I caught a 42 inch shark in Florida

The Biotope Aquarium Explained In a biotope aquarium, the aquarist attempt to simulate a natural habitat, assembling fish species, plants, water chemistry and decorations found in that specific ecosystem. A “true” biotope should be a mirror of a natural habitat. There are many good reasons for setting up an aquarium that simulates a natural habitat. Those of us who have done everything, bred everything and kept most fish might simply want a new challenge. Another good reason to setup a biotope

& Smith, 2009), are a major threat to our habitats, terrestrial and aquatic species, and biodiversity. Agricultural and leisure industries are affected as well as conservation welfare and the continued wellbeing of man, flora and fauna. Whole ecosystems can be distorted and the economic cost of awareness, prevention and eradication systems is substantial. Most invasive species have been introduced by mandeliberately or otherwise. As an island, Ireland has been subjected to less invasive species