This document discusses key concepts of ecosystems, including their components, interactions, and limitations. The major points covered are:
- An ecosystem consists of organisms interacting with each other and their environment. It is characterized by nutrient cycling, energy flow, and structure.
- Components include abiotic factors like sunlight and biotic factors like producers, consumers, and decomposers. Nutrients and energy move through food chains and webs between trophic levels.
- Ecosystems are linked by cycles like carbon, oxygen, and nitrogen that recirculate materials. Nutrient availability can limit ecosystem development according to the laws of maximum and minimum.
- Environmental factors like light, temperature, water, wind, top
Ecology derived from two Greek word “oikos” means house, habitation or place of living & “logos” means study.
Definition: Ecology is the study of interrelationship between living organism and their physical and biological environment.
Ecology derived from two Greek word “oikos” means house, habitation or place of living & “logos” means study.
Definition: Ecology is the study of interrelationship between living organism and their physical and biological environment.
Ecosystem as defined as interaction between the organisms and environment. Or living community of plants and animals in are together with non living components of environment such as soil, water and air consists the ecosystem. The word eco system coined by A.G Tensely in 1935. This ecosystem has variety of life such as flora and fauna.
Ecosystem as largest functional unit of ecology which comprises with biotic communities mutually related with their nonliving or a biotic environment.
-WHAT ARE ECOSYSTEMS?
-Parts of an Ecosystem
-Different types of organisms live in an ecosystem.
-Community
-Habitat
-Kinds Of Ecosystem
-Types of Ecosystems
-Components of Ecosystem
-Functions of an ecosystem
-PROCESSES OF ECOSYSTEMS
-Energy Flow Chart
-Types of Food Chains (Samples)
-Food Web
-Ecological Pyramids
-Types of Ecological Pyramids
-Industrial Ecology and Recycling Industry
-Recycling
-Environmental management system (EMS)
-ISO 14000
-Objectives of ISO 14000
-How are these standards developed?
-The 17 requirements of the ISO 14001
-Other standards in ISO 14001 series
Environmental Sciences Second Semester B.pharm RTMNU
An ecosystem is a grouping of organisms that interact with each other and their environment in such a way as to preserve the grouping.
Content:-
What is an ecosystem
Three major principles of ecosystem
Components of an ecosystem
Abiotic components
Biotic components
Movement of energy and nutrients
Food chain
Food webs
Trophic levels, biomass and biome
Linkages and interactions in an ecosystem
Carbon cycle and oxygen cycle
Model of nutrient cycle
Environmental Limitation in ecosystem development.
Nutrient cycling:
Movement of chemical elements from the environment into living organisms and from them back into the environment through organisms live, grow, die and decompose.
Energy flow:
Energy is required to transform inorganic nutrients into organic tissues of an organism.
Energy is the driving force to the work of ecosystem.
Structure
It refers to the particular pattern of inter-relationships that exists between organisms in an ecosystem.
Energy and Nutrients passed through the ecosystem by food chains and webs from lower trophic level to the higher trophic level.
However, only 5% to 20% energy and nutrients are transferred into higher trophic level successfully.
For this reason, first trophic level has the largest number of organisms, and second trophic level is less than first one; the third level is less than second level, and so on.
Nitrogen cycle can be affected by man in five major ways:
Fertilizer production (mainly nitrates and ammonium salts) to grow more food by increasing yields, and replenishing lost nitrogen from the soil.
Burning of fossil fuels in cars, power plants, and heating which puts nitrogen dioxide into the atmosphere.
Increasing animals wastes (nitrates) from more people and from livestock and poultry grown in ranches.
Increased sewage flows from industry and urbanization.
Increased erosion of and runoff nearby streams, lakes and rivers from cultivation, irrigation, agricultural wastes, mining, urbanization and poor land use.
Nutrients (chemicals, minerals or elements) are circulated around the ecosystem and recycled continually.
Gersmehl identified three storage compartments.
Litter: the surface layer of vegetation which may eventually become humus.
Biomass: the total mass of living organisms, per unit area.
Soil: the nutrients store in soil (weathered material) and semi-weathered material.Quality of light:
Red and blue light: green plants (photosynthesis)
Green light: plants in woods or deep water
Ultraviolet light: retards plant growth
Duration of light
Affect the behaviour of plants and animals (flowering, migration, mating….)
