This document discusses conservation of biological diversity or biodiversity. It defines biodiversity as all the living organisms on Earth, from microorganisms to plants and animals. Biodiversity exists at the genetic, species, and ecosystem levels. The origin of life on Earth began over 4 billion years ago. Factors that affect biodiversity include climate change, global warming, pollution, deforestation, food production practices, and human conflicts. Biodiversity provides many benefits and ecosystem services including food, medicines, materials, and ecological functions. It is important for resistance to catastrophes and each species depends on other species for survival in balanced ecosystems. Loss of biodiversity could destabilize ecosystems and agriculture. Some species now in danger of
Biodiversity is variety…
of organisms in a given area
of genetic variation within a population
of species in a community
of communities in an ecosystem
Humans need to understand & preserve biodiversity for our own survival.
Biodiversity is the degree of variation of life. This can refer to genetic variation, species variation, or ecosystem variation. Biologists most often define biodiversity as the "totality of genes, species, and ecosystems of a region".
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Biodiversity is variety…
of organisms in a given area
of genetic variation within a population
of species in a community
of communities in an ecosystem
Humans need to understand & preserve biodiversity for our own survival.
Biodiversity is the degree of variation of life. This can refer to genetic variation, species variation, or ecosystem variation. Biologists most often define biodiversity as the "totality of genes, species, and ecosystems of a region".
Marine Biodiversity : A Global Pattern Essay
Biodiversity And Biodiversity
Big Idea Biodiversity
Biodiversity And Its Impact On Biodiversity
biodiversity Essay
Biodiversity
Biological Diversity
The Importance Of Biodiversity
Essay about The Importance of Biodiversity
Essay On Endangered Plants
Persuasive Essay On Biodiversity Conservation
Reflection Essay On Biodiversity
Biodiversity Loss And Loss Of Species Essay
Biodiversity And Its Effects On The Environment
Essay on Biodiversity
The Study of Biodiversity
Biodiversity And Its Effects On Biodiversity
Biological Diversity Essay
The Importance of Biodiversity
BIODIVERSITY AND HEALTHY SOCIETY BY GROUP 1KaliAndres
Biodiversity supports human and societal needs, including food and nutrition security, energy, development of medicines and pharmaceuticals and freshwater, which together underpin good health. It also supports economic opportunities, and leisure activities that contribute to overall wellbeing.
Coastal marsh. Wetlands in the Atchafalaya National Wil.docxmonicafrancis71118
Coastal marsh.
'Wetlands in the
Atchafalaya National
Wildlife Refuge in
Louisiana provide valuable
ecosystem services.
2 Communities and Ecosystems
Campbell Essential Biology with Physiology, Fourth Edition, by Eric J. Simon, Jean L. Dickey, and Jane B. Reece. Published by Benjamin Cummings.
Copyright CD, 2013 by Pearson Education, Inc.
CHAPTER CONTENTS
The Loss of Biodiversity 426
Community Ecology 428
Ecosystem Ecology 437
Conservation and Restoration Biology 444
CHAPTER THREAD
Biodiversity in Decline
BIOLOGY AND SOCIETY
Why Biodiversity Matters 425
THE PROCESS OF SCIENCE
How Does Tropical Forest Fragmentation
Affect Biodiversity? 446
EVOLUTION CONNECTION
Can Biophilia Save Biodiversity? 448
Biodiversity in Decline BIOLOGY AND SOCIETY
Why Biodiversity Matters
As the human population has expanded, hundreds of species have become extinct and thou-
sands more are threatened with extinction. These changes represent a loss in biological di-
versity, or biodiversity. Biodiversity loss goes hand in hand with the disappearance of natural
ecosystems. Only about a quarter of Earth's land surfaces remain untouched by human altera-
tions. We see the evidence of our impact on natural ecosystems every day. We live and work
in altered landscapes. And though we may be less aware of it, our impact on the oceans is also
extensive.
What is the value of biodiversity? Most people appreciate the direct benefits provided by
certain ecosystems. For example, you probably know that we use resources—such as water,
wood, and fish—that come from natural or near-natural ecosystems. These resources have
economic value, as the massive 2010 oil spill in the Gulf of Mexico dramatically demonstrated.
