Biodiversity and Types of Species - 1.27-31.25

Monday - January 27

_______ succession needs pioneer species like lichens/mosses to create soil. ________ succession does not need lichens/mosses since the soil is already present. 

👍 succession / primary

👎 soil / mosses

✔ primary / secondary

❌ secondary / primary

Alpha Box Warm Up

Keystone Species

Have you ever heard of a keystone? 

In architecture it’s the wedge shaped stone at the top of an arch that holds it all together. Without it the arch would collapse. 

In ecology its an ______________that helps define an entire ecosystem. It holds the ecosystem together because without the ecosystem would _____________________________________

Greatly impact other community members and the health of the ____________

What were the negative effects of removing the sharks?

Ecosystems depend on keystone species. If we lose keystone species the biodiversity of the ecosystem as a whole will

👍 rise

👎 fall

❌ not change

Native Species

• Naturally found in a specific ecosystem

• Example: Koalas in Australia

• May be called indigenous species

• Humans did not bring in or influence the species distribution

Invasive Species

• Nonnative organisms that cause harm to the environment, the economy, or to human health

• Can be introduced through human activities

• Have no natural predators and often take over the ecosystem (they invade)

https://www.youtube.com/watch?v=rPeg1tbBt0A   

How did carp get into the river?

Why are they considered invasive?

What natural predators do carp have here?

What are people doing about the species?

Tuesday - January 28

Which of the following is NOT true about Invasive Species?

👍 They typically have a large impact on the environment

👎 They are native to the area.

✔ They will often have faster reproduction rates

❌ They commonly lack a predator  capable of limiting their 

       survival  

___________    _____________

• An organism whose presence, absence or abundance reflects a specific environmental condition

• A good indicator species should also respond to changes relatively quickly and be easy to observe.

• Canaries have a very responsive metabolism, and when exposed to dangerous gases in coal mines, they react quickly and obviously. 

• Miners would notice right away that something was wrong, because canaries are known for their chirping and singing. 

• Species must be sensitive to foreign disturbances more than others and must be strong enough to survive it.

• Why do scientists track and study indicator species?

Endemic Species

• Endemic species are found in only______________________

• For example, the blue jay is endemic to __________  ____________ (broad territory)

• The Barton Springs salamander is endemic to the mouth of one spring in Austin, Texas. (small territory)

• Endemic species with highly restricted locations, like the Barton Springs salamander, are particularly vulnerable to extinction. WHY?

https://www.youtube.com/watch?time_continue=1&v=A1FWQvaBoRg&feature=emb_logo 

A species that is only found in one specific area is called

👍 Endangered

👎 Indicator

✔ Keystone

 ❌ Endemic

What do you already know about the word endangered?

What do you already know about extinction?

____________species- any species which is vulnerable to become endangered in the near future. (more than a few left on Earth, but not many)

____________species: Any species that is at imminent risk  of extinction because of a sudden rapid decrease in its population or a loss of its critical habitat and genetic variation(a few left on Earth) 

___________Species: Any species of animal or plant which no more individuals are alive  in the world.

Can a species be endangered and endemic?

Can a species be endemic and native?

Wednesday - January 29 - ELD - no class

Thursday - January 30

Thursday - September 5

Which of the following is true about Endangered Species?

 👍 They are always endemic species.

👎 They are always keystone species.

 ✔ They are always indicator species.

❌ They are generally vulnerable before they are threatened

What is the difference in endangered and extinct?

What makes endemics more vulnerable to becoming endangered/extinct?

Why is it especially important we protect keystone species from becoming endangered?

Why is it especially important we protect indicator species from becoming endangered?