Intensity of light:
Controlling factor for rate of photosynthesis
Net productivity is the function of photosynthesis and respiration.
Wind can act as an environmental factor
Directly by causing mechanical damage to plants
Indirectly affecting relative humidity and evaporation rates.
High wind speed increases the rate of transpiration.
J
Ecosystem as defined as interaction between the organisms and environment. Or living community of plants and animals in are together with non living components of environment such as soil, water and air consists the ecosystem. The word eco system coined by A.G Tensely in 1935. This ecosystem has variety of life such as flora and fauna.
Ecosystem as largest functional unit of ecology which comprises with biotic communities mutually related with their nonliving or a biotic environment.
-WHAT ARE ECOSYSTEMS?
-Parts of an Ecosystem
-Different types of organisms live in an ecosystem.
-Community
-Habitat
-Kinds Of Ecosystem
-Types of Ecosystems
-Components of Ecosystem
-Functions of an ecosystem
-PROCESSES OF ECOSYSTEMS
-Energy Flow Chart
-Types of Food Chains (Samples)
-Food Web
-Ecological Pyramids
-Types of Ecological Pyramids
-Industrial Ecology and Recycling Industry
-Recycling
-Environmental management system (EMS)
-ISO 14000
-Objectives of ISO 14000
-How are these standards developed?
-The 17 requirements of the ISO 14001
-Other standards in ISO 14001 series
Environmental Sciences Second Semester B.pharm RTMNU
An ecosystem is a grouping of organisms that interact with each other and their environment in such a way as to preserve the grouping.
Content:-
What is an ecosystem
Three major principles of ecosystem
Components of an ecosystem
Abiotic components
Biotic components
Movement of energy and nutrients
Food chain
Food webs
Trophic levels, biomass and biome
Linkages and interactions in an ecosystem
Carbon cycle and oxygen cycle
Model of nutrient cycle
Environmental Limitation in ecosystem development.
Nutrient cycling:
Movement of chemical elements from the environment into living organisms and from them back into the environment through organisms live, grow, die and decompose.
Energy flow:
Energy is required to transform inorganic nutrients into organic tissues of an organism.
Energy is the driving force to the work of ecosystem.
Structure
It refers to the particular pattern of inter-relationships that exists between organisms in an ecosystem.
Energy and Nutrients passed through the ecosystem by food chains and webs from lower trophic level to the higher trophic level.
However, only 5% to 20% energy and nutrients are transferred into higher trophic level successfully.
For this reason, first trophic level has the largest number of organisms, and second trophic level is less than first one; the third level is less than second level, and so on.
Nitrogen cycle can be affected by man in five major ways:
Fertilizer production (mainly nitrates and ammonium salts) to grow more food by increasing yields, and replenishing lost nitrogen from the soil.
Burning of fossil fuels in cars, power plants, and heating which puts nitrogen dioxide into the atmosphere.
Increasing animals wastes (nitrates) from more people and from livestock and poultry grown in ranches.
Increased sewage flows from industry and urbanization.
Increased erosion of and runoff nearby streams, lakes and rivers from cultivation, irrigation, agricultural wastes, mining, urbanization and poor land use.
Nutrients (chemicals, minerals or elements) are circulated around the ecosystem and recycled continually.
Gersmehl identified three storage compartments.
Litter: the surface layer of vegetation which may eventually become humus.
Biomass: the total mass of living organisms, per unit area.
Soil: the nutrients store in soil (weathered material) and semi-weathered material.Quality of light:
Red and blue light: green plants (photosynthesis)
Green light: plants in woods or deep water
Ultraviolet light: retards plant growth
Duration of light
Affect the behaviour of plants and animals (flowering, migration, mating….)
Intensity of light:
Controlling factor for rate of photosynthesis
Net productivity is the function of photosynthesis and respiration.
Wind can act as an environmental factor
Directly by causing mechanical damage to plants
Indirectly affecting relative humidity and evaporation rates.
High wind speed increases the rate of transpiration.
