Basics of Ecology | Environment

Basics of Ecology | Environment

hi everyone welcome to civil qualify so we are revising environment and this is part one we've just begun so in this video we will talk about basics of ecology so you can follow this course and join it for free at seven course fi dot n slash courses slash environment revision and you can follow us on facebook at slash civil code c file you can also download this civil course if my android app for free from the google play store alright then let's begin so we'll look at all the terms relevant for the ecology concept one by one and after we understand all the terms we'll be through with the basics of ecology so the first term is ecology psychology is the scientific study of the reciprocal relationship it is the scientific study of the reciprocal relationships between organisms with their environment so there are two terms that we have to understand here is one that it is the sign it is the reciprocal relationship between organisms with their environment so let us take an example of happy sing so there's a person called happy sing is extremely happy and he has a beautiful house in the countryside and he has a lot of trees and he has your own field very gross crops so he gets food from these crops and he has a pet so let's call this pet as Shirou sorry for the bad drying right so happy Singh has a farm a house and few trees and a pet so this is happy Singh's environment where he has all the living and nonliving things and the he interacts with these things for his day-to-day activities so if you look at this environment from Sheila's point of view then everything outside this cloud Jerusalem would be Shiro's environment so happy Singh would be part of Shiro's environment and share would be a part of happy Singh's environment so both of them are interacting happy Singh requires shiru for his house for his field safety and she requires happy Singh to feed him right so this is an environment and the way species interact in this environment is ecology right so the next term is environment so when we define environment it is everything that affects an organism during its lifetime is collectively known as its environment so environment can be biotic as well as a biotic so biotic is living organisms and abiotic is non living organisms so if you if it thing till now if you thought that environment is only living organisms you're wrong in miming environment consists of both the living as well as nonliving organisms so biotic plus abiotic so let us look at the biotic and abiotic features of environment so when we talk about abiotic energy radiation temperature water fire gravity soil are some of the characteristics of abiotic characteristics of the environment and biotech consists of green plants non green plants decomposers parasites symbionts animals and man so if you look at this diagram missed this image you will see that there are a lot of living organisms this deer and fish there is a butterfly there are some turtles and there are some non living organisms as well should this water and air and there's a if there is a Sun there will be sunlight right so everything collectively is our environment next term is the levels of organism levels of organizations in ecology so there are six levels the first one is the individual then population community ecosystem biome and biosphere so let us understand these terms in detail so look at this diagram so there is an individual this deer is an individual a single living organism so if we talk about a collective group of this these deer we will see that there is a population a family so that would be a population of the same species next term is community so community is a group of species interacting amongst themselves and in this particular environment you can see that there is a tree there's some monkeys there could be an owl and rabbit and there are the deers that this population is interacting with another set of population and these collective group of populations is known as a community then we move on to the ecosystem so there's a difference between ecosystem and community community consists of only living organisms interacting among amongst themselves they are interdependent over each other interdependent on each other the the eco system consists of living as well as nonliving organisms speak different species interacting with soil land and water so a group of communities and then completely interdependent on each other and living in environment is an ecosystem so there's a biome so biome is a group of ecosystems and we'll talk about it later in this video and the biosphere is a collective zone of three spheres that are hydrosphere lithosphere and atoms atmosphere so let us look at these terms one by one so first we'll see at ecosystem so the ecosystem is a structural and functional unit of a biosphere consisting of community of living beings and the physical environment both interacting and exchanging materials between them so we'll look at the same diagram so this is an ecosystem so it is a structural functional unit of the biosphere so this is your biosphere so these ecosystems collectively from biome and then they form a biosphere so it is a community of living beings see I told you a few seconds earlier that ecosystem has living organisms and the physical environment both interacting and exchanging materials between them right so the abiotic components are energy rainfall temperature atmosphere latitudes and longitudes and the biotic components are primary producers autotrophs such as plants and consumers heterotrophs as such as animals so the community is you're a group of living species and your ecosystem is an environment where living species are interacting with the physical environment of biotic as well as abiotic components right so the next term is equal to so this is important ecotone is the zone of junction between two or more diverse ecosystems between two or more diverse ecosystems example mangroves estuary grassland riverbanks etcetera so this is a term known as edge effect so this is a larger number of species are formed in this particular ecotone this phenomena is known as edge effect so let us understand with the help of a diagram so this is a mountain and there's a river flowing through this mountain which eventually leads to the plains and form a lake right so while it was flowing in its earlier stage from the mountain it went through a forest and eventually landed to a plane so this Junction where it was moving from the forest from the terrain and entering the plains this area where it was just about to leave the earlier habitat and entering into the new habitat the marshland habitat is the ecotone so it is a mixture it is a junction between the two ecosystems similarly there is another eco tolling this diagram which would be when it was exiting from the marshland habitat and entering the lake habitat so this Junction is another ecotone so this is an importance of this eco toned as it has a large number of species it has a lot of diversity and this is known as the edge effect so the next term is niche so niche is a unique functional rule or a place of species in an ecosystem this could be habitat food reproduction physical and chemical roles so it is a description of all the biological physical and chemical factors that as peachy's needs to survive stay healthy and reproduce so if we look at this term an itch is a functional role that is a species has a particular role in an ecosystem it has a habitat it interacts with the environment it requires food it itself serves as the food for a particular species and it has a functional role of reproducing helping and evolving the species and interacting with the physical and chemical environment so this nice is extremely important ne we need to understand the importance of this niche so if we do not understand it it will eventually lead to stopping the evolution process and it may even lead to extinction of a particular species right so the next term is biome biome is a group of ecosystems so the characteristics that we look at while understanding the biomes is the climate next flora and fauna flora and fauna and the next thing that we look at is soil so these things these three four important aspects tell us about a particular biome so the entire Earth has been divided into various biomes based on these factors such as tropical rainforests tropical deserts forests savanna tropical grasslands warm deserts so if you move from the equator to the poles zero degrees to ninety degrees of latitude of latitude you will move from warm to the cold atmosphere so as you keep moving upwards towards the ninety degree latitude which is the poles you we'll come across temperate deciduous forests prairies cold deserts so this is you're moving from one longitude to the other so the earth is round so you will move from 0 to 180 degrees so this is how these biomes have been categorized so there are the boreal forest Tundra there's another called taiga and then the polar deserts so these are the biomes important biomes next is the biosphere so the biosphere is a combination of the three important spheres which is atmosphere hydrosphere and lithosphere so the importance of a biosphere is it is defined as a place where life can exist where life can exist so as you know life can exist in air there are birds in hydrosphere there are various plants and fishes and in little sphere on the land solito sphere is land hydrosphere is water and atmosphere is air so if you make a Venn diagram it would be something like this this being atmosphere this would be hydrosphere and this would be eco sphere so this Junction the junction of all the three spheres would be our biosphere all right I hope you could understand this it's very simple so this was biosphere fine so this was all for this video in the next video we'll be discussing part 2 functions of ecosystem so functions of ecosystem in part 2 so you can follow this course at this URL follow us on Facebook and don't forget to download this evil course if i android app from Google Play Store this is absolutely free and please do this thank you

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7 thoughts on “Basics of Ecology | Environment

  1. sir your civil coursify app and your all videos to simple ,well understanding easly and so good with convinient time plz make more videos

  2. Quality content…thnking u for de donon such complex itunes with that much ease…Looking forward to get few more..

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