Feb 11, · Ecology is a scientific study of interaction between organisms and their physical environment. It includes both biotic and abiotic factors. Biotic factors are all of the living organisms within an ecosystem such as plants, animal and any other living things. Abiotic factors are all of the non-living things in an blogger.comted Reading Time: 3 mins Essay Contents: Essay on Introduction to Ecology Essay on the History and Scope of Ecology Essay on Definitions of Ecology Essay on the Origin of Ecological Crises Essay on the Four Laws of Ecology Essay on the Objectives of Ecological Study Essay on the Subdivisions of Ecology Essays. 11 essay samples found Essay examples. Essay topics. Stereotypes: Dangerous and Harmful Things Introduction This paper will examine whether or not the argument for stereotyping is a valid reason for treating someone a specific way. Stereotyping can be a dangerous and very hurtful thing that can damage not only the person it is
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Read this essay to learn about ecology. After reading this essay you will learn about: 1. Introduction to Ecology 2. History and Scope of Ecology 3, ecology essay. Definitions 4. Origin of Ecological Crises 5.
Four Laws 6. Objectives 7, ecology essay. Subdivisions 8. Community Ecology 9. Every organism invariably depends upon the environment and other organism for its existence. It either eats other organisms ecology essay is eaten by others and competes with other for the necessities of life such as food, shelter and mate survival requires ecology essay association.
Such associations and concept of organisms and their environment in general constitute the science of ecology. The word ecology was coined by Ernst Haeckel in and is derived from two Greek words oikos meaning house ecology essay place of living and logos meaning study of, ecology essay. The field of ecology deals with the influence of environmental factors on all the aspects of life such as morphology, physiology, growth, distribution, behaviour and survival of the organisms.
Ecology or environmental biology pertains to the study of relationship between various organisms and their environment, ecology essay. This includes consideration of plants, animals and human beings. Ecology was first described as a separate field of knowledge in by ecology essay German Zoologist Ernst Haeckel, who established the relationship of the animals to its organic as well as its inorganic environment, particularly its friendly or hostile relations to those animals or plants with which it comes in contact.
Ecology can be considered on a wider scale moving from an individual molecule to the entire global ecosystem. However, ecology essay, four identifiable subdivisions of scales are of particular interest:.
At each scale, the subjects of interest to ecologists change. At the individual level the response of individuals to their environment biotic and abiotic is key issue, while at the level of populations of a single species, species-species ecology essay is important. In recent years it was realised that ecology is an interdisciplinary science, though its body of knowledge lies in biology yet its interaction with other disciplines are quite prominent.
There are different approach for understanding the ecological sciences Table 1. Each categories of ecological studies requires specialized understanding. As the science progressed much with time, the conceptual understanding became more and more complex and interactive. Essay 3. Definitions of Ecology: Ecology has been defined in various ways:. The study of interrelationship of organism or groups of an organism to their environment is called ecology.
Human ecology is ecology essay social science that studies the relationship between man and its environment. It studies the relationship between human biological factors and the natural environment. Social ecology studies the relations among natural environment, population, technology and society.
The activities of various organisms in the environment which interact with each other are so finely balanced that they are in equilibrium in a steady state. This is known as ecological balance. The principal causes for ecological degradation ecology essay drastic changes in the technology of agricultural and industries production and transportation. Essay 4. Origin of Ecological Crises : i. Exploding population. Essay 5. Four Laws of Ecology : i. Everything is connected to everything else.
The word is perceived notes a collection of isolated objects but as a network of phenomena that are fundamentally interconnected and interdependent.
It views humans as above or outside of nature as the source of all values and prescribe only instrumental or ecology essay value to nature. Industrial process resembles those of a natural ecology essay system where in materials and energy circulates continuously in a complex web of interaction.
Microorganisms turn animal waste in to food for plants which are either eaten by animals or enter the cycle through death and decay, ecology essay. Essay 6. Objectives of Ecological Study : The main objectives of this science are to study:.
The structural adaptations and functional adjustments of organisms to their physical environment, i, ecology essay. The development of mathematical models to relate intersection of parameters and to predict the effects, ecology essay.
The main objective of the study of ecology is to apply the knowledge gained from ecological study to safeguard against disasters caused by:. Essay 7. Subdivisions of Ecology : I. Two important subdivisions of ecology are recognised by ecologists, these are:, ecology essay. It is concerned with the ecology of an individual species and its population.
Autecology is also called species ecology. It is study of communities, their composition, their behaviour and relation to the environment. On the basis of the kind of environment or habitat, ecology essay, ecology has been sub-divided into the following branches:. With advancing trends in the fields of ecology, present day ecologists divide ecology into the following branches:.