J
Ecology is the scientific study of the intricate relationships between living organisms and their environment. It seeks to understand how organisms interact with one another and their surroundings, from the smallest microorganisms to the largest ecosystems. One fundamental aspect of ecology is the examination of biogeochemical cycles, which are essential processes that govern the flow of elements and compounds through the Earth's ecosystems. These cycles encompass the movement of essential elements like carbon, nitrogen, phosphorus, and water between the living and non-living components of the environment. For example, the carbon cycle involves the exchange of carbon dioxide between the atmosphere, plants, and animals, regulating the levels of this greenhouse gas in the atmosphere and influencing climate. The nitrogen cycle is another vital process, as it controls the availability of nitrogen for plants and, subsequently, for all organisms in a given ecosystem. Biogeochemical cycles are critical to maintaining the delicate balance of nutrients and elements necessary for life on Earth, and any disruptions to these cycles can have profound ecological consequences. Understanding these cycles is crucial for environmental conservation and for addressing global challenges like climate change and nutrient pollution. In sum, ecology and biogeochemical cycles are intimately linked, providing the foundation for understanding how life and the environment are intricately interconnected and interdependent.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
2. Contents
What is an ecosystem
Three major principles of ecosystem
Components of an ecosystem
Abiotic components
Biotic components
Movement of energy and nutrients
Food chain
Food webs
Trophic levels, biomass and biome
Linkages and interactions in an ecosystem
Carbon cycle and oxygen cycle
Model of nutrient cycle
Environmental Limitation in ecosystem development.
3. What is an ecosystem
An ecosystem is a grouping of
organisms that interact with each other
and their environment in such a way as
to preserve the grouping.
There is a great variety of ecosystems
in existence, all of them are
characterized by general structural and
functional attributes.
4.
5.
6. Three major principles of ecosystem
Nutrient cycling:
Movement of chemical elements from the
environment into living organisms and from them
back into the environment through organisms live,
grow, die and decompose.
Energy flow:
Energy is required to transform inorganic nutrients
into organic tissues of an organism.
Energy is the driving force to the work of ecosystem.
Structure
It refers to the particular pattern of inter-
relationships that exists between organisms in an
ecosystem.
12. Abiotic components
They form the environment and
determine the type / structure of
ecosystem.
Sunlight (temperature)
Nutrients
• Rainfall, minerals, carbon, nitrogen,…..
Type of ecosystems:
Tropical rainforest, Desert, Tundra,
Grassland,…..
14. Biotic components
Producers (Autotrophs):
All green plants. They use solar energy,
chlorophyll, inorganic nutrients and water to
produce their own food. (Photosynthesis)
Consumers:
They consume the organic compounds in plant
and animal tissues by eating.
• Herbivores (plant feeders) Primary consumers
• Carnivores (meat eaters) Secondary consumers
• Omnivores (general feeders)
15. Biotic components
Decomposers
They are tiny organisms includes bacteria and
fungi, which turn organic compounds in dead
plants and animals into inorganic materials.
They cause the continual recirculation of
chemicals within ecosystem (nutrient cycle)
21. Trophic Levels
A trophic level means a feeding level.
First level – all producers
Second level – all herbivores
Third level – first level carnivores
Fourth level – second level carnivores
So on……..
22. Trophic levels
Energy and Nutrients passed through the
ecosystem by food chains and webs from
lower trophic level to the higher trophic level.
However, only 5% to 20% energy and
nutrients are transferred into higher trophic
level successfully.
For this reason, first trophic level has the
largest number of organisms, and second
trophic level is less than first one; the third
level is less than second level, and so on.
25. Biomass
Biomass means the total combined
weight of any specified group of
organisms.
The biomass of the first trophic level is
the total weight of all the producers in a
given area.
Biomass decreases at higher trophic
levels.
30. Biome
This is a total different concept apart
from Biomass.
Biome are defined as
“the world’s major communities, classified
according to the predominant vegetation
and characterized by adaptations of
organism to that particular environment.
31. Linkages and Interactions in an
ecosystem
Carbon and Oxygen cycle
Nitrogen cycle
A model of nutrient cycle
36. Nitrogen cycle
Nitrogen cycle can be affected by man in five
major ways:
Fertilizer production (mainly nitrates and ammonium
salts) to grow more food by increasing yields, and
replenishing lost nitrogen from the soil.
Burning of fossil fuels in cars, power plants, and heating
which puts nitrogen dioxide into the atmosphere.
Increasing animals wastes (nitrates) from more people
and from livestock and poultry grown in ranches.
Increased sewage flows from industry and urbanization.