Billions of dollars were lost by fishing, recreation, and other industries as a result of the di-
saster. But human well-being also depends on less obvious services that healthy ecosystems
provide. The coastal wetlands affected by the Gulf oil spill normally act as a buffer against hur-
ricanes, reduce the impact of flooding, and filter pollutants. The wetlands also furnish nesting
sites for birds and marine turtles and breeding areas and nurseries for a wide variety of fish
and shellfish. Natural ecosystems provide other services as well—such as recycling nutrients,
preventing erosion and mudslides, controlling agricultural pests, and pollinating crops. Some
scientists have attempted to assign an economic value to these benefits. They arrived at an
average annual value of ecosystem services of $33 trillion, almost twice the global gross
national product for the year they published their results. Although rough, these estimates
make the important point that we cannot afford to take biodiversity for granted.
In this chapter, we'll examine the interactions among organisms and how those relation-
ships determine the features of communities. On a larger scale, we'll explore the dynamics
of ecosystems. Finally, we'll consi.
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Answer (6)THREE WAYS HUMAN HAVE NEGATIVELY IMPACTED BIODIVERSITY .pdfangelsfashion1
Answer (6)
THREE WAYS HUMAN HAVE NEGATIVELY IMPACTED BIODIVERSITY :-
(A) Population:-
Growth of the human population is a major factor affecting the environment. Simply put,
overpopulation means that there are more people than there are resources to meet their needs.
Almost all the environmental problems we face today can be traced back to the increase in
population in the world. The human population is at 6 billion; with an annual global growth rate
of 1.8%, three more people are added to the earth every second.
(B) Habitat Removal and Alteration :-
Habitat fragmentation is the loss and subdivision of a habitat and the corresponding increase in
other habitats in the landscape. Conversion of habitat represents the greatest threat to
biodiversity, since almost all human activities cause alterations to the natural environment to a
greater or lesser degree. Almost 10% of Canada\'s ecoregions are estimated to be at high risk for
loss of biodiversity because of habitat removal.
(C) Overharvesting/Overexploitation :-
Overharvesting has had the greatest effect on biodiversity. In fact, overharvesting and habitat
loss often occur simultaneously, as removal of an organism from its environment can have
irreversible impacts on the environment itself.
Humans have historically exploited plant and animal species in order to maximize short-term
profit, at the expense of sustainability of the species or population. This exploitation follows a
predictable pattern: initially, a species harvested from the wild can turn a substantial profit,
encouraging more people to get involved in its extraction. This increased competition encourages
the development of more large-scale and efficient methods of extraction, which inevitably
deplete the resource.
(D) Pollution :-
Toxic discharges: This includes metals, organic chemicals, and suspended sediments usually
found in industrial and municipal effluents that are discharged directly into waterbodies. Toxic
discharges can inversely impact the biota (living organisms) in an ecosystem by killing them,
weakening them, or affecting their ability to carry out essential biological functions (feeding,
reproducing, etc.).
bacterial contamination: For example, fecal coliforms that come from human waste are found in
municipal effluent discharges. Potable water is treated to destroy fecal coliforms which can make
people ill if ingested.
nutrient buildup: Most concern are phosphorus and nitrogen which often originate as run-off
from fertilizers applied on agricultural fields. These nutrients, naturally present in very low
concentrations, stimulate rapid growth of algae and aquatic plants, ultimately limiting the amount
of oxygen and light available to other organisms in the ecosystem. As well, aquatic environments
can be degraded by habitat alteration and presence of invasive species.
Answer (7);
SPECIES DIVERSITY
This refers to the variety of species within a particular region. The number of species in a region
is a measure for such.
Biodiversity is the variety of life on earth.
Biodiversity provides -food, shelter, medicine and industrial raw materials.
Biodiversity maintains the health of the earth and its people.
Biodiversity is an ecological asset to human beings.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
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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.
Palestine last event orientationfvgnh .pptxRaedMohamed3
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2. INTRODUCTION
DEFINITION:
Biodiversity is often used to
describe all the species living in a
particular area. If we consider this
area at its largest scale - the entire
world - then biodiversity can be
summarized as "life on earth.“
Biological diversity (or biodiversity)
was coined by Edward O. Wilson,
amongst others, as an ecological
concept to include all the living
organisms of a given system, from
the monera to the trees, annelids to
mammals.