Essay 8. Community Ecology : A population of a single species cannot survive by itself because there is inter dependence of one form of life on another.
An aggregation of populations of different species living together in inter dependence in a specific area, having a specific set of environmental conditions constitute a biotic community e, ecology essay. It is large community which is self-regulating, self-sustaining and independent unit comprising of a number of minor communities in it. Examples of major communities are: a pond, a lake, a forest, a desert, a meadow and a grassland.
Each of these major communities includes several minor communities. It is a smaller community which is not a self-sustaining unit. Ecology essay is dependent on other communities for its existence. Ecology essay major community exemplified by a forest has many minor communities namely the plant community the plant population of the forestthe animal community ecology essay animal population of the forest and the microbial community bacteria and fungi population.
Structure of a community can be studied by determining the density, frequency and abundance of species. Usually a community has one or more species which occur in large number. Such species are called dominants and the community is often named after them. The community consists of different groups of plants and animals of different species, may be large and small, may belong to one life from or another but are essentially growing in a uniform environment.
This includes study of various life processes respiration, growth, reproduction etc, ecology essay. in the various seasons of the year in the dominant species of a community. The recurrence of these important life processes at regular intervals in a year and their manifestation in nature is termed periodicity. Natural forest communities possess a number of layers or storeys or strata related to the height of plants, for example, tall ecology essay, smaller trees, shrubs and herbaceous layers form the different strata.
This phenomenon in a plant community is called stratification. A zone of vegetation spreading or separating two different types of communities is called ecotone. These are marginal zones and are easily recognisable. Usually, in ecotones, the variety of one species is larger than in any of the adjacent communities. A phenomenon of increased variety and intensity of plants at the common junction is called edge-effect and is essentially due to wider range of suitable environmental conditions.
Different species of animals and plants fulfil different functions in the ecological complex. The role of each is spoken of as its ecological niche i. We can also say that ecological niche is a small habitat within a habitat in which only a single species can survive, ecology essay. Communities are not static but progressively change with time in a definite manner. This change of the plant and animal communities in an orderly sequence in an area is called ecological or biotic succession.
Ecological succession finally leads to a stable nature community called climax community. This is the study of two or more species growing together in close association in regular occurrence.
The net production of biomass and storage of energy by a community per unit time and area is called community productivity. A biotic community has the ability to quickly regain equilibrium after a disturbance in population fluctuation, ecology essay.
This is called biotic stability and is directly proportional to the number of interacting species it contains i. Before man encroached upon it, the world biosphere was a large climax community resulting from thousands of years of evolution, ecology essay.
With increase in population, the demand for space has been steadily increasing and so the ecosystem have been rapidly exploited beyond the capacity of the environment to adjust, thereby totally disrupting the balance of nature. Before a point of no return is reached, man should stop manipulating the environment to his advantage, ecology essay.
The survival of mankind will be in peril of pollution of the environment, ecology essay, degradation of the land, over consumption and wasteful use of natural resources are not checked immediately.
Development should be the result of scientific management based on ecological principles, ecology essay. Concern for environment protection ecology essay shown in the conference on Human environment held at Stockholm in June, The prime objective of the conference was to focus attention on the major environmental issues, to recognise and identify the causes for environmental degradation and the need to prevent and control it, ecology essay.
The conference called upon all the nations of the world to protect, improve, preserve and enhance the environment for the present and future generations. In the United Nations conference on Environment and Development at Rio de Janeiro held in June,ecology essay, an action plan was formulated for solving the major environmental problems threatening the environment, like.
Introduction to Ecology
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Feb 11, · Ecology is a scientific study of interaction between organisms and their physical environment. It includes both biotic and abiotic factors. Biotic factors are all of the living organisms within an ecosystem such as plants, animal and any other living things. Abiotic factors are all of the non-living things in an blogger.comted Reading Time: 3 mins Essay Contents: Essay on Introduction to Ecology Essay on the History and Scope of Ecology Essay on Definitions of Ecology Essay on the Origin of Ecological Crises Essay on the Four Laws of Ecology Essay on the Objectives of Ecological Study Essay on the Subdivisions of Ecology Essays. 11 essay samples found Essay examples. Essay topics. Stereotypes: Dangerous and Harmful Things Introduction This paper will examine whether or not the argument for stereotyping is a valid reason for treating someone a specific way. Stereotyping can be a dangerous and very hurtful thing that can damage not only the person it is
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