Biodiversity Lesson 2

Biodiversity Lesson 2

Human Impact on Biodiversity

Biodiversity is Important Because....

• Increases food choices

• Increases amount of food choices

• Entire food web is better able to adapt to changes

• 3 Types of Biodiversity: Genetic (within a species), Ecosystem (different types of environments), & Species (types of species)

• The goal is a balance!

Multiple Choice

What has happened to biodiversity in the last 50 years?

• It has increased significantly

• It has remained stable

• It has decreased dramatically

• It has fluctuated

Multiple Choice

Which of the following is a threat to biodiversity?

• Habitat destruction
• Planting more trees
• Conservation efforts
• Pollination by bees

Multiple Choice

Which of the following is a consequence of losing biodiversity?

• Ecosystems may become less stable
• More available resources
• Increased species interactions
• Higher food production

Match

Match the following

Species Diversity

Genetic Diversity

Ecosystem/Ecological Diversity

Chocolate Diversity

• Species Diversity

• Genetic Diversity

• Ecosystem/Ecological Diversity

• Chocolate Diversity

Biodiversity Safe Levels are Green & Blue

Levels Below are Considered @ Risk!

Habitat Loss

• Causes: Urbanization (city growth), Agriculture, Manufacturing (need for natural resources), Forestry

• We do need basic needs, but there needs to be a balance

• Habitat loss is currently the primary cause of species extinction worldwide

Habitat Fragmentation

• Splitting up of a habitat

• Cause examples: logging, dams, roads, parking lots, developments etc.

Multiple Choice

The area where a plant or animal lives (science term)

• environment

• location

• habitat

• home

Multiple Select

Habitat loss means less space for animals to __________, __________, and _____________. (Choose 3 answers)

• feed

• breed

• eat chocolate

• raise their young

Multiple Choice

What will help prevent habitat destruction?

• Spreading out farms and urban developments

• Finding a balance between what humans and other species needs

• Decreasing animal populations

• Decreasing plant populations

Multiple Choice

Most mammals are threatened for extinction by _____.

• habitat loss

• climate change

• poaching

• disease

Multiple Choice

Which of the following is NOT a way in which humans are destroying habitats?

Key word: NOT

• Clearing out jungles to grow a single crop.

• Gathering rain water to use to water crops.

• Building a shopping mall with a large parking lot.

• Cutting trees for toilet paper.

Poll

Would you rather

• lick the bottom of your shoe

• eat your boogers

Overexploitation

• Overexploitation: harvesting species from the wild at rates faster than natural populations can recover

• Examples: overfishing & hunting

Multiple Choice

The practice of harvesting or hunting to such a degree that remaining individuals may not be able to replenish the population is called _____.

• biomagnification

• overexploitation

• edge effects

• natural resource

• My teacher left alone with Reese's Peanut Butter Cups

Multiple Choice

Which type of jolly rancher is a victim of overexploitation?

• Grape

• Green Apple

• Blue Raspberry

• Cherry

Invasive Species

• Invasive Species: Non-native species that disrupt an ecosystem & can cause loss of biodiversity

• Native Species: a species that normally lives and thrives in a particular ecosystem

Multiple Choice

What makes a species invasive?

Watch the video if you were absent for the notes.

• Moving to a new ecosystem and taking resources from natives

• A native species population size increasing too quickly

• Species that can't adapt

• Plants that take up too much space

Multiple Choice

Invasive species alter the ecosystem by ______ in number quickly. This leads to ______ food for the native species.

• increasing, less

• increasing, more

• decreasing, less

• decreasing, more

Multiple Select

Invasive plants compete with native plants for --- [choose 3]

• sunlight

• water

• oxygen

• space

Multiple Choice

How did the zebra mussels end up in the Great Lakes?

• In ballast tanks of ships

• They were intentionally released

• They have always been in the Great Lakes

• Zebras aren't found in the Great Lakes - what you talking about teacher?!!

Multiple Choice

Kudzu has overgrown many parts of southern Missouri and native ground plants have disappeared from the area. This is an example of:

• Parasitism between kudzu and the native plants

• Commensalism occurring between the kudzu and native plants

• Competition occurring between the native and invasive species

Pollution

• Air, Water, Soil & Noise Pollution from humans affect other species

• This one is pretty obvious - which is why I focused more in on soils as not sure how aware you are of this issue.

Climate Change

• Affects the sea level - land available

• Changes weather patterns - more extremes - affects soils

• Climate change affects the abiotic factors which affects species survival

• 1920's - Industrial Revolution (manufacturing) led to huge spike in CO₂ -

• Note: Earth's climate has shifted throughout the history due to volcanism & earth/sun but.......

Multiple Choice

Pollution _________________________.

• is harmful materials put into the environment
• found in air, water, and land
• affects plants, animals, and people

• All of the above

Match

Match the types of pollution.

• The destruction of the earth's surface caused by the misuse of resources and improper dumping of waste.

• When heated water from things like power plants or factories is released into rivers, lakes, or the ocean, making the water too hot for fish and other aquatic animals to live comfortably.

• When the ground gets dirty with harmful things like trash, chemicals, and heavy metals

• Any loud sounds that are either harmful or annoying

  to humans and animals

• Occurs when harmful substances, such as trash, chemicals, or bacteria, enter a body of water

Land Pollution

Thermal Pollution

Soil Pollution

Noise Pollution

Water Pollution

• Land Pollution

• Thermal Pollution

• Soil Pollution

• Noise Pollution

• Water Pollution

Poll

Mark those that you are comfortable with.

• List the ways humans negatively affect biodiversity

• Give examples or ID ways that humans negatively affect biodiversity

• In a scenario be able to explain how biodiversity is being affected

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