This website uses cookies to ensure you have the best experience. Learn more

A Local Ecosystem Essay

4551 words - 19 pages

Biology – Module 1 – A Local Ecosystem
The distribution, diversity and numbers of plants and animals found in ecosystems are determined by biotic and abiotic factors.
Compare the abiotic characteristics of aquatic and terrestrial environments.
An aquatic environment is one that consists in water.
The abiotic characteristics of an aquatic environment include:
Buoyancy – This refers to the upward pressure (or thrust) that is applied on the organism by its medium. Buoyancy is determined by the density of the medium and determines the floating ability of an organism. Water provides sufficient buoyancy for many organisms, e.g., the jellyfish. If a jellyfish is taken out of ...view middle of the document...

Availability of water – In aquatic environments water availability can be a problem as osmosis occurs. Organisms are suited to a particular type of water – either fresh water or salt water. If the organism is placed in the wrong type of water they will die, thus water-availability is an issue. In this scenario, the salinity of the water is another factor.

Light penetration – Light is only able to penetrate about 100m in oceans and seas. Thus as the depth increases the light penetration decreases. Light is essential for all aquatic plants, thus the plants needed to have specific adaptations that allow them to retrieve enough sunlight to survive? The light penetration is also dependent upon water clarity.
Exposures to natural forces – Different aquatic environments are exposed to different natural forces such as tides, currents, waves etc. Marine organisms must be adapted to survive in such conditions.
A terrestrial environment is one that consists on land.
The characteristics of a terrestrial environment include:
Temperature – There are much larger temperature variations on land rather than in water. Land organisms must therefore have adaptations to cope with such large temperature changes.
Landscape position – Slope and aspect may affect temperature, water and light availability as well as impact on soil quality. Run-off and erosion may also be prominent in particular landscapes.
Rainfall and water availability – Water is not freely abundant in land. It must be sourced from the soil or consumed. Organisms must have adaptations that allow them to survive using the amount of water available to them
Salinity – Different soils have different salinity levels and only particular organisms thrive in certain salinity levels. Plants must have adaptations that enable them to cope with the different levels of salinity.
PH (acidity/alkalinity) – Soil pH can vary. Dissolved salts play an important role in determining the pH of the soil and some plants need to have a particular pH to survive. Plants need to have adaptations that allow them to cope with the pH of the soil in their environment.
Buoyancy – Air provides minimal buoyancy and therefore land organisms need to have a skeletal and muscle structures that enable them to support them.
Exposure to natural forces – Wind, rain, floods, droughts, monsoons, cyclones, storms etc. are all part of the terrestrial environment and organisms need to be able to adapt to most if not all of these forces.

Identify the factors determining the distribution and abundance of a species in each environment.
Distribution – refers to the region where an organism is found.
Abundance – refers to the number of individuals in the area and is usually described as a density.
Aquatic - There are several abiotic factors that affect abundance and distribution of organisms in aquatic environments including:
Pressure Variations – ranging from low pressures in surface...

Other Papers Like A Local Ecosystem

Mangrove And Ecosystems Essay

2963 words - 12 pages Abiotic Influences on an Ecosystem, 2013”). The most influential abiotic factors which define a mangrove ecosystem include salinity, the lack of dissolved oxygen within soil (anoxic soil) and tidal fluctuation. Topography the arrangement of the natural and physical features of a landscape, in this case the hollows and mounds within the rivers will affect tidal inundation (“A Local Ecosystem-Mangroves, 2013). Tidal inundation in turn affects

Environmental Interupstions Essay

1312 words - 6 pages .   3. An ecosystem is  A. the transition zone between grassland and desert. B. a group of interactive species and their environment. C. a body of freshwater. D. the lowland area on either side of a river.   4. The major benefit of the Greater Yellowstone Ecosystem Management Plan is  A. the creation of large regions of wilderness for animals such as bison and grizzly. B. the increase of cattle grazing on park land. C. the increase of

Freshwater Ecosystem

1721 words - 7 pages Fresh water ecosystems are very common across the United States. Fresh water ecosystems can consist of several different factors. A fresh water ecosystem will be around a body of water. The body of water is always fresh water, meaning that the body of water is non-salt water like the ocean. Fresh water ecosystems can be around a lake, river, stream, pond, wetland or other (National Geographic, n.d.). Often times, fresh water ecosystems

Treat of Bottom Trawling

2025 words - 9 pages only bottom trawling be banned because it destroys the marine ecosystem, it also negatively affects poverty reduction. In other words, bottom trawling provides benefits only wealthy people or countries, not the poor. In general, fishing is an important source of living for local fishing communities or small scale fishermen. But a problem is that the local and small scale fishers are being placed under a life of extreme poverty, because bottom

