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02Oct 2018 by Reese Bannister

Short Essay on The Important Functions of an Ecosystem

Ecology

Here is your essay on the Important Functions of an Ecosystem !When we consider the function of an ecosystem, we must describe the flow of energy and the cycling of nutrients. That are interested in things like how much sunlight is trapped by plants in a year, how much plant material is eaten by herbivores, and how many herbivores are eaten by carnivores.The flow of energy in an ecosystem will be discussed in detail in forthcoming chapter, but a brief idea about food chains and food webs can be given here. ADVERTISEMENTS: Organisms of an ecosystem are linked together in food chains. A sheep may eat some grass, and in turn it may be eaten by a person. A mouse may eat some grain, and in turn it may be…

02Oct 2018 by Reese Bannister

Theoretical Approaches towards The Concept of Climax Community | Biology

Ecosystem

Essay on Theoretical Approaches towards The Concept of Climax Community !The concept of climax long was a subject of much controversy and discussion. There are following three theoretical approaches to the climax: 1. Monoclimax theory: This theory is developed largely by Frederick Clements. This theory recognizes only one climax, determined solely by climate, no matter how great the variety of environmental conditions is at the start. All seral communities in a given region, if allowed sufficient time, would ultimately converge to a single climax. ADVERTISEMENTS: The whole landscape would be clothed with a uniform plant and animal community. All other communities than the climax are related to the climax by successional development and are recognized as sub climax, disclimax, preclimax, post-climax and so on. image source: jpkc.scau.edu.cnA subclimax is a…

02Oct 2018 by Reese Bannister

Short Speech on Ecosystem (292 Words)

Ecosystem

Here is your Short Speech on Ecosystem !A classic example of an ecosystem is a small lake or pond the abiotic or non-living parts of a freshwater pond include the water, dissolved oxygen, carbon dioxide, inorganic salts such as phosphates, nitrates and chlorides of sodium, potassium, and calcium, and a multitude of organic compounds such as amino acids, humic acids, etc.The living part of the freshwater pond can be subdivided according to the functions of the organisms, i.e., what they contribute toward keeping the ecosystem operating as a stable, interacting whole. image source: i.ytimg.com ADVERTISEMENTS: In a freshwater pond there are two types of producers, the larger plants growing along the shore or floating in shallow water, and the microscopic floating plants, most of which are algae, that are distributed…

02Oct 2018 by Reese Bannister

Soils Fauna and Soil Flora – Essay

Ecosystem

Essay on Soils Fauna and Soil Flora !Soil supports a wide array of organisms of different body-sizes and taxonomic groups. Generally, soil organisms are classified into three major groups namely micro-fauna and micro-flora, meso-fauna or meio-fauna, and macro-fauna. image source: pasowinerealestate.com ADVERTISEMENTS: Mesoflora and macroflora because occur above the surface of soil (land-surface), therefore are excluded from this discussion: 1. Microfauna: It includes animals with body size within the range of 20 µ to 200µ. It includes all Protozoa and small-sized mites, nematodes, rotifers, tradigrades and copepode Crustacea. Soil inhabiting protozoans like amoeba, ciliates, zoomastigine flagellates occur near the surface soils, while the testate forms like Thecamoeba, Euglypha and Difflugia, have a wider vertical distribution.The common terrestrial polyclad is Bipalium. The nematodes such as Rhabditis, Diplogaster, Tylenchus, Heterodera, Aphelen- choides,…

01Oct 2018 by Reese Bannister

Essay on Animal Populations (933 Words)

Ecology

Here is your essay on Animal Populations !The inherent tendency of all animal populations is to increase in number. But this increase in number is however, not infinite since the carrying capacity of the environment always imposes restriction upon it.Thus, after reaching the carrying capacity level, the population density tends to fluctuate above and below this level and such fluctuation in population between upper and lower limits tends to give some stability to the population. The nature of the processes that regulate the numbers of animals is a major problem of population ecology. image source: i.ytimg.com ADVERTISEMENTS: Many groups of animals are provided with unique and intrinsic self-regulatory mechanism such as failure of reproduction and self-inflicted mortality for controlling the size of the population. Populations grow when natality exceeds mortality,…