3. Levels of biodiversity
Three levels of
Biodiversity are:
1. Ecosystem
2. Species
3. Genes
• „Specie Level is the
most important level‟.
4. ORIGIN OF BIODIVERSITY:
Majorly when we talk about biodiversity, we talk about the
variety of species of animals, birds, plants etc present in
nature. Biodiversity found on earth today is the result of 4
billion years of evolution. The origin of life has not been
definitely established by science, though evidence suggests
that life may already have been well-established a few hundred
million years after the formation of the earth. Until
approximately 600 million years ago, all life consisted of
bacteria and similar single-celled organisms.
ORIGIN
5. Factors
Factors effecting biodiversity
Biodiversity is affect by physical factors which
may include the climatic change in a region, food
shortage for living things to survive or many
other reasons but somehow or the other they are
connected to all the man made factors. For
example the climatic change cannot be all of a
sudden but as a result of a change in the
atmosphere like burning (Forest fires etc).
Similarly food shortage can be a result of over
population when there is not enough for human
beings how will the let the other species on earth
to survive. Lets talk about some of the factors
affecting biodiversity..
6. 1) CLIMATIC CHANGE:
The global climate has changed repeatedly in the distant past.
Although these events are typically associated with a degree of
species loss, overall they often mark the beginning of a burst
of new species.
2) GLOBAL WARMING:
Global warming is altering the distribution and abundance of
plant and animal species. Application of a basic law of ecology
predicts that many will vanish if temperatures continue to rise.
3) POLLUTION:
Many human activities can, both directly and indirectly, result
in pollution of some sort. Waste plastic in the oceans is
mistaken for jellyfish by turtles and ingested, resulting in
starvation and death.
4) DEFORESTATION:
The loss of rainforests around the world, where many species
of life are found will mean that potential knowledge, whether
medicinal, sustenance sources, or evolutionary and scientific
information etc. could be lost.
7. 5 )FOOD PRODUCTION:
All the food in the world depends upon natural resources, and the variety
of food available depends upon natural diversity. Overexploitation leads
to more and more destructive collection procedures such as cyanide and
blast fishing. In regions of famine bush meat may be collected above a
sustainable level, and populations of wildlife may crash.
6) DWINDLING RESOURCES:
The hunger for more resources among human beings has led down
biodiversity highly. Ether it has to be sea animals, plants or land animals.
Dwindling resources is the greatest reason for extinction of living
species.
7) HUMAN CONFLICTS:
Whilst not the most obvious threat to biodiversity the natural casualties
during a conflict are often greater than the human ones. The recent
ground invasion of Afghanistan is believed to have, if not damaged then
seriously impacted upon, one of the only known wild population of Snow
leopards, one of the rarest animals in the world. Similarly, the American
conflict with Vietnam resulted in Napalm being applied to an extensive
area, entirely destroying vast Mangrove forests.
8. IMPORTANCE
IMPORTANCE OF BIODIVERISTY:
A diverse ecosystem is important. Biodiversity
actually boosts ecosystem productivity where
each species, no matter how small, all have an
important role to play. It is this combination
that enables the ecosystem to possess the
ability to prevent and recover from a variety of
disasters.
9. A healthy biodiversity offers many
natural services:
A healthy biodiversity provides a number of
natural services for everyone.
Ecosystem services
such as:
Protection of water resources
Soils formation and protection
Nutrient storage and recycling
Pollution breakdown and absorption
10. Food
Medicinal resources
and pharmaceutical
drugs
Wood products
Ornamental plants
Biological resources such
as:
11. Social benefits
such as:
Research, education
and monitoring
Recreation and
tourism
Cultural values
That is quite a lot
of services we get
for free!
12. BENEFITS OF BIODIVERSITY
BENEFITS OF BIODIVERSITY:
There are a multitude of benefits of biodiversity in the sense of
one diverse group aiding another such as:
1) Resistance to catastrophe
Monoculture the lack of biodiversity, was a contributing factor
to several agricultural disasters in history, including the Irish
potato famine, the European wine industry collapse in the late
1800s, and the US southern corn leaf blight epidemic of
1970.Higher biodiversity also controls the spread of certain
diseases as viruses will need adapt to infect different species.