Immigration

1240 words - 5 pages controlled. We also lost indicators of the ability of ecosystem to support life of all kinds, including human life, finally, living in a world lacking the beauty and tranquility inherent in diverse, intact ecosystems had profound effects on out mental health. 2. According to the information in the exhibit human population has exploded since the invention of agriculture and people are transforming the land for farming and the industrial

Natural Resources

1842 words - 8 pages The associated topic linked with Florida's agricultural life cycle is a resource located in the central part of Florida. According to the State of Florida information it noted (as cited in Florida, 2012), The Wekiva River is part of a large organism that plays a crucial role in the existence of mankind on the local, regional, state, national and global levels. Wekiva River, along with St. Johns River, Blackwater River, and Rock Springs

Invasive Species

596 words - 3 pages was by people releasing them to establish a local food source and live fish food trade before they were added as an injurious wildlife species in October of 2002. These fish now being in Michigan water will adversely affect the ecosystem in many ways. One of these ways being they will compete with the native species for food. Their food source consists of plankton, insect larvae and small crustaceans. When they turn into adults they become

Tourists' Impact On Coral Reefs

1039 words - 5 pages tourists wishing to see and examine the coral reefs and to catch the fish. Constant damage to the coral will cause it to die, which in turn will destroy that local ecology. This essay will describe the tourism-related impacts on coral reefs and some solutions to cope with the situation.Coral reefs are one of the most important natural resources in sea coasts. They also supply a special living arrangement where by sea animals can work together to

Boidiversity

1690 words - 7 pages concerns affecting local, regional and global scales of communities, ecosystems, and cultures. plans identify ways of sustaining human well-being, employing natural capital, market capital, and ecosystem services A schematic image illustrating the relationship between biodiversity, ecosystem services, human well-being, and poverty Protection and restoration techniques Removal of exotic species will allow the species that they have negatively

Ecosystems at Risk

1097 words - 5 pages A management strategy is ‘a plan of attack’; a response to the problem or concern at hand. Management strategies are needed to protect ecosystems (including those used by indigenous peoples) at a local, national, regional, continental and global level. They are used to preserve and conserve ecosystems at risk and recognise the need to manage whole ecosystems. This may involve strategies that range from total preservation to sustainable

Loss of Top Predators Is Humankind’s Most Pervasive Influence on Nature

2614 words - 11 pages extinction of enormous proportions. In most cases, driving some species to the edge of extinction. Possibly no species are more affected than the world’s large top predators. These animals are extremely important to the overall health and function of an ecosystem, but conservation and restoration of them and their habitat is a remote thought on humans. The absence of predators in certain areas has led to an explosion of their natural prey, which leads to

Related Essays

Coral Reef Bleaching Essay

2530 words - 11 pages Arthur 2001, p. 567). Increasing population of indigenous people will increase the demand of food that need to be provided by coastal ecosystem, and creates scarcity. Local Community Healthy coral reefs make many contributions to local coastal communities. Coral reefs help reducing erosive impacts of waves in coastal zone, and supporting local communities by providing a good fishing community (Sudara et al cited in Worachananant et al 2008, p

Not A Paper

424 words - 2 pages the extinction of several species of fin fish. A model has been put in place to calculate the fishing yield and is one of the most sophisticated models due to its three pronged approach. The first is the single species approach, which sets a limit for harvesting individual species that are indefinitely sustainable. This irradiates the possibility of extinctions. The next approach is the ecosystem approach which involves considering harvested

Natural Resources Paper

612 words - 3 pages Write a 1,400- to 1,750-word paper on natural resources and energy. Include the following: • Choose a specific ecosystem, such as a forest, grassland, or a marine or freshwater aquatic ecosystem. • Identify impacts associated with agriculture. • Identify and discuss the effects that a growing human population may have on that ecosystem’s resources, including loss or harm to populations of wild species. • Discuss one management

Determining The Causes And Effects Of Water Pollution In Lake Huron

950 words - 4 pages ., Wright, E., & Tsang, A. [n.d.] produced a study that focused specifically on Pollution's Effects on the Great Lakes Ecosystem. Determining the causes and effects of water pollution in Lake Huron may facilitate new ideas and solutions for cleaning up our waterways’ and improving public health. Although there are many causes of Lake Huron’s pollution, most fall under three categories: 1) Point-source pollution; 2) Nonpoint-source pollution