Human Impact on the Biosphere. Those Pesky Humans! Humans have a large impact on the environment and the organisms we share it with. This is due to our.

Slides:



Advertisements
Similar presentations
Charting a Course for the Future Biology pgs
Advertisements

OBJECTIVE 14 Trace biogeochemical cycles through the environment, including water, carbon, oxygen, and nitrogen Relating natural disasters, climate changes,
Human Impact Chapter 6 Vocab ONLY
Slide 1 of 30 Copyright Pearson Prentice Hall 6-4 Charting a Course for the Future.
End Show Slide 1 of 30 Copyright Pearson Prentice Hall Biology.
Chapter 6 – Humans in the Biosphere
Humans in the Biosphere
Human Impact on the Biosphere
Interconnected Planet
CHAPTER 6 HUMANS IN THE BIOSPHERE
HUMAN IMPACT JEOPARDY #1 Image from:
How do we influence the environment?
HUMANS IN THE BIOSPHERE. A Changing Landscape  Growing populations depend on the limited natural resources of earth for survival.  Humans rely on ecological.
Your group letter is on your desk! 2-3 per group Take an index card with writing and a blank index card You have 10 minutes to 1. copy the card onto a.
Vocabulary 6-2 Renewable resources --- Resources that are naturally replaced. Ex. sunlight, wind, and trees. Non-renewable resources --- Resources that.
Global Change and the Human Impact. Environmental services and goods Q: What are some services you get from the environment? Renewable They can be used.
Unit 4 Human Impact on the Environment. Population Three factors that affect population: –Number of births –Number of deaths –Number of individuals that.
Chapter 56: Conservation Biology and Global Change
Human Impact on the Environment
What is Human Impact?.
AP Biology Ecosystems Ecology Part 3. Important concepts from previous units: C3 plants perform the light reaction and Calvin cycle in the same cell.
HUMAN IMPACT on the BIOSPHERE A Changing Landscape.
Chapter 6 Humans in the Biosphere
Human Impact on the environment. 2 RESOURCES  RESOURCE- something used to take care of a need  TYPES: 1. Non Renewable- can’t be replenished; available.
1 Human Impact How do humans impact their environment?
Chapter 6.2 – Renewable and Nonrenewable Resources
Humans in the Biosphere. A Changing Landscape * Human activities change the flow of energy in an ecosystem and can reduce the ability of ecosystems to.
Need for awareness and understanding Human activities can create ecological problems that must be avoided or corrected. People need to understand the.
Human Impacts Ecology Unit Learning Goal /10/05/vo.hungary.toxic.mud.spill.mtv?ir ef=allsearchhttp://
Warm-Up / EOC Prep Complete each situation: 1. As prey pop. increases, predator pop. ____ 2. As prey pop. decreases, predator pop. ____ 3. As predator.
HUMAN IMPACT on the BIOSPHERE Chapter 6-3 BIODIVERSITY
9/24/13 Objective: How are humans impacting the environment? Do Now: What is this picture depicting?
Lesson Overview Lesson Overview A Changing Landscape Chapter 6 Humans in the Biosphere.
HUMAN IMPACT on the BIOSPHERE Chapter 6-3 BIODIVERSITY
Global Warming, Pollution and Invasive Species… oh my! Don’t write anything in this color!!
Environmental Issues Human Impact on the Environment.
Humans in the Biosphere Chapter 6 Mrs. Yanac. Limited Resources All organisms on Earth must share the planet’s resources and they are LIMITED. Humans.
How are Humans Affecting the Environment?
Warm-Up #17 4/25/12 1)What are resources? Given an example. 2) What are three resources humans have affected negatively? 3)What types of information can.
Environmental Issues Causes and Effects. Greenhouse Effect  Cause:  Water vapor, Carbon Dioxide (CO2), methane, and other gases trap heat that radiates.
Human Activities and the Earth’s Valuable Water and Air Resources
Chapter 5 Biological Diversity and Conservation Section 1 Vanishing Species.
Human Impact on the Biosphere. Those Pesky Humans! Humans have a large impact on the environment and the organisms we share it with. This is due to our.
Global Issues Biology CH 6.
Human Impact on Ecosystems Ecology – Part II. Renewable Resources Can be replaced with time ex. Food supply, water, soil, solar energy, air, soil.
A. Rapid Human Population Growth is the root of most of our environmental problems. Industrial Revolution Medical Advancements Farming Advancements.
Humans in the Biosphere Ms. Schultz. The root cause of many environmental issues is the size of the human population Currently, there are over 7 billion.
Humans in the Biosphere. Changing the landscape  Humans depend on and participate in food webs and chemical cycles.  Activities that affect the biosphere.
Human Impact on the Biosphere:. Natural Resources  Renewable Resource: nature can replace it in the near future.  Sustainable Yield: the replacement.
Humans in the Biosphere Chapter 6. Humans in the Biosphere All organisms share a limited resource base We all rely on natural ecological processes that.
Human Impact on the Biosphere. Why do humans impact the environment? Humans have a large impact on the environment and the organisms we share it with.
Chapter 6 Humans in the Biosphere. Chapter 6 Section 1 A Changing Landscape.
Humans in the Biosphere
Chapter 6 Humans in the Biosphere
Humans in the Biosphere
Biological Diversity & Conservation
Cities also produce more pollution.
Human Impact on the Biosphere Packet Page 28 * Turn in HW article*
BIODIVERSITY the variety of life on Earth!
Human Impact on the Environment
HUMAN IMPACT on the BIOSPHERE Part 3 BIODIVERSITY
HUMAN IMPACT on the BIOSPHERE Chapter 6-3 BIODIVERSITY
HUMAN IMPACTS on ECOSYSTEMS
Ch. 56 Warm-Up How does acid precipitation affect the environment?
Humans in the Biosphere
Human Impact on the Biosphere
Human Impact on the Environment
HUMANS IN THE BIOSPHERE
Copyright Pearson Prentice Hall
ECOSYSTEM Collection of abiotic (nonlivng) and biotic (living) factors in an area Together they influence growth, survival, and productivity of an organism.
Presentation transcript:

