The document discusses the history and structure of ecosystems. It defines an ecosystem as a complex unit of living and non-living things that interact and exchange materials. Ecosystems have biotic components like producers, consumers, and decomposers, as well as abiotic components like soil, water, and nutrients. Producers use photosynthesis to convert sunlight into chemical energy, which consumers then use as food and decomposers break down dead remains, recycling nutrients for producers. Energy and matter flow through the ecosystem via these interactions and components.
ecosystem topic will help you in understanding the basic means and other components like structure, functions, types, ecological pyramid, energy flow in ecosystem and many more environment related studies.
ecosystem topic will help you in understanding the basic means and other components like structure, functions, types, ecological pyramid, energy flow in ecosystem and many more environment related studies.
It is quite interesting to note that the only producer of food in the entire world is PLANT. All others are consumers, and depend only on plants to provide food to all the living organisms and species.
A food web is a more complex network, graphical model depicting the many food chains linked together to show the feeding relationships of organisms in an ecosystem.
Food web is an important ecological concept. Basically, food web represents feeding relationships within a community (Smith and Smith 2009)
Dr. K. Rama Rao
Govt. Degree College
TEKKALI; Srikakulam Dt. A. P
Food chain and Food Web
Food chain and food web in ecosystem
Food chain
Types of food chains
1. Grazing food chain
2. Detritus food chain
Food web
Significance of food chain and food web
Ecology and Ecosystem
Ecology
Ecosystems
Ecology and Ecosystem
Types of Ecosystem
According to environment- 1. Terrestrial Ecosystem
2. Aquatic Ecosystem
According to the degree of human intervention –
1. Natural ecosystem
2. Artificial or Man made ecosystem
Component of ecosystem- Abiotic and Biotic
Function of ecosystem
The Ecosystem - Its Structure and function plays a key role in the sustenance of Life on this Earth. Be it land, air, water .... the ecosystem decides the survival ...
It is quite interesting to note that the only producer of food in the entire world is PLANT. All others are consumers, and depend only on plants to provide food to all the living organisms and species.
A food web is a more complex network, graphical model depicting the many food chains linked together to show the feeding relationships of organisms in an ecosystem.
Food web is an important ecological concept. Basically, food web represents feeding relationships within a community (Smith and Smith 2009)
Dr. K. Rama Rao
Govt. Degree College
TEKKALI; Srikakulam Dt. A. P
Food chain and Food Web
Food chain and food web in ecosystem
Food chain
Types of food chains
1. Grazing food chain
2. Detritus food chain
Food web
Significance of food chain and food web
Ecology and Ecosystem
Ecology
Ecosystems
Ecology and Ecosystem
Types of Ecosystem
According to environment- 1. Terrestrial Ecosystem
2. Aquatic Ecosystem
According to the degree of human intervention –
1. Natural ecosystem
2. Artificial or Man made ecosystem
Component of ecosystem- Abiotic and Biotic
Function of ecosystem
The Ecosystem - Its Structure and function plays a key role in the sustenance of Life on this Earth. Be it land, air, water .... the ecosystem decides the survival ...
Want to know what an ecosystem is? Here’s your complete guide to learning all there is to know about ecosystems - its components, functions, and human impacts.
In this episode, we are going to learn the following aspects:
1. Definition of an Ecosystem
2. Biotic Components
3. Abiotic Components
4. Functions of an ecosystem
5. Processes of ecosystems.
Ozone layer
Ozone hole
Characteristics of Ozone layer
Cause of O3 depletion:
Form of UV coming from sun:
Effects of UV rays
Ozone hole improvement
Importance of CFCs at the beginning
Alternative sources of CFCs
How does the Global worming take place??
Greenhouse gases
Impacts of Global Warming
The Presentation contents,
>Definition of central tendency
>Definition of measures of central tendency
>Objective of central tendency
>Types of central tendency
>Definition of Arithmetic mean, median with merits, demerits
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
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This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
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Orchestrator execution result
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Send an interactive Slack channel message (using buttons)
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And...
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Length: 30 minutes
Session Overview
-------------------------------------------
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https://www.rttsweb.com/jmeter-integration-webinar
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2. History of Ecosystem
The term ecosystem first appeared in a 1935
publication by the British ecologist Arthur Tansley
(1935). However, the term had been coined already
in 1930 by Tansley's colleague Roy Clapham.
Tansley (1939) expanded on the term in his later
work, adding the Ecotope concept to define the
spatial context of ecosystems
3. According to woodbury (1954) Ecosystem is a complex in
which habitat, plants and animals are considered as one
interesting unit, the materials and energy of one passing
in and out of the others.