2) Food and drink
Biodiversity provides food for humans. Although about 80
percent of our food supply comes from just 20 kinds of plants,
humans use at least 40,000 species of plants and animals a day.
Many people around the world depend on these species for
their food, shelter, and clothing. There is untapped potential
for increasing the range of food products suitable for human
consumption, provided that the high present extinction rate
can be stopped.
13. 3) Medicines
A significant proportion of drugs are derived, directly
or indirectly, from biological sources; in most cases
these medicines can not presently be synthesized in a
laboratory setting. About 40% of the pharmaceuticals
used in the US are manufactured using natural
compounds found in plants, animals, and
microorganisms. Moreover, only a small proportion of
the total diversity of plants has been thoroughly
investigated for potential sources of new drugs. Many
drugs are also derived from microorganisms.
4) Industrial materials
A wide range of industrial materials are derived
directly from biological resources. These include
building materials, fibers, dyes, resins, gums, adhesives,
rubber and oil. There is enormous potential for further
research into sustainable utilizing materials from a
wider diversity of organisms.
14. 5) Intellectual value
Through the field of bionics, considerable technological
advancement has occurred which would not have without a
rich biodiversity.
6) Other ecological services
Biodiversity provides many ecosystem services that are
often not readily visible. It plays a part in regulating the
chemistry of our atmosphere and water supply.
Biodiversity is directly involved in recycling nutrients and
providing fertile soils. Experiments with controlled
environments have shown that humans cannot easily build
ecosystems to support human needs; for example insect
pollination cannot be mimicked by human-made
construction, and that activity alone represents tens of
billions of dollars in ecosystem services per annum to
humankind
15. Species Depend On Each
Other
While there might be “survival of the fittest”
within a given species, each species depends on
the services provided by other species to ensure
survival. It is a type of cooperation based on
mutual survival and is often what a “balanced
ecosystem” refers to.
As an example, consider all the species of
animals and organisms involved in a simple
field used in agriculture.
16. Crop byproducts feed cattle
Cattle waste feeds the soil that nourish the crops
Crops, as well as yielding grain also yield straw
Straw provides organic matter and fodder
Crops are therefore food sources for humans and animals
Soil organisms also benefit from crops
Bacteria feed on the cellulose fibers of straw that farmers return to
the soil
Amoebas feed on bacteria making lignite fibers available for
uptake by plants
Algae provide organic matter and serve as natural nitrogen fixers
Rodents that bore under the fields aerate the soil and improve its
water-holding capacity
Spiders, centipedes and insects grind organic matter from the
surface soil and leave behind enriched droppings.
Earthworms contribute to soil fertility
Industrial-farming techniques would deprive these diverse species
of food sources and instead assault them with chemicals,
destroying the rich biodiversity in the soil and with it the basis for
the renewal of the soil fertility
17. More important than human use
or biological interest
Many people may support environmental causes to help
preserve the “beauty” of Nature. However, that is in a
strange way, not really a justifiable excuse as it is a
subjective, human or anthropomorphized view. Instead,
a logically sound reason based on ecological factors
would help show that biodiversity is more important
than people realize.
Loss of biodiversity and extinctions:
With the loss of biodiversity Earth will be unable to
keep up in the struggle to regenerate. The world
environmental situation is likely to be further
aggravated by the increasingly rapid, large scale global
extinction of species. It occurred in the 20th century at
a rate that was a thousand times higher than the
average rate during the preceding 65 million years.
This is likely to destabilize various ecosystems
including agricultural systems.
18. Species in Danger
Talking about some of the important species
that are in danger:
1) The incredible neem
contains natural pesticides.
Its leaves repel 200 insects.
It is used in medicine.
It helps to control population.
Can grow fastest even in poor soil.
19. 2) The Passenger pigeon:
Now extinct as a result of
commercial hunting.
Habitat destruction.
1914 last bird died in Cincinnati.
Other causes of its dying could be
the change in weather.
3) The Tasmanian tiger:
Extremely rare in wild.
Loved moving around farms and
cottages.
Last was short dead in 1999 by a
farmer.
Thought to be very dangerous.