Human Impact on the Biosphere

Those Pesky Humans! Humans have a large impact on the environment and the organisms we share it with. This is due to our – Ever increasing population size. – Ever increasing use of both renewable and non-renewable resources.

Humans Affect the Biosphere in 4 Essential Ways: A. Global Climate Change and Acid Rain B. The Ozone Layer C. Biological Magnification/Bioaccumulation D. Threatening Biodiversity

GLOBAL CLIMATE CHANGE AND ACID RAIN A.

Human Activity and the Carbon Cycle We are releasing CO 2 and other related forms of carbon into the atmosphere at a much faster rate than they are absorbed. This is due to the ever increasing rate at which we: – Clear-cut and burn forests for housing and farming – Burn fossil fuels These activities have resulted in the phenomenon of global warming.

Global temperatures have increased °F since the late 19th century. FACTS WE KNOW

The snow cover in the Northern Hemisphere and floating ice in the Arctic Ocean have decreased. FACTS WE KNOW Graph & glacier pix: polar bears:

What’s so bad about warming up a little? Coastal flooding Cartoon from Brookings Register

What’s so bad about warming up a little? More severe storms

What’s so bad about warming up a little? Changes in Gulf Stream

What’s so bad about warming up a little? Weather extremes Brookings Register Heat waves and drought

What’s so bad about warming up a little? Changing habitats means loss of species

Acid Rain The burning of fossil fuels also releases nitrogen and sulfur compounds. These compounds combine with water vapor in the air to produce acids. The acids then migrate for miles and fall as acid rain.

Effects of Acid Rain

THE OZONE LAYER B.

