28/11/ · An ecosystem is a community of living and non-living things that work together. Ecosystems have no particular size. An ecosystem can be as large as a desert or a lake or An ecosystem is a structural and functional unit of ecology where the living organisms interact with each other and the surrounding environment. In other words, an ecosystem is a chain of 30/04/ · Introduction. The sum of all living organisms residing in an ecological environment forms a community. In the community, the living and non-living factors interact in a manner
Essay on Ecosystem | Environment
The term an ecosystem is originally defined by Tansley An ecosystem is defined as the network of interactions among organisms, and between organisms and their environment they can come in essay on ecosystem size but usually encompass specific, limited spaces although according to some scientists the entire planet is an ecosystem or an ecosystem is defined as a complex, dynamic community of organisms including plants, essay on ecosystem, animals and micro-organisms that all interact among themselves as well as with the environment that they live in. An ecosystem consists of the biological community that occurs in some essay on ecosystem, and the physical and chemical factors that make up its non-living or abiotic environment. All living organisms are a part of both a biotic community and an ecosystem.
Ecosystems are what sustain both humans and animals, providing them with energy, essay on ecosystem, nutrients, oxygen, water and shelter, among other things. There are many examples of ecosystems a pond, a forest, and grassland. The study of ecosystems mainly consists of the study of essay on ecosystem processes that link the living, or biotic, components to the non-living, or abiotic, components. Energy transformations and bio-geochemical cycling are the main processes that comprise the field of ecosystem ecology. Ecology generally is defined as the interactions of organisms with one another and with the environment in which they occur.
Studies of individuals are concerned mostly about physiology, reproduction, development or behavior, and studies of populations usually focus on the habitat and resource needs of individual species, their group behaviors, population essay on ecosystem, and what limits their abundance or causes extinction. Studies of communities examine how populations of many species interact with one another, such as predators and their prey, or competitors that share common needs or resources. These functional aspects include such things as the amount of energy that is produced by photosynthesis, essay on ecosystem, how energy or materials flow along the many steps in a food chain, or what controls the rate of decomposition of materials or the rate at which nutrients are recycled in the system.
Ecosystem function is the capacity of natural processes and components to provide goods and services that fulfill human needs, either directly or indirectly. Ecosystem functions are conceived as a subset essay on ecosystem ecological processes and ecosystem structures. Each function is the result of the natural processes of the total ecological subsystem of which it is a part. Natural processes, in turn, are the result of complex interactions between biotic living organisms and abiotic chemical and physical components of ecosystems through the universal driving forces of matter and energy. This group of functions relates to the capacity of natural and semi-natural ecosystems to regulate essential ecological essay on ecosystem and life support systems through bio-geochemical cycles and other biospheric essay on ecosystem. In addition to maintaining the ecosystem and biosphere healththese regulatory functions provide many services that have direct and indirect benefits to humans i.
Natural ecosystems provide refuge and a reproduction habitat to wild plants and animals and essay on ecosystem contribute to the in situ conservation of biological and genetic diversity and the evolutionary process. Photosynthesis and nutrient uptake by autotrophs converts energy, carbon dioxide, water and nutrients into a wide variety of carbohydrate structures which are then used by secondary producers to create an even larger variety of living biomass. This broad diversity in carbohydrate essay on ecosystem provides many ecosystem goods for human consumption, ranging from food and raw materials to energy resources and genetic material.
Biotic components are made up of living factors. Abiotic components are made up of all non-living factors. Energy, water, nitrogen and soil minerals are other essential abiotic components of an ecosystem. The energy that flows through ecosystems is obtained primarily from the sun. It generally enters the system through photosynthesis, a process that also captures carbon from the essay on ecosystem. These factors are non-living like light, temperature, water, atmospheric gases, wind as well as soil edaphic and physiographic nature of land surface. Abiotic factors may be abbreviated as SWATS Soil, Water, Air, Temperature, essay on ecosystem, Sun light :. Sunlight is a major part of abiotic conditions in an ecosystem.
The sun is the primary source of energy on our planet. Light energy sunlight is the primary source of energy in nearly all ecosystems. It is the energy that is used by green plants which contain chlorophyll during the process of photosynthesis; a process during essay on ecosystem plants manufacture organic substances by combining inorganic substances. Visible light is of the greatest importance to plants because it is necessary for photosynthesis. Factors such as quality of light, intensity of light and the length of the light period day length play an important part in an ecosystem, essay on ecosystem.
Plants absorb blue and red light during photosynthesis. In terrestrial ecosystems the quality of light does not change much. In aquatic ecosystems, the quality of light can be a limiting factor. Both blue and red light are absorbed and as a result do not penetrate deeply into essay on ecosystem water, essay on ecosystem. To compensate for this, some algae have additional pigments which are able to absorb other colours as well. The intensity of the light that reaches the earth varies according to the latitude and season of the year. The southern hemisphere receives less than 12 hours of sunlight during the period between the 21st March and the 23rd of September, but receives more than 12 hours of sunlight during the following six months.
Phototropism is the directional growth of essay on ecosystem in response to light where the direction of the stimulus determines the direction of movement; stems demonstrate positive phototropism i. they came towards the light when they grow. The distribution of plants and animals is greatly influenced by extremes in temperature for instance the warm season. The occurrence or non-occurrence of frost is a particularly important determinant of plant distribution since many plants cannot prevent their tissues from freezing or survive the freezing and thawing processes.