Increased erosion of and runoff nearby streams, lakes
and rivers from cultivation, irrigation, agricultural wastes,
mining, urbanization and poor land use.
37. Model of Nutrient Cycle
Nutrients (chemicals, minerals or elements)
are circulated around the ecosystem and
recycled continually.
Gersmehl identified three storage
compartments.
Litter: the surface layer of vegetation which
may eventually become humus.
Biomass: the total mass of living organisms,
per unit area.
Soil: the nutrients store in soil (weathered
material) and semi-weathered material.
40. Environmental Limitation in
ecosystem development
Principles of limiting factors
Law of the maximum
Law of the minimum
Principle of holocoenotic environment
Limiting factors of an environment
Light
Temperature
Water
Wind
Topography
Soil
Biotic factors
42. Principle of holocoenotic environment
A German ecologist Karl Friederich (1927) suggested
that 'community-environmental relationship are
holocoenotic'. This means that there are no 'walls' or
barriers between the factors of an environment and
the organism or biotic community.
If one factor is changed, almost all will change
eventually.
Example: Temperature Air can hold more water
Evaporation rates
Transpiration
Plants absorb soil water Free water in soil
Dryness of soil
Relative Humidity
43. Limiting factors of an environment
Light
Temperature
Water
Wind
Topography
Soil
Biotic Factors
44. Light
Light is an very important environment
factor:
Source of energy for ecosystem
Control factor for reproduction and migration.
45. Light
Quality of light:
• Red and blue light: green plants (photosynthesis)
• Green light: plants in woods or deep water
• Ultraviolet light: retards plant growth
Duration of light
• Affect the behaviour of plants and animals (flowering,
migration, mating….)
Intensity of light:
• Controlling factor for rate of photosynthesis
• Net productivity is the function of photosynthesis and
respiration.
46.
47. Temperature
Very important factor affecting
Directly effects on organisms
Indirectly effects in modifying other environmental
factors such as relative humidity and water availability.
Each species has its own minimum, maximum
and optimum temperatures for life. (vary with
age and water balances in the body)
Aquatic life has narrower tolerance ranges for
temperature than those which live on land.
Tropical plants: > 15oC,
Temperate cereals: >-2oC,
Coniferous forests: withstand many degrees below
freezing.
48. Water
Water restrict ecosystem development
because ,most organisms need large amounts
of water to survive.
Water requirement for plants will vary both
with environmental conditions and among
different species.
Actual rate of transpiration is the function of
relative humidity
Air movement
Size of leaves
Size of stomata
49. Water
Plants classification by water requirement.
Xerophytes: plants can survive in extremely arid areas.
Halophytes: plants can survive in saline conditions
Hydrophytes: plants live in water or in moist soil.
50. Wind
Wind can act as an environmental factor
Directly by causing mechanical damage to plants
Indirectly affecting relative humidity and
evaporation rates.
High wind speed increases the rate of
transpiration.
Mountain summits, coasts and open plains
vegetation may be dwarfed as a result of
wind action.
51. Topography
Topography can influence ecosystem
development in three major ways.
Direct effects of altitude on temperature
• normal lapse rate (-6.5oC/km)
The combination of changes in temperature
and relative humidity
• an altitudinal zonation of ecosystems.
Slope orientation and angle
• South-facing slopes (in the northern hemisphere)
are warmer and drier than north-facing slopes.
• Angle of slope will be a critical factor in soil
formation and drainage.
54. Soil
Attributes of soils, such as texture, pH,
soil climate and organic content operate
in a closely inter-related fashion to exert
control on
rates of decomposition
nutrient cycling,
plant distribution
productivity.
55. Biotic Factors
Biotic factors are the interactions that occur
between living things.
Some species are beneficial or even essential for
the existence of others, whereas some may be
harmful.
The dominant plants will grow tallest and modify the
light conditions for the rest of the community.
Plants struggle for light will influence root development
and the competition for water and nutrients in the soil.
Many plants rely on animals for pollination and seed
dispersal.
Many animals are directly dependent on plants for food.
56. Biotic Factors
Man is by far the most important biotic factor.
Man modifies of ecosystems by fire, hunting
and agriculture,…...
Industrialization and the intensification of
agriculture, man has obliterated large areas
of natural systems and caused pollution of
both terrestrial and aquatic habitats.