OZONE LAYER The ozone layer protects us from UV light. UV light causes cancer, eye damage, and can damage plant tissue

WHAT WE KNOW Scientists have been monitoring the ____________ of ozone in our atmosphere and have discovered a hole in the ozone layer over ____________. depletion Antarctica

What’s the cause of Ozone Depletion? Chlorofluorocarbon molecules _______ released from air conditioners, aerosol spray cans, fire extinguishers, and industry ________________ destroy ozone (CFC’s)

_____________spray cans no longer contain CFC propellants. Gases in ___________________ and _____________ are collected and recycled. THAT’S WHY... AEROSOL AIR CONDITIONERS refrigerators

Pop Quiz Have out a sheet of Paper and number it 1-4. Read each question and write down only the letter of your choice. Good Luck

Pop Quiz 1.Which of the following is an example of ecological succession? A. spring followed by summer B. tadpole becoming a frog C. meadow replacing a field D. predators eating prey 2.What is the main suspected environmental problem associated with the burning of fossil fuels? A. depletion of fresh water B. depletion of ozone C. global cooling D. global warming

Pop Quiz 3. Which of the following is a side effect of acid rain. A.Large animals B.Cancer C.Damage to trees D.Rusty cars The ozone layer protects Earth by absorbing – A. cosmic dust B. solar heat C. ultraviolet radiation D. white-light frequencies

BIOACCUMULATION C.

Biological Magnification/ Bioaccumulation Biological magnification/ Bioaccumulation occurs when pesticides build up in animal tissue as you move up a food chain.

Example: _____ was first modern insecticide It was cheap, stayed active for long time, and kills many different insects Used to control agriculture pests and disease carrying _______________ DDT MOSQUITOES

DDT in Borneo DDT was used in Borneo to kill mosquitoes. Lizards ate the mosquitoes. Cats ate the lizards. Cats began dying. With no cats, the rat population grew. Rats began spreading disease. They came up with an interesting solution…..

Parachuting Cats

DDT in the United States DDT causes birds to lay eggs with ___________ shells so eggs would break when sat on. American Bald Eagle was declared endangered in It has since been reclassified as _____________________ fragile “threatened”

THREATENING BIODIVERSITY D.

The sum of the genetically based variety of all the organisms in the biosphere = ___________________ Biodiversity gives __________ to the ecosystems that we are so dependent on, enhances their ____________, and provides an important source of new _____, ________, and other _________. BIODIVERSITY stability productivity food medicine products

Threatening Biodiversity There are 3 basic ways that human actions threaten biodiversity: Introducing non-native species Hunting organisms to extinction Habitat destruction

BIODIVERSITY THREAT One of most important threats to biodiversity come from apparently harmless plants or animals that humans transport into new habitats = _____________________ New habitats don’t have ____________ and parasites that control the population in their native habitats, so invasive species populations _____________ rapidly. INVASIVE SPECIES PREDATORS INCREASE

EXAMPLES OF INVASIVE SPECIES 24 rabbits turned loose for hunting in 1859 in Australia, reproduced at such a rapid rate they have taken over the continent. It is still a major problem and rabbit diseases have been purposely introduced to try to control the population

Hunting Organisms to Extinction

Habitat Destruction Development of natural areas for cities or agriculture

BIODIVERSITY THREAT Tropical rainforests are disappearing at a rate of about 80 acres per minute.

BIODIVERSITY THREAT The tropical rainforests once covered more than 14% of the earth's total land surface, but now cover less than 6%. Changes in Brazilian rainforest over 30 years

Can lead to species Extinction

Endangered Species

Worlds Rarest Animal

ONCE THOUGHT EXTINCT

WHAT CAN WE DO??? So…

WHAT DOES IT MEAN? REMEMBER! Everything is connected. BIODIVERSITY is a measure of the health of an ecosystem. Image from: Pearson Education Inc, publishing as Pearson Prentice Hall ©2006

Examples of efforts to keep a species from becoming extinct: ___________________ (raised and protected in zoos until population is stable, then returned to wild CONSERVING BIODIVERSITY Captive breeding

End

This lesson connects to: Ecological Succession – Primary vs secondary Population Ecology Notes – Graphs, growth rate, factors that effect population size Human and the Environment – DDT, Acid Rain, Ozone layer, biodiversity, global warming

Key Vocabulary: - ozone layer- global warming - biodiversity- ecosystem diversity - species diversity- genetic diversity - extinction- endangered species - invasive species- conservation - renewable resource- soil erosion - nonrenewable resource- sustainable use - desertification- deforestation - aquaculture- smog - pollutant- acid rain - poachers