We can study ecology at the level of the individual, the population, the community, and the ecosystem. Studies of individuals are concerned mostly about physiology, reproduction, development or behaviour, and studies of populations usually focus on the habitat and resource needs of individual species, their group behaviours, population growth, and what limits their 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 Essay on Community 35 Great Topics for Your Next Ecology Essay - blogger.com
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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, essay on ecology. Definitions 4. Origin of Ecological Crises 5. Four Laws 6. Objectives 7. Subdivisions 8. Community Ecology 9. Every organism invariably depends upon the environment and other organism for its existence. It either eats other organisms or is eaten by others and competes with other for the necessities of life such as food, essay on ecology, shelter and mate survival requires group association. Such associations and concept of organisms and their environment in general constitute the science of ecology, essay on ecology.
The word ecology was coined by Ernst Haeckel in and is derived from two Greek words oikos meaning house or place of living and logos meaning study of. 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. This includes consideration of plants, animals and human beings, essay on ecology.
Ecology was first described as a separate field of knowledge in by the 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, four identifiable subdivisions of scales are of particular interest:. At each scale, the subjects of interest to ecologists change. At essay on ecology individual level the response of individuals to their environment biotic and abiotic is key issue, while at the level essay on ecology populations of a single species, species-species interaction 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 essay on ecology defined in various ways:. The study of interrelationship of organism or groups of an organism to their environment is called ecology, essay on ecology.
Human ecology is a 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, essay on ecology. This is known as ecological balance, essay on ecology. The principal causes for ecological degradation are 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 use value to nature. Industrial process resembles those of a natural eco 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.
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. The development of mathematical models to relate intersection of parameters and to predict the effects, essay on ecology. 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:.
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, essay on ecology, their behaviour and relation to the environment. On the basis of the kind of environment or habitat, 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 on ecology. 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. 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, essay on ecology, a lake, a forest, a desert, a essay on ecology and a grassland. Each of these major communities includes several minor communities. It is a smaller community which is not a self-sustaining unit.
It is dependent on other communities for its existence, essay on ecology. The major community exemplified by a forest has many minor communities namely the plant community the plant population of the forestthe animal community the 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 essay on ecology 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.
Essay on ecology includes study of various life processes respiration, growth, reproduction etc. 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 essay on ecology or storeys or strata related to the height of plants, for example, tall trees, 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. 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. This is called biotic stability essay on ecology 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. 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. The survival of mankind will be in peril of pollution of the environment, degradation of the land, over consumption and wasteful use of natural resources are not checked immediately, essay on ecology.
Development should essay on ecology the result of scientific management based on ecological principles. Concern for environment protection was shown in essay on ecology conference on Human environment held at Stockholm in June, The prime objective of the conference was to focus attention on the major environmental issues, essay on ecology, to recognise and identify the essay on ecology for environmental degradation and the need to prevent and control it. The conference called upon all the nations of the world to protect, improve, essay on ecology, preserve and enhance the environment for the present and future generations.
In the United Nations conference on Environment essay on ecology Development at Rio de Janeiro held in June,an action plan was formulated for solving the major environmental problems threatening the environment, like.
Ecology Essay questions
, time: 12:40Analysis Of What Ecology Is: [Essay Example], words GradesFixer
Essay On Population Ecology. Words4 Pages. AUTECOLOGY. Autecology otherwise known as population ecology is a sub-field of ecology that deals with the dynamics of species population and how these species thrive, survival and interact with the environment. It is the study of how the population size of species groups change over time and space. The development Essays on Ecology. Essay examples. Essay topics. Assesment of My Ecological Footprint. words | 2 Pages. My Ecological Footprint is hectares. The bigger components of my footprint using the Pie Chart are my Carbon Footprint which is gha, cropland with a gha, and Forest Products which has a gha. The larger sections according Sep 13, · Ecology Essay Ideas. Grace Fleming, blogger.com, is a senior academic advisor at Georgia Southern University, where she helps students improve their academic performance and develop good study skills. Ecology is the study of the interactions and reciprocal influence of living organisms within a specific environment. It's usually taught in the context of biology,
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