Temperature controls the rate of microbial respiration; the higher the temperature, the faster microbial decomposition occurs. It also affects soil moisture, which slows microbial growth and reduces leaching. Temperature also affect decomposition freezing temperatures kill a soil microorganism, which allows leaching to play a more important role in moving nutrients around. Temperature also plays a key role in ecosystems essay on ecosystem hot climates allowing rapid growth, high surface animals, and cold climates leading to more spherical, essay on ecosystem, fatty animals as well as slower growth and reproduction.
Habitats vary widely as a result of temperature too. Plants and bacteria also have to have particular features that allow for survival in extreme climates of temperatures. In aquatic eco systems water perform many important environmental functions Water availability is an abiotic factor of ecosystems. Living things need water to survive and how plentiful or scarce water is affects the necessary water cycle of essay on ecosystem, condensation and precipitation. Oceans, rivers or streams are key components of an ecosystem and the many forms of life that live there. The freshwater ecosystem itself is made up of biotic and abiotic elements and depends on them equally as well. Water quality is another factor, essay on ecosystem, with important metabolic functions subject to essay on ecosystem ingredients like zinc and iron that become poisonous with low- quality water.
Meteorology or weather conditions considered abiotic component are temperature, wind velocity, solar insulation, humidity and precipitation, essay on ecosystem. The most important of these is climate. Climate determines the biome in which the ecosystem is embedded. Rainfall patterns and temperature seasonality determine the amount of water available to the ecosystem and the supply of energy available. The statistical and seasonal variation of these factors influences the habitat. Weather directly controls the biotic component i. Vegetation as well as animals, essay on ecosystem. Climate features such as rain, wind and temperature play a large part also in the way an ecosystem has to work.
Rain provides necessary water for photosynthesis and so its quantity will determine just how many photosynthetic organisms can survive in an environment, the predators of those organisms, as well as the types. Soil conditions that affect ecosystems are the granularity, chemistry and nutrient content and availability. These soil conditions interact with precipitation to cause change, essay on ecosystem. Although animal remains dead organic material such as are considered abiotic. Air levels define how strong and sturdy the organisms in an ecosystem are, and which habitats must be in existence for them to survive.
Low wind levels allow for weaker more feeble organisms that reproduce rapidly to survive. In windy areas, essay on ecosystem, many plants use it as an advantage and make countless spores that will be carried to other plants and pollinate. Air quality plays an important part because pollution can contribute to carbon monoxide and sulfur dioxide degrading circulatory or pulmonary function. Air pollution can also disrupt the process of photosynthesis. Topography also controls ecosystem processes by affecting things like micro-climate, soil development and the movement of water through a system.
This may be the difference between the ecosystem present in wetland situated in a small depression on the landscape, and one present on an adjacent steep hillside Micro-topographic elements mix with meteorology barriers to affect plant growth and selection in a given area. Topography, essay on ecosystem, soil type and precipitation shape surface run-off and limit the ability of animals to build burrows and nests and affects the way predators and prey are able to hunt and hide from each other. This has effects on climate and so has various effects according to what climate factors it affects.
The organisms on a flat land compared to a hilly one will have different movement muscles to one another, essay on ecosystem. This is because some muscles are say, evolved for forward propulsion calf muscles whilst others for lifting the leg thigh muscles. This is the direction that the land is facing in relation to the sun and so has its relevance to temperature, wherein for example, essay on ecosystem, an environment that faces generally away from the sun will be cooler. Abiotic factors are particularly important to new or barren or unpopulated ecosystems. This is because the abiotic factors of the unpopulated system sets the stage for how well a given species will be able to live, thrive and reproduce there. Biotic components mean related to life.
These are living essay on ecosystem. Each biotic factor needs energy to do work and food for proper growth. There are three types of organisms that live in a biotic community are producers, consumers and decomposers. The members of a biotic community are inter-dependent in that they all depend on one another in some way for their survival. This inter-dependence is essential for stability of biotic community, essay on ecosystem. They can be further sub-divided into autotrophs producers and heterotrophs consumers that include herbivores, carnivores, and omnivores, detritivores decomposers, essay on ecosystem. The biotic characteristics are mainly determined by the organisms that occur, essay on ecosystem. For example, wetland plants may produce dense canopies that cover large areas of sediment or geese may graze the vegetation leaving large mud flats, essay on ecosystem.
Aquatic environments have relatively low oxygen levels, forcing adaptation by the organisms found there. For example, many wetland plants must produce aerenchyma to carry oxygen to roots. Other biotic characteristics are more subtle and difficult to measure, such as the relative importance of competition, mutualism or predation. There are a growing number of cases where predation by coastal herbivores including snails, geese and mammals appears to be a dominant biotic factor. Autotrophic organisms are producers i. They convert the solar energy into food from photosynthesis the transfer of sunlight, water, and carbon dioxide into energy. They generate organic compounds from inorganic material. Algae use solar energy to generate biomass from carbon dioxide and are possibly the most important autotrophic organisms in aquatic environments.
The Structure of Open-World Games is Weird
, time: 24:32Ecosystem - Words | Essay Example
25/08/ · Ecosystem is a natural system consists of all the biotic component in a community interacting with each other as well as with all the abiotic factors to form a stable and balanced Essay # 2. Concept of Ecosystem: A biotic community lives in an environment, which provides material, energy requirement and other living conditions to it. “An ecological system in which 28/11/ · An ecosystem is a community of living and non-living things that work together. Ecosystems have no particular size. An ecosystem can be as large as a desert or a lake or
No comments:
Post a Comment