01Oct 2018 by Reese Bannister

Important Types of Succession Established in an Ecosystem | Essay

Ecosystem

Essay on the Important Types of Succession established in an Ecosystem !The first organisms to become established in an ecosystem undergoing succession are known as pioneers; the stable community that ends the succession is termed the climax community.The whole series of communities which are involved in the ecological succession at a given area, such as from grass to shrub to forest, and which terminates in a final stable climax community, is called a sere and each of the changes that take place is a seral stage, Each seral stage is a community, although temporary, with its own characteristics and it may remain for a very short time or for many years. image source: fredonia.edu ADVERTISEMENTS: Seres are sometimes classified according to the predominant force that is bringing them about. These…

01Oct 2018 by Reese Bannister

Short Speech on Ecology | For School Students

Ecology

Here is your speech on Ecology for school and college students !Ecology is a vast and encyclopedic biological subject. To a beginner, at the outset, ecology may appear to be quite confusing and discouraging because it seems so diffuse and incoherent. image source: cgpauk.com ADVERTISEMENTS: After all, it must take into account the life habits of over two million different kinds of animals and plants and it considers all manner of influence and interactions among them. Fortunately, however, the innumerable facts of ecology can be distilled into following some relatively basic and simple principles:The ecology is the study of ecosystems or the totality of the reciprocal interactions between living organisms and their environment. The term organism refers to an individual unit constituted to carry on the activities of life.It is…

01Oct 2018 by Reese Bannister

Essay on Autecology and Synecology ! (526 Words)

Ecology

Here is your essay on Autecology and Synecology !As discuss earlier in both plant and animal ecology are artificially divided into two parts, synecology and autecology. A brief comparison of these two ecological subdivisions will explain the basic significance of each of them. Autecology is concerned with the study of the interrelations of individual organisms with the environment.Synecology is concerned with the study of groups of organisms—the community, hence, it is also called community ecology. Both have developed independently, although the knowledge of both of them is necessary for the understanding of the individual, population, or ecosystem. Autecology is experimental and inductive. Synecology is philosophical and deductive. image source: upload.wikimedia.org ADVERTISEMENTS: Autecology because it is concerned with the relationship of an organism to one or more variables such as light,…

01Oct 2018 by Reese Bannister

Growth of Niche Concept and Types of Niches | Essay

Ecology

Essay on the Growth of Niche Concept and Types of Niches !Although Steere (1894) appreciated the niches in his explanation of the way bird species within a genus were segregated on different islands in the Philippines, the term and concept were really first developed by American ornithologist Joseph Grinnell (1917, 1924, 1928). image source: inman.com ADVERTISEMENTS: In his study of California thrashers and other birds he suggested that the niche be regarded as the ultimate distributional or spatial unit occupied by just one species, or subspecies, to which that species is held by structural and instinctive limitations, such as climatic factors, kind and amount of food, suitable nesting sites and cover.Thus, he considered the niche as a subdivision of habitat (Udvardy, 1957) or microhabitat (Odum, 1971), or habitat (Smith, 1977).…

01Oct 2018 by Reese Bannister

Important Methods of Detection and Measurement of Air Pollution

Air Pollution

Essay on Important Methods of Detection and Measurement of Air Pollution !Air pollution is usually measured by sampling of air by thermal and by electrostatic precipitation, Sonkin impactor and electrostatic dust collectors. image source: d.fastcompany.net ADVERTISEMENTS: Table 251. Common air pollutants, their sources and pathological effects on man (after Southwick, 1976):PollutantsWhere they come from (source)Pathological effect on man 1. AldehydesThermal decomposition of fats, oil, or glycerol.Irritate nasal and respiratory tracts. 2. AmmoniasChemical processes—dye- making; explosives; lacquer; fertilizer.Inflame upper respiratory passages. 3. ArsinesProcesses involving metals or acids containing arsenic soldering.Break down red cells in blood, damage kidneys; cause jaundice. 4. Carbon monoxidesGasoline motor exhausts; burning of coal.Reduce oxygen-carrying capacity of blood. 5. ChlorinesBleaching cotton and flour; many other chemical processes.Attack entire respiratory tract and mucous membranes of eyes; cause pulmonary edema:…