According to E.P. Odum, the ecosystem is the basic
functional unit of organisms and their environment
interaction with each other and with their own
components.
e.g. One square meter of grassland, a large lake, a large
tract of forest, balanced aquarium, a certain area of river
and ocean. All the ecosystems of the earth are connected
to one another, like, river ecosystem is connected with
the ecosystem of ocean, and a small ecosystem of dead
logs is a part of large ecosystem of a forest. A complete
self-sufficient ecosystem is rarely found in nature but
situations approaching self-sufficiency may occur.
4. Structure of Ecosystem
The structure of an ecosystem is basically a
description of the organisms and physical
features of environment including the
amount and distribution of nutrients in a
particular habitat. From the structure point
of view, all ecosystems consist of the
following basic components:
1. Abiotic components
2. Biotic components
5.
Abiotic Components: An ecosystem possesses both
biotic (living) and abiotic non-living components.
The abiotic components include soil, water, light,
inorganic nutrients and weather
Biotic Components: The biotic components of the
ecosystem can be categorized as either producers or
consumers. Producers are autotrophic organisms with
the capability of carrying out photosynthesis and
making food for themselves, and indirectly for the
other organisms as well. In terrestrial ecosystems the
producers are predominantly green plants, while in
freshwater and marine ecosystems the dominant
producers are various species of algae.
6. Biotic components
The biotic components include all living
organisms present in the environmental
system. From nutrition point of view, the
biotic components can be grouped into three
basic components:
1.
Producer
2.
Consumers and
3.
Decomposers or reducers and transformers
7. 1. Producers
The producers are the autotrophic elements –chiefly green
plants. They use radiant energy of sun in photosynthetic
process whereby carbon dioxide is assimilated and the
light energy is converted into chemical energy. The
chemical energy is actually locked up in the energy rich
carbon compounds. Oxygen is evolved as byproduct in
the photosynthesis.
This is used in respiration by all living things. Algae and
other hydrophytes of a pond, grasses of the field, trees of
the forests are examples of producer. Chemosynthetic
bacteria and carotenoid bearing purple bacteria that also
assimilate carbon-dioxide with the energy of sunlight but
only in the presence of organic compounds also belong to
this category.
8. 2. Consumer
Those living members of ecosystem which consume the
food synthesized by producers are called consumers.
Under this category are included all kinds of animals
that are found in an ecosystem. There are different
classes or categories of consumers that are discussed
in following.
Primary consumers: Those are dependent on
producers or green plants for their food called
primary consumers (purely herbivorous). e.g. Insects
rodents rabbit, cow, goat for terrestrial ecosystem. On
the other hands crustaceans, molluscs etc. for aquatic
habitat.
According to Elton, 1939 primary consumers are the
“Key industry animals” in a particular ecosystem.
9.
Secondary consumers: Those animals are adapted to
consume herbivores as well as plants as their food
called secondary consumers. They are carnivores and
omnivores. e.g. sparrow, crow, fox etc.
Tertiary consumers: These are the top carnivores
which prey upon secondary consumers as well as
other carnivores, omnivores and herbivores. Lions,
tigers hawk, vulture etc. are considered as tertiary or
top consumers.
Parasites, scavengers and saprobes: They are
consumers. The parasitic plants and animals utilize
the living tissues of different plants and animals. The
scavengers and saprobes utilize dead remains of
animals and plants as their food.
10.
11. 3. Decomposers and transformers
Decomposers attack the dead remains of producers
and consumers and degrade the complex organic
substances into simpler compounds.
The simple organic matters are then attacked by
another kind of bacteria, the transformers which
change these organic compounds in to the inorganic
forms that are suitable for reuse by producers of
green plants.
The decomposers and transformers play very
important role in maintaining the dynamic nature of
ecosystems.
12.
Function of Ecosystem
Action of biotic and abiotic components with the help
of solar energy through the ecosystem is called
function of ecosystem. In any ecosystem we have the
following functional components;
1. Inorganic constituents (air, water and mineral salts)
2. Organisms (plants, animals and microbes) and
3. Energy input which enters from outside ( the sun)
13.
The principal steps in the operation of
ecosystem
Thus the principal steps in the operation of ecosystem
are as follows:
1. Reception of radiant energy of sun.
2. Manufacture of organic materials from inorganic ones
by producers,
3. Consumption of producers by consumers and further
elaboration of consumed materials and
4. After the death of producers and consumers, complex
organic compounds are degraded and finally
converted by decomposers and converters into such
forms as are suitable for reutilization by producers.